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Phytohormones

phytohormone --> plant growth substances

(Science: plant biology) substances that, at low concentration, influence plant growth and differentiation. Formerly referred to as plant hormones or phytohormones, these terms are now suspect because some aspects of the hormone concept, notably action at a distance from the site of synthesis, do not necessarily apply in plants. Also called plant growth regulators.

The major classes are absicisic acid, auxin, cytokinin, ethylene and gibberellin, others include steroid and phenol derivatives.


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how do halophytes tolerate salty environments?

... driving forces for water transport in intact higher plants: effects of transpiration and salinity; U. Zimmermann, et al. 13. Salinity, growth and phytohormones; R. Munns. 14. The adaptive potential of plant development: evidence from the response to salinity; G.N. Amzallag. D: Photosynthesis. ...

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by Linn
Wed Nov 22, 2006 11:47 pm
 
Forum: Botany Discussion
Topic: how do halophytes tolerate salty environments?
Replies: 4
Views: 1308

things present in cells

... particularly high respiration, carbon dioxide evolves and it causes closure of stomata), pH (that mostly refers to the CO2 - acidic) and some phytohormones (for example ABA)

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by waterboy
Sat May 06, 2006 7:05 pm
 
Forum: Botany Discussion
Topic: things present in cells
Replies: 9
Views: 1669

things present in cells

... particularly high respiration, carbon dioxide evolves and it causes closure of stomata), pH (that mostly refers to the CO2 - acidic) and some phytohormones (for example ABA)

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by SU_reptile
Mon May 01, 2006 7:18 pm
 
Forum: Botany Discussion
Topic: things present in cells
Replies: 9
Views: 1669

phytohormones

What are the basic function of the phytohormones auxin and gibberellin.? shal;l be glad to receive them in details with links.

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by kiran
Sat Feb 11, 2006 11:11 am
 
Forum: Botany Discussion
Topic: phytohormones
Replies: 2
Views: 944

Gibberellins and deforesation

... to the botany discussion where it belongs: http://www.biology-online.org/biology-forum/about3648.html Yes, trees do have hormones, they are called phytohormones. Check the link for details.

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by MrMistery
Mon Dec 12, 2005 6:57 pm
 
Forum: General Discussion
Topic: Gibberellins and deforesation
Replies: 3
Views: 1463
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