PIF7-mediated epigenetic reprogramming promotes the transcriptional response to shade in Arabidopsis

ABSTRACT: For shade-intolerant plants, changes in light quality through competition from neighbours trigger shade avoidance syndrome (SAS): a series of morphological and physiological adaptations that are ultimately detrimental to plant health and crop yield. PYHTOCHROME-INTERACTING FACTOR 7 (PIF7) is a major transcriptional regulator of SAS in Arabidopsis; however how it regulates gene expression is not fully understood. Here, we show that PIF7 directly interacts with the histone chaperone ANTI-SILENCING FACTOR 1 (ASF1). The ASF1-deprived asf1ab mutant showed defective shade-induced hypocotyl elongation. HISTONE REGULATOR HOMOLOG A (HIRA), which mediates deposition of the H3.3 variant into chromatin, is also involved in SAS. RNA/ChIP-sequencing analyses identified the role of ASF1 in direct regulat

SUBMITTER: Prof. Lin Li 

PROVIDER: S-SCDT-10_15252-EMBJ_2022111472 | biostudies-other |

REPOSITORIES: biostudies-other