Plant Growth Regulation
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In vitro binding of auxin to particulate fractions from the shoots of dark-grown wheat seedlings
Plant Growth Regulation - Tập 3 - Trang 15-26 - 1985
A binding site for auxins was found in the 50,000g pellet from a homogenate of shoots from dark-grown wheat seedlings. The optimum conditions for the binding of native auxin, IAA, were within the range of physiological conditions of growth (pH 5.2, temperature 20° C). The binding site displayed a high affinity to IAA (affinity constant about 107
M
−1, i.e. dissociation constant about 10−8
M) and l......
Role of agrochemical-based nanomaterials in plants: biotic and abiotic stress with germination improvement of seeds
Plant Growth Regulation - Tập 97 - Trang 375-418 - 2022
Nanotechnology has provided advancement opportunities in different fields of sciences related to plants such as agriculture. Plants are one of the most critical components of the ecosystem. Therefore, the perception of the behavior of plants in the presence of nanomaterials (NMs) plays an important role in achieving the goals of sustainable agriculture. NMs depending on physicochemical and structu......
Methylome and transcriptome analysis reveals candidate genes for tuber shape variation in tissue culture-derived potato
Plant Growth Regulation - Tập 93 - Trang 319-332 - 2021
We investigated genome-wide DNA methylation and transcriptome (RNA-seq) profiling for tuber shape variation in potato. Mother plant (M1, round) and tissue culture-derived clonal variant plant (M2, elongated) were used. Total number of DNA methylation sites at cytosine contexts (CpG, CHG and CHH) was higher in M2 than M1, where CHH was the highest followed by CHG and CpG. Differential methylation r......
Ammonium, calcium, and leaf senescence in rice
Plant Growth Regulation - Tập 26 - Trang 63-66 - 1998
The possible involvement of calcium in the regulation of ammonium-promoted senescence of detached rice leaves was investigated. Calcium effectively reduced ammonium-promoted senescence of detached rice leaves. The effect of ammonium on the senescence was also significantly reduced by the calcium ionophore A23187. Ammonium-promoted senescence of detached rice leaves may be mediated through blocking......
Differential inhibition of indole-3-acetic acid and tryptophan biosynthesis by indole analogues. I. Tryptophan dependent IAA biosynthesis
Plant Growth Regulation - Tập 27 - Trang 57-62 - 1999
Maize liquid endosperm extracts contain the enzymes necessary for all of the steps of the plant IAA biosynthetic pathway from tryptophan, and provide a means to assay the pathway in vitro. We have analyzed the reactions in the presence of a series of indole and indole-like analogues in order to evaluate the potential of these compounds to act as inhibitors of IAA biosynthesis. Such inhibitors will......
Gibberellins Increase Cuticle Deposition in Developing Tomato Fruit
Plant Growth Regulation - Tập 51 - Trang 1-10 - 2006
Effects of the gibberellins A4+7(GA4+7) and A3(GA3), benzyladenine (BA) and forchlorfenuron (CPPU) on deposition of the cuticular membrane (CM) in developing tomato (Lycopersicon esculentum L.) fruit were investigated. Growth regulators were applied when fruit development within trusses ranged from the flower to the mature stage. Developmental stage of fruit at the time of application was indexed ......
Global profiling of alternative splicing landscape responsive to salt stress in wheat (Triticum aestivum L.)
Plant Growth Regulation - Tập 92 - Trang 107-116 - 2020
Alternative splicing (AS) plays crucial roles during plant development especially in stress responses. Although many studies have been performed on AS, the function of which participating in abiotic stress responses is still not well known. To assess the interplay between AS and salt stress, genome-wide analyses of AS were performed. Totally, 11,141 genes were found exhibiting significant AS chang......
Influence of copper on hormone content and selected morphological, physiological and biochemical parameters of hydroponically grown Zea mays plants
Plant Growth Regulation - Tập 89 - Trang 191-201 - 2019
The impact of copper on hydroponically grown Zea mays L. has been characterized at the level of morphological changes and phytohormones. Maize plants were grown in Hoagland nutrient solution for 14 days with the addition of 50 µM or100 µM CuSO4. Both the height and the fresh weight of plants were reduced. The hormone analysis, performed by mass spectrometry, revealed elevation of abscisic acid (AB......
Chemical composition of pods and seeds of Dichrostachys cinerea as a basis of seed dispersal
Plant Growth Regulation - Tập 14 - Trang 273-277 - 1994
The occurrence of very few seeds of Dichrostachys cinerea in the soil seed bank prompted the present study as to why animal browsers and seed predators should select the infructescence of this plant. The preferential and extensive browsing of this indehiscent legume is apparently not due to any exceptional nutritive value of the pods and seeds. However, it is probably the strong rich aroma of the ......
Cytokinins in cut carnation flowers. IX. Transport and metabolism of iso-pentenyladenine and the effect of its derivatives on flower longevity
Plant Growth Regulation - Tập 9 - Trang 255-261 - 1990
Of the four 2iP derivatives applied to cut carnations 2iP, IPA and IPAMP delayed the rate of flower senescence but did not delay longevity. 2iP9G was the least effective. [3H]2iP was rapidly transported to all flower components. The receptacular tissue apparently plays a major role in the distribution of the applied cytokinin to the rest of the flower parts. Over and above possible interconversion......
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