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The identification of grain size genes by RapMap reveals directional selection during rice domestication

Agriculture

The identification of grain size genes by RapMap reveals directional selection during rice domestication

J. Zhang, D. Zhang, et al.

Explore the groundbreaking study by Juncheng Zhang and colleagues, introducing RapMap—a swift method for multi-QTL mapping in rice. By cloning eight genes responsible for grain size, this research unveils a remarkable 75% of the variation in grain shape and highlights the intense selection processes in indica rice domestication.

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Playback language: English
Abstract
This study introduces RapMap, a method for rapid multi-QTL mapping using F2 gradient populations. The authors demonstrate RapMap's feasibility by cloning eight rice grain-size genes, explaining 75% of grain shape variation. Allele frequency analysis reveals directional selection for slender, long grains during indica rice domestication, highlighting the strong selection of major grain-size genes.
Publisher
Nature Communications
Published On
Jul 22, 2021
Authors
Juncheng Zhang, Dejian Zhang, Yawei Fan, Cuicui Li, Pengkun Xu, Wei Li, Qi Sun, Xiaodong Huang, Chunyu Zhang, Linyue Wu, Huaizhou Yang, Shiyu Wang, Xiaomin Su, Xingxing Li, Yingying Song, Meng-en Wu, Xingming Lian, Yibo Li
Tags
RapMap
multi-QTL mapping
rice genetics
grain size
directional selection
indica rice
gene cloning

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