Natural variation in a CENTRORADIALIS homolog contributed to cluster fruiting and early maturity in cotton
| Autor: | Kai Guo, Jian Zhang, Weiran Wang, Jie Kong, Zhengsheng Zhang, Zhonghua Teng, Jianyan Zeng, Xianping Deng, Xiao Zhang, Jinxia Wang, Yuehua Xiao, Xueying Liu, Wenwen Wang, Dajun Liu, Dexin Liu, Tengfei Zhai |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Flower differentiation Gene Expression Map-based cloning Plant Science Cotton Flowers Biology Genes Plant 03 medical and health sciences Polyploid Axillary bud lcsh:Botany Botany Early maturity Determinate growth habit Gossypium Plant architecture Antirrhinum fungi CEN/TFL1 food and beverages Genetic Variation Meristem Indeterminate growth biology.organism_classification lcsh:QK1-989 Cluster fruiting Plant Breeding 030104 developmental biology Fruit Shoot Mutation Main stem Research Article |
| Zdroj: | BMC Plant Biology BMC Plant Biology, Vol 18, Iss 1, Pp 1-13 (2018) |
| ISSN: | 1471-2229 |
| Popis: | 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-Dt 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 exemplifies co-adaptation of polyploid subgenomes and suggests new research and/or crop improvement approaches. Natural cl variations are enriched in cottons adapted to high latitudes with short frost-free periods, indicating that mutants of GoCEN have been strongly selected for early maturity. Conclusion We show that the cotton gene GoCEN-Dt, a homolog of Antirrhinum CENTRORADIALIS, is responsible for determinate growth habit and cluster fruiting. Insight into the genetic control of branch and flower differentiation offers new approaches to develop early maturing cultivars of cotton and other crops with plant architecture appropriate for mechanical harvesting. Electronic supplementary material The online version of this article (10.1186/s12870-018-1518-8) contains supplementary material, which is available to authorized users. |
| Databáze: | OpenAIRE |
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