Ethylene-Induced Hydrogen Sulfide Negatively Regulates Ethylene Biosynthesis by Persulfidation of ACO in Tomato Under Osmotic Stress.

ABSTRACT: A number of recent studies identified hydrogen sulfide (H₂S) as an important signal in plant development and adaptation to environmental stress. H₂S has been proven to participate in ethylene-induced stomatal closure, but how the signaling pathways of H₂S and ethylene interact is still unclear. Here, we reveal how H₂S controls the feedback-regulation of ethylene biosynthesis in tomato (Solanum lycopersicum) under osmotic stress. We found that ethylene induced the production of H₂S in guard cells. The supply of hypotaurine (HT; a H₂S scavenger) or DL-pro-pargylglycine (PAG; a synthetic inhibitor of H₂S) removed the effect of ethylene or osmotic stress on stomatal closure. This suggests that ethylene-induced

SUBMITTER: Jia H 

PROVIDER: S-EPMC6199894 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature