2016 journal article
Modifications to a LATE MERISTEM IDENTITY gene are responsible for the major leaf shapes of Upland cotton (Gossypium hirsutum L.)
Proceedings of the National Academy of Sciences of the United States of America, 114(1), E57–E66.
Contributors: R. Andres n, V. Coneva *, M. Frank *, J. Tuttle n, L. Samayoa n, S. Han n, B. Kaur n, L. Zhu n
author keywords: cotton; leaf shape; okra; gene cloning
MeSH headings : Amino Acid Sequence / genetics; Frameshift Mutation / genetics; Gene Expression Regulation, Plant; Genes, Plant / genetics; Gossypium / genetics; Gossypium / physiology; Plant Leaves / genetics; Plant Leaves / physiology; Promoter Regions, Genetic / genetics; Transcription Factors / genetics
TL;DR:
The results indicate that subokra is the ancestral leaf shape of tetraploid cotton that gave rise to the okra allele and that normal is a derived mutant allele that came to predominate and define the leafshape of cultivated cotton.
(via Semantic Scholar)
open access via www.pnas.org (publisher PDF)
UN Sustainable Development Goal Categories
2. Zero Hunger
(Web of Science)
13. Climate Action
(Web of Science; OpenAlex)
Source: ORCID
Added: January 30, 2019
Significance Leaves are the primary source of photoassimilate in crop plants. A precise understanding of the genetic architecture underlying leaf morphology is critical to engineering climate-resilient crop varieties. An ideal cotton cultivar would produce a lower canopy of broad, normal leaves before transitioning to an upper canopy of highly lobed, okra leaves. Here we show that the major leaf shapes of cotton are controlled by the okra locus, which encodes an HD-Zip transcription factor Gossypium hirsutum LATE MERISTEM IDENTITY1-D1b ( GhLMI1-D1b ). Using gene silencing, we temporarily induced normal leaf formation in okra , thus validating the candidate gene and creating the leaf shape ideotype in cotton. This study, identifying a single locus responsible for cotton leaf shape, expands the genetic toolbox for breeders to produce superior cotton varieties.