Quantitative trait loci mapping and candidate gene analysis of stoma-related traits in wheat (Triticum aestivum L.) glumes

被引:2
作者
Li, Ning [1 ]
Dong, Fanfan [1 ]
Liu, Tongtong [2 ]
Yang, Jinwen [1 ]
Shi, Yugang [1 ]
Wang, Shuguang [1 ]
Sun, Daizhen [1 ]
Jing, Ruilian [3 ]
机构
[1] Shanxi Agr Univ, Coll Agron, Taigu, Peoples R China
[2] Shanxi Agr Univ, Coll Food Sci & Engn, Taigu, Peoples R China
[3] Chinese Acad Agr Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Inst Crop Sci, Beijing, Peoples R China
来源
PEERJ | 2022年 / 10卷
关键词
Wheat (Triticum aestivum L; Glume; Stomata; QTL; Candidate gene; WATER-USE EFFICIENCY; PURPLE ACID-PHOSPHATASE; EAR PHOTOSYNTHESIS; FLAG LEAF; PHYSIOLOGICAL TRAITS; ARABIDOPSIS-THALIANA; CARBON METABOLISM; WINTER-WHEAT; GAS-EXCHANGE; PLANT-GROWTH;
D O I
10.7717/peerj.13262
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The photosynthesis of wheat glumes makes important contributions to the yield. Stomata play a crucial role in regulating photosynthesis and transpiration in plants. However, the genetic base of wheat glume stomata is not fully understood. In this study, stomatal length (SL), stomatal width (SW), stomatal density (SD), potential conductance index (PCI) of stomata, stomatal area (SA), and stomatal relative area (SRA) were measured in different parts of wheat glumes from a doubled haploid (DH) population and their parents. Quantitative trait loci (QTLs) of these traits were anchored on a high-density genetic linkage map of the DH population. A total of 61 QTLs for stoma-related traits were mapped onto 16 chromosomes, and each one accounted for 3.63 to 19.02% of the phenotypic variations. Two QTL hotspots were detected in two marker intervals, AX-109400932' AX-110985652 and AX-108972184' AX-108752564, on chromosome 6A. Five possibly candidate genes (TraesCS6A02G105400, TraesCS6A02G106400, TraesCS6A02G115100, TraesCS6A02G115400, and TraesCS6A02G116200) for stoma related traits of wheat glumes were screened out, according to their predicted expression levels in wheat glumes or spikes. The expression of these genes may be induced by a variety of abiotic stresses. These findings provide insights for cloning and functional characterization of stoma-related candidate genes in wheat glumes.
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页数:21
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