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Plant stress responses describe the suite of molecular and cellular processes that are triggered by the detection by the plant of some form of stress. Stresses can be abiotic, such as drought or excess light, or biotic, such as herbivores or pathogens.
Barnyardgrass is a problematic agricultural weed. Here, via genomic analysis, Guo et al. identify genes potentially underlying its success, including a gene cluster activated in response to co-cultivation with rice that leads to synthesis of the allelochemical DIMBOA.
Cold stress activates Arabidopsis thaliana plasma membrane-localized CRPK1, which leads to 14-3-3 proteins entering the nucleus and promoting the degradation of CBF transcription factors, thus attenuating the cold-induced response.
Resurrection plants can survive extreme drying during periods of prolonged drought stress, maintaining a quiescent state for months to years until the return of water. Analysis of the genome and transcriptome of the resurrection plant Xerophyta viscosa links the evolution of desiccation tolerance to rewired pre-existing seed pathways.