Indoleacetic acid meaning

Indoleacetic acid is a type of phytohormone found in plants with the ability to promote growth and development.


Indoleacetic acid definitions

Word backwards citecaelodni dica
Part of speech The part of speech of the word "indoleacetic acid" is a noun.
Syllabic division in-do-le-ac-et-ic ac-id
Plural The plural form of indoleacetic acid is indoleacetic acids.
Total letters 16
Vogais (4) i,o,e,a
Consonants (5) n,d,l,c,t

Indoleacetic acid, also known as IAA, is a type of auxin plant hormone that plays a crucial role in regulating various growth and developmental processes in plants. It is produced in the meristematic regions of plants, such as the apical buds and root tips, and is involved in cell elongation, cell division, and tropic responses.

Role in Plant Growth

Indoleacetic acid is essential for regulating processes such as phototropism, geotropism, and gravitropism in plants. It promotes cell elongation by increasing the plasticity of the cell wall, allowing for the expansion of cells. This hormone also plays a role in the formation of roots and the initiation of lateral root growth.

Synthesis and Transport

Indoleacetic acid is primarily synthesized in the tips of plant shoots and roots. It is then transported throughout the plant via the phloem and xylem. The concentration of IAA in different parts of the plant is tightly controlled to ensure proper growth and development.

Role in Agriculture

IAA is often used in agriculture to promote root formation in cuttings and to increase fruit set in certain crops. It can also be used to prevent premature fruit drop and to enhance the growth of plant tissues in tissue culture.

In conclusion, indoleacetic acid is a key plant hormone that regulates various aspects of plant growth and development. Its role in cell elongation, root formation, and tropic responses makes it essential for the healthy growth of plants. Understanding the function of IAA can help improve agricultural practices and contribute to the development of more resilient crops.


Indoleacetic acid Examples

  1. Indoleacetic acid is a plant hormone that promotes growth and development.
  2. Researchers studied the effects of indoleacetic acid on root elongation in plants.
  3. Indoleacetic acid is commonly used in tissue culture to stimulate root formation.
  4. The concentration of indoleacetic acid can affect the branching pattern of plants.
  5. Indoleacetic acid is synthesized in plant tissues and plays a role in phototropism.
  6. Farmers may apply indoleacetic acid to crops to increase fruit set and yield.
  7. Scientists have discovered new pathways for the biosynthesis of indoleacetic acid.
  8. Indoleacetic acid mediates the bending of plant shoots towards light sources.
  9. The presence of indoleacetic acid influences the growth of adventitious roots in plants.
  10. Researchers have investigated the role of indoleacetic acid in plant defense mechanisms.


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  • Updated 06/04/2024 - 18:32:19