Arabidopsis Phototropins Participate in the Regulation of Dark-Induced Leaf Senescence.

ABSTRACT: Senescence is the final stage of plant development, affecting individual organs or the whole organism, and it can be induced by several environmental factors, including shading or darkness. Although inevitable, senescence is a complex and tightly regulated process, ensuring optimal remobilization of nutrients and cellular components from senescing organs. Photoreceptors such as phytochromes and cryptochromes are known to participate in the process of senescence, but the involvement of phototropins has not been studied to date. We investigated the role of these blue light photoreceptors in the senescence of individually darkened Arabidopsis thaliana leaves. We compared several physiological and molecular senescence markers in darkened leaves of wild-type plants and phototropin mutants (phot

SUBMITTER: Eckstein A 

PROVIDER: S-EPMC7918785 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature