The Physiological Role of Arabidopsis Thylakoid Phosphate Transporter PHT4;1
The aim of this study was to investigate the physiological role of the thylakoid phosphate transporter PHT4;1 in Arabidopsis thaliana through the analysis of a pht4;1 loss-of-function mutant. Growth of the mutant was reduced in terms of rosette area and biomass to 80％ of wild type (WT) values. Analysis of kinetics for slow induction of of chlorophyll fluorescence revealed a transiently higher non-photochemical quenching in the mutant leaves as compared to the WT. On the other hand, relative electron transport rates were as much as 25％ lower in the mutant than in WT leaves. These results underscore the fundamental importance of thylakoid phosphate homeostasis for plant growth and modulation of stress responses.
Arabidopsis thaliana Non-photochemical quenching Phosphate transporter Photoprotection Thylakoid membrane
Patrik M Karlsson Sonia Irigoyen Wayne K Versaw Cornelia Spetea
Department of Physics, Chemistry and Biology, Linkoping University, Linkoping, Sweden Department of Biology, Interdepartmental Program in Molecular and Environmental Plant Sciences, Texa
国际会议
15th International Conference on Photosynthesis(第15届国际光合作用大会)
北京
英文
590-592
2010-08-22（万方平台首次上网日期，不代表论文的发表时间）