Isoprene enhances leaf cytokinin metabolism and induces early senescence.

ABSTRACT: Isoprene, a major biogenic volatile hydrocarbon of climate-relevance, indisputably mitigates abiotic stresses in emitting plants. However functional relevance of constitutive isoprene emission in unstressed plants remains contested. Isoprene and cytokinins (CKs) are synthesized from a common substrate and pathway in chloroplasts. It was postulated that isoprene emission may affect CK-metabolism. Using transgenic isoprene-emitting (IE) Arabidopsis and isoprene nonemitting (NE) RNA-interference grey poplars (paired with respective NE and IE genotypes), the life of individual IE and NE leaves from emergence to abscission was followed under stress-free conditions. We monitored plant growth rate, aboveground developmental phenotype, modelled leaf photosynthetic energy status, quantified the abu

SUBMITTER: Dani KGS 

PROVIDER: S-EPMC9300082 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature