التفاصيل البيبلوغرافية
| العنوان: |
Whole‐genome sequencing of allotetraploid bermudagrass reveals the origin of Cynodon and candidate genes for salt tolerance. |
| المؤلفون: |
Wang, Huan, Fang, Tilin, Li, Xiaoning, Xie, Yan, Wang, Wei, Hu, Tao, Kudrna, David, Amombo, Erick, Yin, Yanling, Fan, Shugao, Gong, Zhiyun, Huang, Yicheng, Xia, Chunjiao, Zhang, Jianwei, Wu, Yanqi, Fu, Jinmin |
| المصدر: |
Plant Journal; Jun2024, Vol. 118 Issue 6, p2068-2084, 17p |
| مصطلحات موضوعية: |
BERMUDA grass, WHOLE genome sequencing, BIOLOGICAL evolution, GENOME-wide association studies, GENES, NUCLEOTIDE sequencing, SINGLE nucleotide polymorphisms, COMPARATIVE genomics |
| مستخلص: |
SUMMARY: Bermudagrass (Cynodon dactylon) is a globally distributed, extensively used warm‐season turf and forage grass with high tolerance to salinity and drought stress in alkaline environments. However, the origin of the species and genetic mechanisms for salinity tolerance in the species are basically unknown. Accordingly, we set out to study evolution divergence events in the Cynodon genome and to identify genes for salinity tolerance. We developed a 604.0 Mb chromosome‐level polyploid genome sequence for bermudagrass 'A12359' (n = 18). The C. dactylon genome comprises 2 complete sets of homoeologous chromosomes, each with approximately 30 000 genes, and most genes are conserved as syntenic pairs. Phylogenetic study showed that the initial Cynodon species diverged from Oropetium thomaeum approximately 19.7–25.4 million years ago (Mya), the A and B subgenomes of C. dactylon diverged approximately 6.3–9.1 Mya, and the bermudagrass polyploidization event occurred 1.5 Mya on the African continent. Moreover, we identified 82 candidate genes associated with seven agronomic traits using a genome‐wide association study, and three single‐nucleotide polymorphisms were strongly associated with three salt resistance genes: RAP2‐2, CNG channels, and F14D7.1. These genes may be associated with enhanced bermudagrass salt tolerance. These bermudagrass genomic resources, when integrated, may provide fundamental insights into evolution of diploid and tetraploid genomes and enhance the efficacy of comparative genomics in studying salt tolerance in Cynodon. Significance Statement: We have successfully sequenced the first heterozygous, tetraploid genome of Cynodon dactylon, a key warm‐season turfgrass and forage crop. Our GWAS analysis has identified genes linked to vital agronomic traits, enhancing our understanding of bermudagrass cultivation. [ABSTRACT FROM AUTHOR] |
|
Copyright of Plant Journal is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder