Comparative transcriptome analysis of arsenate and arsenite stresses in rice seedlings

被引：195

作者：

Chakrabarty, Debasis ^{[1
]}

Trivedi, Prabodh Kumar ^{[1
]}

Misra, Prashant ^{[1
]}

Tiwari, Manish ^{[1
]}

Shri, Manju ^{[1
]}

Shukla, Devesh ^{[1
]}

Kumar, Smita ^{[1
]}

Rai, Arti ^{[1
]}

Pandey, Ashutosh ^{[1
]}

Nigam, Deepti ^{[1
]}

Tripathi, Rudra Dev ^{[1
]}

Tuli, Rakesh ^{[1
]}

机构：

[1] Natl Bot Res Inst, Lucknow 226001, Uttar Pradesh, India

来源：

CHEMOSPHERE | 2009年 / 74卷 / 05期

关键词：

Arsenic; Genome-wide expression; Glutathione metabolism; Microarray; Oryza sativa; Metabolic network; TOLERANCE; GENE; TRANSPORT; GROWTH; PLANTS; DETOXIFICATION; ACCUMULATION; GERMINATION; METABOLISM; TOXICITY;

D O I：

10.1016/j.chemosphere.2008.09.082

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of arsenic (As) exposure on genome-wide expression was examined in rice (Oryza saliva L., ssp. Indica). A group of defense and stress-responsive genes, transporters, heat-shock proteins, metallothioneins, sulfate-metabolizing proteins, and regulatory genes showed differential expression in rice seedlings challenged with arsenate (AsV) and arsenite (AsIII). AsV stress led to upregulation or downregulation of an additional set of genes in comparison to AsIII. Differential expression of several genes that showed the highest contrast in a microarray analysis was validated by following the quantitative changes in the levels of individual transcripts following challenge with AsV, AsIII, Cd, Cr, and Pb. Most of the selected genes responded to challenge by heavy metals such as arsenic. However, expression of one of the cytochrome P450 genes (Os01g43740) in rice root was induced by AsV but not by other heavy metals. Similarly, one glutaredoxin (Os01g26912) is expressed specifically in the Asill-treated shoot. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：688 / 702

页数：15

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