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Uttam V, Vohra V, Chhotaray S, Santhosh A, Diwakar V, Patel V, Gahlyan RK. Exome-wide comparative analyses revealed differentiating genomic regions for performance traits in Indian native buffaloes. Anim Biotechnol 2024; 35:2277376. [PMID: 37934017 DOI: 10.1080/10495398.2023.2277376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
In India, 20 breeds of buffalo have been identified and registered, yet limited studies have been conducted to explore the performance potential of these breeds, especially in the Indian native breeds. This study is a maiden attempt to delineate the important variants and unique genes through exome sequencing for milk yield, milk composition, fertility, and adaptation traits in Indian local breeds of buffalo. In the present study, whole exome sequencing was performed on Chhattisgarhi (n = 3), Chilika (n = 4), Gojri (n = 3), and Murrah (n = 4) buffalo breeds and after stringent quality control, 4333, 6829, 4130, and 4854 InDels were revealed, respectively. Exome-wide FST along 100-kb sliding windows detected 27, 98, 38, and 35 outlier windows in Chhattisgarhi, Chilika, Gojri, and Murrah, respectively. The comparative exome analysis of InDels and subsequent gene ontology revealed unique breed specific genes for milk yield (CAMSAP3), milk composition (CLCN1, NUDT3), fertility (PTGER3) and adaptation (KCNA3, TH) traits. Study provides insight into mechanism of how these breeds have evolved under natural selection, the impact of these events on their respective genomes, and their importance in maintaining purity of these breeds for the traits under study. Additionally, this result will underwrite to the genetic acquaintance of these breeds for breeding application, and in understanding of evolution of these Indian local breeds.
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Affiliation(s)
- Vishakha Uttam
- Animal Genetics & Breeding Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India
| | - Vikas Vohra
- Animal Genetics & Breeding Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India
| | - Supriya Chhotaray
- Animal Genetics & Breeding Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India
| | - Ameya Santhosh
- Animal Genetics & Breeding Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India
| | - Vikas Diwakar
- Animal Genetics & Breeding Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India
| | - Vaibhav Patel
- Animal Genetics & Breeding Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India
| | - Rajesh Kumar Gahlyan
- Animal Genetics & Breeding Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India
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Weldemichael MY, Gebremedhn HM. QTL mapping in sesame (Sesamum indicum L.): A review. J Biotechnol 2023; 376:11-23. [PMID: 37717598 DOI: 10.1016/j.jbiotec.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/08/2023] [Accepted: 09/12/2023] [Indexed: 09/19/2023]
Abstract
Sesame (Sesamum indicum L.) is an important oilseed crop used for food, feed, medicinal, and industrial applications. Inherently low genetic yield potential and susceptibility to biotic and abiotic stresses contribute to low productivity in sesame. Development of stress resistant varieties coupled with high yield is a viable option to raise the genetic potential of sesame. Conventional phenotype-based breeding methods have made an important role in the last couple of decades by developing several sesame varieties with improved quality, yield, and tolerance to biotic and abiotic stresses. However, due to adverse environmental effects, time consuming to develop new variety, and low genetic gain, conventional phenotype-based approach is not adequate to satisfy the rising population growth. In this context, advanced method of genotype selection via modern techniques of biotechnology plays essential roles in reducing the constraints and boosting sesame production to satisfy the huge demand. In line to this, quantitative trait loci (QTL) mapping is considered as a promising method to address the problems of sesame breeding. Previously, huge data have been generated in the practical use of QTL for sesame improvement. Therefore, this paper aims to review recent advances in the area of QTL mapping for yield and yield related traits in sesame for enhancing and sustaining sesame production. In this section, we present an intensive review on the identification and mapping of the most desirable potential candidate genes/QTLs associated with desirable traits. Moreover, this review focuses on the major QTL regions and/or potential candidate genes and associated molecular markers that could provide potential genetic resources for molecular marker-assisted selection and further cloning of functional genes for yield and yield-related traits as well as various biotic and abiotic stress tolerances. Finally, the summarized QTL mapping data shed light on future directions for enhanced sesame breeding programs.
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Affiliation(s)
- Micheale Yifter Weldemichael
- Department of Biotechnology, College of Dryland Agriculture and Natural Resources, Mekelle University, P.O. Box 231, Mekelle, Tigrai, Ethiopia.
| | - Hailay Mehari Gebremedhn
- Department of Biotechnology, College of Dryland Agriculture and Natural Resources, Mekelle University, P.O. Box 231, Mekelle, Tigrai, Ethiopia
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Weldemichael MY, Gebremedhn HM. Omics technologies towards sesame improvement: a review. Mol Biol Rep 2023; 50:6885-6899. [PMID: 37326753 DOI: 10.1007/s11033-023-08551-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 05/26/2023] [Indexed: 06/17/2023]
Abstract
Genetic improvement of sesame (Sesamum indicum L.), one of the most important oilseed crops providing edible oil, proteins, minerals, and vitamins, is important to ensure a balanced diet for the growing world population. Increasing yield, seed protein, oil, minerals, and vitamins is urgently needed to meet the global demand. The production and productivity of sesame is very low due to various biotic and abiotic stresses. Therefore, various efforts have been made to combat these constraints and increase the production and productivity of sesame through conventional breeding. However, less attention has been paid to the genetic improvement of the crop through modern biotechnological methods, leaving it lagging behind other oilseed crops. Recently, however, the scenario has changed as sesame research has entered the era of "omics" and has made significant progress. Therefore, the purpose of this paper is to provide an overview of the progress made by omics research in improving sesame. This review presents a number of efforts that have been made over past decade using omics technologies to improve various traits of sesame, including seed composition, yield, and biotic and abiotic resistant varieties. It summarizes the advances in genetic improvement of sesame using omics technologies, such as germplasm development (web-based functional databases and germplasm resources), gene discovery (molecular markers and genetic linkage map construction), proteomics, transcriptomics, and metabolomics that have been carried out in the last decade. In conclusion, this review highlights future directions that may be important for omics-assisted breeding in sesame genetic improvement.
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Affiliation(s)
- Micheale Yifter Weldemichael
- Department of Biotechnology, College of Dryland Agriculture and Natural Resources, Mekelle University, P.O. Box 231, Mekelle, Tigrai, Ethiopia.
| | - Hailay Mehari Gebremedhn
- Department of Biotechnology, College of Dryland Agriculture and Natural Resources, Mekelle University, P.O. Box 231, Mekelle, Tigrai, Ethiopia
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Maan SS, Brar JS, Mittal A, Gill MIS, Arora NK, Sohi HS, Chhuneja P, Dhillon GS, Singh N, Thakur S. Construction of a genetic linkage map and QTL mapping of fruit quality traits in guava ( Psidium guajava L.). FRONTIERS IN PLANT SCIENCE 2023; 14:1123274. [PMID: 37426984 PMCID: PMC10324979 DOI: 10.3389/fpls.2023.1123274] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 05/08/2023] [Indexed: 07/11/2023]
Abstract
Guava (Psidium guajava L.) is an important fruit crop of the Indian sub-continent, with potential for improvements in quality and yield. The goal of the present study was to construct a genetic linkage map in an intraspecific cross between the elite cultivar 'Allahabad Safeda' and the Purple Guava landrace to identify the genomic regions responsible for important fruit quality traits, viz., total soluble solids, titratable acidity, vitamin C, and sugars. This population was phenotyped in field trials (as a winter crop) for three consecutive years, and showed moderate-to-high values of heterogeneity coefficients along with higher heritability (60.0%-97.0%) and genetic-advance-over-mean values (13.23%-31.17%), suggesting minimal environmental influence on the expression of fruit-quality traits and indicating that these traits can be improved by phenotypic selection methods. Significant correlations and strong associations were also detected among fruit physico-chemical traits in segregating progeny. The constructed linkage map consisted of 195 markers distributed across 11 chromosomes, spanning a length of 1,604.47 cM (average inter-loci distance of 8.80 markers) and with 88.00% coverage of the guava genome. Fifty-eight quantitative trait loci (QTLs) were detected in three environments with best linear unbiased prediction (BLUP) values using the composite interval mapping algorithm of the BIP (biparental populations) module. The QTLs were distributed on seven different chromosomes, explaining 10.95%-17.77% of phenotypic variance, with the highest LOD score being 5.96 for qTSS.AS.pau-6.2. Thirteen QTLs detected across multiple environments with BLUPs indicate stability and utility in a future breeding program for guava. Furthermore, seven QTL clusters with stable or common individual QTLs affecting two or more different traits were located on six linkage groups (LGs), explaining the correlation among fruit-quality traits. Thus, the multiple environmental evaluations conducted here have increased our understanding of the molecular basis of phenotypic variation, providing the basis for future high-resolution fine-mapping and paving the way for marker-assisted breeding of fruit-quality traits.
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Affiliation(s)
| | | | - Amandeep Mittal
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | | | - Naresh Kumar Arora
- Department of Fruit Science, Punjab Agricultural University, Ludhiana, India
| | - Harjot Singh Sohi
- Krishi Vigyan Kendra, Guru Angad Dev Veterinary and Animal Sciences University, Barnala, India
| | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | | | - Navdeep Singh
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Sujata Thakur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
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Okamoto M, Monden Y, Shindo A, Takeuchi T, Endo T, Shigematsu Y, Takasaki K, Fujii H, Shimada T. A target cultivar-specific identification system based on the chromatographic printed array strip method for eight prominent Japanese citrus cultivars. BREEDING SCIENCE 2023; 73:146-157. [PMID: 37404354 PMCID: PMC10316311 DOI: 10.1270/jsbbs.22065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 11/10/2022] [Indexed: 07/06/2023]
Abstract
Citrus is a major cultivated crop in Japan, and new cultivars are of great interest in the Japanese and global market. Recently, the infringement of breeders' rights to citrus cultivars bred in Japan has become a problem related to the agricultural product export strategy promoted by the Japanese government. Cultivar identification systems using DNA markers are an effective tool for protecting breeders' rights. Here, a novel target cultivar-specific identification system using the chromatographic printed array strip method was developed for eight prominent Japanese citrus cultivars. A polymorphic InDel fragment specific to each cultivar was explored through the screening of published citrus InDel markers and next-generation sequencing of retrotransposon libraries. The cultivar-specific DNA marker set for each cultivar comprised 1-3 polymorphic InDel fragments in combination with a PCR-positive DNA marker for the ribulose-1,5-bisphosphate carboxylase/oxygenase large subunit gene. The DNA markers were detected within 3 hours from DNA extraction to the detection by the C-PAS4 membrane stick following multiplex PCR. The developed system is superior as a convenient, rapid, and cost-effective DNA diagnostic method during inspection. The proposed target cultivar-specific identification system is expected to serve as an efficient tool for the injunction of suspicious registered cultivars, contributing to the protection of breeders' rights.
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Affiliation(s)
- Mitsutoshi Okamoto
- Ehime Research Institute of Citrus Fruits, Yoshida, Uwajima, Ehime 799-3742, Japan
| | - Yuki Monden
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushimanaka Kitaku, Okayama, Okayama 700-8530, Japan
| | - Akiko Shindo
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushimanaka Kitaku, Okayama, Okayama 700-8530, Japan
| | | | - Tomoko Endo
- National Agriculture and Food Research Organization Institute of Fruit and Tea Tree Science, Shimizu, Shizuoka 424-0292, Japan
| | - Yukinori Shigematsu
- Ehime Research Institute of Citrus Fruits, Yoshida, Uwajima, Ehime 799-3742, Japan
| | - Kazuto Takasaki
- FASMAC Co., Ltd., 3088 Okada, Atsugi, Kanagawa 243-0021, Japan
| | - Hiroshi Fujii
- National Agriculture and Food Research Organization Institute of Fruit and Tea Tree Science, Shimizu, Shizuoka 424-0292, Japan
| | - Takehiko Shimada
- National Agriculture and Food Research Organization Institute of Fruit and Tea Tree Science, Shimizu, Shizuoka 424-0292, Japan
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Ramesh P, Juturu VN, Yugandhar P, Pedersen S, Hemasundar A, Yolcu S, Chandra Obul Reddy P, Chandra Mohan Reddy CV, Veerabramha Chari P, Mohan R, Chandra Sekhar A. Molecular genetics and phenotypic assessment of foxtail millet ( Setaria italica (L.) P. Beauv.) landraces revealed remarkable variability of morpho-physiological, yield, and yield-related traits. Front Genet 2023; 14:1052575. [PMID: 36760993 PMCID: PMC9905688 DOI: 10.3389/fgene.2023.1052575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 01/09/2023] [Indexed: 01/26/2023] Open
Abstract
Foxtail millet (Setaria italica (L.) P. Beauv.) is highly valued for nutritional traits, stress tolerance and sustainability in resource-poor dryland agriculture. However, the low productivity of this crop in semi-arid regions of Southern India, is further threatened by climate stress. Landraces are valuable genetic resources, regionally adapted in form of novel alleles that are responsible for cope up the adverse conditions used by local farmers. In recent years, there is an erosion of genetic diversity. We have hypothesized that plant genetic resources collected from the semi-arid climatic zone would serve as a source of novel alleles for the development of climate resilience foxtail millet lines with enhanced yield. Keeping in view, there is an urgent need for conservation of genetic resources. To explore the genetic diversity, to identify superior genotypes and novel alleles, we collected a heterogeneous mixture of foxtail millet landraces from farmer fields. In an extensive multi-year study, we developed twenty genetically fixed foxtail millet landraces by single seed descent method. These landraces characterized along with four released cultivars with agro-morphological, physiological, yield and yield-related traits assessed genetic diversity and population structure. The landraces showed significant diversity in all the studied traits. We identified landraces S3G5, Red, Black and S1C1 that showed outstanding grain yield with earlier flowering, and maturity as compared to released cultivars. Diversity analysis using 67 simple sequence repeat microsatellite and other markers detected 127 alleles including 11 rare alleles, averaging 1.89 alleles per locus, expected heterozygosity of 0.26 and an average polymorphism information content of 0.23, collectively indicating a moderate genetic diversity in the landrace populations. Euclidean Ward's clustering, based on the molecular markers, principal coordinate analysis and structure analysis concordantly distinguished the genotypes into two to three sub-populations. A significant phenotypic and genotypic diversity observed in the landraces indicates a diverse gene pool that can be utilized for sustainable foxtail millet crop improvement.
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Affiliation(s)
- Palakurthi Ramesh
- Molecular Genetics and Functional Genomics Laboratory, Department of Biotechnology, School of Life Sciences, Yogi Vemana University, Kadapa, Andhra Pradesh, India
| | - Vijaya Naresh Juturu
- Molecular Genetics and Functional Genomics Laboratory, Department of Biotechnology, School of Life Sciences, Yogi Vemana University, Kadapa, Andhra Pradesh, India
| | - Poli Yugandhar
- Plant Molecular Biology Laboratory, Indian Institute of Rice Research, Hyderabad, Telangana, India
| | - Sydney Pedersen
- Department of Biology, Mercyhurst University, Erie, PA, United States
| | - Alavilli Hemasundar
- Department of Bioresources Engineering, Sejong University, Seoul, South Korea
| | - Seher Yolcu
- Department of Life Sciences, Sogang University, Seoul, South Korea
| | - Puli Chandra Obul Reddy
- Plant Molecular Biology Laboratory, Department of Botany, School of Life Sciences, Yogi Vemana University, Kadapa, Andhra Pradesh, India
| | | | - P. Veerabramha Chari
- Department of Biotechnology, Krishna University, Machilipatnam, Andhra Pradesh, India
| | - Rajinikanth Mohan
- Department of Biology, Mercyhurst University, Erie, PA, United States,*Correspondence: Akila Chandra Sekhar, , ; Rajinikanth Mohan,
| | - Akila Chandra Sekhar
- Molecular Genetics and Functional Genomics Laboratory, Department of Biotechnology, School of Life Sciences, Yogi Vemana University, Kadapa, Andhra Pradesh, India,*Correspondence: Akila Chandra Sekhar, , ; Rajinikanth Mohan,
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Characterisation of the Complete Chloroplast Genomes of Seven Hyacinthus orientalis L. Cultivars: Insights into Cultivar Phylogeny. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8050453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To improve agricultural performance and obtain potential economic benefits, an understanding of phylogenetic relationships of Hyacinthus cultivars is needed. This study aims to revisit the phylogenetic relationships of Hyacinthus cultivars using complete chloroplast genomes. Nine chloroplast genomes were de novo sequenced, assembled and annotated from seven cultivars of Hyacinthus orientalis and two Scilloideae species including Bellevalia paradoxa and Scilla siberica. The chloroplast genomes of Hyacinthus cultivars ranged from 154,458 bp to 154,641 bp, while those of Bellevalia paradoxa and Scilla siberica were 154,020 bp and 154,943 bp, respectively. Each chloroplast genome was annotated with 133 genes, including 87 protein-coding genes, 38 transfer RNA genes and 8 ribosomal RNA genes. Simple sequence repeats AAGC/CTTG and ACTAT/AGTAT were identified only in ‘Eros’, while AAATC/ATTTG were identified in all cultivars except ‘Eros’. Five haplotypes were identified based on 460 variable sites. Combined with six other previously published chloroplast genomes of Scilloideae, a sliding window analysis and a phylogenetic analysis were performed. Divergence hotspots ndhA and trnG-UGC were identified with a nucleotide diversity threshold at 0.04. The phylogenetic positions of Hyacinthus cultivars were different from the previous study using ISSR. Complete chloroplast genomes serve as new evidence in Hyacinthus cultivar phylogeny, contributing to cultivar identification, preservation and breeding.
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Yadav R, Kalia S, Rangan P, Pradheep K, Rao GP, Kaur V, Pandey R, Rai V, Vasimalla CC, Langyan S, Sharma S, Thangavel B, Rana VS, Vishwakarma H, Shah A, Saxena A, Kumar A, Singh K, Siddique KHM. Current Research Trends and Prospects for Yield and Quality Improvement in Sesame, an Important Oilseed Crop. FRONTIERS IN PLANT SCIENCE 2022; 13:863521. [PMID: 35599863 PMCID: PMC9120847 DOI: 10.3389/fpls.2022.863521] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/16/2022] [Indexed: 06/04/2023]
Abstract
Climate change is shifting agricultural production, which could impact the economic and cultural contexts of the oilseed industry, including sesame. Environmental threats (biotic and abiotic stresses) affect sesame production and thus yield (especially oil content). However, few studies have investigated the genetic enhancement, quality improvement, or the underlying mechanisms of stress tolerance in sesame. This study reveals the challenges faced by farmers/researchers growing sesame crops and the potential genetic and genomic resources for addressing the threats, including: (1) developing sesame varieties that tolerate phyllody, root rot disease, and waterlogging; (2) investigating beneficial agro-morphological traits, such as determinate growth, prostrate habit, and delayed response to seed shattering; (3) using wild relatives of sesame for wide hybridization; and (4) advancing existing strategies to maintain sesame production under changing climatic conditions. Future research programs need to add technologies and develop the best research strategies for economic and sustainable development.
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Affiliation(s)
- Rashmi Yadav
- National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | - Sanjay Kalia
- Department of Biotechnology, Ministry of Science and Technology, Government of India, New Delhi, India
| | - Parimalan Rangan
- National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | - K. Pradheep
- National Bureau of Plant Genetic Resources, Thrissur, India
| | - Govind Pratap Rao
- Indian Agricultural Research Institute, Pusa Campus, New Delhi, India
| | - Vikender Kaur
- National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | - Renu Pandey
- Indian Agricultural Research Institute, Pusa Campus, New Delhi, India
| | - Vandna Rai
- National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India
| | | | - Sapna Langyan
- National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | - Sanjula Sharma
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Punjab, India
| | - Boopathi Thangavel
- National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | | | | | - Anshuman Shah
- National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India
| | - Abhishek Saxena
- National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | - Ashok Kumar
- National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
| | - Kuldeep Singh
- International Crops Research Institute for the Semi-Arid Tropics, Hyderabad, India
| | - Kadambot H. M. Siddique
- The UWA School of Agriculture and Environment, The UWA Institute of Agriculture, The University of Western Australia (UWA), Perth, WA, Australia
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Pandey BB, Ratnakumar P, Usha Kiran B, Dudhe MY, Lakshmi GS, Ramesh K, Guhey A. Identifying Traits Associated With Terminal Drought Tolerance in Sesame ( Sesamum indicum L.) Genotypes. FRONTIERS IN PLANT SCIENCE 2021; 12:739896. [PMID: 34956253 PMCID: PMC8709571 DOI: 10.3389/fpls.2021.739896] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 11/08/2021] [Indexed: 06/14/2023]
Abstract
Sesame is predominantly cultivated in rainfed and low fertile lands and is frequently exposed to terminal drought. Sesamum species inhabiting dryland ecosystems adaptively diverge from those inhabiting rainfed habitats, and drought-specific traits have a genetic basis. In sesame, traits associated with drought conditions have not been explored to date, yet studies of these traits are needed given that drought is predicted to become more frequent and severe in many parts of the world because of climate change. Here, 76 accessions from the available Indian core set were used to quantify variation in several traits under irrigated (WW) and terminal drought stress (WS) conditions as well as their association with seed yield over two consecutive years. The range of trait variation among the studied genotypes under WW and WS was significant. Furthermore, the traits associated with seed yield under WW and WS differed. The per se performance of the accessions indicated that the expression of most traits was reduced under WS. The correlation analysis revealed that the number of branches, leaf area (LA), leaves dry weight (LDW), number of capsules plant-1, and harvest index (HI) were positively correlated with seed yield under WW and WS, and total dry matter (TDM), plant stem weight, and canopy temperature (CT) were negatively correlated with seed yield under WW and WS, indicating that smaller and cooler canopy genotypes had higher yields. The genotypes IC-131936, IC-204045, IC-204861, IC-205363, IC-205311, and IC-73576 with the highest seed yields were characterized by low canopy temperature, high relative water content, and high harvest index under WS. Phenotypic and molecular diversity analysis was conducted on genotypes along with checks. Phenotypic diversity was assessed using multivariate analysis, whereas molecular diversity was estimated using simple sequence repeat (SSR) loci to facilitate the use of sesame in breeding and genetic mapping. SSRs showed low allelic variation, as indicated by a low average number of alleles (2.31) per locus, gene diversity (0.25), and polymorphism information content (0.22). Cluster analysis (CA) [neighbor-joining (NJ) tree] revealed three major genotypic groups and structure analysis showed 4 populations. The diverse genotypes identified with promising morpho-physiological traits can be used in breeding programs to develop new varieties.
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Affiliation(s)
- Brij Bihari Pandey
- Indian Council of Agriculture Research (ICAR)-Indian Institute of Oilseeds Research, Hyderabad, India
- Department of Plant Physiology, Indira Gandhi Agricultural University, Raipur, India
| | - P. Ratnakumar
- Indian Council of Agriculture Research (ICAR)-Indian Institute of Oilseeds Research, Hyderabad, India
| | - B. Usha Kiran
- Indian Council of Agriculture Research (ICAR)-Indian Institute of Oilseeds Research, Hyderabad, India
| | - Mangesh Y. Dudhe
- Indian Council of Agriculture Research (ICAR)-Indian Institute of Oilseeds Research, Hyderabad, India
| | - G. Sowjanya Lakshmi
- Indian Council of Agriculture Research (ICAR)-Indian Institute of Oilseeds Research, Hyderabad, India
- Department of Plant Physiology, Indira Gandhi Agricultural University, Raipur, India
| | - Kulasekaran Ramesh
- Indian Council of Agriculture Research (ICAR)-Indian Institute of Oilseeds Research, Hyderabad, India
| | - Arti Guhey
- Department of Plant Physiology, Indira Gandhi Agricultural University, Raipur, India
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10
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Thakur S, Yadav IS, Jindal M, Sharma PK, Dhillon GS, Boora RS, Arora NK, Gill MIS, Chhuneja P, Mittal A. Development of Genome-Wide Functional Markers Using Draft Genome Assembly of Guava ( Psidium guajava L.) cv. Allahabad Safeda to Expedite Molecular Breeding. FRONTIERS IN PLANT SCIENCE 2021; 12:708332. [PMID: 34630458 PMCID: PMC8494772 DOI: 10.3389/fpls.2021.708332] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
Guava (Psidium guajava L.), a rich source of nutrients, is an important tropical and subtropical fruit of the Myrtaceae family and exhibits magnificent diversity. Genetic diversity analysis is the first step toward the identification of parents for hybridization, genetic mapping, and molecular breeding in any crop species. A diversity analysis based on whole-genome functional markers increases the chances of identifying genetic associations with agronomically important traits. Therefore, here, we sequenced the genome of guava cv. Allahabad Safeda on an Illumina platform and generated a draft assembly of ~304 MB. The assembly of the Allahabad Safeda genome constituted >37.95% repeat sequences, gene prediction with RNA-seq data as evidence identified 14,115 genes, and BLAST n/r, Interproscan, PfamScan, BLAST2GO, and KEGG annotated 13,957 genes. A comparative protein transcript analysis of tree species revealed the close relatedness of guava with Eucalyptus. Comparative transcriptomics-based SSR/InDel/SNP-PCR ready genome-wide markers in greenish-yellow skinned and white fleshed-Allahabad Safeda to four contrasting cultivars viz apple-color-skinned and white-fleshed-Lalima, greenish-yellow-skinned and pink-fleshed-Punjab Pink, purple-black-skinned and purple-fleshed-Purple Local and widely used rootstock-Lucknow-49 were developed. The molecular markers developed here revealed a high level of individual heterozygosity within genotypes in 22 phenotypically diverse guava cultivars. Principal coordinate, STRUCTURE clustering, and neighbor-joining-based genetic diversity analysis identified distinct clusters associated with fruit skin and flesh color. The genome sequencing of guava, functional annotation, comparative transcriptomics-based genome-wide markers, and genetic diversity analysis will expand the knowledge of genomes of climacteric fruits, facilitating trait-based molecular breeding and diversifying the nutritional basket.
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Affiliation(s)
- Sujata Thakur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Inderjit Singh Yadav
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Manish Jindal
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Parva Kumar Sharma
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | | | - Rajbir Singh Boora
- Fruit Research Sub-Station, Punjab Agricultural University, Bahadurgarh, India
| | - Naresh Kumar Arora
- Department of Fruit Science, Punjab Agricultural University, Ludhiana, India
| | | | - Parveen Chhuneja
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Amandeep Mittal
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
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11
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Pan G, Li Z, Huang S, Tao J, Shi Y, Chen A, Li J, Tang H, Chang L, Deng Y, Li D, Zhao L. Genome-wide development of insertion-deletion (InDel) markers for Cannabis and its uses in genetic structure analysis of Chinese germplasm and sex-linked marker identification. BMC Genomics 2021; 22:595. [PMID: 34353285 PMCID: PMC8340516 DOI: 10.1186/s12864-021-07883-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 06/28/2021] [Indexed: 12/30/2022] Open
Abstract
Background Cannabis sativa L., a dioecious plant derived from China, demonstrates important medicinal properties and economic value worldwide. Cannabis properties have been usually harnessed depending on the sex of the plant. To analyse the genetic structure of Chinese Cannabis and identify sex-linked makers, genome-wide insertion-deletion (InDel) markers were designed and used. Results In this study, a genome-wide analysis of insertion-deletion (InDel) polymorphisms was performed based on the recent genome sequences. In total, 47,558 InDels were detected between the two varieties, and the length of InDels ranged from 4 bp to 87 bp. The most common InDels were tetranucleotides, followed by pentanucleotides. Chromosome 5 exhibited the highest number of InDels among the Cannabis chromosomes, while chromosome 10 exhibited the lowest number. Additionally, 31,802 non-redundant InDel markers were designed, and 84 primers evenly distributed in the Cannabis genome were chosen for polymorphism analysis. A total of 38 primers exhibited polymorphisms among three accessions, and of the polymorphism primers, 14 biallelic primers were further used to analyse the genetic structure. A total of 39 fragments were detected, and the PIC value ranged from 0.1209 to 0.6351. According to the InDel markers and the flowering time, the 115 Chinese germplasms were divided into two subgroups, mainly composed of cultivars obtained from the northernmost and southernmost regions, respectively. Additional two markers, “Cs-I1–10” and “Cs-I1–15”, were found to amplify two bands (398 bp and 251 bp; 293 bp and 141 bp) in the male plants, while 389-bp or 293-bp bands were amplified in female plants. Using the two markers, the feminized and dioecious varieties could also be distinguished. Conclusion Based on the findings obtained herein, we believe that this study will facilitate the genetic improvement and germplasm conservation of Cannabis in China, and the sex-linked InDel markers will provide accurate sex identification strategies for Cannabis breeding and production. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07883-w.
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Affiliation(s)
- Gen Pan
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China.,Key Laboratory of the Biology and Process of Bast Fiber Crops, Ministry of Agriculture, Changsha, China
| | - Zheng Li
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China
| | - Siqi Huang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China.,Key Laboratory of the Biology and Process of Bast Fiber Crops, Ministry of Agriculture, Changsha, China
| | - Jie Tao
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China
| | - Yaliang Shi
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China
| | - Anguo Chen
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China.,Key Laboratory of the Biology and Process of Bast Fiber Crops, Ministry of Agriculture, Changsha, China
| | - Jianjun Li
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China.,Key Laboratory of the Biology and Process of Bast Fiber Crops, Ministry of Agriculture, Changsha, China
| | - Huijuan Tang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China.,Key Laboratory of the Biology and Process of Bast Fiber Crops, Ministry of Agriculture, Changsha, China
| | - Li Chang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China.,Key Laboratory of the Biology and Process of Bast Fiber Crops, Ministry of Agriculture, Changsha, China
| | - Yong Deng
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China.,Key Laboratory of the Biology and Process of Bast Fiber Crops, Ministry of Agriculture, Changsha, China
| | - Defang Li
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China. .,Key Laboratory of the Biology and Process of Bast Fiber Crops, Ministry of Agriculture, Changsha, China.
| | - Lining Zhao
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, China. .,Key Laboratory of the Biology and Process of Bast Fiber Crops, Ministry of Agriculture, Changsha, China.
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12
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Zhang Y, Peng J, Yuan X, Zhang L, Zhu D, Hong P, Wang J, Liu Q, Liu W. MFCIS: an automatic leaf-based identification pipeline for plant cultivars using deep learning and persistent homology. HORTICULTURE RESEARCH 2021; 8:172. [PMID: 34333519 PMCID: PMC8325680 DOI: 10.1038/s41438-021-00608-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 05/05/2021] [Accepted: 05/20/2021] [Indexed: 06/13/2023]
Abstract
Recognizing plant cultivars reliably and efficiently can benefit plant breeders in terms of property rights protection and innovation of germplasm resources. Although leaf image-based methods have been widely adopted in plant species identification, they seldom have been applied in cultivar identification due to the high similarity of leaves among cultivars. Here, we propose an automatic leaf image-based cultivar identification pipeline called MFCIS (Multi-feature Combined Cultivar Identification System), which combines multiple leaf morphological features collected by persistent homology and a convolutional neural network (CNN). Persistent homology, a multiscale and robust method, was employed to extract the topological signatures of leaf shape, texture, and venation details. A CNN-based algorithm, the Xception network, was fine-tuned for extracting high-level leaf image features. For fruit species, we benchmarked the MFCIS pipeline on a sweet cherry (Prunus avium L.) leaf dataset with >5000 leaf images from 88 varieties or unreleased selections and achieved a mean accuracy of 83.52%. For annual crop species, we applied the MFCIS pipeline to a soybean (Glycine max L. Merr.) leaf dataset with 5000 leaf images of 100 cultivars or elite breeding lines collected at five growth periods. The identification models for each growth period were trained independently, and their results were combined using a score-level fusion strategy. The classification accuracy after score-level fusion was 91.4%, which is much higher than the accuracy when utilizing each growth period independently or mixing all growth periods. To facilitate the adoption of the proposed pipelines, we constructed a user-friendly web service, which is freely available at http://www.mfcis.online .
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Affiliation(s)
- Yanping Zhang
- School of Computer Science and Technology, Wuhan University of Technology, Wuhan, Hubei, China
| | - Jing Peng
- School of Computer Science and Technology, Wuhan University of Technology, Wuhan, Hubei, China
| | - Xiaohui Yuan
- School of Computer Science and Technology, Wuhan University of Technology, Wuhan, Hubei, China
- Chongqing Research Institute, Wuhan University of Technology, Chongqing, China
| | - Lisi Zhang
- Shandong Key Laboratory of Fruit Biotechnology Breeding, Shandong Institute of Pomology, Taian, Shandong, China
| | - Dongzi Zhu
- Shandong Key Laboratory of Fruit Biotechnology Breeding, Shandong Institute of Pomology, Taian, Shandong, China
| | - Po Hong
- Shandong Key Laboratory of Fruit Biotechnology Breeding, Shandong Institute of Pomology, Taian, Shandong, China
| | - Jiawei Wang
- Shandong Key Laboratory of Fruit Biotechnology Breeding, Shandong Institute of Pomology, Taian, Shandong, China
| | - Qingzhong Liu
- Shandong Key Laboratory of Fruit Biotechnology Breeding, Shandong Institute of Pomology, Taian, Shandong, China
| | - Weizhen Liu
- School of Computer Science and Technology, Wuhan University of Technology, Wuhan, Hubei, China.
- Chongqing Research Institute, Wuhan University of Technology, Chongqing, China.
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13
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Insights into molecular structure, genome evolution and phylogenetic implication through mitochondrial genome sequence of Gleditsia sinensis. Sci Rep 2021; 11:14850. [PMID: 34290263 PMCID: PMC8295344 DOI: 10.1038/s41598-021-93480-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 06/23/2021] [Indexed: 11/14/2022] Open
Abstract
Gleditsia sinensis is an endemic species widely distributed in China with high economic and medicinal value. To explore the genomic evolution and phylogenetic relationships of G. sinensis, the complete mitochondrial (mt) genome of G. sinensis was sequenced and assembled, which was firstly reported in Gleditsia. The mt genome was circular and 594,121 bp in length, including 37 protein-coding genes (PCGs), 19 transfer RNA (tRNA) genes and 3 ribosomal RNA (rRNA) genes. The overall base composition of the G. sinensis mt genome was 27.4% for A, 27.4% for T, 22.6% for G, 22.7% for C. The comparative analysis of PCGs in Fabaceae species showed that most of the ribosomal protein genes and succinate dehydrogenase genes were lost. In addition, we found that the rps4 gene was only lost in G. sinensis, whereas it was retained in other Fabaceae species. The phylogenetic analysis based on shared PCGs of 24 species (22 Fabaceae and 2 Solanaceae) showed that G. sinensis is evolutionarily closer to Senna species. In general, this research will provide valuable information for the evolution of G. sinensis and provide insight into the phylogenetic relationships within the family Fabaceae.
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Chen CY, Liu SY, Yan Y, Yin L, DI P, Liu HM, Liu HZ. Candidate genes involved in the biosynthesis of lignan in Schisandra chinensis fruit based on transcriptome and metabolomes analysis. Chin J Nat Med 2021; 18:684-695. [PMID: 32928512 DOI: 10.1016/s1875-5364(20)60007-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Indexed: 10/23/2022]
Abstract
Schisandra chinensis Turcz. (Baill.) is a plant species with fruits that have been well known in Far Eastern medicine for a long time. It has traditionally been used as a stimulating and fortifying agent in cases of physical exhaustion and to inhibit fatigue. The major bioactive compounds found in S. chinensis are lignans with a dibenzocyclooctadiene skeleton, but little is known about their biosynthesis in plants. S. chinensis is the ideal medicinal plant for studying the biosynthesis of lignans, especially the dibenzocyclooctadiene skeleton. Genomic information for this important herbal plant is unavailable. To better understand the lignan biosynthesis pathway, we generated transcriptome sequences from the fruit during ripening and performed de novo sequence assembly, yielding 136 843 unique transcripts with N50 of 1778 bp. Putative functions could be assigned to 41 824 transcripts (51.57%) based on BLAST searches against annotation databases including GO (Gene ontology) and KEGG (Kyoto Encyclopedia of Genes and Genomes). Furthermore, 22 candidate cytochrome P450 genes and 15 candidate dirigent proteins genes that were most likely involved in the lignan biosynthesis pathway were discovered based on transcriptome sequencing of S. chinensis. The genomic data obtained from S. chinensis, especially the identification of putative genes involved in the lignan biosynthesis pathway, will facilitate our understanding of lignan biosynthesis at the molecular level. The lignan metabolite profiles were analyzed by metabolomes, the accumulation patterns of 30 metabolites involved in the lignan pathway were studied. Co-expression network of lignan contents and transcriptional changes showed 355 strong correlations (correlation coefficient, R2 > 0.9) between 21 compounds and 153 transcripts. Furthermore, the comprehensive analysis and characterization of the genes involved in lignan pathways and the metabolite profiles of lignans are expected to provide better insight regarding the diversity of the chemical composition, synthetic characteristics, and regulatory mechanisms of this medical herb.
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Affiliation(s)
- Chun-Yu Chen
- College of life Science, Jilin Agricultural University, Changchun 130118, China.
| | - Shu-Ying Liu
- College of life Science, Jilin Agricultural University, Changchun 130118, China
| | - Yan Yan
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Le Yin
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Peng DI
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Hui-Min Liu
- College of life Science, Jilin Agricultural University, Changchun 130118, China.
| | - Hong-Zhang Liu
- College of life Science, Jilin Agricultural University, Changchun 130118, China.
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15
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Berhe M, Dossa K, You J, Mboup PA, Diallo IN, Diouf D, Zhang X, Wang L. Genome-wide association study and its applications in the non-model crop Sesamum indicum. BMC PLANT BIOLOGY 2021; 21:283. [PMID: 34157965 PMCID: PMC8218510 DOI: 10.1186/s12870-021-03046-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 05/17/2021] [Indexed: 05/05/2023]
Abstract
BACKGROUND Sesame is a rare example of non-model and minor crop for which numerous genetic loci and candidate genes underlying features of interest have been disclosed at relatively high resolution. These progresses have been achieved thanks to the applications of the genome-wide association study (GWAS) approach. GWAS has benefited from the availability of high-quality genomes, re-sequencing data from thousands of genotypes, extensive transcriptome sequencing, development of haplotype map and web-based functional databases in sesame. RESULTS In this paper, we reviewed the GWAS methods, the underlying statistical models and the applications for genetic discovery of important traits in sesame. A novel online database SiGeDiD ( http://sigedid.ucad.sn/ ) has been developed to provide access to all genetic and genomic discoveries through GWAS in sesame. We also tested for the first time, applications of various new GWAS multi-locus models in sesame. CONCLUSIONS Collectively, this work portrays steps and provides guidelines for efficient GWAS implementation in sesame, a non-model crop.
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Affiliation(s)
- Muez Berhe
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, and Rural Affairs, No.2 Xudong 2nd Road, Wuhan, 430062, China
- Humera Agricultural Research Center of Tigray Agricultural Research Institute, Humera, Tigray, Ethiopia
| | - Komivi Dossa
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, and Rural Affairs, No.2 Xudong 2nd Road, Wuhan, 430062, China.
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005 Dakar-Fann, 10700, Dakar, Senegal.
- Laboratory of Genetics, Horticulture and Seed Sciences, Faculty of Agronomic Sciences, University of Abomey-Calavi, 01 BP 526, Cotonou, Republic of Benin.
| | - Jun You
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, and Rural Affairs, No.2 Xudong 2nd Road, Wuhan, 430062, China
| | - Pape Adama Mboup
- Département de Mathématiques et Informatique, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005 Dakar-Fann, 10700, Dakar, Senegal
| | - Idrissa Navel Diallo
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005 Dakar-Fann, 10700, Dakar, Senegal
- Département de Mathématiques et Informatique, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005 Dakar-Fann, 10700, Dakar, Senegal
| | - Diaga Diouf
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005 Dakar-Fann, 10700, Dakar, Senegal
| | - Xiurong Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, and Rural Affairs, No.2 Xudong 2nd Road, Wuhan, 430062, China
| | - Linhai Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, and Rural Affairs, No.2 Xudong 2nd Road, Wuhan, 430062, China.
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16
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Characterization of the Genetic Diversity Present in a Diverse Sesame Landrace Collection Based on Phenotypic Traits and EST-SSR Markers Coupled With an HRM Analysis. PLANTS 2021; 10:plants10040656. [PMID: 33808174 PMCID: PMC8066031 DOI: 10.3390/plants10040656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/23/2021] [Accepted: 03/26/2021] [Indexed: 11/16/2022]
Abstract
A selection of sesame (Sesamum indicum L.) landraces of different eco-geographical origin and breeding history have been characterized using 28 qualitative morpho-physiological descriptors and seven expressed sequence tag-simple sequence repeat (EST-SSR) markers coupled with a high-resolution melting (HRM) analysis. The most variable qualitative traits that could efficiently discriminate landraces, as revealed by the correlation analyses, were the plant growth type and position of the branches, leaf blade width, stem pubescence, flowering initiation, capsule traits and seed coat texture. The agglomerative hierarchical clustering analysis based on a dissimilarity matrix highlighted three main groups among the sesame landraces. An EST-SSR marker analysis revealed an average polymorphism information content (PIC) value of 0.82, which indicated that the selected markers were highly polymorphic. A principal coordinate analysis and dendrogram reconstruction based on the molecular data classified the sesame genotypes into four major clades. Both the morpho-physiological and molecular analyses showed that landraces from the same geographical origin were not always grouped in the same cluster, forming heterotic groups; however, clustering patterns were observed for the Greek landraces. The selective breeding of such traits could be employed to unlock the bottleneck of local phenotypic diversity and create new cultivars with desirable traits.
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17
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Mangat PK, Gannaban RB, Singleton JJ, Angeles-Shim RB. Development of a PCR-based, genetic marker resource for the tomato-like nightshade relative, Solanum lycopersicoides using whole genome sequence analysis. PLoS One 2020; 15:e0242882. [PMID: 33227039 PMCID: PMC7682897 DOI: 10.1371/journal.pone.0242882] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/10/2020] [Indexed: 11/23/2022] Open
Abstract
Solanum lycopersicoides is a wild nightshade relative of tomato with known resistance to a wide range of pests and pathogens, as well as tolerance to cold, drought and salt stress. To effectively utilize S. lycopersicoides as a genetic resource in breeding for tomato improvement, the underlying basis of observable traits in the species needs to be understood. Molecular markers are important tools that can unlock the genetic underpinnings of phenotypic variation in wild crop relatives. Unfortunately, DNA markers that are specific to S. lycopersicoides are limited in number, distribution and polymorphism rate. In this study, we developed a suite of S. lycopersicoides-specific SSR and indel markers by sequencing, building and analyzing a draft assembly of the wild nightshade genome. Mapping of a total of 1.45 Gb of S. lycopersicoides contigs against the tomato reference genome assembled a moderate number of contiguous reads into longer scaffolds. Interrogation of the obtained draft yielded SSR information for more than 55,000 loci in S. lycopersicoides for which more than 35,000 primers pairs were designed. Additionally, indel markers were developed based on sequence alignments between S. lycopersicoides and tomato. Synthesis and experimental validation of 345 primer sets resulted in the amplification of single and multilocus targets in S. lycopersicoides and polymorphic loci between S. lycopersicoides and tomato. Cross-species amplification of the 345 markers in tomato, eggplant, silverleaf nightshade and pepper resulted in varying degrees of transferability that ranged from 55 to 83%. The markers reported in this study significantly expands the genetic marker resource for S. lycopersicoides, as well as for related Solanum spp. for applications in genetics and breeding studies.
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Affiliation(s)
- Puneet Kaur Mangat
- Department of Plant and Soil Science, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, Texas, United States of America
| | - Ritchel B. Gannaban
- Department of Plant and Soil Science, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, Texas, United States of America
| | - Joshua J. Singleton
- Department of Plant and Soil Science, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, Texas, United States of America
| | - Rosalyn B. Angeles-Shim
- Department of Plant and Soil Science, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock, Texas, United States of America
- * E-mail:
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18
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Genome-Wide Discovery of InDel Markers in Sesame ( Sesamum indicum L.) Using ddRADSeq. PLANTS 2020; 9:plants9101262. [PMID: 32987937 PMCID: PMC7599716 DOI: 10.3390/plants9101262] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 09/22/2020] [Accepted: 09/22/2020] [Indexed: 01/15/2023]
Abstract
The development and validation of different types of molecular markers is crucial to conducting marker-assisted sesame breeding. Insertion-deletion (InDel) markers are highly polymorphic and suitable for low-cost gel-based genotyping. From this perspective, this study aimed to discover and develop InDel markers through bioinformatic analysis of double digest restriction site-associated DNA sequencing (ddRADSeq) data from 95 accessions belonging to the Mediterranean sesame core collection. Bioinformatic analysis indicated the presence of 7477 InDel positions genome wide. Deletions accounted for 61% of the InDels and short deletions (1-2 bp) were the most abundant type (94.9%). On average, InDels of at least 2 bp in length had a frequency of 2.99 InDels/Mb. The 86 InDel sites having length ≥8 bp were detected in genome-wide analysis. These regions can be used for the development of InDel markers considering low-cost genotyping with agarose gels. In order to validate these InDels, a total of 38 InDel regions were selected and primers were successfully amplified. About 13% of these InDels were in the coding sequences (CDSs) and in the 3'- and 5'- untranslated regions (UTRs). Furthermore, the efficiencies of these 16 InDel markers were assessed on 32 sesame accessions. The polymorphic information content (PIC) of these 16 markers ranged from 0.06 to 0.62 (average: 0.33). These results demonstrated the success of InDel identification and marker development for sesame with the use of ddRADSeq data. These agarose-resolvable InDel markers are expected to be useful for sesame breeders.
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Lin E, Zhuang H, Yu J, Liu X, Huang H, Zhu M, Tong Z. Genome survey of Chinese fir (Cunninghamia lanceolata): Identification of genomic SSRs and demonstration of their utility in genetic diversity analysis. Sci Rep 2020; 10:4698. [PMID: 32170167 PMCID: PMC7070021 DOI: 10.1038/s41598-020-61611-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 02/27/2020] [Indexed: 12/22/2022] Open
Abstract
Chinese fir (Cunninghamia lanceolata) is an important coniferous species that accounts for 20–30% of the total commercial timber production in China. Though traditional breeding of Chinese fir has achieved remarkable success, molecular-assisted breeding has made little progress due to limited availability of genomic information. In this study, a survey of Chinese fir genome was performed using the Illumina HiSeq Xten sequencing platform. K-mer analysis indicated that Chinese fir has a large genome of approximately 11.6 Gb with 74.89% repetitive elements and is highly heterozygous. Meanwhile, its genome size was estimated to be 13.2 Gb using flow cytometry. A total of 778.02 Gb clean reads were assembled into 10,982,272 scaffolds with an N50 of 1.57 kb. In total, 362,193 SSR loci were detected with a frequency of 13.18 kb. Dinucleotide repeats were the most abundant (up to 73.6% of the total SSRs), followed by trinucleotide and tetranucleotide repeats. Forty-six polymorphic pairs were developed, and 298 alleles were successfully amplified from 199 Chinese fir clones. The average PIC value was 0.53, indicating that the identified genomic SSR (gSSR) markers have a high degree of polymorphism. In addition, these breeding resources were divided into three groups, and a limited gene flow existed among these inferred groups.
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Affiliation(s)
- Erpei Lin
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A & F University, Lin'an, Hangzhou, 311300, Zhejiang, China
| | - Hebi Zhuang
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A & F University, Lin'an, Hangzhou, 311300, Zhejiang, China
| | - Jinjian Yu
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A & F University, Lin'an, Hangzhou, 311300, Zhejiang, China
| | - Xueyu Liu
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A & F University, Lin'an, Hangzhou, 311300, Zhejiang, China
| | - Huahong Huang
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A & F University, Lin'an, Hangzhou, 311300, Zhejiang, China.
| | - Muyuan Zhu
- Key Laboratory for Cell and Gene Engineering of Zhejiang Province, Institute of Genetics, College of Life Sciences, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Zaikang Tong
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A & F University, Lin'an, Hangzhou, 311300, Zhejiang, China.
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Du H, Zhang H, Wei L, Li C, Duan Y, Wang H. A high-density genetic map constructed using specific length amplified fragment (SLAF) sequencing and QTL mapping of seed-related traits in sesame (Sesamum indicum L.). BMC PLANT BIOLOGY 2019; 19:588. [PMID: 31881840 PMCID: PMC6935206 DOI: 10.1186/s12870-019-2172-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 11/28/2019] [Indexed: 05/20/2023]
Abstract
BACKGROUND Sesame (Sesamum indicum L., 2n = 2x = 26) is an important oilseed crop with high oil content but small seed size. To reveal the genetic loci of the quantitative seed-related traits, we constructed a high-density single nucleotide polymorphism (SNP) linkage map of an F2 population by using specific length amplified fragment (SLAF) technique and determined the quantitative trait loci (QTLs) of seed-related traits for sesame based on the phenotypes of F3 progeny. RESULTS The genetic map comprised 2159 SNP markers distributed on 13 linkage groups (LGs) and was 2128.51 cM in length, with an average distance of 0.99 cM between adjacent markers. QTL mapping revealed 19 major-effect QTLs with the phenotypic effect (R2) more than 10%, i.e., eight QTLs for seed coat color, nine QTLs for seed size, and two QTLs for 1000-seed weight (TSW), using composite interval mapping method. Particularly, LG04 and LG11 contained collocated QTL regions for the seed coat color and seed size traits, respectively, based on their close or identical locations. In total, 155 candidate genes for seed coat color, 22 for seed size traits, and 54 for TSW were screened and analyzed. CONCLUSIONS This report presents the first QTL mapping of seed-related traits in sesame using an F2 population. The results reveal the location of specific markers associated with seed-related traits in sesame and provide the basis for further seed quality traits research.
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Affiliation(s)
- Hua Du
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002 People’s Republic of China
| | - Haiyang Zhang
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002 People’s Republic of China
| | - Libin Wei
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002 People’s Republic of China
| | - Chun Li
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002 People’s Republic of China
| | - Yinghui Duan
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002 People’s Republic of China
| | - Huili Wang
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002 People’s Republic of China
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Basak M, Uzun B, Yol E. Genetic diversity and population structure of the Mediterranean sesame core collection with use of genome-wide SNPs developed by double digest RAD-Seq. PLoS One 2019; 14:e0223757. [PMID: 31600316 PMCID: PMC6786593 DOI: 10.1371/journal.pone.0223757] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 09/27/2019] [Indexed: 12/15/2022] Open
Abstract
The Mediterranean sesame core collection contains agro-morphologically superior sesame accessions from geographically diverse regions in four continents. In the present investigation, the genetic diversity and population structure of this collection was analyzed with 5292 high-quality SNPs discovered by double-digest restriction site associated DNA (ddRAD) sequencing, a cost-effective and flexible next-generation sequencing method. The genetic distance between pairs of accessions varied from 0.023 to 0.524. The gene diversity was higher in accessions from Asia than from America, Africa, and Europe. The highest genetic differentiation was observed between accessions collected from America and Europe. Structure analysis showed the presence of three subpopulations among the sesame accessions, and only six accessions were placed in an admixture group. Phylogenetic tree and principal coordinate analysis clustered the accessions based on their countries of origin. However, no clear division was evident among the sesame accessions with regard to their continental locations. This result was supported by an AMOVA analysis, which revealed a genetic variation among continental groups of 5.53% of the total variation. The large number of SNPs clearly indicated that the Mediterranean sesame core collection is a highly diverse genetic resource. The collection can be exploited by breeders to select appropriate accessions that will provide high genetic gain in sesame improvement programs. The high-quality SNP data generated here should also be used in genome-wide association studies to explore qualitative trait loci and SNPs related to economically and agronomically important traits in sesame.
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Affiliation(s)
- Merve Basak
- Department of Field Crops, Faculty of Agriculture, Akdeniz University, Antalya, Turkey
| | - Bulent Uzun
- Department of Field Crops, Faculty of Agriculture, Akdeniz University, Antalya, Turkey
| | - Engin Yol
- Department of Field Crops, Faculty of Agriculture, Akdeniz University, Antalya, Turkey
- * E-mail:
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Gull S, Haider Z, Gu H, Raza Khan RA, Miao J, Wenchen T, Uddin S, Ahmad I, Liang G. InDel Marker Based Estimation of Multi-Gene Allele Contribution and Genetic Variations for Grain Size and Weight in Rice ( Oryza sativa L.). Int J Mol Sci 2019; 20:E4824. [PMID: 31569360 PMCID: PMC6801599 DOI: 10.3390/ijms20194824] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 09/24/2019] [Accepted: 09/24/2019] [Indexed: 11/16/2022] Open
Abstract
The market success of any rice cultivar is exceedingly dependent on its grain appearance, as well as its grain yield, which define its demand by consumers as well as growers. The present study was undertaken to explore the contribution of nine major genes, qPE9~1, GW2, SLG7, GW5, GS3, GS7, GW8, GS5, and GS2, in regulating four size and weight related traits, i.e., grain length (GL), grain width (GW), grain thickness (GT), and thousand grain weight (TGW) in 204 diverse rice germplasms using Insertion/Deletion (InDel) markers. The studied germplasm displayed wide-ranging variability in the four studied traits. Except for three genes, all six genes showed considerable association with these traits with varying strengths. Whole germplasm of 204 genotypes could be categorized into three major clusters with different grain sizes and weights that could be utilized in rice breeding programs where grain appearance and weight are under consideration. The study revealed that TGW was 24.9% influenced by GL, 37.4% influenced by GW, and 49.1% influenced by GT. Hence, assuming the trend of trait selection, i.e., GT > GW > GL, for improving TGW in the rice yield enhancement programs. The InDel markers successfully identified a total of 38 alleles, out of which 27 alleles were major and were found in more than 20 genotypes. GL was associated with four genes (GS3, GS7, GW8, and GS2). GT was also found to be regulated by four different genes (GS3, GS7, GW8, and GS2) out of the nine studied genes. GW was found to be under the control of three studied genes (GW5, GW8, and GS2), whereas TGW was found to be under the influence of four genes (SLG7, GW5, GW8, and GS5) in the germplasm under study. The Unweighted Pair Group Method with Arithmetic means (UPGMA) tree based on the studied InDel marker loci segregated the whole germplasm into three distinct clusters with dissimilar grain sizes and weights. A two-dimensional scatter plot constructed using Principal Coordinate Analysis (PCoA) based on InDel markers further separated the 204 rice germplasms into four sub-populations with prominent demarcations of extra-long, long, medium, and short grain type germplasms that can be utilized in breeding programs accordingly. The present study could help rice breeders to select a suitable InDel marker and in formulation of breeding strategies for improving grain appearance, as well as weight, to develop rice varieties to compete international market demands with higher yield returns. This study also confirms the efficient application of InDel markers in studying diverse types of rice germplasm, allelic frequencies, multiple-gene allele contributions, marker-trait associations, and genetic variations that can be explored further.
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Affiliation(s)
- Sadia Gull
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Zulqarnain Haider
- Rice Breeding and Genetics Section, Rice Research Institute, Kala Shah Kaku, Lahore, Pakistan
| | - Houwen Gu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Rana Ahsan Raza Khan
- Rice Breeding and Genetics Section, Rice Research Institute, Kala Shah Kaku, Lahore, Pakistan
| | - Jun Miao
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Tan Wenchen
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China
| | - Saleem Uddin
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, College of Biological Sciences and Technology, Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Tree Breeding , Beijing Forestry University, Beijing 100083, China
| | - Irshad Ahmad
- Joint International Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou 225009, China
| | - Guohua Liang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China.
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Bhattacharjee M, Prakash SH, Roy S, Soumen S, Begum T, Dasgupta T. SSR-based DNA fingerprinting of 18 elite Indian varieties of sesame (Sesamum indicum L.). THE NUCLEUS 2019. [DOI: 10.1007/s13237-019-00290-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Jain A, Roorkiwal M, Kale S, Garg V, Yadala R, Varshney RK. InDel markers: An extended marker resource for molecular breeding in chickpea. PLoS One 2019; 14:e0213999. [PMID: 30883592 PMCID: PMC6422259 DOI: 10.1371/journal.pone.0213999] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 03/05/2019] [Indexed: 12/03/2022] Open
Abstract
Chickpea is one of the most important food legumes that holds the key to meet rising global food and nutritional demand. In order to deploy molecular breeding approaches in crop improvement programs, user friendly and cost effective marker resources remain prerequisite. The advent of next generation sequencing (NGS) technology has resulted in the generation of several thousands of markers as part of several large scale genome sequencing and re-sequencing initiatives. Very recently, PCR based Insertion-deletions (InDels) are becoming a popular gel based genotyping solution because of their co-dominant, inexpensive, and highly polymorphic nature. With an objective to expand marker resources for genomics assisted breeding (GAB) in chickpea, whole genome re-sequencing data generated on five parental lines of one interspecific (ICC 4958 × PI 489777) and two intra-specific (ICC 283 × ICC 8261 and ICC 4958 × ICC 1882) mapping populations, were used for identification of InDels. A total of 231,658 InDels were identified using Dindel software with default parameters. Further, a total of 8,307 InDels with ≥20 bp size were selected for development of gel based markers, of which primers could be designed for 7,523 (90.56%) markers. On average, markers appeared at a frequency of 1,038 InDels/LG with a maximum number of markers on CaLG04 (1,952 InDels) and minimum on CaLG08 (360 InDels). In order to validate these InDels, a total of 423 primer pairs were randomly selected and tested on the selected parental lines. A high amplification rate of 80% was observed ranging from 46.06 to 58.01% polymorphism rate across parents on 3% agarose gel. This study clearly reflects the usefulness of available sequence data for the development of genome-wide InDels in chickpea that can further contribute and accelerate a wide range of genetic and molecular breeding activities in chickpea.
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Affiliation(s)
- Ankit Jain
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Manish Roorkiwal
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
- * E-mail: (RKV); (MR)
| | - Sandip Kale
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
- Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Gatersleben, Germany
| | - Vanika Garg
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Ramakrishna Yadala
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Rajeev K. Varshney
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
- * E-mail: (RKV); (MR)
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Alam CM, Iqbal A, Sharma A, Schulman AH, Ali S. Microsatellite Diversity, Complexity, and Host Range of Mycobacteriophage Genomes of the Siphoviridae Family. Front Genet 2019; 10:207. [PMID: 30923537 PMCID: PMC6426759 DOI: 10.3389/fgene.2019.00207] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 02/26/2019] [Indexed: 01/21/2023] Open
Abstract
The incidence, distribution, and variation of simple sequence repeats (SSRs) in viruses is instrumental in understanding the functional and evolutionary aspects of repeat sequences. Full-length genome sequences retrieved from NCBI were used for extraction and analysis of repeat sequences using IMEx software. We have also developed two MATLAB-based tools for extraction of gene locations from GenBank in tabular format and simulation of this data with SSR incidence data. Present study encompassing 147 Mycobacteriophage genomes revealed 25,284 SSRs and 1,127 compound SSRs (cSSRs) through IMEx. Mono- to hexa-nucleotide motifs were present. The SSR count per genome ranged from 78 (M100) to 342 (M58) while cSSRs incidence ranged from 1 (M138) to 17 (M28, M73). Though cSSRs were present in all the genomes, their frequency and SSR to cSSR conversion percentage varied from 1.08 (M138 with 93 SSRs) to 8.33 (M116 with 96 SSRs). In terms of localization, the SSRs were predominantly localized to coding regions (∼78%). Interestingly, genomes of around 50 kb contained a similar number of SSRs/cSSRs to that in a 110 kb genome, suggesting functional relevance for SSRs which was substantiated by variation in motif constitution between species with different host range. The three species with broad host range (M97, M100, M116) have around 90% of their mono-nucleotide repeat motifs composed of G or C and only M16 has both A and T mononucleotide motifs. Around 20% of the di-nucleotide repeat motifs in the genomes exhibiting a broad host range were CT/TC, which were either absent or represented to a much lesser extent in the other genomes.
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Affiliation(s)
- Chaudhary Mashhood Alam
- Luke/BI Plant Genome Dynamics Lab, Institute of Biotechnology and Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland.,Ingenious e-Brain Solutions, Gurugram, India
| | - Asif Iqbal
- PIRO Technologies Private Limited, New Delhi, India
| | - Anjana Sharma
- Department of Biomedical Sciences, SRCASW, University of Delhi, New Delhi, India
| | - Alan H Schulman
- Luke/BI Plant Genome Dynamics Lab, Institute of Biotechnology and Viikki Plant Science Centre, University of Helsinki, Helsinki, Finland.,Natural Resources Institute Finland (Luke), Helsinki, Finland
| | - Safdar Ali
- Department of Biomedical Sciences, SRCASW, University of Delhi, New Delhi, India.,Department of Biological Sciences, Aliah University, Kolkata, India
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Senthilvel S, Ghosh A, Shaik M, Shaw RK, Bagali PG. Development and validation of an SNP genotyping array and construction of a high-density linkage map in castor. Sci Rep 2019; 9:3003. [PMID: 30816245 PMCID: PMC6395776 DOI: 10.1038/s41598-019-39967-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 02/06/2019] [Indexed: 02/01/2023] Open
Abstract
Castor is a commercially important oilseed crop that provides raw materials for several industries. Currently, the availability of genomic resources for castor is very limited. In this study, genome-wide SNPs were discovered in castor via whole-genome sequencing of 14 diverse lines to an average of 34X coverage. A total of 2,179,759 putative SNPs were detected, and a genotyping array was designed with 6,000 high-quality SNPs representing 2,492 scaffolds of the draft castor genome (87.5% genome coverage). The array was validated by genotyping a panel of 314 inbred castor lines, which resulted in 5,025 scorable SNPs with a high call rate (98%) and reproducibility (100%). Using this array, a consensus linkage map consisting of 1,978 SNP loci was constructed with an average inter-marker distance of 0.55 cM. The genome-wide SNP data, the genotyping array and the dense linkage map are valuable genomic tools for promoting high-throughput genomic research and molecular breeding in castor.
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Affiliation(s)
- S Senthilvel
- ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad, 500030, India.
| | - Arpita Ghosh
- Xcelris Labs Ltd., Xcellon building, Navrangpura, Ahmedabad, 380009, India
| | - Mobeen Shaik
- ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad, 500030, India
| | - Ranjan K Shaw
- ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad, 500030, India
| | - Prashanth G Bagali
- Xcelris Labs Ltd., Xcellon building, Navrangpura, Ahmedabad, 380009, India
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27
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Hassan MZ, Rahim MA, Natarajan S, Robin AHK, Kim HT, Park JI, Nou IS. Gummy Stem Blight Resistance in Melon: Inheritance Pattern and Development of Molecular Markers. Int J Mol Sci 2018; 19:E2914. [PMID: 30257511 PMCID: PMC6213961 DOI: 10.3390/ijms19102914] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 09/20/2018] [Accepted: 09/22/2018] [Indexed: 12/13/2022] Open
Abstract
Gummy stem blight (GSB) causes enormous losses to melon (Cucumis melo L.) production worldwide. We aimed to develop useful molecular markers linked to GSB resistance. In this study, 168 F2 plants were obtained from the F₁ population of a cross between the GSB-susceptible 'Cornell ZPPM 339' and the GSB-resistant 'PI482399' lines. A 3:1 ratio of susceptible and resistant genotypes was observed in the F₂ population, indicating control by a single recessive gene. Nucleotide-binding site leucine-rich repeat (NBS-LRR) genes confer resistance against insects and diseases in cucurbits including melon. We cloned and sequenced the TIR-NBS-LRR-type resistance gene MELO3C022157, located on melon chromosome 9, from resistant and susceptible lines. Sequence analysis revealed deletions in the first intron, a 2-bp frameshift deletion from the second exon and a 7-bp insertion in the 4th exon of the resistant line. We developed two insertion/deletion (InDel) markers, GSB9-kh-1 and GSB9-kh-2, which were found in the first intron of MELO3C022157 linked to GSB resistance. We validated these markers with the F₂ population and inbred lines. These InDels may be used to facilitate marker-assisted selection of GSB resistance in melon. However, functional analysis of overexpressing and/or knock-down mutants is needed to confirm the frameshift mutation.
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Affiliation(s)
- Md Zahid Hassan
- Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam 57922, Korea.
| | - Md Abdur Rahim
- Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam 57922, Korea.
| | - Sathishkumar Natarajan
- Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam 57922, Korea.
| | - Arif Hasan Khan Robin
- Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam 57922, Korea.
| | - Hoy-Taek Kim
- Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam 57922, Korea.
| | - Jong-In Park
- Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam 57922, Korea.
| | - Ill-Sup Nou
- Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam 57922, Korea.
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Liu H, Zhou F, Zhou T, Yang Y, Zhao Y. Cytological characterization and molecular mapping of a novel recessive genic male sterility in sesame (Sesamum indicum L.). PLoS One 2018; 13:e0204034. [PMID: 30235259 PMCID: PMC6147451 DOI: 10.1371/journal.pone.0204034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 09/02/2018] [Indexed: 11/18/2022] Open
Abstract
Recessive genic male sterility (RGMS) has great potential for F1 hybrid seeds production in sesame (Sesamum indicum L.). However, it is not yet widely used in practice due to poor understanding of the underlying mechanism in RGMS. Previously, we have developed a novel sesame RGMS line (D248A) controlled by a single recessive gene. To elucidate its cytological mechanism, histological observations were carried out in sterile and fertile buds. The results indicated that abnormality in D248A began at microspore mother cell stage and persisted until microspore stage. The microsporocytes had less cytoplasm and no obvious nucleus. Normal meiosis failed in microspore mother cells. Cytoplasm condensation and vacuolation frequently occurred in tetrads, leading to the production of crumpled and abortive microspores. To develop molecular markers for breeding of hybrid lines, InDel and SSR markers were analyzed in a fertility segregating NIL population constructed by sib-mating D248A with D248B. Five markers were identified for the male sterile gene (Ms), with a respective genetic distance of 1.47 and 5.17 cM for the two closest markers (SB2993 and LG1-170) on both sides. The Ms gene was further anchored into a 108-kb interval in the downstream of chromosome 1, within which 15 genes were predicted and four were likely to be responsible for male sterility. These findings provide a deeper understanding of the mechanism underlying RGMS in sesame.
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Affiliation(s)
- Hongyan Liu
- Key Laboratory of Oil Crops Biology and Genetic Improvement, Ministry of Agriculture, Oil Crops Research Institute, CAAS, Wuhan, China
| | - Fang Zhou
- Key Laboratory of Oil Crops Biology and Genetic Improvement, Ministry of Agriculture, Oil Crops Research Institute, CAAS, Wuhan, China
| | - Ting Zhou
- Key Laboratory of Oil Crops Biology and Genetic Improvement, Ministry of Agriculture, Oil Crops Research Institute, CAAS, Wuhan, China
| | - Yuanxiao Yang
- Key Laboratory of Oil Crops Biology and Genetic Improvement, Ministry of Agriculture, Oil Crops Research Institute, CAAS, Wuhan, China
| | - Yingzhong Zhao
- Key Laboratory of Oil Crops Biology and Genetic Improvement, Ministry of Agriculture, Oil Crops Research Institute, CAAS, Wuhan, China
- * E-mail:
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He J, Wang S, Li J, Fan Z, Liu X, Wang Y. Genetic differentiation and spatiotemporal history of diploidy and tetraploidy of Clintonia udensis. Ecol Evol 2017; 7:10243-10251. [PMID: 29238551 PMCID: PMC5723609 DOI: 10.1002/ece3.3510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 08/16/2017] [Accepted: 09/20/2017] [Indexed: 11/21/2022] Open
Abstract
Polyploidy is an important factor shaping the geographic range of a species. Clintonia udensis (Clintonia) is a primary perennial herb widely distributed in China with two karyotypic characteristics—diploid and tetraploid and thereby used to understand the ploidy and distribution. This study unraveled the patterns of genetic variation and spatiotemporal history among the cytotypes of C. udensis using simple sequence repeat or microsatellites. The results showed that the diploids and tetraploids showed the medium level of genetic differentiation; tetraploid was slightly lower than diploid in genetic diversity; recurrent polyploidization seems to have opened new possibilities for the local genotype; the spatiotemporal history of C. udensis allows tracing the interplay of polyploidy evolution; isolated and different ecological surroundings could act as evolutionary capacitors, preserve distinct karyological, and genetic diversity. The approaches of integrating genetic differentiation and spatiotemporal history of diploidy and tetraploidy of Clintonia udens would possibly provide a powerful way to understand the ploidy and plant distribution and undertaken in similar studies in other plant species simultaneously contained the diploid and tetraploid.
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Affiliation(s)
- Juan He
- College of Life Science Shanxi Normal University Linfen China
| | - Shengnan Wang
- College of Animal Science and Technology Nanjing Agricultural University Nanjing China
| | - Jia Li
- College of Life Science Shanxi Normal University Linfen China
| | - Zelu Fan
- College of Life Science Shanxi Normal University Linfen China
| | - Xin Liu
- College of Life Science Shanxi Normal University Linfen China
| | - Yiling Wang
- College of Life Science Shanxi Normal University Linfen China
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30
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Dossa K, Yu J, Liao B, Cisse N, Zhang X. Development of Highly Informative Genome-Wide Single Sequence Repeat Markers for Breeding Applications in Sesame and Construction of a Web Resource: SisatBase. FRONTIERS IN PLANT SCIENCE 2017; 8:1470. [PMID: 28878802 PMCID: PMC5572293 DOI: 10.3389/fpls.2017.01470] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 08/08/2017] [Indexed: 05/21/2023]
Abstract
The sequencing of the full nuclear genome of sesame (Sesamum indicum L.) provides the platform for functional analyses of genome components and their application in breeding programs. Although the importance of microsatellites markers or simple sequence repeats (SSR) in crop genotyping, genetics, and breeding applications is well established, only a little information exist concerning SSRs at the whole genome level in sesame. In addition, SSRs represent a suitable marker type for sesame molecular breeding in developing countries where it is mainly grown. In this study, we identified 138,194 genome-wide SSRs of which 76.5% were physically mapped onto the 13 pseudo-chromosomes. Among these SSRs, up to three primers pairs were supplied for 101,930 SSRs and used to in silico amplify the reference genome together with two newly sequenced sesame accessions. A total of 79,957 SSRs (78%) were polymorphic between the three genomes thereby suggesting their promising use in different genomics-assisted breeding applications. From these polymorphic SSRs, 23 were selected and validated to have high polymorphic potential in 48 sesame accessions from different growing areas of Africa. Furthermore, we have developed an online user-friendly database, SisatBase (http://www.sesame-bioinfo.org/SisatBase/), which provides free access to SSRs data as well as an integrated platform for functional analyses. Altogether, the reference SSR and SisatBase would serve as useful resources for genetic assessment, genomic studies, and breeding advancement in sesame, especially in developing countries.
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Affiliation(s)
- Komivi Dossa
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
- Centre d’Etudes Régional pour l’Amélioration de l’Adaptation à la SécheresseThiès, Senegal
| | - Jingyin Yu
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
| | - Boshou Liao
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
| | - Ndiaga Cisse
- Centre d’Etudes Régional pour l’Amélioration de l’Adaptation à la SécheresseThiès, Senegal
| | - Xiurong Zhang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
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Chander S, Bhat KV, Kumari R, Sen S, Gaikwad AB, Gowda MVC, Dikshit N. Analysis of spatial distribution of genetic diversity and validation of Indian foxtail millet core collection. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2017; 23:663-673. [PMID: 28878504 PMCID: PMC5567709 DOI: 10.1007/s12298-017-0448-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/02/2017] [Accepted: 05/12/2017] [Indexed: 05/28/2023]
Abstract
Foxtail millet [Setaria italica (L.) P. Beauv.] is an important small millet, grown as a short duration, drought tolerant crop across the world. This crop can be grown on wide ranges of soil conditions and has an immense potential for food and fodder in rainfed and arid regions of the India. In the present study, 31 primer pairs (27 SSR and 4 EST-SSR) were used to analyse the genetic diversity in 223 core collection accessions. Analysis resulted in detection of a total of 136 alleles with an average of 4.38 alleles per locus. Among these 136 alleles, 22 were rare, 70 were common and 44 were frequent. The PIC value ranged from 0.01 to 0.86 with an average of 0.31. The average number of observed alleles ranged from 2.0 (northern hills of India accessions) to 4.06 (exotic) with an average of 2.72. The mean Shannon's Information Index ranged from 0.44 (northern hills of India) to 0.69 (exotic) with an average of 0.52. Pair-wise Fst values indicated little to moderate genetic differentiation among the group of accessions. UPGMA clustering grouped the accessions into two major groups while analysis for population substructure indicated presence of four subpopulations. However there was no statistically well supported grouping of the accessions based on eco-geographic specificities. The core collection designated here represented substantial genetic diversity at molecular level, hence may be a good source of diversity for use in foxtail improvement programs in the region.
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Affiliation(s)
| | - K. V. Bhat
- ICAR-National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, 110 012 India
| | - Ratna Kumari
- ICAR-National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, 110 012 India
| | - Sanjay Sen
- ICAR-National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, 110 012 India
| | - A. B. Gaikwad
- ICAR-National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, 110 012 India
| | - M. V. C. Gowda
- All India Co-ordinated Small Millets Improvement Project, GKVK, Bengaluru, 560 065 India
| | - N. Dikshit
- ICAR-National Bureau of Plant Genetic Resources, Regional Station, Akola, 444 104 India
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Dossa K, Diouf D, Wang L, Wei X, Zhang Y, Niang M, Fonceka D, Yu J, Mmadi MA, Yehouessi LW, Liao B, Zhang X, Cisse N. The Emerging Oilseed Crop Sesamum indicum Enters the "Omics" Era. FRONTIERS IN PLANT SCIENCE 2017; 8:1154. [PMID: 28713412 PMCID: PMC5492763 DOI: 10.3389/fpls.2017.01154] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 06/15/2017] [Indexed: 05/18/2023]
Abstract
Sesame (Sesamum indicum L.) is one of the oldest oilseed crops widely grown in Africa and Asia for its high-quality nutritional seeds. It is well adapted to harsh environments and constitutes an alternative cash crop for smallholders in developing countries. Despite its economic and nutritional importance, sesame is considered as an orphan crop because it has received very little attention from science. As a consequence, it lags behind the other major oil crops as far as genetic improvement is concerned. In recent years, the scenario has considerably changed with the decoding of the sesame nuclear genome leading to the development of various genomic resources including molecular markers, comprehensive genetic maps, high-quality transcriptome assemblies, web-based functional databases and diverse daft genome sequences. The availability of these tools in association with the discovery of candidate genes and quantitative trait locis for key agronomic traits including high oil content and quality, waterlogging and drought tolerance, disease resistance, cytoplasmic male sterility, high yield, pave the way to the development of some new strategies for sesame genetic improvement. As a result, sesame has graduated from an "orphan crop" to a "genomic resource-rich crop." With the limited research teams working on sesame worldwide, more synergic efforts are needed to integrate these resources in sesame breeding for productivity upsurge, ensuring food security and improved livelihood in developing countries. This review retraces the evolution of sesame research by highlighting the recent advances in the "Omics" area and also critically discusses the future prospects for a further genetic improvement and a better expansion of this crop.
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Affiliation(s)
- Komivi Dossa
- Centre d’Etudes Régional Pour l’Amélioration de l’Adaptation à la SécheresseThiès, Sénégal
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta DiopDakar, Sénégal
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
| | - Diaga Diouf
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta DiopDakar, Sénégal
| | - Linhai Wang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
| | - Xin Wei
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
| | - Yanxin Zhang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
| | - Mareme Niang
- Centre d’Etudes Régional Pour l’Amélioration de l’Adaptation à la SécheresseThiès, Sénégal
| | - Daniel Fonceka
- Centre d’Etudes Régional Pour l’Amélioration de l’Adaptation à la SécheresseThiès, Sénégal
- Centre de Coopération Internationale en Recherche Agronomique Pour le Développement, UMR AGAPMontpellier, France
| | - Jingyin Yu
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
| | - Marie A. Mmadi
- Centre d’Etudes Régional Pour l’Amélioration de l’Adaptation à la SécheresseThiès, Sénégal
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta DiopDakar, Sénégal
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
| | - Louis W. Yehouessi
- Centre d’Etudes Régional Pour l’Amélioration de l’Adaptation à la SécheresseThiès, Sénégal
| | - Boshou Liao
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
| | - Xiurong Zhang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Ministry of AgricultureWuhan, China
| | - Ndiaga Cisse
- Centre d’Etudes Régional Pour l’Amélioration de l’Adaptation à la SécheresseThiès, Sénégal
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Sohn HB, Kim SJ, Hwang TY, Park HM, Lee YY, Markkandan K, Lee D, Lee S, Hong SY, Song YH, Koo BC, Kim YH. Barcode System for Genetic Identification of Soybean [ Glycine max (L.) Merrill] Cultivars Using InDel Markers Specific to Dense Variation Blocks. FRONTIERS IN PLANT SCIENCE 2017; 8:520. [PMID: 28443113 PMCID: PMC5385371 DOI: 10.3389/fpls.2017.00520] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 03/23/2017] [Indexed: 05/29/2023]
Abstract
For genetic identification of soybean [Glycine max (L.) Merrill] cultivars, insertions/deletions (InDel) markers have been preferred currently because they are easy to use, co-dominant and relatively abundant. Despite their biological importance, the investigation of InDels with proven quality and reproducibility has been limited. In this study, we described soybean barcode system approach based on InDel makers, each of which is specific to a dense variation block (dVB) with non-random recombination due to many variations. Firstly, 2,274 VBs were mined by analyzing whole genome data in six soybean cultivars (Backun, Sinpaldal 2, Shingi, Daepoong, Hwangkeum, and Williams 82) for transferability to dVB-specific InDel markers. Secondly, 73,327 putative InDels in the dVB regions were identified for the development of soybean barcode system. Among them, 202 dVB-specific InDels from all soybean cultivars were selected by gel electrophoresis, which were converted as 2D barcode types according to comparing amplicon polymorphisms in the five cultivars to the reference cultivar. Finally, the polymorphism of the markers were assessed in 147 soybean cultivars, and the soybean barcode system that allows a clear distinction among soybean cultivars is also detailed. In addition, the changing of the dVBs in a chromosomal level can be quickly identified due to investigation of the reshuffling pattern of the soybean cultivars with 27 maker sets. Especially, a backcross-inbred offspring, "Singang" and a recurrent parent, "Sowon" were identified by using the 27 InDel markers. These results indicate that the soybean barcode system enables not only the minimal use of molecular markers but also comparing the data from different sources due to no need of exploiting allele binning in new varieties.
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Affiliation(s)
- Hwang-Bae Sohn
- Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration (RDA)Gangwon-do, South Korea
| | - Su-Jeong Kim
- Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration (RDA)Gangwon-do, South Korea
| | - Tae-Young Hwang
- Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration (RDA)Chungcheongnam-Do, South Korea
| | - Hyang-Mi Park
- Headquarters, National Institute of Crop Science, Rural Development Administration (RDA)Jeolabuk-Do, South Korea
| | - Yu-Young Lee
- Department of Central Area, National Institute of Crop Science, Rural Development Administration (RDA)Gyeonggi-Do, South Korea
| | | | - Dongwoo Lee
- TheragenEtex Bio Institute, TheragenEtex Inc.Gyeonggi-Do, South Korea
| | - Sunghoon Lee
- EONE-DIAGNOMICS Genome CenterIncheon, South Korea
| | - Su-Young Hong
- Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration (RDA)Gangwon-do, South Korea
| | - Yun-Ho Song
- Gangwondo Agricultural Research and Extension ServicesGangwon-Do, South Korea
| | - Bon-Cheol Koo
- Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration (RDA)Gangwon-do, South Korea
| | - Yul-Ho Kim
- Highland Agriculture Research Institute, National Institute of Crop Science, Rural Development Administration (RDA)Gangwon-do, South Korea
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Cui C, Mei H, Liu Y, Zhang H, Zheng Y. Genetic Diversity, Population Structure, and Linkage Disequilibrium of an Association-Mapping Panel Revealed by Genome-Wide SNP Markers in Sesame. FRONTIERS IN PLANT SCIENCE 2017; 8:1189. [PMID: 28729877 PMCID: PMC5498554 DOI: 10.3389/fpls.2017.01189] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 06/22/2017] [Indexed: 05/11/2023]
Abstract
The characterization of genetic diversity and population structure can be used in tandem to detect reliable phenotype-genotype associations. In the present study, we genotyped a set of 366 sesame germplasm accessions by using 89,924 single-nucleotide polymorphisms (SNPs). The number of SNPs on each chromosome was consistent with the physical length of the respective chromosome, and the average marker density was approximately 2.67 kb/SNP. The genetic diversity analysis showed that the average nucleotide diversity of the panel was 1.1 × 10-3, with averages of 1.0 × 10-4, 2.7 × 10-4, and 3.6 × 10-4 obtained, respectively for three identified subgroups of the panel: Pop 1, Pop 2, and the Mixed. The genetic structure analysis revealed that these sesame germplasm accessions were structured primarily along the basis of their geographic collection, and that an extensive admixture occurred in the panel. The genome-wide linkage disequilibrium (LD) analysis showed that an average LD extended up to ∼99 kb. The genetic diversity and population structure revealed in this study should provide guidance to the future design of association studies and the systematic utilization of the genetic variation characterizing the sesame panel.
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Affiliation(s)
- Chengqi Cui
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cotton Research Institute, Nanjing Agricultural UniversityNanjing, China
| | - Hongxian Mei
- Henan Sesame Research Center, Henan Academy of Agricultural SciencesZhengzhou, China
- Key Laboratory of Oil Crops in Huanghuaihai Plain, Ministry of AgricultureZhengzhou, China
- Henan Provincial Key Laboratory for Oil Crops ImprovementZhengzhou, China
| | - Yanyang Liu
- Henan Sesame Research Center, Henan Academy of Agricultural SciencesZhengzhou, China
- Key Laboratory of Oil Crops in Huanghuaihai Plain, Ministry of AgricultureZhengzhou, China
- Henan Provincial Key Laboratory for Oil Crops ImprovementZhengzhou, China
| | - Haiyang Zhang
- Henan Sesame Research Center, Henan Academy of Agricultural SciencesZhengzhou, China
- Key Laboratory of Oil Crops in Huanghuaihai Plain, Ministry of AgricultureZhengzhou, China
- Henan Provincial Key Laboratory for Oil Crops ImprovementZhengzhou, China
- *Correspondence: Haiyang Zhang, Yongzhan Zheng,
| | - Yongzhan Zheng
- Henan Sesame Research Center, Henan Academy of Agricultural SciencesZhengzhou, China
- Key Laboratory of Oil Crops in Huanghuaihai Plain, Ministry of AgricultureZhengzhou, China
- Henan Provincial Key Laboratory for Oil Crops ImprovementZhengzhou, China
- *Correspondence: Haiyang Zhang, Yongzhan Zheng,
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Zhang H, Miao H, Li C, Wei L, Duan Y, Ma Q, Kong J, Xu F, Chang S. Ultra-dense SNP genetic map construction and identification of SiDt gene controlling the determinate growth habit in Sesamum indicum L. Sci Rep 2016; 6:31556. [PMID: 27527492 PMCID: PMC4985745 DOI: 10.1038/srep31556] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 07/19/2016] [Indexed: 11/13/2022] Open
Abstract
Sesame (Sesamum indicum L.) is an important oilseed crop and has an indeterminate growth habit. Here we resequenced the genomes of the parents and 120 progeny of an F2 population derived from crossing Yuzhi 11 (indeterminate, Dt) and Yuzhi DS899 (determinate, dt1), and constructed an ultra-dense SNP map for sesame comprised of 3,041 bins including 30,193 SNPs in 13 linkage groups (LGs) with an average marker density of 0.10 cM. Results indicated that the same recessive gene controls the determinacy trait in dt1 and a second determinate line, dt2 (08TP092). The QDt1 locus for the determinacy trait was located in the 18.0 cM-19.2 cM interval of LG8. The target SNP, SiDt27-1, and the determinacy gene, DS899s00170.023 (named here as SiDt), were identified in Scaffold 00170 of the Yuzhi 11 reference genome, based on genetic mapping and genomic association analysis. Unlike the G397A SNP change in the dt1 genotype, the SiDt allele in dt2 line was lost from the genome. This example of map-based gene cloning in sesame provides proof-of-concept of the utility of ultra-dense SNP maps for accurate genome research in sesame.
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Affiliation(s)
- Haiyang Zhang
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, 450002, People’s Republic of China
| | - Hongmei Miao
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, 450002, People’s Republic of China
| | - Chun Li
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, 450002, People’s Republic of China
| | - Libin Wei
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, 450002, People’s Republic of China
| | - Yinghui Duan
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, 450002, People’s Republic of China
| | - Qin Ma
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, 450002, People’s Republic of China
| | - Jingjing Kong
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, 450002, People’s Republic of China
| | - Fangfang Xu
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, 450002, People’s Republic of China
| | - Shuxian Chang
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, 450002, People’s Republic of China
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Dossa K, Wei X, Zhang Y, Fonceka D, Yang W, Diouf D, Liao B, Cissé N, Zhang X. Analysis of Genetic Diversity and Population Structure of Sesame Accessions from Africa and Asia as Major Centers of Its Cultivation. Genes (Basel) 2016; 7:genes7040014. [PMID: 27077887 PMCID: PMC4846844 DOI: 10.3390/genes7040014] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 03/29/2016] [Accepted: 03/30/2016] [Indexed: 11/18/2022] Open
Abstract
Sesame is an important oil crop widely cultivated in Africa and Asia. Understanding the genetic diversity of accessions from these continents is critical to designing breeding methods and for additional collection of sesame germplasm. To determine the genetic diversity in relation to geographical regions, 96 sesame accessions collected from 22 countries distributed over six geographic regions in Africa and Asia were genotyped using 33 polymorphic SSR markers. Large genetic variability was found within the germplasm collection. The total number of alleles was 137, averaging 4.15 alleles per locus. The accessions from Asia displayed more diversity than those from Africa. Accessions from Southern Asia (SAs), Eastern Asia (EAs), and Western Africa (WAf) were highly diversified, while those from Western Asia (WAs), Northern Africa (NAf), and Southeastern Africa (SAf) had the lowest diversity. The analysis of molecular variance revealed that more than 44% of the genetic variance was due to diversity among geographic regions. Five subpopulations, including three in Asia and two in Africa, were cross-identified through phylogenetic, PCA, and STRUCTURE analyses. Most accessions clustered in the same population based on their geographical origins. Our results provide technical guidance for efficient management of sesame genetic resources in breeding programs and further collection of sesame germplasm from these different regions.
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Affiliation(s)
- Komivi Dossa
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, No. 2 Xudong 2nd Road, 430062 Wuhan, Hubei, China.
- Centre d'Etudes Régional pour l'Amélioration de l'Adaptation à la Sécheresse (CERAAS), BP 3320 Route de Khombole, Thiès 21000, Senegal.
| | - Xin Wei
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, No. 2 Xudong 2nd Road, 430062 Wuhan, Hubei, China.
| | - Yanxin Zhang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, No. 2 Xudong 2nd Road, 430062 Wuhan, Hubei, China.
| | - Daniel Fonceka
- Centre d'Etudes Régional pour l'Amélioration de l'Adaptation à la Sécheresse (CERAAS), BP 3320 Route de Khombole, Thiès 21000, Senegal.
- Centre de coopération internationale en recherche agronomique pour le développement (CIRAD), UMR AGAP, F-34398 Montpellier, France.
| | - Wenjuan Yang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, No. 2 Xudong 2nd Road, 430062 Wuhan, Hubei, China.
| | - Diaga Diouf
- Laboratoire Campus de Biotechnologies Végétales, Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop, BP 5005 Dakar-Fann, Dakar 107000, Senegal.
| | - Boshou Liao
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, No. 2 Xudong 2nd Road, 430062 Wuhan, Hubei, China.
| | - Ndiaga Cissé
- Centre d'Etudes Régional pour l'Amélioration de l'Adaptation à la Sécheresse (CERAAS), BP 3320 Route de Khombole, Thiès 21000, Senegal.
| | - Xiurong Zhang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, No. 2 Xudong 2nd Road, 430062 Wuhan, Hubei, China.
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37
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Genetic diversity and population structure of Chinese Lentinula edodes revealed by InDel and SSR markers. Mycol Prog 2016. [DOI: 10.1007/s11557-016-1183-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Generation of Triple-Transgenic Forsythia Cell Cultures as a Platform for the Efficient, Stable, and Sustainable Production of Lignans. PLoS One 2015; 10:e0144519. [PMID: 26641084 PMCID: PMC4671638 DOI: 10.1371/journal.pone.0144519] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 11/19/2015] [Indexed: 11/19/2022] Open
Abstract
Sesamin is a furofuran lignan biosynthesized from the precursor lignan pinoresinol specifically in sesame seeds. This lignan is shown to exhibit anti-hypertensive activity, protect the liver from damages by ethanol and lipid oxidation, and reduce lung tumor growth. Despite rapidly elevating demand, plant sources of lignans are frequently limited because of the high cost of locating and collecting plants. Indeed, the acquisition of sesamin exclusively depends on the conventional extraction of particular Sesamum seeds. In this study, we have created the efficient, stable and sustainable sesamin production system using triple-transgenic Forsythia koreana cell suspension cultures, U18i-CPi-Fk. These transgenic cell cultures were generated by stably introducing an RNAi sequence against the pinoresinol-glucosylating enzyme, UGT71A18, into existing CPi-Fk cells, which had been created by introducing Sesamum indicum sesamin synthase (CYP81Q1) and an RNA interference (RNAi) sequence against pinoresinol/lariciresinol reductase (PLR) into F. koreanna cells. Compared to its transgenic prototype, U18i-CPi-Fk displayed 5-fold higher production of pinoresinol aglycone and 1.4-fold higher production of sesamin, respectively, while the wildtype cannot produce sesamin due to a lack of any intrinsic sesamin synthase. Moreover, red LED irradiation of U18i-CPi-Fk specifically resulted in 3.0-fold greater production in both pinoresinol aglycone and sesamin than production of these lignans under the dark condition, whereas pinoresinol production was decreased in the wildtype under red LED. Moreover, we developed a procedure for sodium alginate-based long-term storage of U18i-CPi-Fk in liquid nitrogen. Production of sesamin in U18i-CPi-Fk re-thawed after six-month cryopreservation was equivalent to that of non-cryopreserved U18i-CPi-Fk. These data warrant on-demand production of sesamin anytime and anywhere. Collectively, the present study provides evidence that U18i-CP-Fk is an unprecedented platform for efficient, stable, and sustainable production of sesamin, and shows that a transgenic and specific light-regulated Forsythia cell-based metabolic engineering is a promising strategy for the acquisition of rare and beneficial lignans.
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Song X, Wei H, Cheng W, Yang S, Zhao Y, Li X, Luo D, Zhang H, Feng X. Development of INDEL Markers for Genetic Mapping Based on Whole Genome Resequencing in Soybean. G3 (BETHESDA, MD.) 2015; 5:2793-9. [PMID: 26483012 PMCID: PMC4683650 DOI: 10.1534/g3.115.022780] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 10/10/2015] [Indexed: 02/04/2023]
Abstract
Soybean [Glycine max (L.) Merrill] is an important crop worldwide. In this study, a Chinese local soybean cultivar, Hedou 12, was resequenced by next generation sequencing technology to develop INsertion/DELetion (INDEL) markers for genetic mapping. 49,276 INDEL polymorphisms and 242,059 single nucleotide polymorphisms were detected between Hedou 12 and the Williams 82 reference sequence. Of these, 243 candidate INDEL markers ranging from 5-50 bp in length were chosen for validation, and 165 (68%) of them revealed polymorphisms between Hedou 12 and Williams 82. The validated INDEL markers were also tested in 12 other soybean cultivars. The number of polymorphisms in the pairwise comparisons of 14 soybean cultivars varied from 27 to 165. To test the utility of these INDEL markers, they were used to perform genetic mapping of a crinkly leaf mutant, and the CRINKLY LEAF locus was successfully mapped to a 360 kb region on chromosome 7. This research shows that high-throughput sequencing technologies can facilitate the development of genome-wide molecular markers for genetic mapping in soybean.
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Affiliation(s)
- Xiaofeng Song
- Key Laboratory of Systems Biology in Universities of Shandong, College of Life Science, Shandong Normal University, 250014 Jinan, China
| | - Haichao Wei
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102 Changchun, China
| | - Wen Cheng
- Key Laboratory of Systems Biology in Universities of Shandong, College of Life Science, Shandong Normal University, 250014 Jinan, China
| | - Suxin Yang
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102 Changchun, China
| | - Yanxiu Zhao
- Key Laboratory of Systems Biology in Universities of Shandong, College of Life Science, Shandong Normal University, 250014 Jinan, China
| | - Xuan Li
- Key Laboratory of Synthetic Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200032, China
| | - Da Luo
- School of Life Sciences, Sun Yat-Sen University, 510275 Guangzhou, China
| | - Hui Zhang
- Key Laboratory of Systems Biology in Universities of Shandong, College of Life Science, Shandong Normal University, 250014 Jinan, China
| | - Xianzhong Feng
- Key Laboratory of Systems Biology in Universities of Shandong, College of Life Science, Shandong Normal University, 250014 Jinan, China Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102 Changchun, China
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Pandey SK, Das A, Rai P, Dasgupta T. Morphological and genetic diversity assessment of sesame (Sesamum indicum L.) accessions differing in origin. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2015; 21:519-29. [PMID: 26600678 PMCID: PMC4646868 DOI: 10.1007/s12298-015-0322-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 09/13/2015] [Accepted: 09/21/2015] [Indexed: 05/22/2023]
Abstract
Sesame is an important ancient oilseed crop of high medicinal value. In the present study, 37 characters including both quantitative and qualitative traits of sixty genotypes were characterized following IPGRI morphological descriptors for sesame. Multivariate analysis was computed to distinguish the varieties into different groups. Though thirty six microsatellite markers including genomic and Est-SSR markers were initially selected, but, finally, the accessions were genotyped by eight polymorphic primers. Altogether, 27 alleles were detected among the 60 genotypes, with an average of 3.37 alleles per locus. The number of alleles ranged from 2 to 6 alleles. From data of microsatellite markers, dissimilarity coefficients between varieties were computed following Jaccard's coefficient method. Principal co-ordinate analysis was used to represent the varieties in bi-directional space. Dendrogram was constructed using NJ method based on dissimilarity matrix. Cluster analysis based on morphological and molecular marker classified sesame genotypes into two major groups. Mantel test showed an insignificant correlation between phenotypic and molecular marker information. The genotypes belonging to the same geographical area did not always occupy the same cluster. The results confirmed that both genetic and phenotypic diversity in a combined way could efficiently evaluate the variation present in different sesame accessions in any breeding program.
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Affiliation(s)
- Sarita K. Pandey
- />Department of Genetics and Plant Breeding, Institute of Agricultural Science, Calcutta University, Kolkata, India
- />International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Telangana India
| | - Arna Das
- />Department of Genetics and Plant Breeding, Institute of Agricultural Science, Calcutta University, Kolkata, India
| | - Pooja Rai
- />Department of Genetics and Plant Breeding, Institute of Agricultural Science, Calcutta University, Kolkata, India
| | - Tapash Dasgupta
- />Department of Genetics and Plant Breeding, Institute of Agricultural Science, Calcutta University, Kolkata, India
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Essences in metabolic engineering of lignan biosynthesis. Metabolites 2015; 5:270-90. [PMID: 25946459 PMCID: PMC4495373 DOI: 10.3390/metabo5020270] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 04/21/2015] [Accepted: 04/27/2015] [Indexed: 11/16/2022] Open
Abstract
Lignans are structurally and functionally diverse phytochemicals biosynthesized in diverse plant species and have received wide attentions as leading compounds of novel drugs for tumor treatment and healthy diets to reduce of the risks of lifestyle-related non-communicable diseases. However, the lineage-specific distribution and the low-amount of production in natural plants, some of which are endangered species, hinder the efficient and stable production of beneficial lignans. Accordingly, the development of new procedures for lignan production is of keen interest. Recent marked advances in the molecular and functional characterization of lignan biosynthetic enzymes and endogenous and exogenous factors for lignan biosynthesis have suggested new methods for the metabolic engineering of lignan biosynthesis cascades leading to the efficient, sustainable, and stable lignan production in plants, including plant cell/organ cultures. Optimization of light conditions, utilization of a wide range of elicitor treatments, and construction of transiently gene-transfected or transgenic lignan-biosynthesizing plants are mainly being attempted. This review will present the basic and latest knowledge regarding metabolic engineering of lignans based on their biosynthetic pathways and biological activities, and the perspectives in lignan production via metabolic engineering.
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Development of chromosome-specific markers with high polymorphism for allotetraploid cotton based on genome-wide characterization of simple sequence repeats in diploid cottons (Gossypium arboreum L. and Gossypium raimondii Ulbrich). BMC Genomics 2015; 16:55. [PMID: 25652321 PMCID: PMC4325953 DOI: 10.1186/s12864-015-1265-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 01/22/2015] [Indexed: 02/04/2023] Open
Abstract
Background Tetraploid cotton contains two sets of homologous chromosomes, the At- and Dt-subgenomes. Consequently, many markers in cotton were mapped to multiple positions during linkage genetic map construction, posing a challenge to anchoring linkage groups and mapping economically-important genes to particular chromosomes. Chromosome-specific markers could solve this problem. Recently, the genomes of two diploid species were sequenced whose progenitors were putative contributors of the At- and Dt-subgenomes to tetraploid cotton. These sequences provide a powerful tool for developing chromosome-specific markers given the high level of synteny among tetraploid and diploid cotton genomes. In this study, simple sequence repeats (SSRs) on each chromosome in the two diploid genomes were characterized. Chromosome-specific SSRs were developed by comparative analysis and proved to distinguish chromosomes. Results A total of 200,744 and 142,409 SSRs were detected on the 13 chromosomes of Gossypium arboreum L. and Gossypium raimondii Ulbrich, respectively. Chromosome-specific SSRs were obtained by comparing SSR flanking sequences from each chromosome with those from the other 25 chromosomes. The average was 7,996 per chromosome. To confirm their chromosome specificity, these SSRs were used to distinguish two homologous chromosomes in tetraploid cotton through linkage group construction. The chromosome-specific SSRs and previously-reported chromosome markers were grouped together, and no marker mapped to another homologous chromosome, proving that the chromosome-specific SSRs were unique and could distinguish homologous chromosomes in tetraploid cotton. Because longer dinucleotide AT-rich repeats were the most polymorphic in previous reports, the SSRs on each chromosome were sorted by motif type and repeat length for convenient selection. The primer sequences of all chromosome-specific SSRs were also made publicly available. Conclusion Chromosome-specific SSRs are efficient tools for chromosome identification by anchoring linkage groups to particular chromosomes during genetic mapping and are especially useful in mapping of qualitative-trait genes or quantitative trait loci with just a few markers. The SSRs reported here will facilitate a number of genetic and genomic studies in cotton, including construction of high-density genetic maps, positional gene cloning, fingerprinting, and genetic diversity and comparative evolutionary analyses among Gossypium species. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1265-2) contains supplementary material, which is available to authorized users.
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Liu L, Dang PM, Chen CY. Development and Utilization of InDel Markers to Identify Peanut (Arachis hypogaea) Disease Resistance. FRONTIERS IN PLANT SCIENCE 2015; 6:988. [PMID: 26617627 PMCID: PMC4643128 DOI: 10.3389/fpls.2015.00988] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 10/29/2015] [Indexed: 05/04/2023]
Abstract
Peanut diseases, such as leaf spot and spotted wilt caused by Tomato Spotted Wilt Virus, can significantly reduce yield and quality. Application of marker assisted plant breeding requires the development and validation of different types of DNA molecular markers. Nearly 10,000 SSR-based molecular markers have been identified by various research groups around the world, but less than 14.5% showed polymorphism in peanut and only 6.4% have been mapped. Low levels of polymorphism limit the application of marker assisted selection (MAS) in peanut breeding programs. Insertion/deletion (InDel) markers have been reported to be more polymorphic than SSRs in some crops. The goals of this study were to identify novel InDel markers and to evaluate the potential use in peanut breeding. Forty-eight InDel markers were developed from conserved sequences of functional genes and tested in a diverse panel of 118 accessions covering six botanical types of cultivated peanut, of which 104 were from the U.S. mini-core. Results showed that 16 InDel markers were polymorphic with polymorphic information content (PIC) among InDels ranged from 0.017 to 0.660. With respect to botanical types, PICs varied from 0.176 for fastigiata var., 0.181 for hypogaea var., 0.306 for vulgaris var., 0.534 for aequatoriana var., 0.556 for peruviana var., to 0.660 for hirsuta var., implying that aequatoriana var., peruviana var., and hirsuta var. have higher genetic diversity than the other types and provide a basis for gene functional studies. Single marker analysis was conducted to associate specific marker to disease resistant traits. Five InDels from functional genes were identified to be significantly correlated to tomato spotted wilt virus (TSWV) infection and leaf spot, and these novel markers will be utilized to identify disease resistant genotype in breeding populations.
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Affiliation(s)
- Lifeng Liu
- Department of Crop, Soil and Environmental Sciences, Auburn UniversityAuburn, AL, USA
- Department of Agronomy, Agricultural University of HebeiBaoding, China
| | - Phat M. Dang
- National Peanut Research Laboratory, United States Department of Agriculture-Agricultural Research ServiceDawson, GA, USA
| | - Charles Y. Chen
- Department of Crop, Soil and Environmental Sciences, Auburn UniversityAuburn, AL, USA
- *Correspondence: Charles Y. Chen
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Wu K, Liu H, Yang M, Tao Y, Ma H, Wu W, Zuo Y, Zhao Y. High-density genetic map construction and QTLs analysis of grain yield-related traits in sesame (Sesamum indicum L.) based on RAD-Seq techonology. BMC PLANT BIOLOGY 2014; 14:274. [PMID: 25300176 PMCID: PMC4200128 DOI: 10.1186/s12870-014-0274-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 10/03/2014] [Indexed: 05/20/2023]
Abstract
BACKGROUND Sesame (Sesamum indicum L., 2n = 26) is an important oilseed crop with an estimated genome size of 369 Mb. The genetic basis, including the number and locations of quantitative trait loci (QTLs) of sesame grain yield and quality remain poorly understood, due in part to the lack of reliable markers and genetic maps. Here we report on the construction of a hitherto most high-density genetic map of sesame using the restriction-site associated DNA sequencing (RAD-seq) combined with 89 PCR markers, and the identification of grain yield-related QTLs using a recombinant inbred line (RIL) population. RESULT In total, 3,769 single-nucleotide polymorphism (SNP) markers were identified from RAD-seq, and 89 polymorphic PCR markers were identified including 44 expressed sequence tag-simple sequence repeats (EST-SSRs), 10 genomic-SSRs and 35 Insertion-Deletion markers (InDels). The final map included 1,230 markers distributed on 14 linkage groups (LGs) and was 844.46 cM in length with an average of 0.69 cM between adjacent markers. Using this map and RIL population, we detected 13 QTLs on 7 LGs and 17 QTLs on 10 LGs for seven grain yield-related traits by the multiple interval mapping (MIM) and the mixed linear composite interval mapping (MCIM), respectively. Three major QTLs had been identified using MIM with R2 > 10.0% or MCIM with ha 2 > 5.0%. Two co-localized QTL groups were identified that partially explained the correlations among five yield-related traits. CONCLUSION Three thousand eight hundred and four pairs of new DNA markers including SNPs and InDels were developed by RAD-seq, and a so far most high-density genetic map was constructed based on these markers in combination with SSR markers. Several grain yield-related QTLs had been identified using this population and genetic map. We report here the first QTL mapping of yield-related traits with a high-density genetic map using a RIL population in sesame. Results of this study solidified the basis for studying important agricultural traits and implementing marker-assisted selection (MAS) toward genetic improvement in sesame.
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Affiliation(s)
- Kun Wu
- />Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Sesame Genetic Improvement Laboratory, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences (OCRI-CAAS), Wuhan, Hubei 430062 China
| | - Hongyan Liu
- />Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Sesame Genetic Improvement Laboratory, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences (OCRI-CAAS), Wuhan, Hubei 430062 China
| | - Minmin Yang
- />Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Sesame Genetic Improvement Laboratory, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences (OCRI-CAAS), Wuhan, Hubei 430062 China
| | - Ye Tao
- />Shanghai Major Biological Medicine Technology Co., Ltd., Shanghai, 201203 China
| | - Huihui Ma
- />Fuyang Academy of Agricultural Sciences, Fuyang, Anhui 236065 China
| | - Wenxiong Wu
- />Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Sesame Genetic Improvement Laboratory, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences (OCRI-CAAS), Wuhan, Hubei 430062 China
| | - Yang Zuo
- />Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Sesame Genetic Improvement Laboratory, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences (OCRI-CAAS), Wuhan, Hubei 430062 China
| | - Yingzhong Zhao
- />Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Sesame Genetic Improvement Laboratory, Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences (OCRI-CAAS), Wuhan, Hubei 430062 China
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