PS1 — Asparagus officinalis

Summary

A4U43_C02F7090, designated AoPS1, encodes a protein containing a PIN domain and a forkhead-associated (FHA) domain, placing it in the Parallel Spindle 1 family. In asparagus, this gene is associated with meiotic spindle positioning, microsporogenesis, pollen development, and response to heat. It is linked to the production of diploid pollen grains and meiotic restitution, as well as glucosinolate biosynthesis. The encoded product localises to the nuclear membrane, plasmalemma, and nucleus. Related genes in other species link the family to male meiosis spindle orientation, diploid pollen formation, and sulfate content. Through sequence similarity, the family has also been connected to amylose content, sulfur content, and root morphology traits.