Epigenetic processes in plant stress priming: Open questions and new approaches

作者：C. Jake Harris, Anna Amtmann, Jurriaan Ton · 发表于：Current Opinion in Plant Biology · 年份：2023 · DOI：10.1016/j.pbi.2023.102432 · 被引用次数：120 · 研究领域：Plant Molecular Biology Research、Plant tissue culture and regeneration、Plant Reproductive Biology

Priming reflects the capacity of plants to memorise environmental stress experience and improve their response to recurring stress. Epigenetic modifications in DNA and associated histone proteins may carry short-term and long-term memory in the same plant or mediate transgenerational effects, but the evidence is still largely circumstantial. New experimental tools now enable scientists to perform targeted manipulations that either prevent or generate a particular epigenetic modification in a particular location of the genome. Such 'reverse epigenetics' approaches allow for the interrogation of causality between individual priming-induced modifications and their role for altering gene expression and plant performance under recurring stress. Furthermore, combining site-directed epigenetic manipulation with conditional and cell-type specific promoters creates novel opportunities to test and engineer spatiotemporal patterns of priming.