HCC1, a Polygalacturonase, Regulates Chlorophyll Degradation via the Ethylene Synthesis Pathway.

ABSTRACT: Chlorophyll degradation is an important physiological process and is essential for plant growth and development. However, how chlorophyll degradation is controlled at the cellular and molecular level remains largely elusive. Pectin is a main component of the primary cell wall, and polygalacturonases (PGs) is a group of pectin-hydrolases that cleaves the pectin backbone and release oligogalacturonide. Whether and how PGs affect chlorophyll degradation metabolism and its association with ethylene (ETH) have not been reported before. Here, we report a novel function of PG in a mutant 'high chlorophyll content1' hcc1, which displayed a decrease in growth and yield. Our morphological, biochemical and genetic analyses of hcc1, knockout lines and complementation lines confirm the function of HCC1

SUBMITTER: Liao Y 

PROVIDER: S-EPMC10710397 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature