A family of auxin conjugate hydrolases from Solanum lycopersicum and analysis of their roles in flower pedicel abscission.

ABSTRACT:

Background

Auxin conjugates are hydrolyzed to release free auxin to ensure defined cellular auxin levels or gradients within tissues for proper development or response to environmental signals. The auxin concentration in the abscission zone (AZ) is thought to play an important role in mediating the abscission lag phase.

Results

In this study, the full cDNA sequences of seven tomato ILR1-like SlILL genes were identified and characterized, All SlILLs were found to have auxin conjugate hydrolysis activity. The effects of different auxin conjugates on abscission identified IAA-Ile as a candidate to determine the auxin conjugate and auxin conjugate hydrolysis functions in abscission. Treatment of pedicel explants with IAA-Ile for different times showed that application before 6 h

SUBMITTER: Fu X 

PROVIDER: S-EPMC6547480 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature