Relevant bibliographies by topics / Plant regulators

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Plant regulators'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 August 2024

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Journal articles on the topic "Plant regulators"

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Carvalho, Deived Uilian de, Maria Aparecida da Cruz, Elisete Aparecida Fernandes Osipi, Conceição Aparecida Cossa, Ronan Carlos Colombo, and Maria Aparecida Fonseca Sorace. "PLANT GROWTH REGULATORS ON ATEMOYA SEEDS GERMINATION." Nucleus 15, no. 2 (October 30, 2018): 457–62. http://dx.doi.org/10.3738/1982.2278.2832.

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Végvári, György, and Edina Vidéki. "Plant hormones, plant growth regulators." Orvosi Hetilap 155, no. 26 (June 2014): 1011–18. http://dx.doi.org/10.1556/oh.2014.29939.

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Plants seem to be rather defenceless, they are unable to do motion, have no nervous system or immune system unlike animals. Besides this, plants do have hormones, though these substances are produced not in glands. In view of their complexity they lagged behind animals, however, plant organisms show large scale integration in their structure and function. In higher plants, such as in animals, the intercellular communication is fulfilled through chemical messengers. These specific compounds in plants are called phytohormones, or in a wide sense, bioregulators. Even a small quantity of these endogenous organic compounds are able to regulate the operation, growth and development of higher plants, and keep the connection between cells, tissues and synergy beween organs. Since they do not have nervous and immume systems, phytohormones play essential role in plants’ life. Orv. Hetil., 2014, 155(26), 1011–1018.
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Fletcher, R. A. "Plant Biochemical Regulators." Journal of Environmental Quality 22, no. 1 (January 1993): 214. http://dx.doi.org/10.2134/jeq1993.00472425002200010031x.

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Gressel, J. "Plant Biochemical Regulators." Plant Science 85, no. 1 (January 1992): 123–24. http://dx.doi.org/10.1016/0168-9452(92)90105-u.

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Iwahori, Shuichi. "Plant biochemical regulators." Scientia Horticulturae 59, no. 3-4 (November 1994): 303–4. http://dx.doi.org/10.1016/0304-4238(94)90024-8.

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Dey, P. M. "Plant biochemical regulators." Phytochemistry 32, no. 1 (December 1992): 228. http://dx.doi.org/10.1016/0031-9422(92)80145-5.

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Gubiš, J., Z. Lajchová, L. Klčová, and Z. Jureková. "Influence of growth regulators on plant regeneration in tomato." Horticultural Science 32, No. 3 (November 23, 2011): 118–22. http://dx.doi.org/10.17221/3777-hortsci.

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We studied the effect of different plant growth regulators on in vitro regeneration and plant growth of three cultivars of tomato (Lycopersicon esculentum Mill.) from explants derived from hypocotyls and cotyledons of aseptically grown seedlings. The regeneration capacity was significantly influenced by cultivar and explant type. The highest number of shoots regenerated in both types of explants was recorded on MS medium supplemented with 1.0 mg/dm<sup>3</sup> zeatin and 0.1 mg/dm<sup>3</sup> IAA. The cultivar UC 82 showed the best regeneration capacity on all types of used media. The most responsive explants were hypocotyls with 90&ndash;92% regeneration in dependence on the used cultivars and mean production from 0.18 to 0.38 shoots per explant. &nbsp;
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Murti, G. S. R., and K. K. Upreti. "Plant Growth Regulators in Water Stress Tolerance." Journal of Horticultural Sciences 2, no. 2 (December 31, 2007): 73–93. http://dx.doi.org/10.24154/jhs.v2i2.611.

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The present review provides an insight into the relationship between plant growth regulators and water stress with emphasis on metabolic events that regulate growth regulator balance and physiological responses. Possible mechanisms by which ABA controls stomatal function and growth under stress, and interacts with proteins and important osmo-protectants, have been discussed. ABA involvement in signal transduction and root-shoot communication through its effects on gene and gene products is also included. A brief description of involvement of other growth regulators such as cytokinins, ethylene, polyamines and brasssinosteroids in water stress tolerance is also provided. Salient achievements in exploiting the potential of growth regulators in the resistance to water stress in some horticultural crops are also given. Gaps in existing information on plant growth regulator research in water stress tolerance have been summarized.
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Shaw, Sabrina L., Eddie B. Williams, and William F. Hayslett. "303 Effect of Growth Regulators on the Growth and Performance of Celosia plumosus." HortScience 34, no. 3 (June 1999): 494F—495. http://dx.doi.org/10.21273/hortsci.34.3.494f.

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Seedlings of Celosia plumosus `New Look', a new variety, were evaluated for their response to the recommended rates of three different plant growth regulators commonly used by growers. The plant growth regulators were B-nine, paclobutrazol, and uniconizole. These plant growth regulators were applied at the rate recommended by the manufacturer for this species. Group I, the control, was not treated with a plant growth regulator, but was sprayed with water at the same time the other treatments were applied. Plants were grown in 5-inch plastic pots in the greenhouse. Plant height was recorded before treatment and once weekly thereafter for the duration of the experiment. Upon termination of the experiment, plant top fresh weight and top dry weight were measured. Results showed that at the recommended rate for all three plant growth regulators, there were no significant difference in height or weight between the plant growth regulator-treated groups of plants or the control group. The only observable difference noted was in leaf coloration of the plants treated with plant growth regulators.
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Karneta, Railia, Nurlaili Fitri Gultom, Dewi Meidalima, and Nyimas Manisah. "Growth and Yield Response of Arumba (Zea mays L. Ceratina) Glutinous Corn Varieties Toward Ameliorants and Growth Regulators on Peatland." BIOVALENTIA: Biological Research Journal 8, no. 1 (February 1, 2022): 36–42. http://dx.doi.org/10.24233/biov.8.1.2022.247.

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Planting glutinous corn on peatland must be treated using ameliorant ingredients of manure fermented with EM4 and growth regulators. Ameliorated peatland can accelerate the supply of organic and mineral compounds which is easily absorbed by plants so that production can be optimized. This study aims to see the response of ameliorant ingredients and growth regulators on the growth and production of glutinous corn of Arumba (Zea mays L. Ceratina) variety on peatland. This study used a randomized block design (RAK) in factorial consisting of two factors, and three replications. The first factor was the ameliorant material (A), namely A0 = without ameliorant (control), A1 = cow manure fermented with EM4, A2 = chicken manure fermented with EM4, A3 = goat manure fermented with EM4 and he second factor is the type of Growth Regulatory Substance (ZPT), namely Z0 = without ZPT (control), Z1 = Superior Plant Hormone Growth Regulator (Ghost), Z2 = Harmonic Growth Regulatory Substance, Z3 = Atonic Growth Regulator Substance. The variables observed included plant height (cm), stem diameter (cm), weight of wet bean (g), weight of ear (g), length of ear (cm) diameter of ear (cm). The results showed that the ameliorant material from chicken manure fermented with EM4 and the use of superior plant hormone growth regulators (phantoms) provide optimal growth and production of glutinous corn because it corresponds to the description of glutinous corn of the Arumba variety, and is the best treatment.
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Dissertations / Theses on the topic "Plant regulators"

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Johnson, Robert Jean. "Plant growth regulators : an alternative to frequent mowing /." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA232051.

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Thesis (M.S. in Management)--Naval Postgraduate School, June 1990.
Thesis Advisor(s): Carrick, Pual M. "June 1990." Description based on signature page. DTIC Identifier(s): Plant growth regulators, growth indicators. Author(s) subject terms: Plant growth regulators, growth indicators. Includes bibliographical references (p. 39-40). Also available online.
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Nasim, Muhammad. "Response of rice plants to plant growth regulators under saline conditions." Thesis, University of Aberdeen, 2003. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU164162.

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Responses of rice to plant growth regulators on germination and seedling growth under NaCl salinity were studied to identify possible means of increasing salinity tolerance. Gibberellic acid (GA) promoted germination processes and a-amylase activity and increased plumule but reduced radicle growth after emergence. GA partitioned more metabolites towards the plumule than the radicle. Chlormequat (CCC) showed no beneficial effects and abscisic acid (ABA) inhibited germination under saline conditions. Overall there was no large difference in the performance of three rice varieties, BR29, IR8 and Pokkali in germination. Artificially aged seeds showed increased sensitivity to salinity and GA produced similar effects on germination of artificially aged rice seeds as on unaged seeds. Seed pre-treatment with GA was as effective in promoting germination under saline conditions as applying GA in the germination media. GA with low Ca promoted germination and plumule growth as well as radicle growth. GA increased plant height and fresh weight of seedlings under saline conditions, however it did not show a large positive effect on rice seedlings. CCC had no beneficial effects on rice seedlings. ABA showed possible beneficial effects on rice seedlings as it reduced Na+ uptake and increased K+ and Ca2+ uptake. GA in combination with ABA appeared to adapt rice plants better to saline conditions. GA in combination with low Ca also promoted rice growth under saline conditions.
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Soomro, M. H. "The effects of plant parasitic nematodes and plant growth regulators on root growth of graminacious plants." Thesis, University of Reading, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378682.

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Fuentes, Hector David. "Studies in the use of plant growth regulators on phytoremediation /." View thesis View thesis, 2001. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030505.150607/index.html.

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Thesis (Ph.D.) -- University of Western Sydney, Macarthur, 2001.
A thesis presented to the University of Western Sydney, in partial fulfillment of the requirements for the degree of Doctor of Philosophy, December, 2001. Bibliography : leaves 163-173.
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McCoy, Mark Christopher. "The effects of phytohormones on growth and artemisinin production in hairy root cultures of artemisia annua l." Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-0529103-162012/.

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Hay, Elizabeth Irene. "Somatic embryo development and phenotypic variation in an abscisic acid-independent line of Larix x eurolepis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0028/NQ32748.pdf.

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Huang, Shuai. "Using chemical genetics to discover regulators in plant immunity." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44065.

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Temple-Smith, Kay Elizabeth. "The mode of action of novel plant growth regulators." Thesis, University of Bristol, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317880.

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Norton, E. R., L. J. Clark, H. Borrego, and Bryan Ellsworth. "Evaluation of Two Plant Growth Regulators from LT Biosysn." College of Agriculture, University of Arizona (Tucson, AZ), 2005. http://hdl.handle.net/10150/198160.

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A single field study was conducted during the 2004 cotton growing season at the University of Arizona Safford Agricultural Center to evaluate the effect of two plant growth regulators (PGRs) manufactured by LT Biosyn Inc. on the growth, development, yield, and fiber quality of cotton grown in the southeastern region of the state. This test was designed as a follow up study to work that was performed in 2003 on a grower cooperator site that demonstrated positive lint yield responses to the use of one of the PGRs used in this project. This was an eight treatment test involving the application of two PGRs, HappyGroTM (HG) and MegaGroTM (MG). The two formulations are intended to have different effects on plant growth and development. The HG formulation is a kinetin based product designed to enhance cell division and differentiation. The MG formulation is designed to enhance root growth early in the season. Several treatment combinations were designed to investigate varying scenarios of application of these two products alone and in conjunction with each other. The test included a control and each treatment was replicated four times in a randomized complete block design. Plant measurements were collected throughout the season to look for differences in plant growth and development. Lint yield was estimated by harvesting the entire plot and weighing the seedcotton with a weigh wagon equipped with load cells. Sub samples were collected for fiber quality and percent lint determinations. Plant measurements revealed extremely high fruit retention levels throughout the entire season with end of season levels near 75%. This high fruit retention resulted in very low vigor. Under these conditions, while lint yield was extremely high for this region (1300-1600 lbs. lint per acre), no statistical differences were observed among treatments. Fiber quality measurements also revealed no significant differences.
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Oliver, J. F. "The effects of plant growth regulators and plant parasitic nematodes on cereal root growth." Thesis, University of Reading, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233539.

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Books on the topic "Plant regulators"

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A, Roberts J. Plant growth regulators. Glasgow: Blackie, 1988.

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Aftab, Tariq, and Khalid Rehman Hakeem, eds. Plant Growth Regulators. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61153-8.

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Roberts, Jeremy A., and Richard Hooley. Plant Growth Regulators. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4615-7592-4.

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W, Gausman H., ed. Plant biochemical regulators. New York: M. Dekker, 1991.

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Peter, Macgregor, Asian and Pacific Council. Food & Fertilizer Technology Center., and Nōyaku Kōgyōkai (Japan), eds. Plant growth regulators in agriculture. Taipei, Taiwan, Republic of China: Food and Fertilizer Technology Center for the Asian and Pacific Region, 1986.

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Roberts, Lorin Watson. Vascular differentiation and plant growth regulators. Berlin: Springer-Verlag, 1988.

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Conservation in Agricultural Education. Guidance Group. and Farming and Wildlife Advisory Group., eds. Plant growth regulators and desiccants. Sandy (Beds.): Conservation in Agricultural Education Guidance Group, 1987.

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M, Black, Pinfield N. J, and British Plant Growth Regulator Group., eds. Growth regulators and seeds: Proceedings of a meeting organized by the British Plant Growth Regulator Group on 29th May, 1987 at the SCI Lecture Theatre, Belgrave Square, London. London: British Plant Growth Regulator Group, 1987.

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Roberts, Lorin W., Peter B. Gahan, and Roni Aloni. Vascular Differentiation and Plant Growth Regulators. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73446-5.

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Konstantinovich, Sali͡a︡ev Ri͡u︡rik, Gamburg K. Z, Sibirskiĭ institut fiziologii i biokhimii rasteniĭ., and Konferent͡s︡ii͡a︡ "Fiziologo-biokhimicheskie osnovy primenenii͡a︡ reguli͡a︡torov rosta rasteniĭ v Sibiri" (1985 : Irkutsk, R.S.F.S.R.), eds. Fiziologo-biokhimicheskie osnovy primenenii͡a︡ reguli͡a︡torov rosta v Sibiri: Trudy konferent͡s︡ii, Irkutsk, fevralʹ 1985 g. Irkutsk: Akademii͡a︡ nauk SSSR, Sibirskoe otd-nie, Sibirskiĭ in-t fiziologii i biokhimii rasteniĭ, 1986.

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Book chapters on the topic "Plant regulators"

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Basuchaudhuri, P. "Plant Growth Regulators." In Physiology of Soybean Plant, 298–332. Boca Raton : CRC Press, [2020]: CRC Press, 2020. http://dx.doi.org/10.1201/9781003089124-11.

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Basuchaudhuri, P. "Plant Growth Regulators." In Physiology of the Peanut Plant, 322–50. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003262220-11.

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Babu, R. Sri Hari, V. Srilatha, and Veena Joshi. "Plant Growth Regulators." In Plant Growth Regulators in Tropical and Sub-tropical Fruit Crops, 1–13. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003300342-1.

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LOPEZ-LAURI, Félicie. "Plant Growth Regulators." In Postharvest Management Approaches for Maintaining Quality of Fresh Produce, 125–39. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-23582-0_8.

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Ram, Mauji. "Hormonal Regulation in Cell Culture of Artemisia annua L. Plant." In Plant Growth Regulators, 101–14. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61153-8_4.

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Singh, Khushwant, Ila Shukla, Ajay Kumar Tiwari, and Lubna Azmi. "Physiological, Biochemical, and Molecular Mechanism of Nitric Oxide-Mediated Abiotic Stress Tolerance." In Plant Growth Regulators, 217–38. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61153-8_11.

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Peerzada, Yasir Yousuf, and Muhammad Iqbal. "Leaf Senescence and Ethylene Signaling." In Plant Growth Regulators, 153–71. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61153-8_7.

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Sabagh, Ayman E. L., Akbar Hossain, Mohammad Sohidul Islam, Muhammad Aamir Iqbal, Khizer Amanet, Muhammad Mubeen, Wajid Nasim, et al. "Prospective Role of Plant Growth Regulators for Tolerance to Abiotic Stresses." In Plant Growth Regulators, 1–38. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61153-8_1.

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Yasir, Tauqeer Ahmad, and Allah Wasaya. "Brassinosteroids Signaling Pathways in Plant Defense and Adaptation to Stress." In Plant Growth Regulators, 197–206. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61153-8_9.

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Verma, Priyanka, Shamshad A. Khan, Aliya Juma Abdullah Alhandhali, and Varsha A. Parasharami. "Bioreactor Upscaling of Different Tissue of Medicinal Herbs for Extraction of Active Phytomolecules: A Step Towards Industrialization and Enhanced Production of Phytochemicals." In Plant Growth Regulators, 455–81. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61153-8_21.

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Conference papers on the topic "Plant regulators"

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Nasti, Ryan. "Rapid Gene Editing in Tomatoes Facilitated by Developmental Regulators." In ASPB PLANT BIOLOGY 2020. USA: ASPB, 2020. http://dx.doi.org/10.46678/pb.20.1052965.

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Alvarenga, Elson S., Francielly T. Souto, Vitor C. Baia, and Maria Regina A. Gomes. "Chromenediones as potential plant growth regulators." In 15th Brazilian Meeting on Organic Synthesis. São Paulo: Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_2013101144241.

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Huang, Weijie. "Identification and Characterization of Regulators of SNC2-Mediated Immunity in Arabidopsis." In ASPB PLANT BIOLOGY 2020. USA: ASPB, 2020. http://dx.doi.org/10.46678/pb.20.1053078.

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"The search of somatic embryogenesis regulators in Medicago truncatula." In Plant Genetics, Genomics, Bioinformatics, and Biotechnology. Novosibirsk ICG SB RAS 2021, 2021. http://dx.doi.org/10.18699/plantgen2021-208.

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Lifintseva, A., A. Yurkovskaya, A. Kalistratova, M. Oshchepkov, M. Ivanova, N. Bystrova, M. Akimov, K. Kochetkov, and L. Kovalenko. "NOVEL PLANT GROWTH REGULATORS FOR MEDICAL CHEMISTRY." In MedChem-Russia 2021. 5-я Российская конференция по медицинской химии с международным участием «МедХим-Россия 2021». Издательство Волгоградского государственного медицинского университета, 2021. http://dx.doi.org/10.19163/medchemrussia2021-2021-390.

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Coutts, Jordyn. "A vel approach to identify regulators of alternative splicing in flowering-time genes." In ASPB PLANT BIOLOGY 2020. USA: ASPB, 2020. http://dx.doi.org/10.46678/pb.20.1052987.

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Lisouskaya, Maryna, A. Mikhalchuk, Violetta Gonciaruk, Maria Popova, and Maria Popova. "Para-aminobenzoic acid derivatives as potentional plant growth regulators." In Scientific International Symposium “Advanced Biotechnologies - Achievements and Prospects” (VIth Edition). Institute of Genetics, Physiology and Plant Protection, Republic of Moldova, 2022. http://dx.doi.org/10.53040/abap6.2022.33.

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Caponetto, R., G. Dongola, and A. Gallo. "FPGA Implementation of Self-Tuning Regulators." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87351.

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The paper presents an hardware realization of a self-tuning control system implemented on a development board, Field Programmable Gate Arrays (FPGAs) based, able to adapt the control rules for an uncertain and disturbance affected plant. In the paper the on-line estimation of the plant parameters is realized by applying the “Recursive Least Squares with exponential forgetting” method and the control law is designed by using the “Pole Placement” procedure. These algorithms require a greater computational load, justifying therefore the FPGA utilization, especially in the case of high speed variation of the plant parameters. In order to test the FPGA hardware implementation of Self-Tuning regulators the process is implemented on DSPACE and the parameter variations are produced via an Human Machine Interface (HMI) console. Besides, thanks to the reprogrammability of FPGAs, these devices allow the use of such adaptive control systems in hazardous area.
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Muraviev, V. S., and L. V. Dyaduchenko. "THIENO[2,3-B]PYRIDINES DERIVATIVES AS SOYBEAN PLANT GROWTH REGULATORS." In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS Volume 2. DSTU-Print, 2020. http://dx.doi.org/10.23947/interagro.2020.2.683-686.

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We have carried out the synthesis and screening of soybean growth regulators in a series of substituted thieno[2,3-b]pyridines. The compounds, which have a high growth-regulating effect, were detected. According to the field tests, the substances have a positive effect in formation of the yield structure and provide seed quality.
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Li, Ming-Feng, Jian-Qiang Zhu, and Zhen-Hui Jiang. "Plant Growth Regulators and Nutrition Applied to Cotton after Waterlogging." In 2013 Third International Conference on Intelligent System Design and Engineering Applications (ISDEA). IEEE, 2013. http://dx.doi.org/10.1109/isdea.2012.246.

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Reports on the topic "Plant regulators"

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Lindow, Steven, Yedidya Gafni, Shulamit Manulis, and Isaac Barash. Role and In situ Regulation of Growth Regulators Produced in Plant-Microbe Interactions by Erwinia herbicola. United States Department of Agriculture, August 1992. http://dx.doi.org/10.32747/1992.7561059.bard.

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The main objective of this work was to gain a better understanding of how some strains of Erwinia herbicola have evolved into serious plant pathogens while also commonly existing as epiphytes on the surface of healthy plants. The focus of our studies was to determine the nature of, and regulation, of virulence factors, including the phytohormones IAA and cytokinins, which are encoded on a large plasmid (pPATH) found in gall-forming strains of this species. In addition, the in situ regulation and contribution to epiphytic fitness of a second, chromosomal, IAA biosynthetic locus (ipdC) was determined to ascertain the relative contribution of the two redundant IAA-biosynthetic pathways to the biology of E. herbicola. Genes (pre-etz and etz) conferring production of cytokinins were clustered immediately 3' of the iaaM and iaaH genes conferring IAA boisynthesis on pPATH. A new insertion-like element, IS1327, was also found immediately 3' of etz on pPATH, suggesting that these virulence factors were all introduced onto pPATH from another pathogenic bacterium. Mutants of E. herbicola in which etz, iaaH, and iaaM, but not ipdC, were disrupted caused smaller galls to form on gypsophila plants. In contrast, ipdC but not iaaH or iaaM mutants of E. herbicola exhibited reduced ability to grow and survive on plant surfaces. Transcription of ipdC was induced when cells were on plants compared to in culture, suggesting that idpC may play a selective role in fitness on leaves.
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Guney, Murat, Mozhgan Zarifikhosrohahi, Songul Comlekcioglu, Hakan Keles, Muhammet Ali Gundesli, Ebru Kafkas, and Sezai Ercisli. Efficiency of Various Plant Growth Regulators on Micropropagation of Hawthorn (Crataegus spp.). "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, January 2020. http://dx.doi.org/10.7546/crabs.2020.01.07.

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Christensen, Cynthia. The effect of plant growth regulators on the growth of Closterium moniliferum. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.5852.

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Eshed, Yuval, and Sarah Hake. Exploring General and Specific Regulators of Phase Transitions for Crop Improvement. United States Department of Agriculture, November 2012. http://dx.doi.org/10.32747/2012.7699851.bard.

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The transition of plants from a juvenile to adult growth phase entails a wide range of changes in growth habit, physiological competence and composition. Strikingly, most of these changes are coordinated by the expression of a single regulator, micro RNA 156 (miR156) that coordinately regulates a family of SBP genes containing a miR156 recognition site in the coding region or in their 3’ UTR. In the framework of this research, we have taken a broad taxonomic approach to examine the role of miR156 and other genetic regulators in phase change transition and its implication to plant development and crop improvement. We set to: Determine the common and unique factors that are altered upon juvenile to adult phase transition. Determine the functions of select miR156 target genes in tomato and maize, and identify those targets that mediate phase transition. Characterize the role of miR172 and its targets in tomato phase change. Determine the relationships between the various molecular circuits directing phase change. Determine the effects of regulated manipulation of phase change genes on plant architecture and if applicable, productivity. In the course of the study, a new technology for gene expression was introduced – next generation sequencing (NGS). Hence some of the original experiments that were planned with other platforms of RNA profiling, primarily Affymetrix arrays, were substituted with the new technology. Yet, not all were fully completed. Moreover, once the initial stage was completed, each group chose to focus its efforts on specific components of the phase change program. The Israeli group focused on the roles of the DELAYED SYMPODIAL TERMINATION and FALSIFLORA factors in tomato age dependent programs whereas the US group characterized in detail the role of miR156 (also termed Cg) in other grasses and in maize, its interplay with the many genes encoding miR172.
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Chamovitz, Daniel A., and Zhenbiao Yang. Chemical Genetics of the COP9 Signalosome: Identification of Novel Regulators of Plant Development. United States Department of Agriculture, January 2011. http://dx.doi.org/10.32747/2011.7699844.bard.

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This was an exploratory one-year study to identify chemical regulators of the COP9 signalosome. Chemical Genetics uses small molecules to modify or disrupt the function of specific genes/proteins. This is in contrast to classical genetics, in which mutations disrupt the function of genes. The underlying concept is that the functions of most proteins can be altered by the binding of a chemical, which can be found by screening large libraries for compounds that specifically affect a biological, molecular or biochemical process. In addition to screens for chemicals which inhibit specific biological processes, chemical genetics can also be employed to find inhibitors of specific protein-protein interactions. Small molecules altering protein-protein interactions are valuable tools in probing protein-protein interactions. In this project, we aimed to identify chemicals that disrupt the COP9 signalosome. The CSN is an evolutionarily conserved eight-subunit protein complex whose most studied role is regulation of E3 ubiquitinligase activity. Mutants in subunits of the CSN undergo photomorphogenesis in darkness and accumulate high levels of pigments in both dark- and light-grown seedlings, and are defective in a wide range of important developmental and environmental-response pathways. Our working hypothesis was that specific molecules will interact with the CSN7 protein such that binding to its various interacting proteins will be inhibited. Such a molecule would inhibit either CSN assembly, or binding of CSN-interacting proteins, and thus specifically inhibit CSN function. We used an advanced chemical genetic screen for small-molecule-inhibitors of CSN7 protein-protein interactions. In our pilot study, following the screening of ~1200 unique compounds, we isolated four chemicals which reproducibly interfere with CSN7 binding to either CSN8 or CSN6.
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Palazzo, Antonio J., Paul Zang, Robert W. Duell, Timothy J. Cary, and Susan E. Hardy. Plant Growth Regulators' Effect on Growth of Mixed Cool-Season Grass Stands at Fort Drum. Fort Belvoir, VA: Defense Technical Information Center, September 1996. http://dx.doi.org/10.21236/ada319796.

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Wetterling, Matthew. The influence of plant growth regulators on flowering, pod set, seed size, and seed yield in soybean. Ames (Iowa): Iowa State University, January 2019. http://dx.doi.org/10.31274/cc-20240624-1456.

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Eshed, Yuval, and John Bowman. Harnessing Fine Scale Tuning of Endogenous Plant Regulatory Processes for Manipulation of Organ Growth. United States Department of Agriculture, 2005. http://dx.doi.org/10.32747/2005.7696519.bard.

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Background and objectives: Manipulation of plant organ growth is one of the primary reasons for the success of mankind allowing increasing amounts of food for human and livestock consumption. In contrast with the successful selection for desirable growth characteristics using plant breeding, transgenic manipulations with single genes has met limited success. While breeding is based on accumulation of many small alterations of growth, usually arise from slight changes in expression patterns, transgenic manipulations are primarily based on drastic, non-specific up-regulation or knock down of genes that can exert different effects during different stages of development. To successfully harness transgenic manipulation to attain desirable plant growth traits we require the tools to subtly regulate the temporal and spatial activity of plant growth genes. Polar morphology along the adaxial/abaxial axis characterizes lateral organs of all plants. Juxtaposition of two cell types along this axis is a prerequisite of laminar growth induction. In the study summarized here, we addressed the following questions: Can we identify and harness components of the organ polarity establishment pathway for prolonged growth? Can we identify specific regulatory sequences allowing spatial and temporal manipulation in various stages of organ development? Can we identify genes associated with YABBY-induced growth alterations? Major conclusions and implications: We showed that regulated expression, both spatially and temporally of either organ polarity factors such as the YABBY genes, or the organ maturation program such as the CIN-TCPs can stimulate substantial growth of leaves and floral organs. Promoters for such fine manipulation could be identified by comparison of non-coding sequences of KAN1, where a highly conserved domain was found within the second intron, or by examination of multiple 5” regions of genes showing transient expression along leaf ontogeny. These promoters illustrate the context dependent action of any gene we examined thus far, and facilitate fine tuning of the complex growth process. Implications, both scientific and agricultural. The present study was carried out on the model organism Arabidopsis, and the broad application of its findings were tested in the tomato crop. We learned that all central regulators of organ polarity are functionally conserved, probably in all flowering plants. Thus, with minor modifications, the rules and mechanisms outlined in this work are likely to be general.
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Tucker, Mark L., Shimon Meir, Amnon Lers, Sonia Philosoph-Hadas, and Cai-Zhong Jiang. Elucidation of signaling pathways that regulate ethylene-induced leaf and flower abscission of agriculturally important plants. United States Department of Agriculture, January 2012. http://dx.doi.org/10.32747/2012.7597929.bard.

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The Problem: Abscission is a highly regulated process, occurring as a natural terminal stage of development, in which various organs are separated from the parent plant. In most plant species, the process is initiated by a decrease in active auxin in the abscission zone (AZ) and an increase in ethylene, and may be accelerated by postharvest or environmental stresses. Another potential key regulator in abscission is IDA (Inflorescence Deficient in Abscission), which was identified as an essential peptide signal for floral organ abscission in Arabidopsis. However, information is still lacking regarding the molecular mechanisms integrating all these regulators. In our previous BARD funded research we made substantial progress towards understanding these molecular events in tomato, and the study is still in progress. We established a powerful platform for analysis of genes for regulatory proteins expressed in AZ. We identified changes in gene expression for several transcription factors (TFs) directly linked to ethylene and auxin signaling and several additional regulatory proteins not so obviously linked to these hormones. Moreover, we demonstrated using a virus-induced gene silencing (VIGS) assay that several play a functional role in the onset of abscission. Based on these results we have selected 14 genes for further analysis in stably transformed tomato plants. All 14 genes were suppressed by RNA interference (RNAi) using a constitutive promoter, and 5 of them were also suppressed using an abscission-specific promoter. Transformations are currently at different stages of progress including some lines that already display an abscission phenotype. Objectives: We propose here to (1) complete the functional analysis of the stably transformed tomato plants with T2 lines and perform transcriptome analysis using custom abscission-specific microarrays; (2) conduct an indepth analysis of the role of IDA signaling in tomato leaf and flower abscission; (3) perform transcriptome and proteome analyses to extend the earlier gene expression studies to identify transcripts and proteins that are highly specific to the separation layer (i.e., target cells for cell separation) prior to the onset of abscission; (4) extend and compliment the work in tomato using a winnowed set of genes in soybean. Methodology: Next Generation Sequencing (NGS) of mRNA will be used to further increase the list of abscission-associated genes, and for preparation of a custom tomato abscission microarray to test altered gene expression in transgenic plants. Tandem mass spectrometry (LC-MS/MS) of protein extracts from leaf petiole, flower pedicel and their AZ tissues will be used to identify the proteome of the AZ before and during abscission. AZ-specific gene promoters will be used in stably transformed tomato plants to reduce non-target phenotypes. The bean pod mottle virus (BPMV) plasmid vectors will be used for VIGS analysis in soybean. Expected Contribution: Our study will provide new insights into the regulation of ethylene-induced abscission by further revealing the role of key regulators in the process. This will permit development of novel techniques for manipulating leaf and flower abscission, thereby improving the postharvest performance of agriculturally important crops.
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Moskova, Irina, Bistra Dikova, Elena Balacheva, and Iskren Sergiev. Protective Effect of Plant Growth Regulators MEIA and 4PU-30 against Tomato Spotted Wilt Virus (TSWV) on Two Tomato Geno types. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, November 2020. http://dx.doi.org/10.7546/crabs.2020.11.08.

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