Plant cell death articles from across Nature Portfolio

In angiosperms, petal abscission is crucial for reproductive success and seed dispersion. However, the regulation of this abscission remains unclear. Here, the authors identify a process of petal abscission regulated by jasmonic acid via autophagy at the base of Arabidopsis petals.

γ-H2A.X is a critical signal for DNA double strand break responses. In this study, an Arabidopsis protein that interacts with γ-H2A.X and the recombinase RAD51 is shown to contribute to plant chromatin stability and integrity.