Regulation of Shade Avoidance Under Low-Blue-Light by MTA in Soybean.

ABSTRACT: Under low blue light (LBL) conditions, soybean exhibits classic shade avoidance syndrome (SAS) with exaggerated stem elongation (ESE), leading to lodging and yield reduction in dense farming. Recently, mRNA modification by N6-methyladenosine (m6A) has emerged as a crucial epigenetic mechanism regulating plant biological processes; however, its impact on shade avoidance remains unexplored. In this study, the double mutants, gmmtas, that are impaired in two m⁶A writer genes, GmMTAa and GmMTAb that encode m⁶A methyltransferases or m⁶A writers are generated. It is found that the gmmtas mutants showed a substantial reduction of m6A levels, a dwarf phenotype, and a diminished sensitivity to LBL. Further investigation of the gmmtas mutants demonstrates that GmMTA

SUBMITTER: Zhang L 

PROVIDER: S-EPMC11791948 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature