MS188 — Lactuca sativa

Summary

LsMS188, also known as MYB103, MYB80, or MS188, encodes a transcription regulator with sequence-specific DNA binding, chromatin binding, and protein binding activities, and is localized to the nucleus. In garden lettuce (Lactuca sativa) on chromosome 5, this gene is associated with trichome morphogenesis, anther wall tapetum development, and the regulation of DNA-templated transcription. It is linked to tapetum development, pollen development, pollen wall formation, sporopollenin biosynthesis, aluminum tolerance, secondary cell wall thickening in anther endothecium, callose wall degradation, pollen exine formation, and pollen cell wall formation. Associations with heterosis have also been noted. Studies of related genes in other species connect the family to tapetal programmed cell death, male fertility, and pollen sexine development, while broader family associations include reversible male sterility, fruit seed number, sugar content, and low temperature stress response.