Natural variation in a CENTRORADIALIS homolog contributed to cluster fruiting and early maturity in cotton.

ABSTRACT:

Background

Plant architecture and the vegetative-reproductive transition have major impacts on the agronomic success of crop plants, but genetic mechanisms underlying these traits in cotton (Gossypium spp.) have not been identified.

Results

We identify four natural mutations in GoCEN-D_t associated with cluster fruiting (cl) and early maturity. The situ hybridization shows that GhCEN is preferentially expressed in cotton shoot apical meristems (SAM) of the main stem and axillary buds. Constitutive GhCEN-Dt overexpression suppresses the transition of the cotton vegetative apex to a reproductive shoot. Silencing GoCEN leads to early flowering and determinate growth, and in tetraploids causes the main stem to terminate in a floral bud, a novel phenotype that exemplifi

SUBMITTER: Liu D 

PROVIDER: S-EPMC6245773 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature