id1 — Zea mays

Summary

ZM00001EB047750, designated id1 (also known as ZmEHD2 or EHD2) on maize chromosome 1, encodes a C2H2-type zinc-finger transcription factor belonging to the IDD (INDETERMINATE DOMAIN) family. The protein localises to the nucleus and exhibits sequence-specific DNA-binding and transcription factor activity. In maize, id1 is associated with flowering time, particularly responses to short-day and long-day photoperiods, and is linked to C4 photosynthesis, sucrose and auxin anabolism, meristem determinacy, cell wall biogenesis, and responses to drought, acidic pH, and aluminium stress. The gene is also linked to agronomic traits including grain yield, anthesis-silking interval, plant height, leaf angle and size, chlorophyll and starch content, and radiation use efficiency. Studies of related genes in other species connect the family to heading date, tiller number, grain number and weight, and overall yield.