Modulation of plant growth and development through altered ethylene binding affinity of the ethylene receptor ETR1.

ABSTRACT: Arabidopsis senses ethylene through a five-member family of ethylene receptors, of which the ethylene receptor ETR1 plays the major role. We examined how changes in ethylene binding affinity of ETR1 can regulate physiological and molecular responses to ethylene, taking advantage of an Asp25Asn mutation that still produces a functional ETR1 receptor (ETR1^D25N) but one with 100-fold reduced ethylene binding affinity compared to wild-type ETR1 (ETR1^wt). Analysis was performed in a genetic background that lacks the five native members of the receptor family so that the specific role of ETR1 in plant growth and development could be assessed. From this analysis, we determined that changes in ethylene binding affinity of ETR1 are reflected in plant growth and responses to et

SUBMITTER: Aman S 

PROVIDER: S-EPMC11971883 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature