Moreover, these microorganisms act as plant growth regulator by producing amino acids, vitamin, and plant hormones
such as auxine and giberelic acid, as seen in the enhancement of seedling germination, stand health, plant vigor, plant height, shoot weight, nutrient content of shoot tissues, early bloom, chlorophyll content, and increased nodulation in legumes (Ponmurugan and Gopi 2006; Saharan and Nehra 2011).
: biosynthesis, signal transduction, action!
Auxin is the first plant hormone
studied and it has been correlated with several developmental processes like root initiation, apical dominance, plant growth, geotropism and phototropism and fruit development (Paciorek & Friml, 2006).
Obviously a plant hormone
with so many different functions (only a few have been described here) must influence regulation of several different systems.
Darwin is considered the scientist responsible for initiating modern plant hormone
The long term goal of this project is to understand the molecular/genetic mechanism by which the plant hormone
auxin (indole acetic acid) directs development in plants.
The eggplants are made by introducing a gene that increases the level of the plant hormone
indole acetic acid (IAA).
This plant hormone
slows things down considerably and doesn't harm the plant if used correctly.
At lower temperatures, flowers produce less ethylene, a gaseous plant hormone
that speeds senescence.
Evans, who still works in the division as an honorary research fellow, was able to induce early flowering in Lolium by treating its shoots with a the plant hormone
, gibberellic acid, in winter, when daylength is normally too short to initiate flowering.
For instance, a naturally occurring plant hormone
Gibberellic acid underpins cell growth found in plant tissues such as young leaves, shoots and flowers.
ABA: ABA is an ubiquitous plant hormone
as the signal molecule to respond environmental stresses, including salt stress, pathogen invasion, and drought stress, as well as plant development processes (Stec et al., 2016).