Genetic Regulation of Vessel Morphology in Populus.

ABSTRACT: During secondary growth, forest trees can modify the anatomy of the wood produced by the vascular cambium in response to environmental conditions. Notably, the trees of the model angiosperm genus, Populus, reduce the risk of cavitation and hydraulic failure under water stress by producing water-conducting vessel elements with narrow lumens, which are more numerous and more interconnected with each other. Here, we determined the genetic architecture of vessel traits affecting hydraulic physiology and resilience to water stress. Vessel traits were measured for clonally replicated genotypes of a unique Populus deltoides x nigra population carrying genomically defined insertions and deletions that create gene dosage variation. We found significant phenotypic variation for

SUBMITTER: Rodriguez-Zaccaro FD 

PROVIDER: S-EPMC8419429 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature