phytohormone


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phytohormone

/phy·to·hor·mone/ (-hor´mōn) plant hormone; any of the hormones produced in plants; they are active in controlling growth and other functions at a site remote from their place of production.
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Phytohormones play an essential role in plant growth and development.
Taken together, we can conclude that phytohormones play a diverse role for organogenic responses on explants in vitro for this species.
The intensity of the color was read at 405nm using an ELISA plate reader and related to phytohormone concentrations by means of a standard curve.
It appears that a more general PGP effect, possibly one based on phytohormone production, may also be occurring.
Influence of phytohormone combinations on shoot rooting: To optimize phytohormone combinations for MS- based medium formulation, different synthetic plant auxins (IBA and NAA) were tested at various concentrations.
The medium without phytohormone was used as the control in this study.
This incorporation was carried out by reaction of o- phenylendiamine with the corresponding substituted phenoxymethyl acid which have attracted much attention in biochemistry, agriculture and pharmacology due to their antiviral, antimicrobial activities and phytohormone activities.
Phytohormone inactivation can occur through the combination of sugars derived from hydrolysis of sucrose, glucose and fructose, thereby altering the balance of active molecules of auxin and cytokinin (CORUZZI; ZHOU, 2001), directly affecting adventitious root formation in vegetative propagules (BHARDWAJ; MISHRA, 2005).
Higher auxin concentrations are required for AR during the induction phase, whereas during the formation phase the phytohormone becomes inhibitory; this profile has been observed in various plant species (De Klerk et al.
The method gives physiologists a rapid way to examine how plants use complex phytohormone interactions--called "signaling crosstalk"--to coordinate growth, development, and dynamic responses to stress.