PPH — Triticum aestivum

Summary

TRAESCS7B02G250200 (TaPPH, also known as TaCRN1-7B or TaNYC3-7B) on wheat chromosome 7B encodes a pheophytinase with an alpha/beta hydrolase fold, localizing to the chloroplast thylakoid membrane and stroma. The gene is associated with chlorophyll breakdown, leaf senescence, and programmed cell death regulation, as well as responses to fructose and hypersensitive response regulation. TaPPH is linked to agronomically important traits including grain weight, grain yield, grain protein content, harvest index, seed size, drought tolerance, flag leaf senescence, chlorophyll content, and leaf yellowing tolerance. Additional associations include root morphology and weight, ear number, starch content, proline content, and disease tolerance. Studies of related genes in other species link the family to lesion formation, cell death control, and pathogen resistance, as well as chlorophyll content and sheath traits.