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	Water availability affects photosynthetic gene expression in the desert plant Ammopiptanthus mongolicus
	Zhang, LX; Li, WR; Bi, YR; Guo, JK; Wen, JQ; Feng, JC
刊名	ISRAEL JOURNAL OF PLANT SCIENCES
	2002
卷号	50期号:4页码:243-250
ISSN号	0792-9978
通讯作者	Zhang, LX()
英文摘要	Two habitats of Ammopiptanthus mongolicus growing in the desert regions of Northwest China, one with watering (IR) and one without watering (DR), were investigated simultaneously for gas exchange patterns and the expression of photosynthetic genes. Stomatal conductance (g(s)) and intracellular CO2 concentration (c(i)) were markedly lower in A. mongolicus in the natural desert habitat (DR) compared to IR, paralleling a similar depression observed in the net photosynthetic CO2 assimilation rate (P-n). The steady-state levels of photosystem, II (PS II) reaction center protein D1, light-harvesting complex II (LHCII), photosystem I (PS I) reaction center protein PsaA/B, and light-harvesting complex I (LHC I) were reduced in DR compared to IR. Our results indicate that both stomatal and nonstomatal factors contribute to the low carbon assimilation rate in, DR. Moreover, the contents of PsaA/B and LHC I are more reduced than those of D I and LHC II, indicating that PS I is more susceptible to photoinhibition under natural desert environment stresses. The cab transcripts for nuclear-encoded LHC II were decreased in DR compared with those in IR, while the psbA transcripts for chloroplast-encoded D1 protein remain largely unchanged between DR and IR. These results indicate that the nuclear-encoded photosynthetic gene is regulated, at least at the transcriptional level, and that the chloroplast-encoded gene is regulated mainly posttranscriptionally.
收录类别	SCI
WOS关键词	LIGHT-HARVESTING COMPLEX ; CUCUMIS-SATIVUS L ; PHOTOSYSTEM-II ; ZEA-MAYS ; MOLECULAR RESPONSES ; PROTEIN-METABOLISM ; LOW-TEMPERATURES ; DROUGHT STRESS ; MESSENGER-RNA ; D1 PROTEIN
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
语种	英语
出版者	LASER PAGES PUBL LTD
WOS记录号	WOS:000180277000001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556798
专题	寒区旱区环境与工程研究所
通讯作者	Zhang, LX
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Sch Life Sci, Lanzhou 730000, Peoples R China 3.Cent Univ Nationality, Dept Biol & Chem, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhang, LX,Li, WR,Bi, YR,et al. Water availability affects photosynthetic gene expression in the desert plant Ammopiptanthus mongolicus[J]. ISRAEL JOURNAL OF PLANT SCIENCES,2002,50(4):243-250.
APA	Zhang, LX,Li, WR,Bi, YR,Guo, JK,Wen, JQ,&Feng, JC.(2002).Water availability affects photosynthetic gene expression in the desert plant Ammopiptanthus mongolicus.ISRAEL JOURNAL OF PLANT SCIENCES,50(4),243-250.
MLA	Zhang, LX,et al."Water availability affects photosynthetic gene expression in the desert plant Ammopiptanthus mongolicus".ISRAEL JOURNAL OF PLANT SCIENCES 50.4(2002):243-250.

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