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To Stimulate or Inhibit? That Is the Question for the Function of Abscisic Acid
JF. Humplík, V. Bergougnoux, E. Van Volkenburgh,
Jazyk angličtina Země Velká Británie
Typ dokumentu časopisecké články, přehledy
- MeSH
- kyselina abscisová metabolismus MeSH
- regulátory růstu rostlin metabolismus MeSH
- semenáček růst a vývoj fyziologie MeSH
- vývoj rostlin * MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
Physiologically, abscisic acid (ABA) is believed to be a general inhibitor of plant growth, including during the crucial early development of seedlings. However, this view contradicts many reports of stimulatory effects of ABA that, so far, have not been considered in the debate concerning ABA's function in plant development. To address this apparent contradiction, we propose a hypothetical mechanism to explain how ABA might contribute to the promotion of cell expansion. We wish to overturn conventional views on ABA's role during juvenile plant development and put forward the idea that, as for other phytohormones, the role of ABA is determined by dose and sensitivity and ranges from stimulatory to inhibitory effects.
Citace poskytuje Crossref.org
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- $a Humplík, Jan F $u Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany Czech Academy of Sciences and Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic; These authors contributed equally to the work. Electronic address: humplik@ueb.cas.cz.
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- $a Physiologically, abscisic acid (ABA) is believed to be a general inhibitor of plant growth, including during the crucial early development of seedlings. However, this view contradicts many reports of stimulatory effects of ABA that, so far, have not been considered in the debate concerning ABA's function in plant development. To address this apparent contradiction, we propose a hypothetical mechanism to explain how ABA might contribute to the promotion of cell expansion. We wish to overturn conventional views on ABA's role during juvenile plant development and put forward the idea that, as for other phytohormones, the role of ABA is determined by dose and sensitivity and ranges from stimulatory to inhibitory effects.
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- $a Bergougnoux, Véronique $u Department of Molecular Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic; These authors contributed equally to the work.
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- $a Van Volkenburgh, Elizabeth $u Department of Biology, University of Washington, Seattle, WA, USA.
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