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Liu X, Arshad R, Wang X, Li WM, Zhou Y, Ge XJ, Huang HR. The phased telomere-to-telomere reference genome of Musa acuminata, a main contributor to banana cultivars. Sci Data 2023; 10:631. [PMID: 37716992 PMCID: PMC10505225 DOI: 10.1038/s41597-023-02546-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/05/2023] [Indexed: 09/18/2023] Open
Abstract
Musa acuminata is a main wild contributor to banana cultivars. Here, we reported a haplotype-resolved and telomere-to-telomere reference genome of M. acuminata by incorporating PacBio HiFi reads, Nanopore ultra-long reads, and Hi-C data. The genome size of the two haploid assemblies was estimated to be 469.83 Mb and 470.21 Mb, respectively. Multiple assessments confirmed the contiguity (contig N50: 16.53 Mb and 18.58 Mb; LAI: 20.18 and 19.48), completeness (BUSCOs: 98.57% and 98.57%), and correctness (QV: 45.97 and 46.12) of the genome. The repetitive sequences accounted for about half of the genome size. In total, 40,889 and 38,269 protein-coding genes were annotated in the two haploid assemblies, respectively, of which 9.56% and 3.37% were newly predicted. Genome comparison identified a large reciprocal translocation involving 3 Mb and 10 Mb from chromosomes 01 and 04 within M. acuminata. This reference genome of M. acuminata provides a valuable resource for further understanding of subgenome evolution of Musa species, and precise genetic improvement of banana.
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Affiliation(s)
- Xin Liu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
- South China National Botanical Garden, Guangzhou, 510650, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rida Arshad
- National Key Laboratory of Tropical Crop Breeding, Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Xu Wang
- National Key Laboratory of Tropical Crop Breeding, Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Wei-Ming Li
- School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, 530008, China
| | - Yongfeng Zhou
- National Key Laboratory of Tropical Crop Breeding, Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Key Laboratory of Synthetic Biology, Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
- National Key Laboratory of Tropical Crop Breeding, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Xue-Jun Ge
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
- South China National Botanical Garden, Guangzhou, 510650, China
| | - Hui-Run Huang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
- South China National Botanical Garden, Guangzhou, 510650, China.
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Chen A, Sun J, Viljoen A, Mostert D, Xie Y, Mangila L, Bothma S, Lyons R, Hřibová E, Christelová P, Uwimana B, Amah D, Pearce S, Chen N, Batley J, Edwards D, Doležel J, Crisp P, Brown AF, Martin G, Yahiaoui N, D'Hont A, Coin L, Swennen R, Aitken EAB. Genetic Mapping, Candidate Gene Identification and Marker Validation for Host Plant Resistance to the Race 4 of Fusarium oxysporum f. sp. cubense Using Musa acuminata ssp. malaccensis. Pathogens 2023; 12:820. [PMID: 37375510 DOI: 10.3390/pathogens12060820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/04/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
Fusarium wilt of banana is a devastating disease that has decimated banana production worldwide. Host resistance to Fusarium oxysporum f. sp. Cubense (Foc), the causal agent of this disease, is genetically dissected in this study using two Musa acuminata ssp. Malaccensis segregating populations, segregating for Foc Tropical (TR4) and Subtropical (STR4) race 4 resistance. Marker loci and trait association using 11 SNP-based PCR markers allowed the candidate region to be delimited to a 12.9 cM genetic interval corresponding to a 959 kb region on chromosome 3 of 'DH-Pahang' reference assembly v4. Within this region, there was a cluster of pattern recognition receptors, namely leucine-rich repeat ectodomain containing receptor-like protein kinases, cysteine-rich cell-wall-associated protein kinases, and leaf rust 10 disease-resistance locus receptor-like proteins, positioned in an interspersed arrangement. Their transcript levels were rapidly upregulated in the resistant progenies but not in the susceptible F2 progenies at the onset of infection. This suggests that one or several of these genes may control resistance at this locus. To confirm the segregation of single-gene resistance, we generated an inter-cross between the resistant parent 'Ma850' and a susceptible line 'Ma848', to show that the STR4 resistance co-segregated with marker '28820' at this locus. Finally, an informative SNP marker 29730 allowed the locus-specific resistance to be assessed in a collection of diploid and polyploid banana plants. Of the 60 lines screened, 22 lines were predicted to carry resistance at this locus, including lines known to be TR4-resistant, such as 'Pahang', 'SH-3362', 'SH-3217', 'Ma-ITC0250', and 'DH-Pahang/CIRAD 930'. Additional screening in the International Institute for Tropical Agriculture's collection suggests that the dominant allele is common among the elite 'Matooke' NARITA hybrids, as well as in other triploid or tetraploid hybrids derived from East African highland bananas. Fine mapping and candidate gene identification will allow characterization of molecular mechanisms underlying the TR4 resistance. The markers developed in this study can now aid the marker-assisted selection of TR4 resistance in breeding programs around the world.
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Affiliation(s)
- Andrew Chen
- School of Agriculture and Food Science, The University of Queensland, Brisbane, QLD 4067, Australia
| | - Jiaman Sun
- School of Agriculture and Food Science, The University of Queensland, Brisbane, QLD 4067, Australia
- School of Life Science, Jiaying University, Meizhou 514015, China
| | - Altus Viljoen
- Department of Plant Pathology, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Diane Mostert
- Department of Plant Pathology, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Yucong Xie
- Department of Biology, Duke University, Durham, NC 27708-0338, USA
| | - Leroy Mangila
- School of Agriculture and Food Science, The University of Queensland, Brisbane, QLD 4067, Australia
| | - Sheryl Bothma
- Department of Plant Pathology, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Rebecca Lyons
- School of Agriculture and Food Science, The University of Queensland, Brisbane, QLD 4067, Australia
| | - Eva Hřibová
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Bio-Technological and Agricultural Research, CZ-77900 Olomouc, Czech Republic
| | - Pavla Christelová
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Bio-Technological and Agricultural Research, CZ-77900 Olomouc, Czech Republic
| | - Brigitte Uwimana
- International Institute of Tropical Agriculture, Kampala P.O. Box 7878, Uganda
| | - Delphine Amah
- International Institute of Tropical Agriculture, Ibadan PMB 5320, Nigeria
| | - Stephen Pearce
- Sustainable Soils and Crops, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
| | - Ning Chen
- School of Agriculture and Food Science, The University of Queensland, Brisbane, QLD 4067, Australia
| | - Jacqueline Batley
- School of Biological Sciences, The University of Western Australia, Perth, WA 6009, Australia
| | - David Edwards
- School of Biological Sciences, The University of Western Australia, Perth, WA 6009, Australia
- The Centre for Applied Bioinformatics, University of Western Australia, Crawley, Perth, WA 6009, Australia
| | - Jaroslav Doležel
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Bio-Technological and Agricultural Research, CZ-77900 Olomouc, Czech Republic
| | - Peter Crisp
- School of Agriculture and Food Science, The University of Queensland, Brisbane, QLD 4067, Australia
| | - Allan F Brown
- International Institute of Tropical Agriculture, Arusha P.O. Box 447, Tanzania
| | - Guillaume Martin
- CIRAD, UMR AGAP Institut, F-34398 Montpellier, France
- UMR AGAP Institut, Université de Montpellier, CIRAD, INRAE, Institut Agro, F-34398 Montpellier, France
| | - Nabila Yahiaoui
- CIRAD, UMR AGAP Institut, F-34398 Montpellier, France
- UMR AGAP Institut, Université de Montpellier, CIRAD, INRAE, Institut Agro, F-34398 Montpellier, France
| | - Angelique D'Hont
- CIRAD, UMR AGAP Institut, F-34398 Montpellier, France
- UMR AGAP Institut, Université de Montpellier, CIRAD, INRAE, Institut Agro, F-34398 Montpellier, France
| | - Lachlan Coin
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC 3004, Australia
| | - Rony Swennen
- International Institute of Tropical Agriculture, Kampala P.O. Box 7878, Uganda
- Division of Crop Biotechnics, Laboratory of Tropical Crop Improvement, Katholieke Universiteit Leuven, 3001 Leuven, Belgium
| | - Elizabeth A B Aitken
- School of Agriculture and Food Science, The University of Queensland, Brisbane, QLD 4067, Australia
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Kallow S, Panis B, Vu DT, Vu TD, Paofa J, Mertens A, Swennen R, Janssens SB. Maximizing genetic representation in seed collections from populations of self and cross-pollinated banana wild relatives. BMC PLANT BIOLOGY 2021; 21:415. [PMID: 34503446 PMCID: PMC8431884 DOI: 10.1186/s12870-021-03142-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 07/06/2021] [Indexed: 05/12/2023]
Abstract
BACKGROUND Conservation of plant genetic resources, including the wild relatives of crops, plays an important and well recognised role in addressing some of the key challenges faced by humanity and the planet including ending hunger and biodiversity loss. However, the genetic diversity and representativeness of ex situ collections, especially that contained in seed collections, is often unknown. This limits meaningful assessments against conservation targets, impairs targeting of future collecting and limits their use. We assessed genetic representation of seed collections compared to source populations for three wild relatives of bananas and plantains. Focal species and sampling regions were M. acuminata subsp. banksii (Papua New Guinea), M. balbisiana (Viet Nam) and M. maclayi s.l. (Bougainville, Papua New Guinea). We sequenced 445 samples using suites of 16-20 existing and newly developed taxon-specific polymorphic microsatellite markers. Samples of each species were from five populations in a region; 15 leaf samples from different individuals and 16 seed samples from one infructescence ('bunch') were analysed for each population. RESULTS Allelic richness of seeds compared to populations was 51, 81 and 93% (M. acuminata, M. balbisiana and M. maclayi respectively). Seed samples represented all common alleles in populations but omitted some rarer alleles. The number of collections required to achieve the 70% target of the Global Strategy for Plant Conservation was species dependent, relating to mating systems. Musa acuminata populations had low heterozygosity and diversity, indicating self-fertilization; many bunches were needed (> 15) to represent regional alleles to 70%; over 90% of the alleles from a bunch are included in only two seeds. Musa maclayi was characteristically cross-fertilizing; only three bunches were needed to represent regional alleles; within a bunch, 16 seeds represent alleles. Musa balbisiana, considered cross-fertilized, had low genetic diversity; seeds of four bunches are needed to represent regional alleles; only two seeds represent alleles in a bunch. CONCLUSIONS We demonstrate empirical measurement of representation of genetic material in seeds collections in ex situ conservation towards conservation targets. Species mating systems profoundly affected genetic representation in seed collections and therefore should be a primary consideration to maximize genetic representation. Results are applicable to sampling strategies for other wild species.
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Affiliation(s)
- Simon Kallow
- Department of Biosystems, Katholieke Universiteit Leuven, Willem de Croylaan 42, 3001, Leuven, Belgium.
- Meise Botanic Garden, Nieuwelaan 38, 1860, Meise, Belgium.
- Royal Botanic Gardens Kew, Millennium Seed Bank, Wakehurst, Ardingly, Sussex, RH17 6TN, UK.
| | - Bart Panis
- Department of Biosystems, Katholieke Universiteit Leuven, Willem de Croylaan 42, 3001, Leuven, Belgium
- Bioversity International, Willem de Croylaan 42, 3001, Leuven, Belgium
| | - Dang Toan Vu
- Plant Resources Center, Ankhanh, Hoaiduc, Hà Noi, Viet Nam
| | - Tuong Dang Vu
- Plant Resources Center, Ankhanh, Hoaiduc, Hà Noi, Viet Nam
| | - Janet Paofa
- National Agricultural Research Institute, Laloki, Port Moresby, 121, Papua New Guinea
| | - Arne Mertens
- Department of Biosystems, Katholieke Universiteit Leuven, Willem de Croylaan 42, 3001, Leuven, Belgium
- Meise Botanic Garden, Nieuwelaan 38, 1860, Meise, Belgium
- Department of Biology, Katholieke Universiteit Leuven, Kasteelpark Arenberg 31, 3001, Leuven, Belgium
| | - Rony Swennen
- Department of Biosystems, Katholieke Universiteit Leuven, Willem de Croylaan 42, 3001, Leuven, Belgium
- International Institute of Tropical Agriculture, Plot 15B Naguru East Road, Upper Naguru, 7878, Kampala, Uganda
| | - Steven B Janssens
- Meise Botanic Garden, Nieuwelaan 38, 1860, Meise, Belgium
- Department of Biology, Katholieke Universiteit Leuven, Kasteelpark Arenberg 31, 3001, Leuven, Belgium
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Kashtwari M, Mansoor S, Wani AA, Najar MA, Deshmukh RK, Baloch FS, Abidi I, Zargar SM. Random mutagenesis in vegetatively propagated crops: opportunities, challenges and genome editing prospects. Mol Biol Rep 2021; 49:5729-5749. [PMID: 34427889 DOI: 10.1007/s11033-021-06650-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/15/2021] [Indexed: 12/23/2022]
Abstract
In order to meet the growing human food and nutrition demand a perpetual process of crop improvement is idealized. It has seen changing trends and varying concepts throughout human history; from simple selection to complex gene-editing. Among these techniques, random mutagenesis has been shown to be a promising technology to achieve desirable genetic gain with less time and minimal efforts. Over the decade, several hundred varieties have been released through random mutagenesis, but the production is falling behind the demand. Several food crops like banana, potato, cassava, sweet potato, apple, citrus, and others are vegetatively propagated. Since such crops are not propagated through seed, genetic improvement through classical breeding is impractical for them. Besides, in the case of polyploids, accomplishment of allelic homozygosity requires a considerable land area, extensive fieldwork with huge manpower, and hefty funding for an extended period of time. Apart from induction, mapping of induced genes to facilitate the knowledge of biological processes has been performed only in a few selected facultative vegetative crops like banana and cassava which can form a segregating population. During the last few decades, there has been a shift in the techniques used for crop improvement. With the introduction of the robust technologies like meganucleases, zinc finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), and clustered regularly interspaced short palindromic repeats (CRISPR) more and more crops are being subjected to gene editing. However, more work needs to be done in case of vegetatively propagated crops.
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Affiliation(s)
- Mahpara Kashtwari
- Cytogenetics and Molecular Biology Laboratory, Department of Botany, University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India
| | - Sheikh Mansoor
- Division of Biochemistry, Sher-e-Kashmir University of Agricultural Sciences and Technology, FBSc, Jammu, Jammu and Kashmir, 180009, India
| | - Aijaz A Wani
- Cytogenetics and Molecular Biology Laboratory, Department of Botany, University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India.
| | - Mushtaq Ahmad Najar
- Cytogenetics and Molecular Biology Laboratory, Department of Botany, University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir, 190006, India
| | - Rupesh K Deshmukh
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, 140308, India
| | - Faheem Shehzad Baloch
- Faculty of Agricultural Sciences and Technologies, Sivas University of Science and Technology, Sivas, Turkey
| | - Ishfaq Abidi
- Directorate of Research, Sher-e-Kashmir University of Agricultural Sciences and Technology, Shalimar, Jammu and Kashmir, 190025, India
| | - Sajad Majeed Zargar
- Proteomics Laboratory, Division of Plant Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology, Shalimar, Jammu and Kashmir, 190025, India.
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Dehery SK, Das AB. Genetic diversity of twelve triploid bananas and plantains under section Eumusa as evident by chromosome morphology and SSR markers. THE NUCLEUS 2021. [DOI: 10.1007/s13237-021-00364-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Martin G, Baurens F, Hervouet C, Salmon F, Delos J, Labadie K, Perdereau A, Mournet P, Blois L, Dupouy M, Carreel F, Ricci S, Lemainque A, Yahiaoui N, D’Hont A. Chromosome reciprocal translocations have accompanied subspecies evolution in bananas. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 104:1698-1711. [PMID: 33067829 PMCID: PMC7839431 DOI: 10.1111/tpj.15031] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 10/02/2020] [Indexed: 05/09/2023]
Abstract
Chromosome rearrangements and the way that they impact genetic differentiation and speciation have long raised questions from evolutionary biologists. They are also a major concern for breeders because of their bearing on chromosome recombination. Banana is a major crop that derives from inter(sub)specific hybridizations between various once geographically isolated Musa species and subspecies. We sequenced 155 accessions, including banana cultivars and representatives of Musa diversity, and genotyped-by-sequencing 1059 individuals from 11 progenies. We precisely characterized six large reciprocal translocations and showed that they emerged in different (sub)species of Musa acuminata, the main contributor to currently cultivated bananas. Most diploid and triploid cultivars analyzed were structurally heterozygous for 1 to 4 M. acuminata translocations, highlighting their complex origin. We showed that all translocations induced a recombination reduction of variable intensity and extent depending on the translocations, involving only the breakpoint regions, a chromosome arm, or an entire chromosome. The translocated chromosomes were found preferentially transmitted in many cases. We explore and discuss the possible mechanisms involved in this preferential transmission and its impact on translocation colonization.
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Affiliation(s)
- Guillaume Martin
- CIRADUMR AGAPMontpellierF‐34398France
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
| | - Franc‐Christophe Baurens
- CIRADUMR AGAPMontpellierF‐34398France
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
| | - Catherine Hervouet
- CIRADUMR AGAPMontpellierF‐34398France
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
| | - Frédéric Salmon
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
- CIRADUMR AGAPCapesterre‐Belle‐EauGuadeloupeF‐97130France
| | - Jean‐Marie Delos
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
- CIRADUMR AGAPCapesterre‐Belle‐EauGuadeloupeF‐97130France
| | - Karine Labadie
- GenoscopeInstitut de biologie François JacobCommissariat à l'Energie Atomique (CEA)Université Paris‐SaclayEvryFrance
| | - Aude Perdereau
- GenoscopeInstitut de biologie François JacobCommissariat à l'Energie Atomique (CEA)Université Paris‐SaclayEvryFrance
| | - Pierre Mournet
- CIRADUMR AGAPMontpellierF‐34398France
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
| | - Louis Blois
- CIRADUMR AGAPMontpellierF‐34398France
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
| | - Marion Dupouy
- CIRADUMR AGAPMontpellierF‐34398France
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
| | - Françoise Carreel
- CIRADUMR AGAPMontpellierF‐34398France
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
| | - Sébastien Ricci
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
- CIRADUMR AGAPCapesterre‐Belle‐EauGuadeloupeF‐97130France
| | - Arnaud Lemainque
- GenoscopeInstitut de biologie François JacobCommissariat à l'Energie Atomique (CEA)Université Paris‐SaclayEvryFrance
| | - Nabila Yahiaoui
- CIRADUMR AGAPMontpellierF‐34398France
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
| | - Angélique D’Hont
- CIRADUMR AGAPMontpellierF‐34398France
- AGAPUniv MontpellierCIRADINRAEInstitut AgroMontpellier34060France
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Ahmad F, Martawi NM, Poerba YS, de Jong H, Schouten H, Kema GHJ. Genetic mapping of Fusarium wilt resistance in a wild banana Musa acuminata ssp. malaccensis accession. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:3409-3418. [PMID: 32918589 PMCID: PMC7567712 DOI: 10.1007/s00122-020-03677-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 08/25/2020] [Indexed: 06/11/2023]
Abstract
Banana is an important fruit and food crop, but is threatened by Fusarium wilt, one of the most devastating soil-borne fungal diseases. Only host resistance facilitates banana cultivation in infested soils around the world, but the genetic basis of Fusarium wilt of banana (FWB) is unknown. We selfed a heterozygous wild banana accession Musa acuminata ssp. malaccensis (Mam, AA, 2n = 22) to generate a mapping population and to investigate the inheritance of resistance to Race 1 and tropical race 4 (TR4) that cause FWB. Phenotyping (N = 217) revealed segregation for resistance, and genotyping by sequencing resulted in 2802 high-quality single-nucleotide polymorphic markers (SNPs) that were used for genetic mapping. Combined analyses of these data showed that a single dominant resistance locus controls resistance to Race 1 and maps near the distal part of chromosome 10. Recombinants, together with the position of the putative resistance gene, were further analysed using graphical genotyping, which retrieved markers flanking a 360 kb genetic region that associates with Race 1 resistance. The region contains 165 putative genes on the reference genome, including 19 leucine-rich repeat receptor-like kinase-like genes. At the same position and phase, we also identified a QTL for TR4 resistance, showing that the locus for resistance against Race 1 provided partial resistance to TR4. However, this effect was far less significant and hence not included in the mapping. These data support the breeding of new banana varieties with resistance to Fusarium wilt.
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Affiliation(s)
- Fajarudin Ahmad
- Research Center for Biology, Indonesian Institute of Sciences (LIPI), Jl. Raya Jakarta-Bogor Km. 46, Bogor, 16911, Indonesia
- Wageningen Plant Research, Wageningen University and Research, P.O. Box 16, 6700 AA, Wageningen, The Netherlands
| | - Nani M Martawi
- Department Biology Education, Faculty of Education and Teacher Training, Universitas Sultan Ageng Tirtayasa, Kampus 2 Untirta, Jl Ciwaru Raya No. 25, Kota Serang, Banten, Indonesia
| | - Yuyu S Poerba
- Research Center for Biology, Indonesian Institute of Sciences (LIPI), Jl. Raya Jakarta-Bogor Km. 46, Bogor, 16911, Indonesia
| | - Hans de Jong
- Laboratory of Genetics, Wageningen University and Research, P.O. Box 16, 6700 AA, Wageningen, The Netherlands
| | - Henk Schouten
- Department of Plant Breeding, Wageningen University and Research, P.O. Box 386, 6700 AJ, Wageningen, The Netherlands
| | - Gert H J Kema
- Laboratory of Phytopathology, Wageningen University and Research, P.O. Box 16, 6700 AA, Wageningen, The Netherlands.
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8
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Šimoníková D, Němečková A, Čížková J, Brown A, Swennen R, Doležel J, Hřibová E. Chromosome Painting in Cultivated Bananas and Their Wild Relatives ( Musa spp.) Reveals Differences in Chromosome Structure. Int J Mol Sci 2020; 21:ijms21217915. [PMID: 33114462 PMCID: PMC7672600 DOI: 10.3390/ijms21217915] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/21/2020] [Accepted: 10/21/2020] [Indexed: 12/17/2022] Open
Abstract
Edible banana cultivars are diploid, triploid, or tetraploid hybrids, which originated by natural cross hybridization between subspecies of diploid Musa acuminata, or between M. acuminata and diploid Musa balbisiana. The participation of two other wild diploid species Musa schizocarpa and Musa textilis was also indicated by molecular studies. The fusion of gametes with structurally different chromosome sets may give rise to progenies with structural chromosome heterozygosity and reduced fertility due to aberrant chromosome pairing and unbalanced chromosome segregation. Only a few translocations have been classified on the genomic level so far, and a comprehensive molecular cytogenetic characterization of cultivars and species of the family Musaceae is still lacking. Fluorescence in situ hybridization (FISH) with chromosome-arm-specific oligo painting probes was used for comparative karyotype analysis in a set of wild Musa species and edible banana clones. The results revealed large differences in chromosome structure, discriminating individual accessions. These results permitted the identification of putative progenitors of cultivated clones and clarified the genomic constitution and evolution of aneuploid banana clones, which seem to be common among the polyploid banana accessions. New insights into the chromosome organization and structural chromosome changes will be a valuable asset in breeding programs, particularly in the selection of appropriate parents for cross hybridization.
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Affiliation(s)
- Denisa Šimoníková
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Hana for Biotechnological and Agricultural Research, 77900 Olomouc, Czech Republic; (D.Š.); (A.N.); (J.Č.); (J.D.)
| | - Alžběta Němečková
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Hana for Biotechnological and Agricultural Research, 77900 Olomouc, Czech Republic; (D.Š.); (A.N.); (J.Č.); (J.D.)
| | - Jana Čížková
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Hana for Biotechnological and Agricultural Research, 77900 Olomouc, Czech Republic; (D.Š.); (A.N.); (J.Č.); (J.D.)
| | - Allan Brown
- International Institute of Tropical Agriculture, Banana Breeding, PO Box 447 Arusha, Tanzania; (A.B.); (R.S.)
| | - Rony Swennen
- International Institute of Tropical Agriculture, Banana Breeding, PO Box 447 Arusha, Tanzania; (A.B.); (R.S.)
- Division of Crop Biotechnics, Laboratory of Tropical Crop Improvement, Katholieke Universiteit Leuven, 3001 Leuven, Belgium
| | - Jaroslav Doležel
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Hana for Biotechnological and Agricultural Research, 77900 Olomouc, Czech Republic; (D.Š.); (A.N.); (J.Č.); (J.D.)
| | - Eva Hřibová
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Hana for Biotechnological and Agricultural Research, 77900 Olomouc, Czech Republic; (D.Š.); (A.N.); (J.Č.); (J.D.)
- Correspondence: ; Tel.: +420-585-238-713
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9
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Dupouy M, Baurens FC, Derouault P, Hervouet C, Cardi C, Cruaud C, Istace B, Labadie K, Guiougou C, Toubi L, Salmon F, Mournet P, Rouard M, Yahiaoui N, Lemainque A, Martin G, D’Hont A. Two large reciprocal translocations characterized in the disease resistance-rich burmannica genetic group of Musa acuminata. ANNALS OF BOTANY 2019; 124:319-329. [PMID: 31241133 PMCID: PMC6758587 DOI: 10.1093/aob/mcz078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 06/09/2019] [Indexed: 05/11/2023]
Abstract
BACKGROUND AND AIMS Banana cultivars are derived from hybridizations involving Musa acuminata subspecies. The latter diverged following geographical isolation in distinct South-east Asian continental regions and islands. Observation of chromosome pairing irregularities in meiosis of hybrids between these subspecies suggested the presence of large chromosomal structural variations. The aim of this study was to characterize such rearrangements. METHODS Marker (single nucleotide polymorphism) segregation in a self-progeny of the 'Calcutta 4' accession and mate-pair sequencing were used to search for chromosomal rearrangements in comparison with the M. acuminata ssp. malaccensis genome reference sequence. Signature segment junctions of the revealed chromosome structures were identified and searched in whole-genome sequencing data from 123 wild and cultivated Musa accessions. KEY RESULTS Two large reciprocal translocations were characterized in the seedy banana M. acuminata ssp. burmannicoides 'Calcutta 4' accession. One consisted of an exchange of a 240 kb distal region of chromosome 2 with a 7.2 Mb distal region of chromosome 8. The other involved an exchange of a 20.8 Mb distal region of chromosome 1 with a 11.6 Mb distal region of chromosome 9. Both translocations were found only in wild accessions belonging to the burmannicoides/burmannica/siamea subspecies. Only two of the 87 cultivars analysed displayed the 2/8 translocation, while none displayed the 1/9 translocation. CONCLUSION Two large reciprocal translocations were identified that probably originated in the burmannica genetic group. Accurate characterization of these translocations should enhance the use of this disease resistance-rich burmannica group in breeding programmes.
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Affiliation(s)
- Marion Dupouy
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Franc-Christophe Baurens
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Paco Derouault
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Catherine Hervouet
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Céline Cardi
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Corinne Cruaud
- Genoscope, Institut de biologie François-Jacob, Commissariat à l’Energie Atomique (CEA), Université Paris-Saclay, Evry, France
| | - Benjamin Istace
- Genoscope, Institut de biologie François-Jacob, Commissariat à l’Energie Atomique (CEA), Université Paris-Saclay, Evry, France
| | - Karine Labadie
- Genoscope, Institut de biologie François-Jacob, Commissariat à l’Energie Atomique (CEA), Université Paris-Saclay, Evry, France
| | | | | | | | - Pierre Mournet
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | | | - Nabila Yahiaoui
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Arnaud Lemainque
- Genoscope, Institut de biologie François-Jacob, Commissariat à l’Energie Atomique (CEA), Université Paris-Saclay, Evry, France
| | - Guillaume Martin
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Angélique D’Hont
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Université Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
- For correspondence. E-mail
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10
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Baurens FC, Martin G, Hervouet C, Salmon F, Yohomé D, Ricci S, Rouard M, Habas R, Lemainque A, Yahiaoui N, D'Hont A. Recombination and Large Structural Variations Shape Interspecific Edible Bananas Genomes. Mol Biol Evol 2019; 36:97-111. [PMID: 30403808 PMCID: PMC6340459 DOI: 10.1093/molbev/msy199] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Admixture and polyploidization are major recognized eukaryotic genome evolutionary processes. Their impacts on genome dynamics vary among systems and are still partially deciphered. Many banana cultivars are triploid (sometimes diploid) interspecific hybrids between Musa acuminata (A genome) and M. balbisiana (B genome). They have no or very low fertility, are vegetatively propagated and have been classified as “AB,” “AAB,” or “ABB” based on morphological characters. We used NGS sequence data to characterize the A versus B chromosome composition of nine diploid and triploid interspecific cultivars, to compare the chromosome structures of A and B genomes and analyze A/B chromosome segregations in a polyploid context. We showed that interspecific recombination occurred frequently between A and B chromosomes. We identified two large structural variations between A and B genomes, a reciprocal translocation and an inversion that locally affected recombination and led to segregation distortion and aneuploidy in a triploid progeny. Interspecific recombination and large structural variations explained the mosaic genomes observed in edible bananas. The unprecedented resolution in deciphering their genome structure allowed us to start revisiting the origins of banana cultivars and provided new information to gain insight into the impact of interspecificity on genome evolution. It will also facilitate much more effective assessment of breeding strategies.
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Affiliation(s)
- Franc-Christophe Baurens
- CIRAD, UMR AGAP, F-34398 Montpellier, France.,AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Guillaume Martin
- CIRAD, UMR AGAP, F-34398 Montpellier, France.,AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Catherine Hervouet
- CIRAD, UMR AGAP, F-34398 Montpellier, France.,AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Frédéric Salmon
- AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France.,CIRAD, UMR AGAP, F-97130 Capesterre Belle Eau, Guadeloupe, France
| | | | - Sébastien Ricci
- AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France.,CIRAD, UMR AGAP, F-97130 Capesterre Belle Eau, Guadeloupe, France.,CARBAP, Bonanjo, Douala, Cameroon
| | - Mathieu Rouard
- Bioversity International, Parc Scientifique Agropolis II, Montpellier, Cedex 5, France
| | - Remy Habas
- CIRAD, UMR BGPI, F-34398 Montpellier, France.,BGPI, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Arnaud Lemainque
- Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Biologie François-Jacob, Genoscope, Evry, France
| | - Nabila Yahiaoui
- CIRAD, UMR AGAP, F-34398 Montpellier, France.,AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Angélique D'Hont
- CIRAD, UMR AGAP, F-34398 Montpellier, France.,AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
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11
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Perrier X, Jenny C, Bakry F, Karamura D, Kitavi M, Dubois C, Hervouet C, Philippson G, De Langhe E. East African diploid and triploid bananas: a genetic complex transported from South-East Asia. ANNALS OF BOTANY 2019; 123:19-36. [PMID: 30247503 PMCID: PMC6344093 DOI: 10.1093/aob/mcy156] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 07/27/2018] [Indexed: 05/23/2023]
Abstract
BACKGROUND AND AIMS Besides bananas belonging to the AAA triploid Mutika subgroup, which predominates in the Great Lakes countries, other AAA triploids as well as edible AA diploids, locally of considerable cultural weight, are cultivated in East Africa and in the nearby Indian Ocean islands as far as Madagascar. All these varieties call for the genetic identification and characterization of their interrelations on account of their regional socio-economic significance and their potential for banana breeding strategies. METHODS An extensive sampling of all traditional bananas in East Africa and near Indian Ocean islands was genotyped with simple sequence repeat (SSR) markers, with particular emphasis on the diploid forms and on the bananas of the Indian Ocean islands, which remain poorly characterized. KEY RESULTS All the edible AA varieties studied here are genetically homogeneous, constituting a unique subgroup, here called 'Mchare', despite high phenotypic variation and adaptions to highly diverse ecological zones. At triploid level, and besides the well-known AAA Mutika subgroup, at least two other genetically related AAA subgroups specific to this region are identified. Neither of these East African AAA genotypes can be derived directly from the local AA Mchare diploids. However, it is demonstrated that the East African diploids and triploids together belong to the same genetic complex. The geographical distribution of their wild acuminata relatives allowed identification of the original area of this complex in a restricted part of island South-East Asia. The inferred origin leads to consideration of the history of banana introduction in Africa. Linked to biological features, documentation on the embedding of bananas in founding legends and myths and convincing linguistic elements were informative regarding the period and the peoples who introduced these Asian plants into Africa. The results point to the role of Austronesian-speaking peoples who colonized the Indian Ocean islands, particularly Madagascar, and reached the East African coasts. CONCLUSIONS Understanding of the relations between the components of this complex and identifying their Asian wild relatives and related cultivars will be a valuable asset in breeding programmes and will boost the genetic improvement of East African bananas, but also of other globally important subgroups, in particular the AAA Cavendish.
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Affiliation(s)
- Xavier Perrier
- CIRAD, UMR AGAP, F-34398 Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Christophe Jenny
- CIRAD, UMR AGAP, F-34398 Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Frédéric Bakry
- CIRAD, UMR AGAP, F-34398 Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | | | | | - Cécile Dubois
- CIRAD, UMR AGAP, F-34398 Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Catherine Hervouet
- CIRAD, UMR AGAP, F-34398 Montpellier, France
- AGAP, Université de Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Gérard Philippson
- Institut National des Langues et Civilisations Orientales, Paris, France
- Laboratoire Dynamique du Langage CNRS, Université Lyon, France
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12
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Němečková A, Christelová P, Čížková J, Nyine M, Van den houwe I, Svačina R, Uwimana B, Swennen R, Doležel J, Hřibová E. Molecular and Cytogenetic Study of East African Highland Banana. FRONTIERS IN PLANT SCIENCE 2018; 9:1371. [PMID: 30337933 PMCID: PMC6180188 DOI: 10.3389/fpls.2018.01371] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 08/29/2018] [Indexed: 05/20/2023]
Abstract
East African highland bananas (EAHBs) are staple food crop in Uganda, Tanzania, Burundi, and other countries in the African Great Lakes region. Even though several morphologically different types exist, all EAHBs are triploid and display minimal genetic variation. To provide more insights into the genetic variation within EAHBs, genotyping using simple sequence repeat (SSR) markers, molecular analysis of ITS1-5.8S-ITS2 region of ribosomal DNA locus, and the analysis of chromosomal distribution of ribosomal DNA sequences were done. A total of 38 triploid EAHB accessions available in the Musa germplasm collection (International Transit Centre, Leuven, Belgium) were characterized. Six diploid accessions of Musa acuminata ssp. zebrina, ssp. banksii, and ssp. malaccensis representing putative parents of EAHBs were included in the study. Flow cytometric estimation of 2C nuclear DNA content revealed small differences (max ~6.5%) in genome size among the EAHB clones. While no differences in the number of 45S and 5S rDNA loci were found, genotyping using 19 SSR markers resulted in grouping the EAHB accessions into four clusters. The DNA sequence analysis of the internal transcribed spacer region indicated a relation of EAHB clones with M. acuminata and, surprisingly, also with M. schizocarpa. The results suggest that EAHB cultivars originated from a single hybrid clone with M. acuminata ssp. zebrina and ssp. banksii being its most probable parents. However, M. schizocarpa seems to have contributed to the formation of this group of banana.
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Affiliation(s)
- Alžběta Němečková
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Pavla Christelová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Jana Čížková
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Moses Nyine
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
- International Institute of Tropical Agriculture, Banana Breeding, Kampala, Uganda
| | | | - Radim Svačina
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Brigitte Uwimana
- International Institute of Tropical Agriculture, Banana Breeding, Kampala, Uganda
| | - Rony Swennen
- Bioversity International, Banana Genetic Resources, Heverlee, Belgium
- Division of Crop Biotechnics, Laboratory of Tropical Crop Improvement, Katholieke Universiteit Leuven, Leuven, Belgium
- International Institute of Tropical Agriculture, Banana Breeding, Arusha, Tanzania
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Eva Hřibová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
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13
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Němečková A, Christelová P, Čížková J, Nyine M, Van den Houwe I, Svačina R, Uwimana B, Swennen R, Doležel J, Hřibová E. Molecular and Cytogenetic Study of East African Highland Banana. FRONTIERS IN PLANT SCIENCE 2018; 9:1371. [PMID: 30337933 DOI: 10.3389/fpls.2018.01371/full] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 08/29/2018] [Indexed: 05/24/2023]
Abstract
East African highland bananas (EAHBs) are staple food crop in Uganda, Tanzania, Burundi, and other countries in the African Great Lakes region. Even though several morphologically different types exist, all EAHBs are triploid and display minimal genetic variation. To provide more insights into the genetic variation within EAHBs, genotyping using simple sequence repeat (SSR) markers, molecular analysis of ITS1-5.8S-ITS2 region of ribosomal DNA locus, and the analysis of chromosomal distribution of ribosomal DNA sequences were done. A total of 38 triploid EAHB accessions available in the Musa germplasm collection (International Transit Centre, Leuven, Belgium) were characterized. Six diploid accessions of Musa acuminata ssp. zebrina, ssp. banksii, and ssp. malaccensis representing putative parents of EAHBs were included in the study. Flow cytometric estimation of 2C nuclear DNA content revealed small differences (max ~6.5%) in genome size among the EAHB clones. While no differences in the number of 45S and 5S rDNA loci were found, genotyping using 19 SSR markers resulted in grouping the EAHB accessions into four clusters. The DNA sequence analysis of the internal transcribed spacer region indicated a relation of EAHB clones with M. acuminata and, surprisingly, also with M. schizocarpa. The results suggest that EAHB cultivars originated from a single hybrid clone with M. acuminata ssp. zebrina and ssp. banksii being its most probable parents. However, M. schizocarpa seems to have contributed to the formation of this group of banana.
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Affiliation(s)
- Alžběta Němečková
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Pavla Christelová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Jana Čížková
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Moses Nyine
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
- International Institute of Tropical Agriculture, Banana Breeding, Kampala, Uganda
| | | | - Radim Svačina
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Brigitte Uwimana
- International Institute of Tropical Agriculture, Banana Breeding, Kampala, Uganda
| | - Rony Swennen
- Bioversity International, Banana Genetic Resources, Heverlee, Belgium
- Division of Crop Biotechnics, Laboratory of Tropical Crop Improvement, Katholieke Universiteit Leuven, Leuven, Belgium
- International Institute of Tropical Agriculture, Banana Breeding, Arusha, Tanzania
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
| | - Eva Hřibová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Olomouc, Czechia
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14
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Martin G, Carreel F, Coriton O, Hervouet C, Cardi C, Derouault P, Roques D, Salmon F, Rouard M, Sardos J, Labadie K, Baurens FC, D'Hont A. Evolution of the Banana Genome (Musa acuminata) Is Impacted by Large Chromosomal Translocations. Mol Biol Evol 2017; 34:2140-2152. [PMID: 28575404 PMCID: PMC5850475 DOI: 10.1093/molbev/msx164] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Most banana cultivars are triploid seedless parthenocarpic clones derived from hybridization between Musa acuminata subspecies and sometimes M. balbisiana. M. acuminata subspecies were suggested to differ by a few large chromosomal rearrangements based on chromosome pairing configurations in intersubspecies hybrids. We searched for large chromosomal rearrangements in a seedy M. acuminata ssp. malaccensis banana accession through mate-pair sequencing, BAC-FISH, targeted PCR and marker (DArTseq) segregation in its progeny. We identified a heterozygous reciprocal translocation involving two distal 3 and 10 Mb segments from chromosomes 01 and 04, respectively, and showed that it generated high segregation distortion, reduced recombination and linkage between chromosomes 01 and 04 in its progeny. The two chromosome structures were found to be mutually exclusive in gametes and the rearranged structure was preferentially transmitted to the progeny. The rearranged chromosome structure was frequently found in triploid cultivars but present only in wild malaccensis ssp. accessions, thus suggesting that this rearrangement occurred in M. acuminata ssp. malaccensis. We propose a mechanism for the spread of this rearrangement in Musa diversity and suggest that this rearrangement could have played a role in the emergence of triploid cultivars.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Karine Labadie
- Commissariat à l'Energie Atomique (CEA), Institut Genomique (IG), Genoscope, Evry, France
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15
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Sardos J, Perrier X, Doležel J, Hřibová E, Christelová P, Van den Houwe I, Kilian A, Roux N. DArT whole genome profiling provides insights on the evolution and taxonomy of edible Banana (Musa spp.). ANNALS OF BOTANY 2016; 118:1269-1278. [PMID: 27590334 PMCID: PMC5155597 DOI: 10.1093/aob/mcw170] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 04/20/2016] [Accepted: 06/17/2016] [Indexed: 05/24/2023]
Abstract
BACKGROUND AND AIMS Dessert and cooking bananas are vegetatively propagated crops of great importance for both the subsistence and the livelihood of people in developing countries. A wide diversity of diploid and triploid cultivars including AA, AB, AS, AT, AAA, AAB, ABB, AAS and AAT genomic constitutions exists. Within each of this genome groups, cultivars are classified into subgroups that are reported to correspond to varieties clonally derived from each other after a single sexual event. The number of those founding events at the basis of the diversity of bananas is a matter of debate. METHODS We analysed a large panel of 575 accessions, 94 wild relatives and 481 cultivated accessions belonging to the section Musa with a set of 498 DArT markers previously developed. KEY RESULTS DArT appeared successful and accurate to describe Musa diversity and help in the resolution of cultivated banana genome constitution and taxonomy, and highlighted discrepancies in the acknowledged classification of some accessions. This study also argues for at least two centres of domestication corresponding to South-East Asia and New Guinea, respectively. Banana domestication in New Guinea probably followed different schemes that those previously reported where hybridization underpins the emergence of edible banana. In addition, our results suggest that not all wild ancestors of bananas are known, especially in M. acuminata subspecies. We also estimate the extent of the two consecutive bottlenecks in edible bananas by evaluating the number of sexual founding events underlying our sets of edible diploids and triploids, respectively. CONCLUSIONS The attribution of clone identity to each sample of the sets allowed the detection of subgroups represented by several sets of clones. Although morphological characterization of some of the accessions is needed to correct potentially erroneous classifications, some of the subgroups seem polyclonal.
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Affiliation(s)
- J Sardos
- Bioversity International, Parc Scientifique Agropolis II, 1990 boulevard de la Lironde, 34397 Montpellier Cedex 5, France
| | - X Perrier
- CIRAD, UMR AGAP, 34398 Montpellier, France
| | - J Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371 Olomouc, Czech Republic
| | - E Hřibová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371 Olomouc, Czech Republic
| | - P Christelová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371 Olomouc, Czech Republic
| | - I Van den Houwe
- Bioversity International, Willem De Croylaan 42, 3001 Leuven, Belgium
| | - A Kilian
- Diversity Arrays Technology Pty Ltd, Building 3, University of Canberra, Bruce, ACT 2617, Australia
| | - N Roux
- Bioversity International, Parc Scientifique Agropolis II, 1990 boulevard de la Lironde, 34397 Montpellier Cedex 5, France
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16
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Duroy PO, Perrier X, Laboureau N, Jacquemoud-Collet JP, Iskra-Caruana ML. How endogenous plant pararetroviruses shed light on Musa evolution. ANNALS OF BOTANY 2016; 117:625-41. [PMID: 26971286 PMCID: PMC4817503 DOI: 10.1093/aob/mcw011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 11/06/2015] [Indexed: 05/09/2023]
Abstract
BACKGROUND AND AIMS Banana genomes harbour numerous copies of viral sequences derived from banana streak viruses (BSVs) - dsDNA viruses belonging to the family Caulimoviridae.These viral integrants (eBSVs) are mostly defective, probably as a result of 'pseudogenization' driven by host genome evolution. However, some can give rise to infection by releasing a functional viral genome following abiotic stresses. These distinct infective eBSVs correspond to the three main widespread BSV species (BSOLV, BSGFV and BSIMV), fully described within the Musa balbisiana B genomes of the seedy diploid 'Pisang Klutuk Wulung' (PKW). METHODS We characterize eBSV distribution among a Musa sampling including seedy BB diploids and interspecific hybrids with Musa acuminate exhibiting different levels of ploidy for the B genome (ABB, AAB, AB). We used representative samples of the two areas of sympatry between M. acuminate and M. balbisiana species representing the native area of the most widely cultivated AAB cultivars (in India and in East Asia, ranging from the Philippines to New Guinea). Seventy-seven accessions were characterized using eBSV-related PCR markers and Southern hybridization approaches. We coded both sets of results to create a common dissimilarity matrix with which to interpret eBSV distribution. KEY RESULTS We propose a Musa phylogeny driven by the M. balbisiana genome based on a dendrogram resulting from a joint neighbour-joining analysis of the three BSV species, showing for the first time lineages between BB and ABB/AAB hybrids. eBSVs appear to be relevant phylogenetic markers that can illustrate theM. balbisiana phylogeography story. CONCLUSION The theoretical implications of this study for further elucidation of the historical and geographical process of Musa domestication are numerous. Discovery of banana plants with B genome non-infective for eBSV opens the way to the introduction of new genitors in programmes of genetic banana improvement.
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17
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Kagy V, Wong M, Vandenbroucke H, Jenny C, Dubois C, Ollivier A, Cardi C, Mournet P, Tuia V, Roux N, Doležel J, Perrier X. Traditional Banana Diversity in Oceania: An Endangered Heritage. PLoS One 2016; 11:e0151208. [PMID: 26982801 PMCID: PMC4794170 DOI: 10.1371/journal.pone.0151208] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 02/23/2016] [Indexed: 11/22/2022] Open
Abstract
This study aims to understand the genetic diversity of traditional Oceanian starchy bananas in order to propose an efficient conservation strategy for these endangered varieties. SSR and DArT molecular markers are used to characterize a large sample of Pacific accessions, from New Guinea to Tahiti and Hawaii. All Pacific starchy bananas are shown of New Guinea origin, by interspecific hybridization between Musa acuminata (AA genome), more precisely its local subspecies M. acuminata ssp. banksii, and M. balbisiana (BB genome) generating triploid AAB Pacific starchy bananas. These AAB genotypes do not form a subgroup sensu stricto and genetic markers differentiate two subgroups across the three morphotypes usually identified: Iholena versus Popoulu and Maoli. The Popoulu/Maoli accessions, even if morphologically diverse throughout the Pacific, cluster in the same genetic subgroup. However, the subgroup is not strictly monophyletic and several close, but different genotypes are linked to the dominant genotype. One of the related genotypes is specific to New Caledonia (NC), with morphotypes close to Maoli, but with some primitive characters. It is concluded that the diffusion of Pacific starchy AAB bananas results from a series of introductions of triploids originating in New Guinea area from several sexual recombination events implying different genotypes of M. acuminata ssp. banksii. This scheme of multiple waves from the New Guinea zone is consistent with the archaeological data for peopling of the Pacific. The present geographic distribution suggests that a greater diversity must have existed in the past. Its erosion finds parallels with the erosion of cultural traditions, inexorably declining in most of the Polynesian or Melanesian Islands. Symmetrically, diversity hot spots appear linked to the local persistence of traditions: Maoli in New Caledonian Kanak traditions or Iholena in a few Polynesian islands. These results will contribute to optimizing the conservation strategy for the ex-situ Pacific Banana Collection supported collectively by the Pacific countries.
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Affiliation(s)
- Valérie Kagy
- Institut Agronomique néo Calédonien (IAC), Connaissance et Amélioration des Agro-Systèmes, BP 32 98880 La Foa, Nouvelle Calédonie
- * E-mail:
| | - Maurice Wong
- Service du Développement Rural (SDR), Département de la Recherche Agronomique, BP 100, 98713 Papeete—Tahiti, Polynésie française
| | - Henri Vandenbroucke
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes (AGAP), Avenue Agropolis, F-34398 Montpellier Cedex 5, France
| | - Christophe Jenny
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes (AGAP), Avenue Agropolis, F-34398 Montpellier Cedex 5, France
| | - Cécile Dubois
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes (AGAP), Avenue Agropolis, F-34398 Montpellier Cedex 5, France
| | - Anthony Ollivier
- Institut Agronomique néo Calédonien (IAC), Connaissance et Amélioration des Agro-Systèmes, BP 32 98880 La Foa, Nouvelle Calédonie
| | - Céline Cardi
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes (AGAP), Avenue Agropolis, F-34398 Montpellier Cedex 5, France
| | - Pierre Mournet
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes (AGAP), Avenue Agropolis, F-34398 Montpellier Cedex 5, France
| | - Valérie Tuia
- Pacific Community, Land Resources Division, Centre for Pacific Crops and Trees (CePaCT), Private Mail Bag, Suva, Fiji Islands
| | - Nicolas Roux
- Bioversity International, Parc Scientifique Agropolis II, F-34397 Montpellier Cedex 5, France
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, CZ-78371 Olomouc, Czech Republic
| | - Xavier Perrier
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes (AGAP), Avenue Agropolis, F-34398 Montpellier Cedex 5, France
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Kitavi M, Downing T, Lorenzen J, Karamura D, Onyango M, Nyine M, Ferguson M, Spillane C. The triploid East African Highland Banana (EAHB) genepool is genetically uniform arising from a single ancestral clone that underwent population expansion by vegetative propagation. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2016; 129:547-61. [PMID: 26743524 DOI: 10.1007/s00122-015-2647-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 11/30/2015] [Indexed: 05/04/2023]
Abstract
All East African Highland Banana varieties are genetically uniform having arisen from a single clone introduced to Africa. East African Highland bananas (EAHBs) are a subgroup of triploid (AAA genome) bananas of importance to food security in the Great Lakes region of Africa. Little is known about their genetic variation, population structure and evolutionary history. Ninety phenotypically diverse EAHB cultivars were genotyped at 100 SSR microsatellite markers to investigate population genetic diversity, the correlation of genetic variability with morphological classes, and evolutionary origins since introduction to Africa. Population-level statistics were compared to those for plantain (AAB) and dessert (AAA) cultivars representing other M. acuminata subgroups. EAHBs displayed minimal genetic variation and are largely genetically uniform, irrespective of whether they were derived from the distinct Ugandan or Kenyan germplasm collections. No association was observed between EAHB genetic diversity and currently employed morphological taxonomic systems for EAHB germplasm. Population size dynamics indicated that triploid EAHBs arose as a single hybridization event, which generated a genetic bottleneck during foundation of the EAHB genepool. As EAHB triploids are sterile, subsequent asexual vegetative propagation of EAHBs allowed a recent rapid expansion in population size. This provided a basis for emergence of genetically near-isogenic somatic mutants selected across farmers and environments in East Africa over the past 2000 years since EAHBs were first introduced to the African continent.
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Affiliation(s)
- Mercy Kitavi
- Genetics and Biotechnology Lab, Plant and AgriBiosciences Research Centre (PABC), School of Natural Sciences, C306 Aras de Brun, National University of Ireland Galway, University Road, Galway, Ireland
- International Institute for Tropical Agriculture (IITA), Biosciences Eastern and Central Africa (BecA-ILRI), P.O. Box 30709-00100, Nairobi, Kenya
| | - Tim Downing
- School of Mathematics, Statistics and Applied Mathematics, National University of Ireland Galway, University Road, Galway, Ireland
| | - Jim Lorenzen
- International Institute for Tropical Agriculture (IITA), Biosciences Eastern and Central Africa (BecA-ILRI), P.O. Box 30709-00100, Nairobi, Kenya
- Bill and Melinda Gates Foundation, 500 5th Ave N, Seattle, WA, 98102, USA
| | - Deborah Karamura
- Bioversity International, PLOT 106, Katalima Road, P.O. Box 24384, Kampala, Uganda
| | - Margaret Onyango
- Kenya Agricultural Research Institute (KARI), KARI, Kisii Centre, P.O. Box 523-40200, Kisii, Kenya
| | - Moses Nyine
- International Institute for Tropical Agriculture (IITA), Biosciences Eastern and Central Africa (BecA-ILRI), P.O. Box 30709-00100, Nairobi, Kenya
| | - Morag Ferguson
- International Institute for Tropical Agriculture (IITA), Biosciences Eastern and Central Africa (BecA-ILRI), P.O. Box 30709-00100, Nairobi, Kenya
| | - Charles Spillane
- Genetics and Biotechnology Lab, Plant and AgriBiosciences Research Centre (PABC), School of Natural Sciences, C306 Aras de Brun, National University of Ireland Galway, University Road, Galway, Ireland.
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Dai B, Guo H, Huang C, Ahmed MM, Lin Z. Identification and Characterization of Segregation Distortion Loci on Cotton Chromosome 18. FRONTIERS IN PLANT SCIENCE 2016; 7:2037. [PMID: 28149299 PMCID: PMC5242213 DOI: 10.3389/fpls.2016.02037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 12/20/2016] [Indexed: 05/11/2023]
Abstract
Segregation distortion is commonly detected via genetic mapping and this phenomenon has been reported in many species. However, the genetic causes of the segregation distortion regions in a majority of species are still unclear. To genetically dissect the SD on chromosome 18 in cotton, eight reciprocal backcross populations and two F2 populations were developed. Eleven segregation distortion loci (SDL) were detected in these ten populations. Comparative analyses among populations revealed that SDL18.1 and SDL18.9 were consistent with male gametic competition; whereas SDL18.4 and SDL18.11 reflected female gametic selection. Similarly, other SDL could reflect zygotic selection. The surprising finding was that SDL18.8 was detected in all populations, and the direction was skewed towards heterozygotes. Consequently, zygotic selection or heterosis could represent the underlying genetic mechanism for SDL18.8. Among developed introgression lines, SDL18.8 was introgressed as a heterozygote, further substantiating that a heterozygote state was preferred under competition. Six out of 11 SDL on chromosome 18 were dependent on the cytoplasmic environment. These results indicated that different SDL showed varying responses to the cytoplasmic environment. Overall, the results provided a novel strategy to analyze the molecular mechanisms, which could be further exploited in cotton interspecific breeding programs.
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Čížková J, Hřibová E, Christelová P, Van den Houwe I, Häkkinen M, Roux N, Swennen R, Doležel J. Molecular and Cytogenetic Characterization of Wild Musa Species. PLoS One 2015; 10:e0134096. [PMID: 26252482 PMCID: PMC4529165 DOI: 10.1371/journal.pone.0134096] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Accepted: 07/07/2015] [Indexed: 01/19/2023] Open
Abstract
The production of bananas is threatened by rapid spreading of various diseases and adverse environmental conditions. The preservation and characterization of banana diversity is essential for the purposes of crop improvement. The world's largest banana germplasm collection maintained at the Bioversity International Transit Centre (ITC) in Belgium is continuously expanded by new accessions of edible cultivars and wild species. Detailed morphological and molecular characterization of the accessions is necessary for efficient management of the collection and utilization of banana diversity. In this work, nuclear DNA content and genomic distribution of 45S and 5S rDNA were examined in 21 diploid accessions recently added to ITC collection, representing both sections of the genus Musa. 2C DNA content in the section Musa ranged from 1.217 to 1.315 pg. Species belonging to section Callimusa had 2C DNA contents ranging from 1.390 to 1.772 pg. While the number of 45S rDNA loci was conserved in the section Musa, it was highly variable in Callimusa species. 5S rRNA gene clusters were found on two to eight chromosomes per diploid cell. The accessions were genotyped using a set of 19 microsatellite markers to establish their relationships with the remaining accessions held at ITC. Genetic diversity done by SSR genotyping platform was extended by phylogenetic analysis of ITS region. ITS sequence data supported the clustering obtained by SSR analysis for most of the accessions. High level of nucleotide diversity and presence of more than two types of ITS sequences in eight wild diploids pointed to their origin by hybridization of different genotypes. This study significantly expands the number of wild Musa species where nuclear genome size and genomic distribution of rDNA loci is known. SSR genotyping identified Musa species that are closely related to the previously characterized accessions and provided data to aid in their classification. Sequence analysis of ITS region provided further information about evolutionary relationships between individual accessions and suggested that some of analyzed accessions were interspecific hybrids and/or backcross progeny.
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Affiliation(s)
- Jana Čížková
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, CZ-78371, Olomouc, Czech Republic
| | - Eva Hřibová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, CZ-78371, Olomouc, Czech Republic
| | - Pavla Christelová
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, CZ-78371, Olomouc, Czech Republic
| | | | - Markku Häkkinen
- Finnish Museum of Natural History, University of Helsinki, FI-00014, Helsinki, Finland
| | - Nicolas Roux
- Bioversity International, 34397 Montpellier Cedex 5, France
| | - Rony Swennen
- Bioversity International, B-3001, Leuven, Belgium
- Division of Crop Biotechnics, KU Leuven, B-3001, Leuven, Belgium
- International Institute of Tropical Agriculture, Duluti, Arusha, Tanzania
| | - Jaroslav Doležel
- Institute of Experimental Botany, Centre of the Region Haná for Biotechnological and Agricultural Research, CZ-78371, Olomouc, Czech Republic
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Biswas MK, Liu Y, Li C, Sheng O, Mayer C, Yi G. Genome-Wide Computational Analysis of Musa Microsatellites: Classification, Cross-Taxon Transferability, Functional Annotation, Association with Transposons & miRNAs, and Genetic Marker Potential. PLoS One 2015; 10:e0131312. [PMID: 26121637 PMCID: PMC4488140 DOI: 10.1371/journal.pone.0131312] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 06/01/2015] [Indexed: 01/14/2023] Open
Abstract
The development of organized, informative, robust, user-friendly, and freely accessible molecular markers is imperative to the Musa marker assisted breeding program. Although several hundred SSR markers have already been developed, the number of informative, robust, and freely accessible Musa markers remains inadequate for some breeding applications. In view of this issue, we surveyed SSRs in four different data sets, developed large-scale non-redundant highly informative therapeutic SSR markers, and classified them according to their attributes, as well as analyzed their cross-taxon transferability and utility for the genetic study of Musa and its relatives. A high SSR frequency (177 per Mbp) was found in the Musa genome. AT-rich dinucleotide repeats are predominant, and trinucleotide repeats are the most abundant in transcribed regions. A significant number of Musa SSRs are associated with pre-miRNAs, and 83% of these SSRs are promising candidates for the development of therapeutic SSR markers. Overall, 74% of the SSR markers were polymorphic, and 94% were transferable to at least one Musa spp. Two hundred forty-three markers generated a total of 1047 alleles, with 2-8 alleles each and an average of 4.38 alleles per locus. The PIC values ranged from 0.31 to 0.89 and averaged 0.71. We report the largest set of non-redundant, polymorphic, new SSR markers to be developed in Musa. These additional markers could be a valuable resource for marker-assisted breeding, genetic diversity and genomic studies of Musa and related species.
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Affiliation(s)
- Manosh Kumar Biswas
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong Province, China
- Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
- The College of Life Science, South China Agricultural University, Guangzhou, China
| | - Yuxuan Liu
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Chunyu Li
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong Province, China
- Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
| | - Ou Sheng
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong Province, China
- Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
| | - Christoph Mayer
- Forschungsmuseum Alexander Koenig, Bonn, Adenauerallee 160, 53113 Bonn, Germany
| | - Ganjun Yi
- Institution of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong Province, China
- Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou, China
- * E-mail:
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Ortiz R, Swennen R. From crossbreeding to biotechnology-facilitated improvement of banana and plantain. Biotechnol Adv 2014; 32:158-69. [DOI: 10.1016/j.biotechadv.2013.09.010] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 09/16/2013] [Accepted: 09/24/2013] [Indexed: 12/30/2022]
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Davey MW, Gudimella R, Harikrishna JA, Sin LW, Khalid N, Keulemans J. "A draft Musa balbisiana genome sequence for molecular genetics in polyploid, inter- and intra-specific Musa hybrids". BMC Genomics 2013; 14:683. [PMID: 24094114 PMCID: PMC3852598 DOI: 10.1186/1471-2164-14-683] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Accepted: 09/24/2013] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Modern banana cultivars are primarily interspecific triploid hybrids of two species, Musa acuminata and Musa balbisiana, which respectively contribute the A- and B-genomes. The M. balbisiana genome has been associated with improved vigour and tolerance to biotic and abiotic stresses and is thus a target for Musa breeding programs. However, while a reference M. acuminata genome has recently been released (Nature 488:213-217, 2012), little sequence data is available for the corresponding B-genome.To address these problems we carried out Next Generation gDNA sequencing of the wild diploid M. balbisiana variety 'Pisang Klutuk Wulung' (PKW). Our strategy was to align PKW gDNA reads against the published A-genome and to extract the mapped consensus sequences for subsequent rounds of evaluation and gene annotation. RESULTS The resulting B-genome is 79% the size of the A-genome, and contains 36,638 predicted functional gene sequences which is nearly identical to the 36,542 of the A-genome. There is substantial sequence divergence from the A-genome at a frequency of 1 homozygous SNP per 23.1 bp, and a high degree of heterozygosity corresponding to one heterozygous SNP per 55.9 bp. Using expressed small RNA data, a similar number of microRNA sequences were predicted in both A- and B-genomes, but additional novel miRNAs were detected, including some that are unique to each genome. The usefulness of this B-genome sequence was evaluated by mapping RNA-seq data from a set of triploid AAA and AAB hybrids simultaneously to both genomes. Results for the plantains demonstrated the expected 2:1 distribution of reads across the A- and B-genomes, but for the AAA genomes, results show they contain regions of significant homology to the B-genome supporting proposals that there has been a history of interspecific recombination between homeologous A and B chromosomes in Musa hybrids. CONCLUSIONS We have generated and annotated a draft reference Musa B-genome and demonstrate that this can be used for molecular genetic mapping of gene transcripts and small RNA expression data from several allopolyploid banana cultivars. This draft therefore represents a valuable resource to support the study of metabolism in inter- and intraspecific triploid Musa hybrids and to help direct breeding programs.
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Affiliation(s)
- Mark W Davey
- Laboratory of Fruit Breeding and Biotechnology, Division of Crop Biotechnics, Department of Biosystems, Katholieke Universiteit Leuven, Willem de Croylaan 42, box 2427B-3001, Heverlee, Leuven, Belgium
| | - Ranganath Gudimella
- Centre for Research in Biotechnology for Agriculture and Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Jennifer Ann Harikrishna
- Centre for Research in Biotechnology for Agriculture and Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Lee Wan Sin
- Centre for Research in Biotechnology for Agriculture and Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Norzulaani Khalid
- Centre for Research in Biotechnology for Agriculture and Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Johan Keulemans
- Laboratory of Fruit Breeding and Biotechnology, Division of Crop Biotechnics, Department of Biosystems, Katholieke Universiteit Leuven, Willem de Croylaan 42, box 2427B-3001, Heverlee, Leuven, Belgium
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Passos MAN, de Cruz VO, Emediato FL, de Teixeira CC, Azevedo VCR, Brasileiro ACM, Amorim EP, Ferreira CF, Martins NF, Togawa RC, Pappas GJ, da Silva OB, Miller RNG. Analysis of the leaf transcriptome of Musa acuminata during interaction with Mycosphaerella musicola: gene assembly, annotation and marker development. BMC Genomics 2013; 14:78. [PMID: 23379821 PMCID: PMC3635893 DOI: 10.1186/1471-2164-14-78] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Accepted: 02/01/2013] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Although banana (Musa sp.) is an important edible crop, contributing towards poverty alleviation and food security, limited transcriptome datasets are available for use in accelerated molecular-based breeding in this genus. 454 GS-FLX Titanium technology was employed to determine the sequence of gene transcripts in genotypes of Musa acuminata ssp. burmannicoides Calcutta 4 and M. acuminata subgroup Cavendish cv. Grande Naine, contrasting in resistance to the fungal pathogen Mycosphaerella musicola, causal organism of Sigatoka leaf spot disease. To enrich for transcripts under biotic stress responses, full length-enriched cDNA libraries were prepared from whole plant leaf materials, both uninfected and artificially challenged with pathogen conidiospores. RESULTS The study generated 846,762 high quality sequence reads, with an average length of 334 bp and totalling 283 Mbp. De novo assembly generated 36,384 and 35,269 unigene sequences for M. acuminata Calcutta 4 and Cavendish Grande Naine, respectively. A total of 64.4% of the unigenes were annotated through Basic Local Alignment Search Tool (BLAST) similarity analyses against public databases.Assembled sequences were functionally mapped to Gene Ontology (GO) terms, with unigene functions covering a diverse range of molecular functions, biological processes and cellular components. Genes from a number of defense-related pathways were observed in transcripts from each cDNA library. Over 99% of contig unigenes mapped to exon regions in the reference M. acuminata DH Pahang whole genome sequence. A total of 4068 genic-SSR loci were identified in Calcutta 4 and 4095 in Cavendish Grande Naine. A subset of 95 potential defense-related gene-derived simple sequence repeat (SSR) loci were validated for specific amplification and polymorphism across M. acuminata accessions. Fourteen loci were polymorphic, with alleles per polymorphic locus ranging from 3 to 8 and polymorphism information content ranging from 0.34 to 0.82. CONCLUSIONS A large set of unigenes were characterized in this study for both M. acuminata Calcutta 4 and Cavendish Grande Naine, increasing the number of public domain Musa ESTs. This transcriptome is an invaluable resource for furthering our understanding of biological processes elicited during biotic stresses in Musa. Gene-based markers will facilitate molecular breeding strategies, forming the basis of genetic linkage mapping and analysis of quantitative trait loci.
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Affiliation(s)
- Marco A N Passos
- Universidade de Brasília, Campus Universitário Darcy Ribeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, CEP 70.910-900, Brasília, D.F, Brazil
| | - Viviane Oliveira de Cruz
- Universidade de Brasília, Campus Universitário Darcy Ribeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, CEP 70.910-900, Brasília, D.F, Brazil
| | - Flavia L Emediato
- Universidade de Brasília, Campus Universitário Darcy Ribeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, CEP 70.910-900, Brasília, D.F, Brazil
| | | | - Vânia C Rennó Azevedo
- EMBRAPA Recursos Genéticos e Biotecnologia, Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília, D.F, Brazil
| | - Ana C M Brasileiro
- EMBRAPA Recursos Genéticos e Biotecnologia, Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília, D.F, Brazil
| | - Edson P Amorim
- EMBRAPA Mandioca e Fruticultura Tropical, Rua Embrapa, CEP 44.380-000, Cruz das Almas, BA, Brazil
| | - Claudia F Ferreira
- EMBRAPA Mandioca e Fruticultura Tropical, Rua Embrapa, CEP 44.380-000, Cruz das Almas, BA, Brazil
| | - Natalia F Martins
- EMBRAPA Recursos Genéticos e Biotecnologia, Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília, D.F, Brazil
| | - Roberto C Togawa
- EMBRAPA Recursos Genéticos e Biotecnologia, Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília, D.F, Brazil
| | - Georgios J Pappas
- Universidade de Brasília, Campus Universitário Darcy Ribeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, CEP 70.910-900, Brasília, D.F, Brazil
| | - Orzenil Bonfim da Silva
- EMBRAPA Recursos Genéticos e Biotecnologia, Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília, D.F, Brazil
| | - Robert NG Miller
- Universidade de Brasília, Campus Universitário Darcy Ribeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, CEP 70.910-900, Brasília, D.F, Brazil
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Genomic characterization of DArT markers based on high-density linkage analysis and physical mapping to the Eucalyptus genome. PLoS One 2012; 7:e44684. [PMID: 22984541 PMCID: PMC3439404 DOI: 10.1371/journal.pone.0044684] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 08/06/2012] [Indexed: 01/07/2023] Open
Abstract
Diversity Arrays Technology (DArT) provides a robust, high throughput, cost-effective method to query thousands of sequence polymorphisms in a single assay. Despite the extensive use of this genotyping platform for numerous plant species, little is known regarding the sequence attributes and genome-wide distribution of DArT markers. We investigated the genomic properties of the 7,680 DArT marker probes of a Eucalyptus array, by sequencing them, constructing a high density linkage map and carrying out detailed physical mapping analyses to the Eucalyptus grandis reference genome. A consensus linkage map with 2,274 DArT markers anchored to 210 microsatellites and a framework map, with improved support for ordering, displayed extensive collinearity with the genome sequence. Only 1.4 Mbp of the 75 Mbp of still unplaced scaffold sequence was captured by 45 linkage mapped but physically unaligned markers to the 11 main Eucalyptus pseudochromosomes, providing compelling evidence for the quality and completeness of the current Eucalyptus genome assembly. A highly significant correspondence was found between the locations of DArT markers and predicted gene models, while most of the 89 DArT probes unaligned to the genome correspond to sequences likely absent in E. grandis, consistent with the pan-genomic feature of this multi-Eucalyptus species DArT array. These comprehensive linkage-to-physical mapping analyses provide novel data regarding the genomic attributes of DArT markers in plant genomes in general and for Eucalyptus in particular. DArT markers preferentially target the gene space and display a largely homogeneous distribution across the genome, thereby providing superb coverage for mapping and genome-wide applications in breeding and diversity studies. Data reported on these ubiquitous properties of DArT markers will be particularly valuable to researchers working on less-studied crop species who already count on DArT genotyping arrays but for which no reference genome is yet available to allow such detailed characterization.
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Rabbi IY, Kulembeka HP, Masumba E, Marri PR, Ferguson M. An EST-derived SNP and SSR genetic linkage map of cassava (Manihot esculenta Crantz). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2012; 125:329-42. [PMID: 22419105 DOI: 10.1007/s00122-012-1836-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 02/24/2012] [Indexed: 05/05/2023]
Abstract
Cassava (Manihot esculenta Crantz) is one of the most important food security crops in the tropics and increasingly being adopted for agro-industrial processing. Genetic improvement of cassava can be enhanced through marker-assisted breeding. For this, appropriate genomic tools are required to dissect the genetic architecture of economically important traits. Here, a genome-wide SNP-based genetic map of cassava anchored in SSRs is presented. An outbreeder full-sib (F1) family was genotyped on two independent SNP assay platforms: an array of 1,536 SNPs on Illumina's GoldenGate platform was used to genotype a first batch of 60 F1. Of the 1,358 successfully converted SNPs, 600 which were polymorphic in at least one of the parents and was subsequently converted to KBiosciences' KASPar assay platform for genotyping 70 additional F1. High-precision genotyping of 163 informative SSRs using capillary electrophoresis was also carried out. Linkage analysis resulted in a final linkage map of 1,837 centi-Morgans (cM) containing 568 markers (434 SNPs and 134 SSRs) distributed across 19 linkage groups. The average distance between adjacent markers was 3.4 cM. About 94.2% of the mapped SNPs and SSRs have also been localized on scaffolds of version 4.1 assembly of the cassava draft genome sequence. This more saturated genetic linkage map of cassava that combines SSR and SNP markers should find several applications in the improvement of cassava including aligning scaffolds of the cassava genome sequence, genetic analyses of important agro-morphological traits, studying the linkage disequilibrium landscape and comparative genomics.
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Affiliation(s)
- Ismail Yusuf Rabbi
- International Institute of Tropical Agriculture, PMB 5320 Oyo Road, Ibadan, Nigeria.
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27
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Hippolyte I, Jenny C, Gardes L, Bakry F, Rivallan R, Pomies V, Cubry P, Tomekpe K, Risterucci AM, Roux N, Rouard M, Arnaud E, Kolesnikova-Allen M, Perrier X. Foundation characteristics of edible Musa triploids revealed from allelic distribution of SSR markers. ANNALS OF BOTANY 2012; 109:937-51. [PMID: 22323428 PMCID: PMC3310492 DOI: 10.1093/aob/mcs010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Accepted: 12/19/2011] [Indexed: 05/04/2023]
Abstract
BACKGROUND AND AIMS The production of triploid banana and plantain (Musa spp.) cultivars with improved characteristics (e.g. greater disease resistance or higher yield), while still preserving the main features of current popular cultivars (e.g. taste and cooking quality), remains a major challenge for Musa breeders. In this regard, breeders require a sound knowledge of the lineage of the current sterile triploid cultivars, to select diploid parents that are able to transmit desirable traits, together with a breeding strategy ensuring final triploidization and sterility. Highly polymorphic single sequence repeats (SSRs) are valuable markers for investigating phylogenetic relationships. METHODS Here, the allelic distribution of each of 22 SSR loci across 561 Musa accessions is analysed. KEY RESULTS AND CONCLUSIONS We determine the closest diploid progenitors of the triploid 'Cavendish' and 'Gros Michel' subgroups, valuable information for breeding programmes. Nevertheless, in establishing the likely monoclonal origin of the main edible triploid banana subgroups (i.e. 'Cavendish', 'Plantain' and 'Mutika-Lujugira'), we postulated that the huge phenotypic diversity observed within these subgroups did not result from gamete recombination, but rather from epigenetic regulations. This emphasizes the need to investigate the regulatory mechanisms of genome expression on a unique model in the plant kingdom. We also propose experimental standards to compare additional and independent genotyping data for reference.
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Affiliation(s)
- I Hippolyte
- CIRAD, UMR AGAP, Montferrier sur Lez, France.
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28
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Passos MAN, de Oliveira Cruz V, Emediato FL, de Camargo Teixeira C, Souza MT, Matsumoto T, Rennó Azevedo VC, Ferreira CF, Amorim EP, de Alencar Figueiredo LF, Martins NF, de Jesus Barbosa Cavalcante M, Baurens FC, da Silva OB, Pappas GJ, Pignolet L, Abadie C, Ciampi AY, Piffanelli P, Miller RNG. Development of expressed sequence tag and expressed sequence tag-simple sequence repeat marker resources for Musa acuminata. AOB PLANTS 2012; 2012:pls030. [PMID: 23240072 PMCID: PMC3521319 DOI: 10.1093/aobpla/pls030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2012] [Accepted: 09/14/2012] [Indexed: 05/14/2023]
Abstract
BACKGROUND AND AIMS Banana (Musa acuminata) is a crop contributing to global food security. Many varieties lack resistance to biotic stresses, due to sterility and narrow genetic background. The objective of this study was to develop an expressed sequence tag (EST) database of transcripts expressed during compatible and incompatible banana-Mycosphaerella fijiensis (Mf) interactions. Black leaf streak disease (BLSD), caused by Mf, is a destructive disease of banana. Microsatellite markers were developed as a resource for crop improvement. METHODOLOGY cDNA libraries were constructed from in vitro-infected leaves from BLSD-resistant M. acuminata ssp. burmaniccoides Calcutta 4 (MAC4) and susceptible M. acuminata cv. Cavendish Grande Naine (MACV). Clones were 5'-end Sanger sequenced, ESTs assembled with TGICL and unigenes annotated using BLAST, Blast2GO and InterProScan. Mreps was used to screen for simple sequence repeats (SSRs), with markers evaluated for polymorphism using 20 diploid (AA) M. acuminata accessions contrasting in resistance to Mycosphaerella leaf spot diseases. PRINCIPAL RESULTS A total of 9333 high-quality ESTs were obtained for MAC4 and 3964 for MACV, which assembled into 3995 unigenes. Of these, 2592 displayed homology to genes encoding proteins with known or putative function, and 266 to genes encoding proteins with unknown function. Gene ontology (GO) classification identified 543 GO terms, 2300 unigenes were assigned to EuKaryotic orthologous group categories and 312 mapped to Kyoto Encyclopedia of Genes and Genomes pathways. A total of 624 SSR loci were identified, with trinucleotide repeat motifs the most abundant in MAC4 (54.1 %) and MACV (57.6 %). Polymorphism across M. acuminata accessions was observed with 75 markers. Alleles per polymorphic locus ranged from 2 to 8, totalling 289. The polymorphism information content ranged from 0.08 to 0.81. CONCLUSIONS This EST collection offers a resource for studying functional genes, including transcripts expressed in banana-Mf interactions. Markers are applicable for genetic mapping, diversity characterization and marker-assisted breeding.
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Affiliation(s)
- Marco A. N. Passos
- Universidade de Brasília,
Campus Universitário Darcy Ribeiro,
Instituto de Ciências Biológicas, Asa
Norte, CEP 70910-900, Brasília, DF, Brazil
| | - Viviane de Oliveira Cruz
- Universidade de Brasília,
Campus Universitário Darcy Ribeiro,
Instituto de Ciências Biológicas, Asa
Norte, CEP 70910-900, Brasília, DF, Brazil
| | - Flavia L. Emediato
- Universidade de Brasília,
Campus Universitário Darcy Ribeiro,
Instituto de Ciências Biológicas, Asa
Norte, CEP 70910-900, Brasília, DF, Brazil
| | - Cristiane de Camargo Teixeira
- Postgraduate Program in Genomic Science and
Biotechnology, Universidade Católica de
Brasília, SGAN 916, Módulo B, CEP 70.790-160,
Brasília, DF, Brazil
| | - Manoel T. Souza
- EMBRAPA Recursos Genéticos e Biotecnologia,
Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília,
DF, Brazil
| | - Takashi Matsumoto
- National Institute of Agrobiological Resources,
Tsukuba 305-8602, Japan
| | - Vânia C. Rennó Azevedo
- EMBRAPA Recursos Genéticos e Biotecnologia,
Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília,
DF, Brazil
| | - Claudia F. Ferreira
- EMBRAPA Mandioca e Fruticultura Tropical, Rua
Embrapa, CEP 44380-000, Cruz das Almas, BA, Brazil
| | - Edson P. Amorim
- EMBRAPA Mandioca e Fruticultura Tropical, Rua
Embrapa, CEP 44380-000, Cruz das Almas, BA, Brazil
| | - Lucio Flavio de Alencar Figueiredo
- Universidade de Brasília,
Campus Universitário Darcy Ribeiro,
Instituto de Ciências Biológicas, Asa
Norte, CEP 70910-900, Brasília, DF, Brazil
| | - Natalia F. Martins
- EMBRAPA Recursos Genéticos e Biotecnologia,
Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília,
DF, Brazil
| | | | | | - Orzenil Bonfim da Silva
- EMBRAPA Recursos Genéticos e Biotecnologia,
Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília,
DF, Brazil
| | - Georgios J. Pappas
- Universidade de Brasília,
Campus Universitário Darcy Ribeiro,
Instituto de Ciências Biológicas, Asa
Norte, CEP 70910-900, Brasília, DF, Brazil
- EMBRAPA Recursos Genéticos e Biotecnologia,
Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília,
DF, Brazil
| | - Luc Pignolet
- CIRAD/UMR BGPI, TA A 54/K Campus International de
Baillarguet, 34398 Montpellier Cedex 5, France
| | - Catherine Abadie
- CIRAD/UMR BGPI, TA A 54/K Campus International de
Baillarguet, 34398 Montpellier Cedex 5, France
| | - Ana Y. Ciampi
- EMBRAPA Recursos Genéticos e Biotecnologia,
Parque Estação Biológica, CP 02372, CEP 70.770-900, Brasília,
DF, Brazil
| | - Pietro Piffanelli
- CIRAD/UMR DAP 1098, TA A 96/03 Avenue Agropolis,
34098 Montpellier Cedex 5, France
- Present address: Genomics
Platform at Parco Tecnologico Padano, Via Einstein, Località Cascina Codazza, 26900
Lodi, Italy
| | - Robert N. G. Miller
- Universidade de Brasília,
Campus Universitário Darcy Ribeiro,
Instituto de Ciências Biológicas, Asa
Norte, CEP 70910-900, Brasília, DF, Brazil
- Corresponding author's e-mail address:
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Abstract
Original multidisciplinary research hereby clarifies the complex geodomestication pathways that generated the vast range of banana cultivars (cvs). Genetic analyses identify the wild ancestors of modern-day cvs and elucidate several key stages of domestication for different cv groups. Archaeology and linguistics shed light on the historical roles of people in the movement and cultivation of bananas from New Guinea to West Africa during the Holocene. The historical reconstruction of domestication processes is essential for breeding programs seeking to diversify and improve banana cvs for the future.
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30
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Christelová P, Valárik M, Hřibová E, Van den houwe I, Channelière S, Roux N, Doležel J. A platform for efficient genotyping in Musa using microsatellite markers. AOB PLANTS 2011; 2011:plr024. [PMID: 22476494 PMCID: PMC3185971 DOI: 10.1093/aobpla/plr024] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Accepted: 08/16/2011] [Indexed: 05/04/2023]
Abstract
BACKGROUND AND AIMS Bananas and plantains (Musa spp.) are one of the major fruit crops worldwide with acknowledged importance as a staple food for millions of people. The rich genetic diversity of this crop is, however, endangered by diseases, adverse environmental conditions and changed farming practices, and the need for its characterization and preservation is urgent. With the aim of providing a simple and robust approach for molecular characterization of Musa species, we developed an optimized genotyping platform using 19 published simple sequence repeat markers. METHODOLOGY The genotyping system is based on 19 microsatellite loci, which are scored using fluorescently labelled primers and high-throughput capillary electrophoresis separation with high resolution. This genotyping platform was tested and optimized on a set of 70 diploid and 38 triploid banana accessions. PRINCIPAL RESULTS The marker set used in this study provided enough polymorphism to discriminate between individual species, subspecies and subgroups of all accessions of Musa. Likewise, the capability of identifying duplicate samples was confirmed. Based on the results of a blind test, the genotyping system was confirmed to be suitable for characterization of unknown accessions. CONCLUSIONS Here we report on the first complex and standardized platform for molecular characterization of Musa germplasm that is ready to use for the wider Musa research and breeding community. We believe that this genotyping system offers a versatile tool that can accommodate all possible requirements for characterizing Musa diversity, and is economical for samples ranging from one to many accessions.
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Affiliation(s)
- Pavla Christelová
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany, Sokolovská 6, Olomouc CZ-77200, Czech Republic
| | - Miroslav Valárik
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany, Sokolovská 6, Olomouc CZ-77200, Czech Republic
| | - Eva Hřibová
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany, Sokolovská 6, Olomouc CZ-77200, Czech Republic
| | - Ines Van den houwe
- Laboratory of Tropical Crop Improvement, Katholieke Universiteit Leuven, Kasteelpark Arenberg 13, B-3001 Leuven, Belgium
| | - Stéphanie Channelière
- Bioversity International, Parc Scientifique Agropolis II, Montpellier Cedex 5, 34397, France
| | - Nicolas Roux
- Bioversity International, Parc Scientifique Agropolis II, Montpellier Cedex 5, 34397, France
| | - Jaroslav Doležel
- Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany, Sokolovská 6, Olomouc CZ-77200, Czech Republic
- Corresponding author's e-mail address:
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De Langhe E, Hribová E, Carpentier S, Dolezel J, Swennen R. Did backcrossing contribute to the origin of hybrid edible bananas? ANNALS OF BOTANY 2010; 106:849-57. [PMID: 20858591 PMCID: PMC2990659 DOI: 10.1093/aob/mcq187] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Revised: 05/21/2010] [Accepted: 08/25/2010] [Indexed: 05/20/2023]
Abstract
BACKGROUND Bananas and plantains (Musa spp.) provide a staple food for many millions of people living in the humid tropics. The cultivated varieties (cultivars) are seedless parthenocarpic clones of which the origin remains unclear. Many are believed to be diploid and polyploid hybrids involving the A genome diploid M. acuminata and the B genome M. balbisiana, with the hybrid genomes consisting of a simple combination of the parental ones. Thus the genomic constitution of the diploids has been classified as AB, and that of the triploids as AAB or ABB. However, the morphology of many accessions is biased towards either the A or B phenotype and does not conform to predictions based on these genomic formulae. SCOPE On the basis of published cytotypes (mitochondrial and chloroplast genomes), we speculate here that the hybrid banana genomes are unbalanced with respect to the parental ones, and/or that inter-genome translocation chromosomes are relatively common. We hypothesize that the evolution under domestication of cultivated banana hybrids is more likely to have passed through an intermediate hybrid, which was then involved in a variety of backcrossing events. We present experimental data supporting our hypothesis and we propose a set of experimental approaches to test it, thereby indicating other possibilities for explaining some of the unbalanced genome expressions. Progress in this area would not only throw more light on the origin of one of the most important crops, but provide data of general relevance for the evolution under domestication of many other important clonal crops. At the same time, a complex origin of the cultivated banana hybrids would imply a reconsideration of current breeding strategies.
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Affiliation(s)
- Edmond De Langhe
- Laboratory of Tropical Crop Improvement, Katholieke Universiteit Leuven, Kasteelpark Arenberg 13 bus 2455, 3001 Leuven, Belgium.
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32
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Langridge P, Fleury D. Making the most of 'omics' for crop breeding. Trends Biotechnol 2010; 29:33-40. [PMID: 21030098 DOI: 10.1016/j.tibtech.2010.09.006] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 09/23/2010] [Accepted: 09/27/2010] [Indexed: 11/30/2022]
Abstract
Adoption of new breeding technologies is likely to underpin future gains in crop productivity. The rapid advances in 'omics' technologies provide an opportunity to generate new datasets for crop species. Integration of genome and functional omics data with genetic and phenotypic information is leading to the identification of genes and pathways responsible for important agronomic phenotypes. In addition, high-throughput genotyping technologies enable the screening of large germplasm collections to identify novel alleles from diverse sources, thus offering a major expansion in the variation available for breeding. In this review, we discuss these advances, which have opened the door to new techniques for construction and screening of breeding populations, to increase ultimately the efficiency of selection and accelerate the rates of genetic gain.
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Affiliation(s)
- Peter Langridge
- Australian Centre for Plant Functional Genomics ACPFG, University of Adelaide, PMB1, Glen Osmond SA 5064, Australia
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Varshney RK, Glaszmann JC, Leung H, Ribaut JM. More genomic resources for less-studied crops. Trends Biotechnol 2010; 28:452-60. [PMID: 20692061 DOI: 10.1016/j.tibtech.2010.06.007] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 06/23/2010] [Accepted: 06/27/2010] [Indexed: 01/14/2023]
Abstract
Many of the crop species considered to be minor on a global scale, yet are important locally for food security in the developing world, have remained less-studied crops. Recent years have witnessed the development of large-scale genomic and genetic resources, including simple sequence repeat, single nucleotide polymorphism and diversity array technology markers, expressed sequence tags or transcript reads, bacterial artificial chromosome libraries, genetic and physical maps, and genetic stocks with rich genetic diversity, such as core reference sets and introgression lines in these crops. These resources have the potential to accelerate gene discovery and initiate molecular breeding in these crops, thereby enhancing crop productivity to ensure food security in developing countries.
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Affiliation(s)
- Rajeev K Varshney
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru 502324, A.P., India.
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Miller RN, Passos MA, Menezes NN, Souza MT, do Carmo Costa MM, Rennó Azevedo VC, Amorim EP, Pappas GJ, Ciampi AY. Characterization of novel microsatellite markers in Musa acuminata subsp. burmannicoides, var. Calcutta 4. BMC Res Notes 2010; 3:148. [PMID: 20507605 PMCID: PMC2893197 DOI: 10.1186/1756-0500-3-148] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Accepted: 05/27/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Banana is a nutritionally important crop across tropical and sub-tropical countries in sub-Saharan Africa, Central and South America and Asia. Although cultivars have evolved from diploid, triploid and tetraploid wild Asian species of Musa acuminata (A genome) and Musa balbisiana (B genome), many of today's commercial cultivars are sterile triploids or diploids, with fruit developing via parthenocarpy. As a result of restricted genetic variation, improvement has been limited, resulting in a crop frequently lacking resistance to pests and disease. Considering the importance of molecular tools to facilitate development of disease resistant genotypes, the objectives of this study were to develop polymorphic microsatellite markers from BAC clone sequences for M. acuminata subsp. burmannicoides, var. Calcutta 4. This wild diploid species is used as a donor cultivar in breeding programs as a source of resistance to diverse biotic stresses. FINDINGS Microsatellite sequences were identified from five Calcutta 4 BAC consensi datasets. Specific primers were designed for 41 loci. Isolated di-nucleotide repeat motifs were the most abundant, followed by tri-nucleotides. From 33 tested loci, 20 displayed polymorphism when screened across 21 diploid M. acuminata accessions, contrasting in resistance to Sigatoka diseases. The number of alleles per SSR locus ranged from two to four, with a total of 56. Six repeat classes were identified, with di-nucleotides the most abundant. Expected heterozygosity values for polymorphic markers ranged from 0.31 to 0.75. CONCLUSIONS This is the first report identifying polymorphic microsatellite markers from M. acuminata subsp. burmannicoides, var. Calcutta 4 across accessions contrasting in resistance to Sigatoka diseases. These BAC-derived polymorphic microsatellite markers are a useful resource for banana, applicable for genetic map development, germplasm characterization, evolutionary studies and marker assisted selection for traits.
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Affiliation(s)
- Robert Ng Miller
- Universidade de Brasília, Campus Universitário Darcy Ribeiro, Instituto de Ciências Biológicas, Departamento de Biologia Celular, Asa Norte, Brasília, Brazil.
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