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Position: Home > Articles > Identification of differentially-expressed genes of rice in overlapping responses to bacterial infection by Xanthomonas oryzae pv. oryzae and nitrogen deficiency Journal of Integrative Agriculture 2015,14 (5)

Identification of differentially-expressed genes of rice in overlapping responses to bacterial infection by Xanthomonas oryzae pv. oryzae and nitrogen deficiency

作者：

Yu Chao;Chen Hua-min;Tian Fang;Bi Yong-Mei;Steven, Rothstein J.;Jan, Leach E.;He Chen-Yang

单位：

Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China;Colorado State Univ, Dept Bioagr Sci & Pest Management, Ft Collins, CO 80523 USA;Univ Guelph, Coll Biol Sci, Dept Mol & Cellular Biol, Guelph, ON N1G 2W1, Canada

关键词：

rice;differentially-expressed genes (DEGs);bacterial infection;nitrogen deficiency;co-regulation

摘要：

Bacterial blight of rice caused by Xanthomonas oryzae pv. oryzae (Xoo) is one of high nitrogen (N) responsive diseases. Rice plants became more disease resistant with decreasing N suggesting that the crosstalk between disease resistance and N utilization pathways might exist. However, the co-regulatory components in such crosstalk have not been elucidated. Here, we comparatively analyzed the gene expression profiling of rice under Xoo inoculation, low N treatment, or a combination of both stresses, and identified the differentially-expressed genes (DEGs) in overlapping responses. These DEGs were involved in different biological processes, including innate immunity and nitrogen metabolism. The randomly-selected DEGs expression was validated by quantitative real-time PCR assays. Temporal expression of six genes from different functional categories suggested that N condition was the dominant factor when both stresses were present. These DEGs identified provide novel insights into the coordinated regulatory mechanism in biotic and abiotic stress responses in rice.

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Identification of differentially-expressed genes of rice in overlapping responses to bacterial infection by Xanthomonas oryzae pv. oryzae and nitrogen deficiency

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