Academic literature on the topic 'Pitcher plants Morphology'
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Journal articles on the topic "Pitcher plants Morphology"
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Schwallier, Rachel, Valeri van Wely, Mirna Baak, Rutger Vos, Bertie Joan van Heuven, Erik Smets, Rogier R. van Vugt, and Barbara Gravendeel. "Ontogeny and Anatomy of the Dimorphic Pitchers of Nepenthes rafflesiana Jack." Plants 9, no. 11 (November 18, 2020): 1603. http://dx.doi.org/10.3390/plants9111603.
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An enigmatic feature of tropical pitcher plants belonging to the genus Nepenthes is their dimorphic prey-capturing pitfall traps. In many species, the conspicuously shaped upper and lower pitchers grow from a swollen leaf tendril tip until finally opening as insect-alluring devices. Few have studied the ontogeny of these traps from an anatomical and quantitative morphological perspective. We investigated whether the anatomy and development of lower and upper type pitchers of N. rafflesiana differ or overlap in terms of 3D geometric morphology and microstructure progression and presence. We hypothesized that there is an overlap in the initial, but not all, developmental stages of the two pitcher types and that one pitcher type is suspended in development. We identified four important morphological changes of pitcher ontogeny and defined these as curvation, elongation, inflation and maturation phases. Pitcher length indicated progress through developmental phases, and we propose to use it as a tool for indication of developmental stage. Microstructure development coincided with the developmental phases defined. Additionally, we discovered a new anatomical feature of extrafloral nectariferous peristomal glands between the inner peristome ridges of upper and lower pitchers being hollow and analyze the chemistry of the sugars on the outside of these glands. Ontogenetic shape analysis indicated that upper and lower pitcher types develop with similar phase progression but have no directly overlapping morphology. This means that upper pitchers are not a derived state from lower pitchers. Independent developmental programs evolved to produce distinctly shaped upper and lower pitchers in Nepenthes, likely to exploit different food sources.
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Ristiawan, Hani, and Agus Hikmat. "The PREY COMPOSITION OF Nepenthes gymnamphora Reinw. Ex Nees AT MOUNT BISMO, DERODUWUR HIKING TRAIL, WONOSOBO, CENTRAL JAVA." Media Konservasi 27, no. 3 (December 21, 2022): 116–20. http://dx.doi.org/10.29244/medkon.27.3.116-120.
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Nepenthes gymnamphora (kantong semar, palaeotropic pitcher plant) is a carnivorous plant that spreads across the mountains of Java, one of which is on Mount Bismo, Dieng Mountains, Central Java. The prey composition N. gymnamphora here has not been studied before. The purpose of this study was to identify the composition of prey of N. gymnamphora in the Deroduwur Hiking Trail, Mount Bismo, Wonosobo, Central Java. The method used is the identification of prey in the pitcher that has been opened, both the upper and lower pitcher types. The main prey of N. gymnamphora are invertebrates from the ordo of Hymenoptera, Blattodea, Diptera, Araneae, and Diplura. Based on the prey composition analysis, there was a tendency of pitcher dimorphism, namely the upper pitcher of N. gymnamphora tended to contain flying invertebrates, while the lower pitcher tended to contain terrestrial invertebrates. This is influenced by the morphology of the pitcher, the upper pitcher tends to be lighter in color than the lower pitcher so that it is more attractive to fly invertebrates. In addition, the pitcher of N. gymnamphora provides a microhabitat for the larvae of Culicidae and Syrphidae.
Keywords: carnivorous plants, Mount Bismo, Nepenthes gymnamphora, prey composition.
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Novitasari, Yeyen, and Yupi Isnaini. "PROPAGATION OF PITCHER PLANTS (Nepenthes gracilis KORTH. AND Nepenthes reinwardtiana MIQ.) THROUGH CALLUS INDUCTION." Agric 33, no. 2 (December 10, 2021): 81–92. http://dx.doi.org/10.24246/agric.2021.v33.i2.p81-92.
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In vitro propagation of pitcher plants is still limited only using seeds, while the other in vitro methods using leaf explants such as embryogenesis, organogenesis, and callus culture has not been widely reported. The research aims to study the growth response of leaf explants in two species of pitcher plants (Nepenthes gracilis and Nepenthes reinwardtiana), which formed callus in several treatment media combinations. Leaf pieces were taken from a 4-month pitcher plant culture were grown on the treatment media, namely modified media of Murashige & Skoog with a half concentration (½ MS) added 2.4-Dichlorophenoxoxyacetate (2.4-D) with a concentration of 0, 0.5, 1, 1.5, and 2 mg L-1 and kinetin (0.5 mg L-1). The treatment was then stored in a dark environment to induce callus formation. The observation for 12 weeks showed that the time of callus formation in two species of pitcher plant observed was not significantly different. Both species of pitcher plants begin to form callus in the fourth week after treatment. None of the leaf explants were planted on the control medium without hormones formed callus. The best medium for callus induction in N. gracilis is ½ MS medium added with 2 mg L-1 2,4-D and 0.5 mg L-1 kinetin, with callus morphology brownish-white with friable texture. In comparison, the optimum callus media from leaf explant of N. reinwardtiana has not been obtained yet. Thus further research is still needed.
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Lenihan, William, and Rachel Schultz. "Carnivorous pitcher plant species (Sarracenia purpurea) increases root growth in response to nitrogen addition." Botany 92, no. 12 (December 2014): 917–21. http://dx.doi.org/10.1139/cjb-2014-0172.
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Nitrogen (N) deposition from anthropogenic sources can facilitate the encroachment of plant species with high-N demands into nutrient-poor ecosystems such as sphagnum bogs. Prior research has demonstrated that altered leaf morphology of the carnivorous pitcher plant Sarracenia purpurea L. can serve as a biological indicator of increased bog nitrification. Our objective was to assess the effect of N addition on the root morphology of S. purpurea. To make this assessment, nine S. purpurea plants were grown in microcosms with their roots positioned on transparent acrylic tubes so that root growth could be monitored. Three replicate microcosms received either a high-N treatment (1.0 mg NH4-N·L−1), low-N treatment (0.1 mg NH4-N·L−1), or no additional N. After 7 weeks, we scanned the roots with WinRhizo Pro software, recorded leaf dimensions, and measured the dry mass of the roots and leaves. The high-N treatment had significantly greater root length, surface area, and dry biomass than the controls. In contrast, we found no difference in leaf dimensions or aboveground biomass among treatments. The results of this study support our hypothesis that S. purpurea increases root growth to uptake nutrients from the soil under conditions of increased N deposition.
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MORAN, J. "Aspects of Pitcher Morphology and Spectral Characteristics of Six BorneanNepenthesPitcher Plant Species: Implications for Prey Capture." Annals of Botany 83, no. 5 (May 1999): 521–28. http://dx.doi.org/10.1006/anbo.1999.0857.
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HANDAYANI, TRI. "Flower morphology, floral development and insect visitors to flowers of Nepenthes mirabilis." Biodiversitas Journal of Biological Diversity 18, no. 4 (October 7, 2017): 1624–31. http://dx.doi.org/10.13057/biodiv/d180441.
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Handayani T. 2017. Flower morphology, floral development and insect visitors to flowers of Nepenthes mirabilis. Biodiversitas 18: 1624-1631. Nepenthes mirabilis Druce is a commercial ornamental pitcher plant belonging to the Nepenthaceae. This species is often used as a parent plant in artificial crossbreeding. The plant is also used in traditional medicine, rope-making, handicraft, and bouquets. Flower development and pollen maturity are important factors in pitcher plant crossbreeding. However, information about its flowering is still lacking. This study aimed to record the flower morphology, flower development, and faunal visitors to male inflorescences of N. mirabilis planted in Bogor Botanic Gardens, West Java, Indonesia. Twelve racemes of flowers were taken as a sample for observing the process of inflorescence development, while ten flowers on each raceme were observed for investigating the flowering pattern of individual flowers. The morphology of flowers, the process of inflorescence development, the flowering pattern for individual flowers, the number of open flowers, the longevity of anthesis, and the appearance of insect (and/or other faunal) visitors to flowers were observed and recorded, using naked eyes, a hand lens, and a camera. Six phases of inflorescence development were identified: inflorescence bud phase, raceme phase, the opening of the raceme-protecting sheath phase, inflorescence-stalk and flowerstalk growth phase, open flower phase and pollen maturity phase. Four phases of flower development were observed: growth of flower bud, the opening of tepals, pollen maturation, and flower senescence. The pattern of anthesis within an inflorescence was acropetal. The number of flowers per raceme was 56 to 163. The peak duration of anthesis of a flower was 11 days (30.7% of flowers). The length of the raceme-stalks was 17-31 cm. The length of the racemes was 23-38 cm. The most common visitors to the flowers were stingless bees, Trigona apicalis.
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Sanders, R. H. "Spiral structure generated by major planets in protoplanetary disks." Astronomy & Astrophysics 641 (September 2020): A169. http://dx.doi.org/10.1051/0004-6361/202037624.
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In this paper I describe numerical calculations of the motion of particles in a disk about a solar-mass object perturbed by a planet on a circular orbit with mass greater than 0.001 of the stellar mass. A simple algorithm for simulating bulk viscosity is added to the ensemble of particles, and the response of the disk is followed for several planet orbital periods. A two-arm spiral structure forms near the inner resonance (2–1) and extends to the planetary orbit radius (corotation). In the same way for gaseous disks on a galactic scale perturbed by a weak rotating bar-like distortion, this is shown to be related to the appearance of two perpendicular families of periodic orbits near the resonance combined with dissipation which inhibits the crossing of streamlines. Spiral density enhancements result from the crowding of streamlines due to the gradual shift between families. The results, such as the dependence of pitch-angle on radius and the asymmetry of the spiral features, resemble those of sophisticated calculations that include more physical effects. The morphology of structure generated in this way clearly resembles that observed in objects with well-defined two-arm spirals, such as SAO 206462. This illustrates that the process of spiral formation via interaction with planets in such disks can be due to orbital motion in a perturbed Keplerian field combined with kinematic viscosity.
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Shea-Vantine, Caitlin S., Katherine A. Galloway, Danielle N. Ingle, Marianne E. Porter, and Stephen M. Kajiura. "Caudal Spine Morphology and Puncture Performance of Two Coastal Stingrays." Integrative and Comparative Biology 61, no. 2 (May 14, 2021): 749–58. http://dx.doi.org/10.1093/icb/icab077.
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Abstract A diagnostic characteristic of stingrays in the family Dasyatidae is the presence of a defensive, partially serrated spine located on the tail. We assessed the contribution of caudal spine morphology on puncture and withdrawal performance from two congeneric, co-occurring stingrays, the Atlantic stingray, Hypanus sabinus, and the bluntnose stingray, Hypanus say. Spines exhibited a high degree of morphological variability. Stingray spines were serrated along 50.8% (H. sabinus) or 62.3% (H. say) of their length. Hypanus say had a greater number of serrations along each side of the spine (30.4) compared with H. sabinus (20.7) but the pitch did not differ between species. We quantified spine puncture and withdrawal forces using porcine skin as a model for human skin. Puncture and withdrawal forces did not differ significantly between species, or within H. say, but withdrawal force was greater than puncture force for H. sabinus. We incorporated micro-computed tomography scanning to quantify tissue mineral density and found that for both species, the shaft of the spine was more heavily mineralized than the base, and midway (50%) along the length of the spine was more heavily mineralized than the tip. The mineralization variability along the spine shaft may create a stiff structure that can fracture once embedded within the target tissue and act as an effective predator deterrent.
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Hager, Emily R., and Hopi E. Hoekstra. "Tail Length Evolution in Deer Mice: Linking Morphology, Behavior, and Function." Integrative and Comparative Biology 61, no. 2 (April 19, 2021): 385–97. http://dx.doi.org/10.1093/icb/icab030.
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Abstract Determining how variation in morphology affects animal performance (and ultimately fitness) is key to understanding the complete process of evolutionary adaptation. Long tails have evolved many times in arboreal and semi-arboreal rodents; in deer mice, long tails have evolved repeatedly in populations occupying forested habitat even within a single species (Peromyscus maniculatus). Here, we use a combination of functional modeling, laboratory studies, and museum records to test hypotheses about the function of tail-length variation in deer mice. First, we use computational models, informed by museum records documenting natural variation in tail length, to test whether differences in tail morphology between forest and prairie subspecies can influence performance in behavioral contexts relevant for tail use. We find that the deer- mouse tail plays little role in statically adjusting center of mass or in correcting body pitch and yaw, but rather it can affect body roll during arboreal locomotion. In this context, we find that even intraspecific tail-length variation could result in substantial differences in how much body rotation results from equivalent tail motions (i.e., tail effectiveness), but the relationship between commonly-used metrics of tail-length variation and effectiveness is non-linear. We further test whether caudal vertebra length, number, and shape are associated with differences in how much the tail can bend to curve around narrow substrates (i.e., tail curvature) and find that, as predicted, the shape of the caudal vertebrae is associated with intervertebral bending angle across taxa. However, although forest and prairie mice typically differ in both the length and number of caudal vertebrae, we do not find evidence that this pattern is the result of a functional trade-off related to tail curvature. Together, these results highlight how even simple models can both generate and exclude hypotheses about the functional consequences of trait variation for organismal-level performance.
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Vogler, D. R., T. R. Gordon, B. J. Aegerter, S. C. Kirkpatrick, G. A. Lunak, P. Stover, and P. Violett. "First Report of the Pitch Canker Fungus (Fusarium circinatum) in the Sierra Nevada of California." Plant Disease 88, no. 7 (July 2004): 772. http://dx.doi.org/10.1094/pdis.2004.88.7.772a.
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The pitch canker fungus, Fusarium circinatum (teleomorph Gibberella circinata), was isolated from a branch originating from rootstock of a Douglas-fir (Pseudotsuga menziesii) graft in a breeding orchard at 1,000m elevation in El Dorado County, California. We visited the orchard after the New Zealand Ministry of Agriculture and Forestry reported in November 2003 that a Douglas-fir scion (branch cutting) shipped from there in January—and subsequently grafted and held in a quarantine facility near Christchurch—was infected with the pitch canker fungus. We took samples throughout the orchard of any branches that appeared unhealthy. In addition, asymptomatic branches from the tree alleged to be the source of the New Zealand infestation were collected to assay for propagules of F. circinatum. Wash water from these branches was negative for the pathogen. Likewise, F. circinatum was not recovered from water washings of 20 branches collected randomly throughout the orchard. Fifteen branch samples collected from symptomatic Douglas-fir grafts were cultured on water agar and only one yielded a colony with an appearance consistent with F. circinatum. A single spore subculture of this isolate was confirmed as F. circinatum on the basis of colony morphology and the structure of the microconidiophores (1). The virulence of this isolate was evaluated by inoculating susceptible 2-year-old Monterey pine (Pinus radiata) seedlings with a toothpick to wound the main stem and insert potato dextrose agar colonized by the fungus. Twenty-four days later, pitching and yellow needles were evident at the site of inoculation, and removal of the bark revealed resin-soaked and discolored tissue. Concurrent with the pathogenicity test described above, a culture of the putative F. circinatum isolated in New Zealand was inoculated into Monterey pines with an identical outcome. The fungus was reisolated from lesions from both sets of inoculations and confirmed as F. circinatum based on morphological criteria. Isolates GL285 and GL286 are available from T. R. Gordon upon request. Prior to its discovery in the Sierra Nevada, pitch canker in California was known only from counties on or near the coast. Our report indicates the pathogen can survive and infect trees 110 km east of the previous most-inland site of infestation. It remains to be seen how extensively pitch canker will develop in the Sierra Nevada. Douglas-fir is only moderately susceptible to F. circinatum, which has not been observed to cause significant damage to this species. On the other hand, low-elevation Sierra Nevada pines including P. sabiniana, P. coulteri, and P. ponderosa are substantially more susceptible than are Douglas-fir in greenhouse tests (2). References: (1) T. R. Gordon et al. Mycol. Res. 100:850, 1996. (2) T. R. Gordon et al. Plant Dis. 85:1128, 2001.
Dissertations / Theses on the topic "Pitcher plants Morphology"
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Lemmons, Justin M. "Nutrient Availability Affects Flowering Rate but has Limited Influence on Morphology of the Hooded Pitcher Plant, Sarracenia minor." UNF Digital Commons, 2013. http://digitalcommons.unf.edu/etd/475.
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Carnivorous plants perform as both producers and consumers. Botanical carnivory has evolved in sunny, moist, nutrient-poor environments, and the primary nutrient supplied by prey is proposed to be nitrogen. There is a trade-off between carnivorous and photosynthetic structures which corresponds to degree of carnivory expression and available nutrients. This study was conducted on the hooded pitcher plant, Sarracenia minor, which is a facultative wetland plant and Florida-threatened species. Sarracenia minor is considered a specialist myrmecophage and ants characterize the majority of attracted and captured prey. Ants not only provide nutritional benefit, but also protection against herbivory. A natural population of S. minor in northeast Florida was selected to test response to prey and fertilizer nitrogen in a press-experimental design. Introduced fire ants (Solenopsis invicta) and ammonium nitrate (NH4NO3) were used as prey and fertilizer nitrogen sources, respectively. Treatments included: 1) ant addition; 2) fertilizer addition; 3) ant addition/fertilizer addition; 4) no ants/no fertilizer; 5) control. Treatments were administered biweekly and morphological characteristics and herbivory were measured monthly from April-November 2012. Results indicated no significant treatment effects on plant performance and morphological characteristics, except for a significantly greater number of flowers displayed by the nutrient-deprived group (p < .005). Herbivory by Exyra semicrocea also showed a marginally significant negative effect on the tallest pitchers per ramet. Since nitrogen is primarily stored by pitchers and allocated to new growth in the following growing season, the predictive power of this study may be limited. However, increased flowering rate in the nutrient-deprived group suggests that plants were induced to flower from nutrient stress. Also, a burn at the beginning of the study likely influenced nutrient availability and plant response to experimental treatments. In conclusion, stress may have occurred from both fire and nutrients, and S. minor showed resistance and poor response to nitrogen addition.
Books on the topic "Pitcher plants Morphology"
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Bauer, Ulrike, Reinhard Jetter, and Simon Poppinga. Non-motile traps. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198779841.003.0015.
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Movement-independent trapping mechanisms are based on stickiness, slipperiness, and direction-dependent mechanical obstruction. Here, the implementation of these principles in flypaper, pitfall, and eel traps is discussed in the light of recent scientific advances. The chemical composition and rheological properties of trapping fluids, and the (micro-) morphology of trapping surfaces, are related to their functions. Recent discoveries including the role of surface wettability in prey capture by pitcher plants are presented, and the ecological implications of temporal variations of trap performance and promising directions for future research are discussed.
Conference papers on the topic "Pitcher plants Morphology"
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Leinert, S., S. Jansen, N. Martin, D. Breuer, and W. Werner. "Techniques for Analyzing Solder Joint Properties and Damages in FBGA Packages." In ISTFA 2006. ASM International, 2006. http://dx.doi.org/10.31399/asm.cp.istfa2006p0351.
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Abstract The demand for shifting from lead-containing to lead-free solder materials as well as the ongoing efforts for an improvement of the solder joint robustness for fine-pitch ball grid array packages requires ongoing testing of fresh solder alloys, changes in landing pad metallization and reflow processes. This testing includes mechanical and thermal stress tests and a detailed failure and material analysis. Besides the commonly used analysis methods like optical microscopy, scanning electron microscope (SEM) imaging of cross sections, fracture planes and energy dispersive X-ray compositional analyses, other techniques such as ion channeling contrast and transmission electron microscope (TEM) imaging can provide valuable information on intermetallic compounds (IMC) formation at solder joint interfaces. This paper discusses the advantages of SEM imaging of IMC morphology at the pad interface resulting from solder ball etching, focused ion beam imaging of solder ball cross sections with ion channeling contrast, and TEM analyses of failures.