Pto — Solanum lycopersicum

Summary

SOLYC05G013320.1 (symbol Pto, also known as SlHERK1, HERK1 and NORK) on tomato chromosome 5 encodes a receptor-like protein kinase of the ANXUR1-like family with protein serine/threonine kinase activity, calcium ion binding, ATP binding and protein homodimerization activity, and is localised to the plasma membrane. The gene is associated with a wide range of biological processes including regulation of signalling, induction of programmed cell death, tissue morphogenesis, lipid storage and responses to salicylic acid and oxygen metabolism. It has been linked to several agronomically important traits such as fruit weight and shape, sugar content, chlorophyll content, root length, leaf shape and curling, seed maturation, stigma exsertion, and disease resistance including bacterial blight and bacterial speck. Studies of related genes in other species connect the family to bacterial disease resistance and fenthion sensitivity.