Academic literature on the topic 'Gossypium species'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Gossypium species.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Gossypium species"
1
Anwar, Muhammad, Muhammad Zafar Iqbal, Aamir Ali Abro, Shabana Memon, Liaquat Ali Bhutto, Shamim Ara Memon, and Yan Peng. "Inter-Specific Hybridization in Cotton (Gossypium hirsutum) for Crop Improvement." Agronomy 12, no. 12 (December 13, 2022): 3158. http://dx.doi.org/10.3390/agronomy12123158.
Full textAbstract:
Interspecific hybridization has contributed significantly to land diversity, species evolution, and crops’ domestication, including upland cotton, the cultivated form of Gossypium hirsutum. Being the world’s most important fiber crop species, Gossypium hirsutum belongs to the allotetraploid Gossypium consisting of six additional tetraploid species. The lint fiber evolved once in diploid parent A-genome species in the Gossypium’s history and passed on during hybridization of the A-genome with the D-genome and was maintained in subsequent evolution. The domestication history of G. hirsutum involved the collection and use of lint fibers by indigenous people for the purpose of making strings and other textile products; hence, spinnable lint fibers were likely to have evolved under domestication. Crossing with G. barbadense has resulted in the development of multiple genetic lines in contemporary upland cotton. However, in later-generation hybrids between G. hirsutum and other polyploid species, reproductive barriers such as reduced fertility, segregation distortion, and hybrid breakdown are frequently observed, complicating the task of introgressing new, stably inherited allelic variation from inter-specific hybridization. Recent efforts in molecular genetics research have provided insights into the location and effects of QTLs from wild species that are associated with traits important to cotton production. These and future research efforts will undoubtedly provide the tools that can be utilized by plant breeders to access novel genes from wild and domesticated allotetraploid Gossypium for upland cotton improvement.
2
Feng, Chunda, Mauricio Ulloa, Claudia Perez-M., and James McD Stewart. "Distribution and molecular diversity of arborescent Gossypium species." Botany 89, no. 9 (September 2011): 615–24. http://dx.doi.org/10.1139/b11-042.
Full textAbstract:
Mexico is a center of diversity of Gossypium . As currently circumscribed, arborescent Gossypium species (subsection Erioxylum ) are widely distributed in dry deciduous forests located from Sinaloa in the north of its range to Oaxaca in the south of its range. However, extensive morphological variation exists among accessions from these different geographic regions. The objective of this work was to determine whether the observed morphological variation is reflected at the molecular level. Molecular diversity and phylogenetic relationships were estimated with 210 randomly amplified polymorphic DNA fragments and 766 amplified fragment length polymorphism fragments among 33 accessions of arborescent Gossypium, including 23 of Gossypium aridum , the most widely distributed of the arborescent Mexican diploid Gossypium species. Over 90% of the fragments were polymorphic; however, each accession contained only between 32% and 46% of the total loci. Two thirds of the loci among the G. aridum accessions had allelic frequencies lower than 80%. The genetic distance between Gossypium gossypioides (subsection Selera ) and species of subsection Erioxylum ranged between 0.64 and 0.84. The genetic distance between two recognized species, Gossypium lobatum and Gossypium schwendimanii , within subsection Erioxylum was 0.32. Most molecular data support the traditional classification of Gossypium species and the geographical ecotypes of the G. aridum accessions. A newly collected accession, US-72, of subsection Erioxylum was genetically distant (range, 0.42–0.54) from the other species of the subsection. Molecular data support the recognition of this taxon as a new species. The molecular diversity among accessions of G. aridum was greater than that among the species of subsection Erioxylum. The results indicate this subsection deserves additional study to establish a defensible taxonomic treatment of the various taxa and to resolve genetically distant geographical ecotypes.
3
Sun, Ruibin, Shaohui Wang, Dan Ma, and Chuanliang Liu. "Genome-Wide Analysis of LRR-RLK Gene Family in Four Gossypium Species and Expression Analysis during Cotton Development and Stress Responses." Genes 9, no. 12 (November 29, 2018): 592. http://dx.doi.org/10.3390/genes9120592.
Full textAbstract:
Leucine-rich repeat receptor-like kinases (LRR-RLKs) have been reported to play important roles in plant growth, development, and stress responses. However, no comprehensive analysis of this family has been performed in cotton (Gossypium spp.), which is an important economic crop that suffers various stresses in growth and development. Here we conducted a comprehensive analysis of LRR-RLK family in four Gossypium species (Gossypium arboreum, Gossypium barbadense, Gossypium hirsutum, and Gossypium raimondii). A total of 1641 LRR-RLK genes were identified in the four Gossypium species involved in our study. The maximum-likelihood phylogenetic tree revealed that all the LRR-RLK genes were divided into 21 subgroups. Exon-intron organization structure of LRR-RLK genes kept relatively conserved within subfamilies and between Arabidopsis and Gossypium genomes. Notably, subfamilies XI and XII were found dramatically expanded in Gossypium species. Tandem duplication acted as an important mechanism in expansion of the Gossypium LRR-RLK gene family. Functional analysis suggested that Gossypium LRR-RLK genes were enriched for plant hormone signaling and plant-pathogen interaction pathways. Promoter analysis revealed that Gossypium LRR-RLK genes were extensively regulated by transcription factors (TFs), phytohormonal, and various environmental stimuli. Expression profiling showed that Gossypium LRR-RLK genes were widely involved in stress defense and diverse developmental processes including cotton fiber development and provides insight into potential functional divergence within and among subfamilies. Our study provided valuable information for further functional study of Gossypium LRR-RLK genes.
4
Kämpfer, Peter, Karin Martin, John A. McInroy, and Stefanie P. Glaeser. "Novosphingobium gossypii sp. nov., isolated from Gossypium hirsutum." International Journal of Systematic and Evolutionary Microbiology 65, Pt_9 (September 1, 2015): 2831–37. http://dx.doi.org/10.1099/ijs.0.000339.
Full textAbstract:
A Gram-stain-negative, rod-shaped, non-spore-forming bacterium (strain JM-1396T) producing a yellow pigment, was isolated from the healthy internal stem tissue of post-harvest cotton (Gossypium hirsutum, cultivar ‘DES-119’) grown at the Plant Breeding Unit at the E. V. Smith Research Center in Tallassee (Macon county), AL, USA. 16S rRNA gene sequence analysis of strain JM-1396T showed high sequence similarity values to the type strains of Novosphingobium mathurense, Novosphingobium panipatense (both 98.6 %) and Novosphingobium barchaimii (98.5 %); sequence similarities to all other type strains of species of the genus Novosphingobium were below 98.3 %. DNA–DNA pairing experiments of the DNA of strain JM-1396T and N. mathurense SM117T, N. panipatense SM16T and N. barchaimii DSM 25411T showed low relatedness values of 8 % (reciprocal 7 %), 24 % (reciprocal 26 %) and 19 % (reciprocal 25 %), respectively. Ubiquinone Q-10 was detected as the dominant quinone; the fatty acids C18 : 1ω7c (71.0 %) and the typical 2-hydroxy fatty acid, C14 : 0 2-OH (11.7 %), were detected as typical components. The polar lipid profile contained the diagnostic lipids diphosphatidylglycerol, phosphatidylethanolamine, sphingoglycolipid and phosphatidylcholine. The polyamine pattern contained the major compound spermidine and only minor amounts of other polyamines. All these data revealed that strain JM-1396T represents a novel species of the genus Novosphingobium. For this reason we propose the name Novosphingobium gossypii sp. nov. with the type strain JM-1396T ( = LMG 28605T = CCM 8569T = CIP 110884T).
5
Pereira, G. S., R. L. Sousa, R. L. Araújo, L. V. Hoffmann, E. F. Silva, and P. A. V. Barroso. "Selective fertilization in interspecific crosses of allotetraploid species of Gossypium." Botany 90, no. 3 (March 2012): 159–66. http://dx.doi.org/10.1139/b11-094.
Full textAbstract:
The genus Gossypium is composed of both diploid and allotetraploid species. The five allotetraploid species of Gossypium are sexually compatible, and only partial sexual barriers have been described. Natural hybrids among them do not occur or occur in situ with very low frequency in Brazil in the rare places where cultivated upland cotton ( Gossypium hirsutum L.) occurs in a sympatric range with Gossypium barbadense L. or Gossypium mustelinum Miers. We evaluated the presence of pollen competition as a prezygotic barrier in crosses between upland cotton and G. barbadense and G. mustelinum. We found that G. barbadense pollinated with a mixture of 50% upland cotton and 50% G. barbadense pollen resulted in 17.4%–31.1% interspecific hybrids, depending upon the upland cotton genotype used as pollen donor. Mixtures containing pollen from G. mustelinum and upland cotton, used to pollinate G. mustelinum in proportions of 25%:75%, 50%:50%, and 75%:25%, produced 61.3%, 22.5%, and 3.6% interspecific hybrids, respectively. These low rates of hybrid production demonstrate that pollen competition is present with G. mustelinum and G. barbadense and confirms this mechanism as a sexual barrier.
6
Kämpfer, Peter, Hans-Jürgen Busse, John A. McInroy, and Stefanie P. Glaeser. "Variovorax gossypii sp. nov., isolated from Gossypium hirsutum." International Journal of Systematic and Evolutionary Microbiology 65, Pt_12 (December 1, 2015): 4335–40. http://dx.doi.org/10.1099/ijsem.0.000581.
Full textAbstract:
A beige-pigmented bacterial strain (JM-310T), isolated from the healthy internal root tissue of 4-week-old cotton (Gossypium hirsutum, cultivar ‘DES-119’) in Tallassee (Macon county), Alabama, USA, was studied taxonomically. The isolate produced small rod-shaped cells, which showed a Gram-negative staining behaviour. A comparison of the 16S rRNA gene sequence of the isolate revealed 99.2, 98.8, 98.7, 98.7, 98.1 and 97.6 % similarity to the 16S rRNA gene sequences of the type strains of Variovorax paradoxus, Variovorax boronicumulans, Variovorax ginsengisoli, Variovorax soli, Variovorax defluvii and Variovorax dokdonensis, respectively. In phylogenetic trees based on 16S rRNA gene sequences, strain JM-301T was placed within the monophyletic cluster of Variovorax species. The fatty acid profile of strain JM-310T consisted mainly of the major fatty acids C16 : 0, C10 : 0 3-OH and summed feature 4 (iso-C15 : 0 2-OH/C16 : 1ω7c/t). The quinone system of strain JM-310T contained predominantly ubiquinone Q-8 and lesser amounts of Q-7 and Q-9. The major polyamine was putrescine and the diagnostic polyamine 2-hydroxyputrescine was detected as well. The polar lipid profile consisted of the major lipids phosphatidylethanolamine, phosphatidylglycerol, diphospatidylglycerol and several unidentified lipids. DNA–DNA hybridization experiments with V. paradoxus LMG 1797T, V. boronicumulans 1.22T, V. soli KACC 11579T and V. ginsengisoli 3165T gave levels of relatedness of < 70 %. These DNA–DNA hybridization results in addition to differential biochemical properties indicate clearly that strain JM-310T is a member of a novel species, for which the name Variovorax gossypii sp. nov. is proposed. The type strain is JM-310T ( = LMG 28869T = CIP 110912T = CCM 8614T).
7
Jan, Masood, Zhixin Liu, Chenxi Guo, Yaping Zhou, and Xuwu Sun. "An Overview of Cotton Gland Development and Its Transcriptional Regulation." International Journal of Molecular Sciences 23, no. 9 (April 28, 2022): 4892. http://dx.doi.org/10.3390/ijms23094892.
Full textAbstract:
Cotton refers to species in the genus Gossypium that bear spinnable seed coat fibers. A total of 50 species in the genus Gossypium have been described to date. Of these, only four species, viz. Gossypium, hirsutum, G. barbadense, G. arboretum, and G. herbaceum are cultivated; the rest are wild. The black dot-like structures on the surfaces of cotton organs or tissues, such as the leaves, stem, calyx, bracts, and boll surface, are called gossypol glands or pigment glands, which store terpenoid aldehydes, including gossypol. The cotton (Gossypium hirsutum) pigment gland is a distinctive structure that stores gossypol and its derivatives. It provides an ideal system for studying cell differentiation and organogenesis. However, only a few genes involved in the process of gland formation have been identified to date, and the molecular mechanisms underlying gland initiation remain unclear. The terpenoid aldehydes in the lysigenous glands of Gossypium species are important secondary phytoalexins (with gossypol being the most important) and one of the main defenses of plants against pests and diseases. Here, we review recent research on the development of gossypol glands in Gossypium species, the regulation of the terpenoid aldehyde biosynthesis pathway, discoveries from genetic engineering studies, and future research directions.
8
Udall, Joshua A., Evan Long, Chris Hanson, Daojun Yuan, Thiruvarangan Ramaraj, Justin L. Conover, Lei Gong, et al. "De Novo Genome Sequence Assemblies of Gossypium raimondii and Gossypium turneri." G3: Genes|Genomes|Genetics 9, no. 10 (August 28, 2019): 3079–85. http://dx.doi.org/10.1534/g3.119.400392.
Full textAbstract:
Cotton is an agriculturally important crop. Because of its importance, a genome sequence of a diploid cotton species (Gossypium raimondii, D-genome) was first assembled using Sanger sequencing data in 2012. Improvements to DNA sequencing technology have improved accuracy and correctness of assembled genome sequences. Here we report a new de novo genome assembly of G. raimondii and its close relative G. turneri. The two genomes were assembled to a chromosome level using PacBio long-read technology, HiC, and Bionano optical mapping. This report corrects some minor assembly errors found in the Sanger assembly of G. raimondii. We also compare the genome sequences of these two species for gene composition, repetitive element composition, and collinearity. Most of the identified structural rearrangements between these two species are due to intra-chromosomal inversions. More inversions were found in the G. turneri genome sequence than the G. raimondii genome sequence. These findings and updates to the D-genome sequence will improve accuracy and translation of genomics to cotton breeding and genetics.
9
Fan, Liu, Zhang, Zou, Jiang, Huang, Fan, et al. "Genome-Wide Identification and Expression Analysis of the Metacaspase Gene Family in Gossypium Species." Genes 10, no. 7 (July 12, 2019): 527. http://dx.doi.org/10.3390/genes10070527.
Full textAbstract:
Metacaspases (MCs) are cysteine proteases that are important for programmed cell death (PCD) in plants. In this study, we identified 89 MC genes in the genomes of four Gossypium species (Gossypium raimondii, Gossypium barbadense, Gossypium hirsutum, and Gossypium arboreum), and classified them as type-I or type-II genes. All of the type-I and type-II MC genes contain a sequence encoding the peptidase C14 domain. During developmentally regulated PCD, type-II MC genes may play an important role related to fiber elongation, while type-I genes may affect the thickening of the secondary wall. Additionally, 13 genes were observed to be differentially expressed between two cotton lines with differing fiber strengths, and four genes (GhMC02, GhMC04, GhMC07, and GhMC08) were predominantly expressed in cotton fibers at 5–30 days post-anthesis (DPA). During environmentally induced PCD, the expression levels of four genes were affected in the root, stem, and leaf tissues within 6 h of an abiotic stress treatment. In general, the MC gene family affects the development of cotton fibers, including fiber elongation and fiber thickening while four prominent fiber- expressed genes were identified. The effects of the abiotic stress and hormone treatments imply that the cotton MC gene family may be important for fiber development. The data presented herein may form the foundation for future investigations of the MC gene family in Gossypium species.
10
Kämpfer, Peter, Hans-Jürgen Busse, John A. McInroy, and Stefanie P. Glaeser. "Bacillus gossypii sp. nov., isolated from the stem of Gossypium hirsutum." International Journal of Systematic and Evolutionary Microbiology 65, Pt_11 (November 1, 2015): 4163–68. http://dx.doi.org/10.1099/ijsem.0.000555.
Full textAbstract:
A Gram-stain-positive, facultatively anaerobic, endospore-forming organism, isolated from the stem of Gossypium hirsutum, was studied to determine its taxonomic position. On the basis of 16S rRNA gene sequence similarity comparisons, strain JM-267T was grouped in the genus Bacillus, related most closely to the type strains of Bacillus simplex and Bacillus huizhouensis (both 97.8 %), Bacillus muralis (97.7 %), Bacillus butanolivorans and Bacillus psychrosaccharolyticus (both 97.3 %). 16S rRNA gene sequence similarity to the sequences of the type strains of other Bacillus species was < 97.0 %. The fatty acid profile supported the grouping of the strain to the genus Bacillus. As major fatty acids, anteiso-C15 : 0, iso-C15 : 0, iso-C14 : 0 and iso-C16 : 0 were detected. The polar lipid profile contained the major components diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The major quinone was menaquinone 7 (MK-7). DNA–DNA hybridizations with B. simplex DSM 1321T, B. huizhouensis GSS03T, B. muralis LMG 20238T, B. butanolivorans LMG 23974T and B. psychrosaccharolyticus DSM 6T resulted in values clearly below 70 %. In addition, physiological and biochemical test results allowed the clear phenotypic differentiation of strain JM-267T from the most closely related species. Hence, strain JM-267T is considered to represent a novel species of the genus Bacillus, for which the name Bacillus gossypii sp. nov. is proposed. The type strain is JM-267T ( = DSM 100034T = LMG 28742T).
Dissertations / Theses on the topic "Gossypium species"
1
Akhtar, Lal Hussain. "Tissue culture and stress tolerance in Gossypium species." Thesis, Bangor University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296184.
Full text
2
Mauk, Peggy Ann. "Ecology and pathology of Thielaviopsis basicola on Gossypium species." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184489.
Full textAbstract:
Gossypium barbadense (Pima cotton) was planted in a naturally infested field containing 600 cfu/g of Thielaviopsis basicola on two planting dates in 1986 and in 1988 near Coolidge, AZ. Soil temperatures ranged from 18-20 C and 24-26 C at a depth of 15 cm on the first and second planting dates, respectively. During both seasons, disease incidence approached 100% with 75-100% cortical root decay 1 mo after the first planting. Two wk after the second planting, there was an 89% disease incidence in 1986 and 92% in 1988 with 50-75% cortical root decay in both instances. Plant stands were reduced by 28% in 1986 and 32% in 1988 in the first planting and 11% in 1986 and 8% in 1988 in the second planting. In October 1986, 32% and 5% of the plants in the first and second plantings, respectively, had darkened stelar root tissues near the crown that contained hyphae and aleuriospores of T. basicola. G. hirsutum was grown at 20 and 28 C in a growth chamber in soils containing 0, 90, and 600 cfu/g of T. basicola. Seedling stunting and cortical decay increased with inoculum density at both temperatures but were more severe at 20 C. SEM demonstrated that phialoconidia and aleuriospores germinated, produced appressoria, and penetrated within 12 and 48 hr, respectively. Five days after inoculation infected cells were filled with hyphae and aleuriospores. Populations of T. basicola in the test field, in 1986 after 4 yr of planting cotton, were 596, 481, and 142 cfu/g 1, 2, and 7 mo after planting. During 1987 the field was split into two plots. One was planted with wheat and the other was fallowed. In 1987 populations of T. basicola remained stable. In 1988 disease incidence and populations of T. basicola were monitored in the wheat and fallow plots currently planted with Pima cotton. In February 1988 soil populations of T. basicola dropped to 87 cfu/g and 13 cfu/g in the wheat and fallow treatments, respectively. However, in April 1988, 1 mo after planting, Pima cotton growing in the wheat rotation plot had a disease incidence of 71% with an average cortical decay of 47%. In contrast, cotton planted in the fallow treatment had a disease incidence of 43% with an average cortical decay of 23%. At this time populations of T. basicola were 50 and 10 cfu/g in the wheat and fallow treatments, respectively.
3
Lin, Lifeng, Gary Pierce, John Bowers, James Estill, Rosana Compton, Lisa Rainville, Changsoo Kim, et al. "A draft physical map of a D-genome cotton species (Gossypium raimondii)." BioMed Central, 2010. http://hdl.handle.net/10150/610009.
Full textAbstract:
BACKGROUND:Genetically anchored physical maps of large eukaryotic genomes have proven useful both for their intrinsic merit and as an adjunct to genome sequencing. Cultivated tetraploid cottons, Gossypium hirsutum and G. barbadense, share a common ancestor formed by a merger of the A and D genomes about 1-2 million years ago. Toward the long-term goal of characterizing the spectrum of diversity among cotton genomes, the worldwide cotton community has prioritized the D genome progenitor Gossypium raimondii for complete sequencing.RESULTS:A whole genome physical map of G. raimondii, the putative D genome ancestral species of tetraploid cottons was assembled, integrating genetically-anchored overgo hybridization probes, agarose based fingerprints and 'high information content fingerprinting' (HICF). A total of 13,662 BAC-end sequences and 2,828 DNA probes were used in genetically anchoring 1585 contigs to a cotton consensus genetic map, and 370 and 438 contigs, respectively to Arabidopsis thaliana (AT) and Vitis vinifera (VV) whole genome sequences.CONCLUSION:Several lines of evidence suggest that the G. raimondii genome is comprised of two qualitatively different components. Much of the gene rich component is aligned to the Arabidopsis and Vitis vinifera genomes and shows promise for utilizing translational genomic approaches in understanding this important genome and its resident genes. The integrated genetic-physical map is of value both in assembling and validating a planned reference sequence.
4
Goldberg, Natalie Pauline 1960. "HOST AND SITE SPECIFICITY OF CHEMOTACTIC RESPONSES OF ZOOSPORES OF PYTHIUM SPECIES TO ROOTS AND ROOT CAP CELLS OF GOSSYPIUM BARBADENSE AND GOSSYPIUM HIRSUTUM." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276461.
Full textAbstract:
Root cap cells of two cotton species elicited a specific chemotactic response in zoospores of Pythium dissotocum. When roots of cotton seedlings were placed into a suspension of P. dissotocum zoospores, there was immediate attraction, accumulation and encystment exclusively in the root cap cell region. Furthermore, root cap cells remained attractive when isolated from the root: attraction, accumulation, and encystment on individual root cap cells occurred within seconds after contact. Zoospores penetrated and killed isolated root cap cells within 15-30 minutes, and seedlings died within 24 hours. In contrast, zoospores of P. catenulatum, which exhibited a chemotactic response to roots of Bentgrass, were not attracted to and did not infect seedlings or isolated root cap cells of cotton. Preliminary studies indicate that both Pythium species are capable of infecting cotton seedlings in sand culture, though it is not known if either are pathogens on cotton grown in the field.
5
Rong, Ying. "Phylogeny of the genus Gossypium and genome origin of its polyploid species inferred from variation in nuclear repetitive DNA sequences." Texas A&M University, 2004. http://hdl.handle.net/1969.1/3161.
Full textAbstract:
Knowledge of phylogenetic relationships among taxa is essential for comparative and evolutionary genomic research. Here, we report reconstruction of the phylogenetic tree of the genus Gossypium containing cultivated cottons of importance in agriculture by using variation of nuclear repetitive DNA sequences. Genomic DNA was isolated from 87 available accessions of 35 species representing all eight basic genome groups of the genus Gossypium and analyzed to infer phylogeny of the genus and genome origin of its polyploid species. Twenty-two interspersed repeated sequence clones derived from G. hirsutum, each representing a repeated sequence family, were hybridized to the genomic DNA of the 35 species, respectively. Southern hybridization showed that 15 of the repetitive DNA sequences could be detected in all of the eight diploid genome groups, five were A genome-specific, and two were detected in some of the non D-genome groups. A total of 642 major restriction bands of repeated sequences were used for phylogenetic analysis of the species. A phylogenetic tree of the species was constructed, based on the parsimony method and evaluated by the bootstrap approach. The tree was consistent with those previously constructed with different methods in major clades in
which the genealogical lineages of species are largely congruent with genome designations and geographical distribution; but significantly different branching among some of the species was observed. These results not only further confirm the previously phylogenetic analysis of the species and the utility of repetitive DNA sequences for phylogenetic analysis of the genus Gossypium, but also provide new insights into the phylogeny of the genus.
6
Kuklinski, Frank. "The cotton pests in Madagascar with special emphasis on the cotton aphid Aphis gossypii (Hom.: Aphididae) and its natural enemies /." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=959594116.
Full text
7
Smiley-Walters, Sarah Ann. "Interactions between Pigmy Rattlesnakes (Sistrurus miliarius) and a Suite of Prey Species: A Study of Prey Behavior and Variable Venom Toxicity." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483455551984898.
Full text
8
Wu, Yen Hsuan. "Genetic Variation and Evolution of the Size of NBS-LRR-Encoding Gene Family in Cotton and Related Species (Gossypium L.)." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-669.
Full textAbstract:
Most of genes contained in a genome have been shown to exist in forms of
families; however, little is known about their variation and evolution during the course
of genome evolution. The present study shows that the numbers of the genes of the
NBS-LRR-encoding gene family vary extremely significantly among different lines or
cultivars of a species and among related species from the same genus. This suggests
that plant genetics and evolution depend on not only gene sequence variation, but also
the number of genes in multigene families. This study has further revealed that the
variation of number of genes in the gene family in the Gossypium species is affected
significantly not only by genome size variation, polyploidization and natural selection,
but also by domestication/breeding. There is a positive correlation (P less than or equal to 0.05) between
genome size and number of genes in the family, suggesting that species with larger
genomes tend to have more NBS-LRR-encoding genes. It was observed that natural
polyploids have significantly larger numbers of genes in the family and larger genomes
than the artificial polyploids of their putative diploid ancestors. This indicates that
polyploidization, perhaps post-polyploidization as well, either led to the loss of the
genes in a gene family or slowed the process of gene number increase after polyploidization. It was shown that cultivated cottons have significantly more NBSLRR-
encoding genes than wild species at both diploid and polyploidy levels. This
result indicates that plant breeding likely allows accumulation of NBS-LRR-encoding
genes that potentially provide resistance to pathogens. Therefore, plant breeders have
selected not only for favorable alleles and favorable allele combinations, but also for
the number of genes. Finally, difference (P less than or equal to 0.001) was found in number of genes in
the NBS-LRR-encoding gene family among the species native to different geographical
regions, suggesting that natural selection has played an important role in the variation
in number of genes in the NBS-LRR-encoding gene family. The gene members that are
favorable for fitness at the time are selected and accumulated in the genomes, but those
that are not favorable for fitness at the time are lost in natural selection.
As this is the first study in the field, further studies remain. These include, but not
limited to, the universality of the findings in plants and animals, the universality of the
findings in different gene families, genetics of the gene family size variation,
relationship between the gene family size variation and phenotypic variation, gene
family size variation and breeding, etc. Nevertheless, the findings obtained from this
study are sufficient to shed light on many fundamental questions in biology, diversity
and complexity of plants and animals.
9
Kuklinski, Frank [Verfasser]. "The cotton pests in Madagascar : with special emphasis on the cotton aphid Aphis gossypii (Hom.: Aphididae) and its natural enemies / von Frank Kuklinski." 2000. http://d-nb.info/959594116/34.
Full textBook chapters on the topic "Gossypium species"
1
Bajaj, Y. P. S., and M. S. Gill. "Micropropagation of Cotton (Gossypium Species)." In High-Tech and Micropropagation III, 483–504. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-662-07770-2_30.
Full text
2
She, J. M., J. Y. Wu, and H. Y. Zhou. "Regeneration of Plants from Protoplasts of Gossypium Species (Cotton)." In Biotechnology in Agriculture and Forestry, 63–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-57840-3_7.
Full text
3
Liu, Yong-Bo, and Xin-Yu Wang. "Gene flow mitigation by ecological approaches." In Gene flow: monitoring, modeling and mitigation, 125–36. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789247480.0009.
Full textAbstract:
Abstract With an increased area of cultivating genetically modified (GM) plants worldwide, the ecological risks of transgenic plants released into the environment have caused concern. One of the risks is the occurrence of gene flow between GM plants and non-GM plants, including their wild relatives. Gene flow data from oilseed rape (Brassica napus), cotton (Gossypium hirsutum), maize (Zea mays), soybean (Glycine max), rice (Oryza sativa), and wheat (Triticum aestivum) indicate that the frequency of pollen-mediated gene flow is negatively related with distance between donor and recipient plants, and the frequency is relatively high in closely related species. We discuss five main ecological approaches to mitigate gene flow from GM plants to non-GM plants, including distance isolation, border or trap crops, barrier crops, agricultural practices, and through biological means. The required isolation distance has been adopted in managing GM crops in some countries, and cultivating tall crops, or border or trap crops, can decrease the requisite isolation distance to mitigate gene flow. Combining several approaches is more effective than a single approach in mitigating gene flow, because the frequency of pollen-mediated gene flow depends on plant genotype, flowering time, wind speed and direction, and other factors. Thus, in the framework of biosafety assessment of GM plants, mitigating the occurrence of gene flow between GM and non-GM plants is a key step to decrease the ecological risk of post- commercial cultivation of GM plants.
4
S. Kamburova, Venera, Ilkhom B. Salakhutdinov, Shukhrat E. Shermatov, Zabardast T. Buriev, and Ibrokhim Y. Abdurakhmonov. "Cotton as a Model for Polyploidy and Fiber Development Study." In Model Organisms in Plant Genetics [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99568.
Full textAbstract:
Cotton is one of the most important crops in the world. The Gossypium genus is represented by 50 species, divided into two levels of ploidy: diploid (2n = 26) and tetraploid (2n = 52). This diversity of Gossypium species provides an ideal model for studying the evolution and domestication of polyploids. In this regard, studies of the origin and evolution of polyploid cotton species are crucial for understanding the ways and mechanisms of gene and genome evolution. In addition, studies of polyploidization of the cotton genome will allow to more accurately determine the localization of QTLs that determine fiber quality. In addition, due to the fact that cotton fibers are single trichomes originating from epidermal cells, they are one of the most favorable model systems for studying the molecular mechanisms of regulation of cell and cell wall elongation, as well as cellulose biosynthesis.
5
Rai, Krishan Mohan, Anshulika Rai, Kaushik Ghose, and Rahul Singh. "Long noncoding RNAs’ involvement in comprehensive development of Gossypium species." In Long Noncoding RNAs in Plants, 243–55. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-821452-7.00016-7.
Full text
6
S. Katageri, Ishwarappa, S. Anjan Gowda, Prashanth B.N, Mahesh Biradar, Rajeev M, and Rajesh S. Patil. "Prospects for Molecular Breeding in Cotton, Gossypium spp." In Plant Breeding - Current and Future Views [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94613.
Full textAbstract:
Conventional breeding interventions in cotton have been successful and these techniques have doubled the productivity of cotton, but it took around 40 years. One of the techniques of molecular biology i.e., genetic engineering has brought significant improvement in productivity within the year of introduction. With cotton genomics maturing, many reference genomes and related genomic resources have been developed. Newer wild species have been discovered and many countries are conserving genetic resources within and between species. This valuable germplasm can be exchanged among countries for increasing cotton productivity. As many as 249 Mapping and Association studies have been carried out and many QTLs have been discovered and it is high time for researchers to get into fine-mapping studies. Techniques of genomic selection hold valuable trust for deciphering quantitative traits like fiber quality and productivity since they take in to account all minor QTLs. There are just two studies involving genomic selection in cotton, underlining its huge prospects in cotton research. Genome editing and transformation techniques have been widely used in cotton with as many as 65 events being developed across various characters, and eight studies carried out using crisper technology. These promising technologies have huge prospects for cotton production sustainability.
7
Baloji, Gugulothu, Lali Lingfa, and Shivaji Banoth. "Bioinformatics Tools and Genomic Resources Available in Understanding the Structure and Function of Gossypium." In Cotton. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102355.
Full textAbstract:
Gossypium spp. (Cotton) is the world’s most valuable natural fiber crop. Gossypium species’ variety makes them a good model for studying polyploid evolution and domestication. The past decade has seen a dramatic shift in the field of functional genomics from a theoretical idea to a well-established scientific discipline. Cotton functional genomics has the potential to expand our understanding of fundamental plant biology, allowing us to more effectively use genetic resources to enhance cotton fiber quality and yield, among with using genetic data to enhance germplasm. This chapter provides complete review of the latest techniques and resources for developing elite cotton genotypes and determining structure that have become accessible for developments in cotton functional genomics. Bioinformatics resources, including databases, software solutions and analytical tools, must be functionally understood in order to do this. Aside from GenBank and cotton specific databases like CottonGen, a wide range of tools for accessing and analyzing genetic and genomic information are also addressed. This chapter has addressed many forms of genetic and genomic data now accessible to the cotton community; fundamental bioinformatics sources related to cotton species; and with these techniques cotton researchers and scientists may use information to better understand cotton’s functions and structures.
8
Kumar, Mahadevan, Nallathambi Premalatha, Lakshmanan Mahalingam, Nalliappan Sakthivel, Kannan Senguttuvan, and Paramanandham Latha. "High Density Planting System of Cotton in India: Status and Breeding Strategies." In Plant Breeding - Current and Future Views [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94905.
Full textAbstract:
Cotton, a crop of choice, occupies the second premier position next to food crops in providing clothing. Though 53 species of Gossypium are available, only four species are cultivable and among the four, the major cultivable area falls under G. hirsutum. Though varieties with medium, superior medium, long and extra long staple cotton were released earlier, with the advent of machineries, ginning facilities, mills were literally requiring cotton fiber of any length. With the advent of Bt technology and the release of hybrids during 2002, cotton productivity had a momentum. However, considering the duration, cost involved in manual harvesting etc., farmers were looking for alternate option and High Density Planting System (HDPS) offered a promise in this direction. Farmers were looking for genotypes that could yield better under higher planting densities with fewer bolls per plant, synchronized maturity with uniform bursting. Efforts have been taken all over the World in this direction and India is not an exception. Handful of varieties fitting to this situation has been released from many of the Universities. This chapter essentially summarizes the genetic, agronomic, plant protection interventions and the futuristic requirements for achieving at least 700 kg of lint per hectare.
9
P. Etukuri, Shalini, Varsha C. Anche, Mirzakamol S. Ayubov, Lloyd T. Walker, and Venkateswara R. Sripathi. "Transcriptome Analysis Using RNA Sequencing for Finding Genes Related to Fiber in Cotton: A Review." In Cotton [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.104572.
Full textAbstract:
The cotton crop is economically important and primarily grown for its fiber. Although the genus Gossypium consists of over 50 species, only four domesticated species produce spinnable fiber. However, the genes determine the molecular phenotype of fiber, and variation in their expression primarily contributes to associated phenotypic changes. Transcriptome analyses can elucidate the similarity or variation in gene expression (GE) among organisms at a given time or a circumstance. Even though several algorithms are available for analyzing such high-throughput data generated from RNA Sequencing (RNA-Seq), a reliable pipeline that includes a combination of tools such as an aligner for read mapping, an assembler for quantitating full-length transcripts, a differential gene expression (DGE) package for identifying differences in the transcripts across the samples, a gene ontology tool for assigning function, and enrichment and pathway mapping tools for finding interrelationships between genes based on their associated functions are needed. Therefore, this chapter first introduces the cotton crop, fiber phenotype, transcriptome, then discusses the basic RNA-Seq pipeline and later emphasizes various transcriptome analyses studies focused on genes associated with fiber quality and its attributes.
10
Nagarajan, Sathees, Yazhni Purushothaman, Monika Selvavinayagam, Pandidurai Govindharaj, and Aasif Musthafa. "Studies on Colored Cotton: Biochemical and Genetic Aspects." In Cotton. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.104898.
Full textAbstract:
Cotton (Gossypium hirsutum L.) is a commercially important fiber crop used as the primary raw material in the textile industry and is cultivated throughout the world. Normally cotton fiber is white color and various dyes are used to color the fiber. In textile industry, the process of artificial dying is a major source of pollution to the environment and the cost of dying is also higher. Apart from the white fiber, several cotton species have colored fiber which can be used to reduce the dying process and its ill effects to the environment. The cotton fiber color inheritance pattern is an urgent problem. The physical and chemical properties of colored cotton are determined by its chemical composition. The naturally colored cotton contain some important properties such as, greater hygiene, hypoallergenic properties, lower flammability and higher ultraviolet protection value compared to traditional white cotton. The natural colored cotton loss their market value due to the poor fiber quality. Understanding of the colored cotton pigment composition, biochemical and genetic prospects of colored cotton will be useful for the development of high quality of colored cotton.