Genome-wide association studies of peduncle length in wheat under rain-fed and irrigating field conditions

Genome-wide association studies of peduncle length in wheat under rain-fed and irrigating field conditions

Copyright © 2022 Elsevier GmbH. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 280(2023) vom: 01. Jan., Seite 153854
1. Verfasser: Wang, Tingting (VerfasserIn)
Weitere Verfasser: Su, Ning, Lu, Jianan, Zhang, Ruipu, Sun, Xuming, Weining, Song
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Bread wheat Co-expression analysis Drought tolerance GWAS Haplotype analysis Peduncle length
Beschreibung
Zusammenfassung:Copyright © 2022 Elsevier GmbH. All rights reserved.
Drought is one of the most destructive environmental factors limiting wheat production and food security globally. Peduncle length (PLE) is an important morphological trait to determine plant architecture, photosynthate transport, and yield formation, which is also considered a useful index for drought tolerance in wheat. However, the genetic basis of wheat PLE is not well studied at present. Here, a large-scale genome-wide association study (GWAS) of PLE was performed using a panel of 282 wheat accessions with the Wheat 660K SNP array genotyping under rain-fed and irrigating field conditions. Totally, 1,301 significant marker-trait associations (MTAs) were identified using the threshold of p-value < 4.16 × 10-4, five of which were high-confidence. Furthermore, combining GWAS intervals, previously reported QTLs, expression levels, homologous genes, and selected sweep analysis, a total of 5 candidate genes were detected to associate with drought stress. Moreover, the expression levels of TraesCS2A02G082100 were significantly up-regulated under drought conditions and co-localized in the selected sweep region, suggesting it is a drought-responsive gene. Our results shed light on the genetic basis underlying wheat drought tolerance, which accelerates the marker-assistant selection and genetic improvement through genomic breeding in wheat
Beschreibung:Date Completed 13.01.2023
Date Revised 13.01.2023
published: Print-Electronic
Citation Status MEDLINE
ISSN:1618-1328
DOI:10.1016/j.jplph.2022.153854