ChIP-seq reveals broad roles of SARD1 and CBP60g in regulating plant immunity

Tongjun Sun, Yaxi Zhang, Yan Li, Qian Zhang, Yuli Ding and Yuelin Zhang ()
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Tongjun Sun: University of British Columbia
Yaxi Zhang: National Institute of Biological Sciences
Yan Li: National Institute of Biological Sciences
Qian Zhang: University of British Columbia
Yuli Ding: University of British Columbia
Yuelin Zhang: University of British Columbia

Nature Communications, 2015, vol. 6, issue 1, 1-12

Abstract: Abstract Recognition of pathogens by host plants leads to rapid transcriptional reprogramming and activation of defence responses. The expression of many defence regulators is induced in this process, but the mechanisms of how they are controlled transcriptionally are largely unknown. Here we use chromatin immunoprecipitation sequencing to show that the transcription factors SARD1 and CBP60g bind to the promoter regions of a large number of genes encoding key regulators of plant immunity. Among them are positive regulators of systemic immunity and signalling components for effector-triggered immunity and PAMP-triggered immunity, which is consistent with the critical roles of SARD1 and CBP60g in these processes. In addition, SARD1 and CBP60g target a number of genes encoding negative regulators of plant immunity, suggesting that they are also involved in negative feedback regulation of defence responses. Based on these findings we propose that SARD1 and CBP60g function as master regulators of plant immune responses.

Date: 2015
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DOI: 10.1038/ncomms10159

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