Water-Deficit Tolerance and Field Performance of Transgenic Alfalfa Overexpressing Superoxide Dismutase

Transgenic alfalfa (Medicago sativa) expressing Mn-superoxide dismutase cDNA tended to have reduced injury from water-deficit stress as determined by chlorophyll fluorescence, electrolyte leakage, and regrowth from crowns. A 3-year field trial indicated that yield and survival of transgenic plants w...

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Veröffentlicht in:	Plant physiology (Bethesda) 1996-08, Vol.111 (4), p.1177-1181
Hauptverfasser:	Bryan D. Mc Kersie, Stephen R. Bowley, Erni Harjanto, Leprince, Olivier
Format:	Artikel
Sprache:	eng
Schlagworte:	Adaptation to environment and cultivation conditions Agricultural sciences Agronomy. Soil science and plant productions Alfalfa Biological and medical sciences Dehydration Development Biology Fluorescence Free radicals Freezing Fundamental and applied biological sciences. Psychology Genetics and breeding of economic plants Leaves Life Sciences Oxidative stress Plant physiology and development Plants Sciences and technics of agriculture Superoxides Transgenic plants Varietal selection. Specialized plant breeding, plant breeding aims Vegetal Biology Water and solutes. Absorption, translocation and permeability Whole Plant, Environmental, and Stress Physiology
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Beschreibung
Zusammenfassung:	Transgenic alfalfa (Medicago sativa) expressing Mn-superoxide dismutase cDNA tended to have reduced injury from water-deficit stress as determined by chlorophyll fluorescence, electrolyte leakage, and regrowth from crowns. A 3-year field trial indicated that yield and survival of transgenic plants were significantly improved, supporting the hypothesis that tolerance of oxidative stress is important in adaptation to field environments.
ISSN:	0032-0889 1532-2548
DOI:	10.1104/pp.111.4.1177