AN OXIDATION REDUCTION BUFFER FOR EVALUATING THE PHYSIOLOGICAL-RESPONSE OF PLANTS TO ROOT OXYGEN STRESS

被引：59
作者：
DELAUNE, RD
PEZESHKI, SR
PARDUE, JH
机构：
[1] Laboratory for Wetland Soils and Sediments, Center for Wetland Resources, Louisiana State University, Baton Rouge
来源：
ENVIRONMENTAL AND EXPERIMENTAL BOTANY | 1990年 / 30卷 / 02期
关键词：
D O I：
10.1016/0098-8472(90)90070-K
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Zea mays and Spartina patens were grown in nutrient solution containing either an oxidized (+4) or a reduced (+3) form of titanium citrate. Low oxidation-reduction conditions in the nutrient solution as a result of titanium (+3) citrate reduced photosynthetic activity of Zea mays. Photosynthetic activity of flood-tolerant S. patens was initially reduced by the addition of titanium (+3) citrate but subsequently increased, indicating the existence of adaptation mechanisms in S. patens. Titanium citrate was non-toxic since titanium (+4) citrate (oxidized form) added to rooting medium resulted in no reduction in photosynthetic activity of either species. Titanium (+3) citrate may be an excellent non-toxic oxidation-reduction buffering system for evaluating wetland plant response to root oxygen stress. © 1990.
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页码：243 / 247
页数：5
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