SSD1 — Magnaporthe oryzae 70-15

Summary

MoSSD1 (MGG_08084) in Magnaporthe oryzae 70-15 encodes a cell wall biogenesis protein phosphatase Ssd1, which possesses RNA exonuclease, endonuclease, and 3'-5' exoribonuclease activities, along with mRNA 5'-UTR and 3'-UTR binding, poly(U) binding, and small GTPase binding functions. The gene is associated with nuclear and cytoplasmic exosome complexes, P bodies, stress granules, and the nucleolus. It is linked to numerous RNA metabolic processes, including nuclear mRNA surveillance, rRNA breakdown, non-stop decay, and regulation of G1/G0 transition. Phenotypic associations include decreased spore germination, altered cell cycle progression, increased polyploidy, reduced hypoosmotic stress resistance, and absent alkaline pH resistance. Related genes in other species are linked to virulence, loss of pathogenicity, and traits such as protein content and acid sensitivity.