Crosstalk in the responses to abiotic and biotic stresses in Arabidopsis: Analysis of gene expression in cytochrome P450 gene superfamily by cDNA microarray

Crosstalk in the responses to abiotic and biotic stresses in Arabidopsis: Analysis of gene... From Arabidopsis full-length cDNA libraries, we collected ca. 7000 (7K) independent full-length cDNAs to prepare a cDNA microarray. The 7K cDNA collection contains 49 cytochrome P450 genes. In this study, expression patterns of these cytochrome P450 genes were analyzed by a full-length cDNA microarray under various treatments, such as hormones (salicylic acid, jasmonic acid, ethylene, abscisic acid), pathogen-inoculation (Alternaria brassicicola, Alternaria alternata), paraquat, rose bengal, UV stress (UV-C), heavy metal stress (CuSO_4), mechanical wounding, drought, high salinity and low temperature. Expression of 29 cytochrome P450 genes among them was induced by various treatments. Inoculation with A. brassicicola and A. alternata as biotic stresses increased transcript levels of 12 and 5 genes in Arabidopsis plants, respectively. In addition, some of the genes were also expressed by abiotic stresses. This suggests crosstalk between abiotic and biotic stresses. The promoter sequences and cis-acting elements of each gene were studied on the basis of full-length cDNA sequences. Most cytochrome P450 genes induced by both abiotic and biotic stresses contained the recognition sites of MYB and MYC, ACGT-core sequence, TGA-box and W-box for WRKY transcription factors in their promoters. These cis-acting elements are known to participate in the regulation of plant defense. The response of each gene to multiple stresses is strictly regulated. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Crosstalk in the responses to abiotic and biotic stresses in Arabidopsis: Analysis of gene expression in cytochrome P450 gene superfamily by cDNA microarray

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2004 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1007/s11103-004-0685-1
Publisher site
See Article on Publisher Site

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