Insights into Interspecific Hybridization Events in Allotetraploid Cotton Formation from Characterization of a Gene-Regulating Leaf Shape.

ABSTRACT: The morphology of cotton leaves varies considerably. Phenotypes, including okra, sea-island, super-okra, and broad leaf, are controlled by a multiple allele locus, L₂ Okra leaf (L₂°) is an incomplete mutation that alters leaf shape by increasing the length of lobes with deeper sinuses. Using a map-based cloning strategy, we cloned the L₂ locus gene, which encodes a LATE MERISTEM IDENTITY 1 (LMI1)-like transcription factor (GhOKRA). Silencing GhOKRA leads to a change in phenotype from okra to broad leaf. Overexpression of GhOKRA in Arabidopsis thaliana greatly increases the degree of the leaf lobes and changes the leaf shape. Premature termination of translation in GhOKRA results in the production of broad leaves. The sequences of OKRA from diploid progenito

SUBMITTER: Chang L 

PROVIDER: S-EPMC5068863 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature