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Guan J, Zhang J, Gong D, Zhang Z, Yu Y, Luo G, Somta P, Hu Z, Wang S, Yuan X, Zhang Y, Wang Y, Chen Y, Laosatit K, Chen X, Chen H, Sha A, Cheng X, Xie H, Wang L. Genomic analyses of rice bean landraces reveal adaptation and yield related loci to accelerate breeding. Nat Commun 2022; 13:5707. [PMID: 36175442 PMCID: PMC9523027 DOI: 10.1038/s41467-022-33515-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 09/21/2022] [Indexed: 11/29/2022] Open
Abstract
Rice bean (Vigna umbellata) is an underexploited domesticated legume crop consumed for dietary protein in Asia, yet little is known about the genetic diversity of this species. Here, we present a high-quality reference genome for a rice bean landrace (FF25) built using PacBio long-read data and a Hi-C chromatin interaction map, and assess the phylogenetic position and speciation time of rice bean within the Vigna genus. We sequence 440 landraces (two core collections), and GWAS based on data for growth sites at three widely divergent latitudes reveal loci associated with flowering and yield. Loci harboring orthologs of FUL (FRUITFULL), FT (FLOWERING LOCUS T), and PRR3 (PSEUDO-RESPONSE REGULATOR 3) contribute to the adaptation of rice bean from its low latitude center of origin towards higher latitudes, and the landraces which pyramid early-flowering alleles for these loci display maximally short flowering times. We also demonstrate that copy-number-variation for VumCYP78A6 can regulate seed-yield traits. Intriguingly, 32 landraces collected from a mountainous region in South-Central China harbor a recently acquired InDel in TFL1 (TERMINAL FLOWER1) affecting stem determinacy; these materials also have exceptionally high values for multiple human-desired traits and could therefore substantially advance breeding efforts to improve rice bean. Rice bean is an underexploited legume crop that has many desirable properties against bio and abiotic stresses. Here, the authors report the genome assembly of this species, conduct population genetics studies and reveal the genetic variations associated with adaptation and yield traits.
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Affiliation(s)
- Jiantao Guan
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.,Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China.,Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jintao Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.,College of Agriculture, Yangtze University, Jingzhou, China
| | - Dan Gong
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.,College of Agriculture, Yangtze University, Jingzhou, China
| | - Zhengquan Zhang
- Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yang Yu
- Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Gaoling Luo
- Institute of Rice Research, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Prakit Somta
- Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom, Thailand
| | - Zheng Hu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Suhua Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xingxing Yuan
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Yaowen Zhang
- College of Agriculture, Shanxi Agricultural University, Taiyuan, China
| | - Yanlan Wang
- Crop Research Institute of Hunan Province, Changsha, China
| | - Yanhua Chen
- Institute of Rice Research, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Kularb Laosatit
- Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom, Thailand
| | - Xin Chen
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Honglin Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Aihua Sha
- College of Agriculture, Yangtze University, Jingzhou, China
| | - Xuzhen Cheng
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hua Xie
- Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China.
| | - Lixia Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.
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War AR, Murugesan S, Boddepalli VN, Srinivasan R, Nair RM. Mechanism of Resistance in Mungbean [ Vigna radiata (L.) R. Wilczek var. radiata] to bruchids, Callosobruchus spp. (Coleoptera: Bruchidae). FRONTIERS IN PLANT SCIENCE 2017; 8:1031. [PMID: 28676807 PMCID: PMC5477293 DOI: 10.3389/fpls.2017.01031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 05/29/2017] [Indexed: 05/03/2023]
Abstract
Mungbean [Vigna radiata (L.) R. Wilczek var. radiata] is an important pulse crop in Asia, and is consumed as dry seeds and as bean sprouts. It is an excellent source of digestible protein. Bruchids [Callosobruchus chinensis (L.) and Callosobruchus maculatus (F.)] are the important pests of mungbean and cause damage in the field and in storage. Bruchid infestation reduces the nutritional and market value of the grain and renders seeds unfit for human consumption, agricultural and commercial uses. These pests are controlled mainly by fumigation with highly toxic chemicals such as carbon disulfide, phosphene, and methyl bromide, or by dusting with several other insecticides, which leave residues on the grain, thus, threatening food safety. Some plant-based extracts have been found useful in controlling bruchids, but are not fully successful due to their short-term activity, rapid degradability, and potentially negative effect on seed germination. Although some wild sources of bruchid resistance in mungbean have been reported, which have been used to develop bruchid- resistant lines, undesirable genetic linkages threaten the proper exploitation of genetic diversity from wild germplasm into commercial cultivars. Further, biotype variation in bruchids has rendered some mungbean lines susceptible that otherwise would have been resistant to the pest. Host plant resistance is a cost-effective and a safe alternative to control bruchids in mungbean and is associated with morphological, biochemical, and molecular traits. These traits affect insect growth and development, thereby, reduce the yield losses by the pests. Understanding the defense mechanisms against insect pests could be utilized in exploiting these traits in crop breeding. This review discusses different traits in mungbean involved in defense against bruchids and their utility in pest management. We also highlight the breeding constraints for developing bruchid-resistant mungbean and how can these constraints be minimized. We further highlight the importance of supporting conventional breeding techniques by molecular techniques such as molecular markers linked to bruchid resistance.
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Affiliation(s)
- Abdul R. War
- World Vegetable Center, South Asia, HyderabadIndia
- *Correspondence: Abdul R. War, ;
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Isemura T, Kaga A, Tomooka N, Shimizu T, Vaughan DA. The genetics of domestication of rice bean, Vigna umbellata. ANNALS OF BOTANY 2010; 106:927-44. [PMID: 20880934 PMCID: PMC2990660 DOI: 10.1093/aob/mcq188] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Revised: 08/05/2010] [Accepted: 08/25/2010] [Indexed: 05/19/2023]
Abstract
BACKGROUND AND AIMS The Asian genus Vigna, to which four cultivated species (rice bean, azuki bean, mung bean and black gram) belong, is suitable for comparative genomics. The aims were to construct a genetic linkage map of rice bean, to identify the genomic regions associated with domestication in rice bean, and to compare these regions with those in azuki bean. METHODS A genetic linkage map was constructed by using simple sequence repeat and amplified fragment length polymorphism markers in the BC(1)F(1) population derived from a cross between cultivated and wild rice bean. Using this map, 31 domestication-related traits were dissected into quantitative trait loci (QTLs). The genetic linkage map and QTLs of rice bean were compared with those of azuki bean. KEY RESULTS A total of 326 markers converged into 11 linkage groups (LGs), corresponding to the haploid number of rice bean chromosomes. The domestication-related traits in rice bean associated with a few major QTLs distributed as clusters on LGs 2, 4 and 7. A high level of co-linearity in marker order between the rice bean and azuki bean linkage maps was observed. Major QTLs in rice bean were found on LG4, whereas major QTLs in azuki bean were found on LG9. CONCLUSIONS This is the first report of a genetic linkage map and QTLs for domestication-related traits in rice bean. The inheritance of domestication-related traits was so simple that a few major QTLs explained the phenotypic variation between cultivated and wild rice bean. The high level of genomic synteny between rice bean and azuki bean facilitates QTL comparison between species. These results provide a genetic foundation for improvement of rice bean; interchange of major QTLs between rice bean and azuki bean might be useful for broadening the genetic variation of both species.
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Affiliation(s)
- Takehisa Isemura
- National Institute of Agrobiological Sciences, Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan
| | - Akito Kaga
- National Institute of Agrobiological Sciences, Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan
| | - Norihiko Tomooka
- National Institute of Agrobiological Sciences, Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan
- For correspondence. E-mail
| | - Takehiko Shimizu
- Institute of Society for Techno-Innovation of Agriculture, Forestry and Fisheries, Kamiyokoba Ippaizuka 446-1, Tsukuba, Ibaraki 305-0854, Japan
| | - Duncan Alexander Vaughan
- National Institute of Agrobiological Sciences, Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan
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