Genome-wide dissection of genes shaping inflorescence morphology in 242 Chinese south-north sorghum accessions.
Candidate genes
Genome-wide association study
Inflorescence morphology
Quantitative Trait Loci
Sorghum
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
28 10 2024
28 10 2024
Historique:
received:
30
04
2024
accepted:
15
10
2024
medline:
29
10
2024
pubmed:
29
10
2024
entrez:
29
10
2024
Statut:
epublish
Résumé
The inflorescences morphology (IM) of sorghum (Sorghum bicolor L. Moench) affects its resistance to pests, diseases, and grain yields. However, the specific genetic factors underlying in IM are not yet fully elucidated. Here we conducted a comprehensive genome-wide association analysis (GWAS) to identify the stable and adaptive Quantitative Trait Loci (QTL) for five IM traits (panicle length, the number of cob nodes, the number of primary branches, the largest length of the primary branch, and panicle type) in a sorghum panel, which adapted to different environments from the south to north in China. Totally, 2,015,850 high quality single nucleotide polymorphisms (SNPs) were obtained. Population structure analysis showed that two distinct genetic sub-populations were divided according to their geographic origin. Seventy-one QTLs distributed in 41 genetic regions on 9 chromosomes were identified. These regions harbored 21 high-confident candidate genes that were homologous to rice domestication genes, including 7 related to IM. Two domestication-related genes (Sobic.003G052700 and Sobic.006G247700) were located into two major QTL regions (QTL3.4721839 and QTL6.58709500) which were identified in multi-environments. Allelic variations in the two genes displayed a geographical pattern, indicating that different IM traits were selected by south and north sorghum breeders, such as south sorghums had long and loose panicles in order to adapt the hot and humid climate, while north sorghums had short and compact panicle to increase planting density and grain yield per unit area due to dry climate. This work provides new breeding strategies and resources for developing locally adapted sorghum varieties.
Identifiants
pubmed: 39468118
doi: 10.1038/s41598-024-76568-7
pii: 10.1038/s41598-024-76568-7
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
25828Subventions
Organisme : This study was supported by National Key R&D Program of China
ID : 2018YFD1000706/2018YFD10007011
Organisme : National Natural Science Foundation of China
ID : 32172036, 31571681
Organisme : Zhejiang Major Scientific and Technological Project of Agricultural (Upland crop) Breeding ,and Zhejiang Key Laboratory of Digital Dry Land Crops
ID : 2021C02064-6，2022E10012
Organisme : Guizhou Provincial Science and Technology Plan Project, Innovation Capacity Building Project of Guizhou Scientific Institutions, Guizhou Academy of Agricultural Sciences Key Laboratory Project for Crop Gene Resources and Germplasm Innovation in Karst Mountain regions
ID : QKHS [2022]key026， QKFQ[2022]007]，QNKZZZY(2023)06
Informations de copyright
© 2024. The Author(s).
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