Responses of Autumn Phenology to Climate Change and the Correlations of Plant Hormone Regulation.

ABSTRACT: Current understanding of autumn phenological responses to climate change in deciduous tree species remains limited, mainly due to the difficulties in defining autumn events and the lack of knowledge about its mechanism. Here we applied a method based on measuring chlorophyll A (Chla) content in leaf tissue during the entire autumn senescence processes to appropriately quantify autumn phenological processes. Beginning of leaf coloring could be defined as when about 50% of the Chl was lost. End of leaf coloring could be defined as when about 95% of the Chl was lost. Then the mechanism behind the timing of autumn senescence responses to climate change through hormone regulation was studied for the first time. Four dominate deciduous tree species with representative senescence type (Salix baby

SUBMITTER: Zhang S 

PROVIDER: S-EPMC7270090 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature