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IAA

IAA

1 8.7
A plant hormone that makes stems and roots grow longer
  • noun
  • Specialized
: IAA
  • In addition, MeJA increased the level of free IAA in leaves, suggesting that MeJA increased the contents of free IAA by regulating AO activities.
  • free IAA
  • IAA level

Examples

  • Accordingly, it is important to further study whether the IAA produced by MeJA only plays a role in stress-related responses or acts as a general regulator of plant development.

    Academic text (2015)
  • The observed increase in the activities of AO and free IAA contents by MeJA suggests that AO may play a role in auxin biosynthesis and that MeJA is one of the positive regulators of AO.

    Academic text (2015)
  • IAA is a key plant hormone that promotes IAA elongation and root growth.

  • Researchers found that higher levels of IAA can lead to increased plant height and vigor.

  • The application of IAA helped the plant roots to grow deeper and healthier.

Synonyms

auxin
vsIAA
  • Specialized
1 9.3

A plant chemical that makes cells grow and forms roots and buds

is the specific abbreviation for one hormone inside that group
indoleacetic acid
vsIAA
  • Specialized
7.4

A chemical in plants that helps stems and roots grow longer

is an abbreviation used for that exact plant hormone

Surface Forms

IAA singular
IAAs plural

Etymology

IAA stands for indole-3-acetic acid, a plant hormone that helps stems and roots grow. The name shows its parts: acetic is the same root seen in 'vinegar', so it tells you this is an 'acid', and indole names a part of the molecule, so IAA is just a short way to refer to that growth-making acid.