ArticleJournal of experimental botany2022
Carpel-specific down-regulation of GhCKXs in cotton significantly enhances seed and fiber yield.
Article in Journal of experimental botany, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 23 citations in OpenAlex.
- Differential activity of CYTOKININ OXIDASE/DEHYDROGENASE3 (CKX3) and CKX5 genes in regulating yield components in Brassica napus L.Plant molecular biology · 2026Article
- Article
- Special Regulation ofGenes · 2025Article
- Article
- Article
- Simultaneous improvement of fiber yield and quality in upland cotton (Molecular breeding : new strategies in plant improvement · 2024Article
- Comprehensive molecular evolutionary analysis of small heat shock proteins in five diploid Gossypium species.The plant genome · 2024Article
- Genomic insights into CKX genes: key players in cotton fibre development and abiotic stress responses.PeerJ · 2024Article
- GhCKX14 responding to drought stress by modulating antioxi-dative enzyme activity in Gossypium hirsutum compared to CKX family genes.BMC plant biology · 2023Article
- Modifications of Phytohormone Metabolism Aimed at Stimulation of Plant Growth, Improving Their Productivity and Tolerance to Abiotic and Biotic Stress Factors.Plants (Basel, Switzerland) · 2022Review
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Authors and funding
17 authors at 1 institution in 1 country.
Funding
Abstract
Cytokinin is considered to be an important driver of seed yield. To increase the yield of cotton while avoiding the negative consequences caused by constitutive overproduction of cytokinin, we down-regulated specifically the carpel genes for cytokinin oxidase/dehydrogenase (CKX), a key negative regulator of cytokinin levels, in transgenic cotton. The carpel-specific down-regulation of CKXs significantly enhanced cytokinin levels in the carpels. The elevated cytokinin promoted the expression of carpel- and ovule-development-associated genes, GhSTK2, GhAG1, and GhSHP, boosting ovule formation and thus producing more seeds in the ovary. Field experiments showed that the carpel-specific increase of cytokinin significantly increased both seed yield and fiber yield of cotton, without resulting in detrimental phenotypes. Our study details the regulatory mechanism of cytokinin signaling for seed development, and provides an effective and feasible strategy for yield improvement of seed crops.
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