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Genomic variants affecting homoeologous gene expression dosage contribute to agronomic trait variation in allopolyploid wheat

Agriculture

Genomic variants affecting homoeologous gene expression dosage contribute to agronomic trait variation in allopolyploid wheat

F. He, W. Wang, et al.

This groundbreaking study reveals how wheat accessions utilize expression quantitative trait loci (eQTL) to influence homoeolog expression dosage, shedding light on the genomic variants that shape agronomic traits. Conducted by a diverse team of experts including Fei He, Wei Wang, and Katherine W. Jordan, it emphasizes the critical role of genetic factors in enhancing crop yield in polyploid wheat.

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Playback language: English
Abstract
This study uses diverse wheat accessions to map expression quantitative trait loci (eQTL) and evaluate their effects on population-scale variation in homoeolog expression dosage. The relative contribution of cis- and trans-eQTL is affected by selection and demographic events. Cis-acting variants largely influence homoeolog expression dosage and appear to be under selection. The frequency and expression of homoeologous gene alleles with strong expression dosage bias predict variation in yield-related traits, likely impacted by breeding. The study highlights the importance of genomic variants affecting homoeolog expression dosage in shaping agronomic phenotypes and their potential utility for yield improvement in polyploid crops.
Publisher
Nature Communications
Published On
Feb 11, 2022
Authors
Fei He, Wei Wang, William B. Rutter, Katherine W. Jordan, Jie Ren, Ellie Taagen, Noah DeWitt, Deepmala Sehgal, Sivakumar Sukumaran, Susanne Dreisigacker, Matthew Reynolds, Jyotirmoy Halder, Sunish Kumar Sehgal, Shuyu Liu, Jianli Chen, Allan Fritz, Jason Cook, Gina Brown-Guedira, Mike Pumphrey, Arron Carter, Mark Sorrells, Jorge Dubcovsky, Matthew J. Hayden, Alina Akhunova, Peter L. Morrell, Les Szabo, Matthew Rouse, Eduard Akhunov
Tags
wheat
eQTL
homoeolog expression
genomic variants
yield improvement
crop science
polyploid crops
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