PMEI — Brassica oleracea

Summary

BoPMEI (BOLC102_C05P007460.1) on cabbage chromosome 5 encodes a pectinesterase inhibitor, a member of the PCW enzyme inhibitor family containing a pectinesterase inhibitor domain and an invertase/methylesterase inhibitor domain. The gene product exhibits pectinesterase inhibitor activity and enzyme inhibitor activity, and is associated with downregulation of enzyme activity, pollen tube growth, and pollen development. It localizes to the chloroplast (GO:0009507). BoPMEI is linked to pectin methylesterase inhibition and fungal resistance. Studies of related genes in other species connect the PMEI family to root length, root morphology, and proline content.