Photosynthetic genes are differentially transcribed during the dehydration-rehydration cycle in the resurrection plant, Xerophyta humilis

被引:48
作者
Collett, H [1 ]
Butowt, R [1 ]
Smith, J [1 ]
Farrant, J [1 ]
Illing, N [1 ]
机构
[1] Univ Cape Town, Dept Mol & Cell Biol, ZA-7701 Rondebosch, South Africa
基金
新加坡国家研究基金会;
关键词
dehydration-rehydration cycle; photosynthesis; photosystem II genes; resurrection plant; transcript;
D O I
10.1093/jxb/erg285
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
One of the desiccation-tolerant mechanisms of the resurrection plant, Xerophyta humilis, is the ability to shut down photosynthesis reversibly. The X. humilis psbR and ChlP genes, encoding the 10 kDa polypeptide of photosystem II (PSII) and a geranylgeranyl reducatase, respectively, were isolated in a differential display screen as dehydration-down-regulated and rehydration-up-regulated transcripts. Two other PSII genes, psbA (chloroplast-encoded) and psbP (nuclear-encoded), isolated by degenerate primer PCR, display a similar trend in expression.
引用
收藏
页码:2593 / 2595
页数:3
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