期刊
PLANT JOURNAL
卷 98, 期 1, 页码 126-141出版社
WILEY
DOI: 10.1111/tpj.14205
关键词
transcriptomics; reactive oxygen species (ROS) wave; systemic signaling; systemic acquired acclimation (SAA); MYB30; WRKY; light stress; H2O2 signaling; Arabidopsis thaliana
资金
- National Science Foundation [IOS-1353886, IOS-1063287, MCB-1613462]
- University of Missouri, College of Agriculture, Food and Natural Resources
- University of North Texas, College of Science
Systemic acquired acclimation (SAA) plays a key role in optimizing growth and preventing damage associated with fluctuating or abrupt changes in the plant environment. To be effective, SAA has to occur at a rapid rate and depend on rapid signaling pathways that transmit signals from affected tissues to all parts of the plant. Although recent studies have identified several different rapid systemic signaling pathways that could mediate SAA, very little information is known about the extent of their involvement in mediating transcriptomic responses. Here we reveal that the systemic transcriptomic response of plants to excess light stress is extensive in its context and involves an early (2 min) and transient stage of transcript expression that includes thousands of genes. This early response is dependent on the respiratory burst oxidase homolog D protein, and the function of the reactive oxygen species (ROS) wave. We further identify a core set of transcripts associated with the ROS wave and suggest that some of these transcripts are involved in linking ROS with calcium signaling. Priming of a systemic leaf to become acclimated to a particular stress during SAA involves thousands of transcripts that display a rapid and transient expression pattern driven by the ROS wave.
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