Control of Organ Abscission and Other Cell Separation Processes by Evolutionary Conserved Peptide Signaling.

ABSTRACT: Plants both generate and shed organs throughout their lifetime. Cell separation is in function during opening of anthers to release pollen; floral organs are detached after pollination when they have served their purpose; unfertilized flowers are shed; fruits and seeds are abscised from the mother plant to secure the propagation of new generations. Organ abscission takes place in specialized abscission zone (AZ) cells where the middle lamella between adjacent cell files is broken down. The plant hormone ethylene has a well-documented promoting effect on abscission, but mutation in ethylene receptor genes in Arabidopsis thaliana only delays the abscission process. Microarray and RNA sequencing have identified a large number of genes differentially expressed in the AZs, especially gen

SUBMITTER: Shi CL 

PROVIDER: S-EPMC6681299 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature