Ethylene modulates root cortical senescence in barley.

ABSTRACT: Background and Aims:Root cortical senescence (RCS) is a poorly understood phenomenon with implications for adaptation to edaphic stress. It was hypothesized that RCS in barley (Hordeum vulgare L.) is (1) accelerated by exogenous ethylene exposure; (2) accompanied by differential expression of ethylene synthesis and signalling genes; and (3) associated with differential expression of programmed cell death (PCD) genes. Methods:Gene expression of root segments from four barley genotypes with and without RCS was evaluated using quantitative real-time PCR (qRT-PCR). The progression of RCS was manipulated with root zone ethylene and ethylene inhibitor applications. Key Results:The results demonstrate that ethylene modulates RCS. Four genes related to ethylene synthesis and signalling were upregu

SUBMITTER: Schneider HM 

PROVIDER: S-EPMC6025243 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature