气候变化领域集成服务门户(CCPortal): Genome-wide association study for seedling heat tolerance under two temperature conditions in bread wheat (Triticum aestivum L.)

CCPortal

DOI	10.1186/s12870-024-05116-2
	Genome-wide association study for seedling heat tolerance under two temperature conditions in bread wheat (Triticum aestivum L.)
	Fu, Chao; Zhou, Ying; Liu, Ankui; Chen, Rui; Yin, Li; Li, Cong; Mao, Hailiang
发表日期	2024
ISSN	1471-2229
起始页码	24
结束页码	1
卷号	24 期号:1
英文摘要	Background As the greenhouse effect intensifies, global temperatures are steadily increasing, posing a challenge to bread wheat (Triticum aestivum L.) production. It is imperative to comprehend the mechanism of high temperature tolerance in wheat and implement breeding programs to identify and develop heat-tolerant wheat germplasm and cultivars. Results To identify quantitative trait loci (QTL) related to heat stress tolerance (HST) at seedling stage in wheat, a panel of 253 wheat accessions which were re-sequenced used to conduct genome-wide association studies (GWAS) using the factored spectrally transformed linear mixed models (FaST-LMM). For most accessions, the growth of seedlings was found to be inhibited under heat stress. Analysis of the phenotypic data revealed that under heat stress conditions, the main root length, total root length, and shoot length of seedlings decreased by 47.46%, 49.29%, and 15.19%, respectively, compared to those in normal conditions. However, 17 varieties were identified as heat stress tolerant germplasm. Through GWAS analysis, a total of 115 QTLs were detected under both heat stress and normal conditions. Furthermore, 15 stable QTL-clusters associated with heat response were identified. By combining gene expression, haplotype analysis, and gene annotation information within the physical intervals of the 15 QTL-clusters, two novel candidate genes, TraesCS4B03G0152700/TaWRKY74-B and TraesCS4B03G0501400/TaSnRK3.15-B, were responsive to temperature and identified as potential regulators of HST in wheat at the seedling stage. Conclusions This study conducted a detailed genetic analysis and successfully identified two genes potentially associated with HST in wheat at the seedling stage, laying a foundation to further dissect the regulatory mechanism underlying HST in wheat under high temperature conditions. Our finding could serve as genomic landmarks for wheat breeding aimed at improving adaptation to heat stress in the face of climate change.
英文关键词	Heat stress tolerance; GWAS; QTL; Seedling stage; Triticum Aestivem L.
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001228906100005
来源期刊	BMC PLANT BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302349
作者单位	Huazhong Agricultural University
推荐引用方式 GB/T 7714	Fu, Chao,Zhou, Ying,Liu, Ankui,et al. Genome-wide association study for seedling heat tolerance under two temperature conditions in bread wheat (Triticum aestivum L.)[J],2024,24(1).
APA	Fu, Chao.,Zhou, Ying.,Liu, Ankui.,Chen, Rui.,Yin, Li.,...&Mao, Hailiang.(2024).Genome-wide association study for seedling heat tolerance under two temperature conditions in bread wheat (Triticum aestivum L.).BMC PLANT BIOLOGY,24(1).
MLA	Fu, Chao,et al."Genome-wide association study for seedling heat tolerance under two temperature conditions in bread wheat (Triticum aestivum L.)".BMC PLANT BIOLOGY 24.1(2024).