Plant hormone - Wikipedia
Plant hormones (or phytohormones) are signal molecules, produced within plants, that occur in extremely low concentrations. 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]
Plant Hormones - The Definitive Guide | Biology Dictionary
2020年1月28日 · Plant hormones are natural substances which control many aspects of plant development. They control everything from the length between nodes on the branches to the programmed death, or senescence seen in many annual plants.
Plant Hormones: Definition, Types, Function, Auxin - BYJU'S
Plant hormones are chemical compounds present in very low concentration in plants. They are derivatives of indole (auxins), terpenes (Gibberellins), adenine (Cytokinins), carotenoids (Abscisic acid) and gases (Ethylene).
4.2: Plant Hormones - Biology LibreTexts
2022年7月27日 · Understand the role of the five major hormone groups in plant growth and development. Recognize that cells, tissues, and organs have unique competency to respond to specific hormones. Connect specific hormones to plant responses and how they are used in …
Plant Hormones – Types, Functions & Uses - Science Facts
2023年2月2日 · Plant hormones or phytohormones are chemical compounds found in low quantities in plants and also in algae. They control their overall growth and development, reproductive processes, environmental responses, and even death. Thus, they are also called plant growth regulators (PGRs). Sometimes PGRs are also synthesized artificially.
11: Plant Hormones - Biology LibreTexts
2024年2月14日 · Plant hormones are a group of unrelated chemical substances that affect plant growth, development, and other physiological processes. Five major plant hormones are traditionally described: auxins (particularly IAA), cytokinins, gibberellins (GAs), abscisic acid (ABA), and ethylene.
Plant hormones are versatile chemical regulators of plant growth …
2009年4月17日 · Over the years, the pantheon of plant hormones has been growing and now includes (but is not limited to) abscisic acid (ABA), indole-3-acetic acid (IAA or auxin), brassinosteroids (BRs),...
Hormone - Plant Growth, Photosynthesis, Reproduction | Britannica
2024年10月17日 · Hormone - Plant Growth, Photosynthesis, Reproduction: Growth in plants is regulated by a variety of plant hormones, including auxins, gibberellins, cytokinins, and growth inhibitors, primarily abscisic acid and ethylene.
Hormonal Regulation of Plant Growth and Development - PMC
Plant growth and development involves the integration of many environmental and endogenous signals that, together with the intrinsic genetic program, determine plant form. Fundamental to this process are several growth regulators collectively called the plant hormones or phytohormones.
The Roles of Plant Hormones and Their Interactions with …
Two different classes of plant hormones, cytokinins and auxins, and their interaction are particularly important for controlling SAM and FM development. This review focuses on the current issues surrounding the crosstalk between the hormonal and genetic regulatory network during meristem self-renewal and organogenesis.