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Combined genome and transcriptome analysis of elite fiber quality in Gossypium barbadense.
Song, Xiaohui; Zhu, Guozhong; Su, Xiujuan; Yu, Yujia; Duan, Yujia; Wang, Haitang; Shang, Xiaoguang; Xu, Haijiang; Chen, Quanjia; Guo, Wangzhen.
Afiliación
  • Song X; State Key Laboratory of Crop Genetics and Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
  • Zhu G; Engineering Research Center of Ministry of Education for Cotton Germplasm Enhancement and Application, Nanjing Agricultural University, Nanjing 210095, China.
  • Su X; State Key Laboratory of Crop Genetics and Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
  • Yu Y; Engineering Research Center of Ministry of Education for Cotton Germplasm Enhancement and Application, Nanjing Agricultural University, Nanjing 210095, China.
  • Duan Y; State Key Laboratory of Crop Genetics and Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
  • Wang H; Engineering Research Center of Ministry of Education for Cotton Germplasm Enhancement and Application, Nanjing Agricultural University, Nanjing 210095, China.
  • Shang X; College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, China.
  • Xu H; State Key Laboratory of Crop Genetics and Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
  • Chen Q; Engineering Research Center of Ministry of Education for Cotton Germplasm Enhancement and Application, Nanjing Agricultural University, Nanjing 210095, China.
  • Guo W; State Key Laboratory of Crop Genetics and Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
Plant Physiol ; 195(3): 2158-2175, 2024 Jun 28.
Article en En | MEDLINE | ID: mdl-38513701
ABSTRACT
Gossypium barbadense, which is one of several species of cotton, is well known for its superior fiber quality. However, the genetic basis of its high-quality fiber remains largely unexplored. Here, we resequenced 269 G. barbadense accessions. Phylogenetic structure analysis showed that the set of accessions was clustered into 3 groups G1 and G2 mainly included modern cultivars from Xinjiang, China, and G3 was related to widely introduced accessions in different regions worldwide. A genome-wide association study of 5 fiber quality traits across multiple field environments identified a total of 512 qtls (main-effect QTLs) and 94 qtlEs (QTL-by-environment interactions) related to fiber quality, of which 292 qtls and 57 qtlEs colocated with previous studies. We extracted the genes located in these loci and performed expression comparison, local association analysis, and introgression segment identification. The results showed that high expression of hormone-related genes during fiber development, introgressions from Gossypium hirsutum, and the recombination of domesticated elite allelic variation were 3 major contributors to improve the fiber quality of G. barbadense. In total, 839 candidate genes with encoding region variations associated with elite fiber quality were mined. We confirmed that haplotype GB_D03G0092H traced to G. hirsutum introgression, with a 1-bp deletion leading to a frameshift mutation compared with GB_D03G0092B, significantly improved fiber quality. GB_D03G0092H is localized in the plasma membrane, while GB_D03G0092B is in both the nucleus and plasma membrane. Overexpression of GB_D03G0092H in Arabidopsis (Arabidopsis thaliana) significantly improved the elongation of longitudinal cells. Our study systematically reveals the genetic basis of the superior fiber quality of G. barbadense and provides elite segments and gene resources for breeding high-quality cotton cultivars.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Genoma de Planta / Gossypium / Perfilación de la Expresión Génica / Sitios de Carácter Cuantitativo / Fibra de Algodón / Estudio de Asociación del Genoma Completo Idioma: En Revista: Plant Physiol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Genoma de Planta / Gossypium / Perfilación de la Expresión Génica / Sitios de Carácter Cuantitativo / Fibra de Algodón / Estudio de Asociación del Genoma Completo Idioma: En Revista: Plant Physiol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos