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Plant hormones control all aspects of plant growth and development, including embryogenesis, [1] the regulation of organ size, pathogen defense, [2] [3] stress tolerance [4] [5] and reproductive development. [6] Unlike in animals (in which hormone production is restricted to specialized glands) each plant cell is capable of producing hormones.
Download QR code; Print/export Download as PDF; Printable version; In other projects Wikimedia Commons; ... Growth hormone; Growth hormone–releasing hormone; H.
While cytokinin action in vascular plants is described as pleiotropic, this class of plant hormones specifically induces the transition from apical growth to growth via a three-faced apical cell in moss protonema. This bud induction can be pinpointed to differentiation of a specific single cell, and thus is a very specific effect of cytokinin. [18]
The function of CPS and KS in plants is performed by a single enzyme in fungi (CPS/KS). [21] [22] [23] In plants the Gibberellin biosynthesis genes are found randomly on multiple chromosomes, but in fungi are found on one chromosome . [24] [25] Plants produce low amount of Gibberellic Acid, therefore is produced for industrial purposes by ...
Category: Plant hormones. ... Download QR code; Print/export Download as PDF; Printable version; In other projects Wikimedia Commons; Wikidata item; Appearance.
The Dutch biologist Frits Warmolt Went first described auxins and their role in plant growth in the 1920s. [4] Kenneth V. Thimann became the first to isolate one of these phytohormones and to determine its chemical structure as indole-3-acetic acid (IAA). Went and Thimann co-authored a book on plant hormones, Phytohormones, in 1937.
The role of strigolactones as branching inhibitor hormone was discovered because of the use of a new set of mutant plants. [5] These mutants presented excessive growth in the axillary buds, which induced their terminal stem to start branching abnormally. [5]
Plant hormones, which are secondary metabolites, are often used to regulate the metabolic activity within cells and oversee the overall development of the plant. As mentioned above in the History tab, secondary plant metabolites help the plant maintain an intricate balance with the environment, often adapting to match the environmental needs.