Reference : Changing concepts in plant hormone action
Scientific journals : Article
Life sciences : Anatomy (cytology, histology, embryology...) & physiology
Life sciences : Biochemistry, biophysics & molecular biology
Life sciences : Phytobiology (plant sciences, forestry, mycology...)
http://hdl.handle.net/2268/3088
Changing concepts in plant hormone action
English
Gaspar, Thomas mailto [> > Botanique, radiobotanique & serres expér. >]
Kevers, Claire mailto [Université de Liège - ULg > Département des sciences de la vie > Biologie moléculaire et biotechnologie végétales >]
Faivre-Rampant, Odile [Université de Liège - ULg > > Hormonologie Végétale > >]
Crèvecoeur, Michèle [Université de Genève - UNIGE > > Physiologie et Biochimie Végétales > >]
Penel, Claude [Université de Genève - UNIGE > > Physiologie et Biochimie Végétales > >]
Greppin, Hubert [Université de Genève - UNIGE > > Physiologie et Biochimie Végétales > >]
Dommes, Jacques mailto [Université de Liège - ULg > Département des sciences de la vie > Biologie moléculaire et biotechnologie végétales >]
2003
In Vitro Cellular & Developmental Biology-Plant
C A B I Publishing
39
2, MAR-APR
85-106
Yes (verified by ORBi)
International
1054-5476
Wallingford
[en] phytohormone concept ; plant growth substances or regulators ; new naturally occurring growth and developmental regulators ; hormonal balances and cross-talking ; sequential involvement of different hormones ; secondary messengers ; hormone sensitivity ; signal transduction and transport
[en] A plant hormone is not, in the classic animal sense, a chemical synthesized in one organ, transported to a second organ to exert a chemical action to control a physiological event. Any phytohormone can be synthesized everywhere and can influence different growth and development processes at different places. The concept of physiological activity under hormonal control cannot be dissociated from changes in concentrations at the site of action, from spatial differences and changes in the tissue's sensitivity to the compound, from its transport and its metabolism, from balances and interactions with the other phytohormones, or in their metabolic relationships, and in their signaling pathways as well. Secondary messengers are also involved. Hormonal involvement in physiological processes can appear through several distinct manifestations (as environmental sensors, homeostatic regulators and spatio-temporal synchronizers, resource allocators, biotime adjusters, etc.), dependent on or integrated with the primary biochemical pathways. The time has also passed for the hypothesized 'specific' developmental hormones, rhizocaline, caulocaline, and florigen: root, stem, and flower formation result from a sequential control of specific events at the right places through a coordinated control by electrical signals, the known phytohormones and nonspecific molecules of primary and secondary metabolism, and involve both cytoplasmic and apoplastic compartments. These contemporary views are examined in this review.
Researchers ; Professionals
http://hdl.handle.net/2268/3088

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