Abstract
Peas are essential for human nutrition and played a crucial role in the discovery of Mendelian laws of inheritance. In this study, we assembled the genome of the elite vegetable pea cultivar ‘Zhewan No. 1’ at the chromosome level and analyzed resequencing data from 314 accessions, creating a comprehensive map of genetic variation in peas. We identified 235 candidate loci associated with 57 important agronomic traits through genome-wide association studies. Notably, we pinpointed the causal gene haplotypes responsible for four Mendelian traits: stem length (Le/le), flower color (A/a), cotyledon color (I/i) and seed shape (R/r). Additionally, we discovered the genes controlling pod form (Mendelian P/p) and hilum color. Our study also involved constructing a gene expression atlas across 22 tissues, highlighting key gene modules related to pod and seed development. These findings provide valuable pea genomic information and will facilitate the future genome-informed improvement of pea crops.
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Data availability
The genome sequencing and assembly data of Pisum sativum cultivar Zhewan1 (PeaZW1) have been deposited at National Center for Biotechnology Information under the BioProject PRJNA1042956. The whole-genome sequencing of 237 accessions has also been deposited at NCBI under the BioProject PRJNA1035516. Transcriptome data from different tissues can be found under the BioProject PRJNA1108961. Source data are provided with this paper.
Code availability
All codes and tools used in this study are described in Methods and the Reporting Summary.
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Acknowledgements
We are grateful to Biomarker Technologies Corporation, Beijing and China National Gene Bank (CNGB), Beijing Novogene Co. Ltd for technical support with PacBio HiFi sequencing, Hi-C sequencing, Iso-seq, RNA-seq and whole genomics sequencing. This work was supported by the Zhejiang Provincial Important Science and Technology Specific Projects (grant no. 2021C02065 to N.L., grant no. 2022C02016 to Y.G.), State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products (grant no. 2021DG700024-ZZ202206 to N.L.), National Natural Science Foundation of China (grant no. 31872114 to N.L.) and Zhejiang Basic Public Welfare Research Project (grant no. LGN20C150006 to N.L., grant no. LGN21C150007 to Z.F.).
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Y.G., N.L., L.Z., T.Z., X.L. and M.Z. conceived the project and designed the study. N.L., T.Z., L.Z., X.L., Z.Z., Y.Z., Z.F., Q.G., K.S., W.S. and Y.D. performed data analyses. N.L. and T.Z. drafted the manuscript. G.Z., X.Z., X.L., X.C., X.Y., Z.F., J.O., B.W. and Y.B. collected samples and performed experiments. N.L. and X.L. wrote the manuscript, and X.G., M.Z., L.Z. and T.Z. revised the manuscript. All authors read and approved the manuscript.
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Liu, N., Lyu, X., Zhang, X. et al. Reference genome sequence and population genomic analysis of peas provide insights into the genetic basis of Mendelian and other agronomic traits. Nat Genet 56, 1964–1974 (2024). https://doi.org/10.1038/s41588-024-01867-8
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DOI: https://doi.org/10.1038/s41588-024-01867-8