Switching of proline metabolism in water stressed plants
نویسندگان
چکیده
منابع مشابه
Internal Water Status of Kinetin-treated, Salt-stressed Plants.
Stomatal resistances and turgor pressures were measured during a 12-day period on leaves of bean (Phaseolus vulgaris L. cv. Contender) which were treated with kinetin, were salinized or were treated with kinetin and salinized. Stomatal resistances were highest in salt-stressed plants, and progressively lower in salt-stressed and kinetin-treated plants, control plants, and kinetin-treated plants...
متن کاملGrowth and proline content in NaCl stressed plants of annual medic species
Wild populations of Medicago ciliaris and Medicago polymorpha were subjected to four salt treatments 0, 50, 100 and 150 mM NaCl, plant growth and proline concentration in leaves were assessed. The analyzed data revealed significant variability in salt response within and between the two species, depending on the salinity level. It was found that high NaCl concentrations affected all the growth ...
متن کاملAbscisic Acid Metabolism in Water-stressed Bean Leaves.
Phaseic acid (PA) and dihydrophaseic acid (DPA) are the major metabolites observed when (S)-2-(14)C-abscisic acid (ABA) is fed to 14-day excised primary bean leaves (Phaseolus vulgaris L. cv. Red Kidney). The distribution of (14)C in leaves which were wilted after feeding ABA appears to be the same as that observed in unwilted leaves. A reduction in the relative specific radioactivities of the ...
متن کاملConnecting Proline and γ-Aminobutyric Acid in Stressed Plants through Non-Enzymatic Reactions
The accumulation of proline (Pro) in plants exposed to biotic/abiotic stress is a well-documented and conserved response in most vegetal species. Stress conditions induce the overproduction of reactive oxygen species which can lead to cellular damage. In vitro assays have shown that enzyme inactivation by hydroxyl radicals (·OH) can be avoided in presence of Pro, suggesting that this amino acid...
متن کاملDynamic proline metabolism: importance and regulation in water limited environments
Drought-induced proline accumulation observed in many plant species has led to the hypothesis that further increases in proline accumulation would promote drought tolerance. Here we discuss both previous and new data showing that proline metabolism and turnover, rather than just proline accumulation, functions to maintain growth during water limitation. Mutants of Δ (1)-Pyrroline-5-Carboxylate ...
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ژورنال
عنوان ژورنال: Bulletin de la Société Botanique de France. Actualités Botaniques
سال: 1990
ISSN: 0181-1789
DOI: 10.1080/01811789.1990.10826981