What are the 4 functions of auxins?
Functions of auxin are:
- Promote cell elongation.
- Promote cell differentiation.
- Promote plant growth.
- Helps in fruit growth.
How do auxins work?
Auxins are a family of plant hormones. They are mostly made in the tips of the growing stems and roots, which are known as apical meristems, and can diffuse to other parts of the stems or roots. Auxins control the growth of plants by promoting cell division and causing elongation in plant cells (the cells get longer).
Is auxin a gibberellin?
Among the endogenous plant hormones, gibberellins (GAs) and auxin [indole-3-acetic acid (IAA)] mediate the shading adaptive responses of plants, especially for shade-induced differential growth and elongation (Kurepin et al., 2007a; de Lucas and Prat, 2014; Yang and Li, 2017).
What are the functions of auxins in plants?
Auxins also play a role in cell division and differentiation, in fruit development, in the formation of roots from cuttings, in the inhibition of lateral branching (apical dominance), and in leaf fall (abscission). The structures of plant hormones.
How are auxin molecules transported from cell to cell?
It is achieved through very complex and well-coordinated active transport of auxin molecules from cell to cell throughout the plant body — by the so-called polar auxin transport. Thus, a plant can (as a whole) react to external conditions and adjust to them, without requiring a nervous system.
How did the auxin hormone get its name?
Auxins, derive their name from the greek word auxano (to grow). They were the first of the major plant hormones to be discovered, have been demonstrated to be a basic coordinative signal of plant development.
What are the different types of auxin molecules?
An auxin may be one of many molecules, but all auxin molecules are involved in some sort of cellular regulation. Auxin molecules are one of five major types of plant hormone. The other major groups are the gibberellins, cytokinins, ethylene, and abscisic acid.
