期刊
PHOTOSYNTHESIS RESEARCH
卷 107, 期 3, 页码 247-256出版社
SPRINGER
DOI: 10.1007/s11120-011-9628-2
关键词
Iron deficiency; Electron transport; Photosystem II; Oxygen evolution; Fluorescence; Lactuca sativa
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
The effect of iron deficiency on photosynthetic electron transport in Photosystem II (PS II) was studied in leaves and thylakoid membranes of lettuce (Lactuca sativa, Romaine variety) plants. PS II electron transport was characterized by oxygen evolution and chlorophyll fluorescence parameters. Iron deficiency in the culture medium was shown to affect water oxidation and the advancement of the S-states. A decrease of maximal quantum yield of PS II and an increase of fluorescence intensity at step J and I of OJIP kinetics were also observed. Thermoluminescence measurements revealed that charge recombination between the quinone acceptor of PS II, Q(B), and the S-2 state of the Mn-cluster was strongly perturbed. Also the dark decay of Chl fluorescence after a single turnover white flash was greatly retarded indicating a slower rate of Q(A) (-) reoxidation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据