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Li N, Zhou J, Zhang W, Liu W, Wang B, She H, Mirbahar AA, Li S, Zhang Y, Gao W, Qian W, Deng C. A rapid method for assembly of single chromosome and identification of sex determination region based on single-chromosome sequencing. THE NEW PHYTOLOGIST 2023; 240:892-903. [PMID: 37533136 DOI: 10.1111/nph.19176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 07/08/2023] [Indexed: 08/04/2023]
Abstract
The sex-determining-region (SDR) may offer the best prospects for studying sex-determining gene, recombination suppression, and chromosome heteromorphism. However, current progress of SDR identification and cloning showed following shortcomings: large near-isogenic lines need to be constructed, and a relatively large population is needed; the cost of whole-genome sequencing and assembly is high. Herein, the X/Y chromosomes of Spinacia oleracea L. subsp. turkestanica were successfully microdissected and assembled using single-chromosome sequencing. The assembly length of X and Y chromosome is c. 192.1 and 195.2 Mb, respectively. Three large inversions existed between X and Y chromosome. The SDR size of X and Y chromosome is c. 13.2 and 24.1 Mb, respectively. MSY region and six male-biased genes were identified. A Y-chromosome-specific marker in SDR was constructed and used to verify the chromosome assembly quality at cytological level via fluorescence in situ hybridization. Meanwhile, it was observed that the SDR located on long arm of Y chromosome and near the centromere. Overall, a technical system was successfully established for rapid cloning the SDR and it is also applicable to rapid assembly of specific chromosome in other plants. Furthermore, this study laid a foundation for studying the molecular mechanism of sex chromosome evolution in spinach.
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Affiliation(s)
- Ning Li
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Jian Zhou
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Wanqing Zhang
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Wenjia Liu
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Bingxin Wang
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Hongbing She
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Ameer Ahmed Mirbahar
- Date Palm Research Institute, Shah Abdul Latif University, Khairpur, Sindh, 66020, Pakistan
| | - Shufen Li
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Yulan Zhang
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Wujun Gao
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Wei Qian
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Chuanliang Deng
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
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Gatto KP, Timoshevskaya N, Smith JJ, Lourenço LB. Sequencing of laser captured Z and W chromosomes of the tocantins paradoxical frog (Pseudis tocantins) provides insights on repeatome and chromosomal homology. J Evol Biol 2022; 35:1659-1674. [PMID: 35642451 DOI: 10.1111/jeb.14027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/06/2022] [Accepted: 05/09/2022] [Indexed: 11/30/2022]
Abstract
Pseudis tocantins is the only frog species of the hylid genus Pseudis that possesses highly heteromorphic sex chromosomes. Z and W chromosomes of Ps. tocantins differ in size, morphology, position of the nucleolar organizer region (NOR) and the amount and distribution of heterochromatin. A chromosomal inversion and heterochromatin amplification on the W chromosome were previously inferred to be involved in the evolution of this sex chromosome pair. Despite these findings, knowledge related to the molecular composition of the large heterochromatic band of this W chromosome is restricted to the PcP190 satellite DNA, and no data are available regarding the gene content of either the W or the Z chromosome of Ps. tocantins. Here, we sequenced microdissected Z and W chromosomes of this species to further resolve their molecular composition. Comparative genomic analysis suggests that Ps. tocantins sex chromosomes are likely homologous to chromosomes 4 and 10 of Xenopus tropicalis. Analyses of the repetitive DNA landscape in the Z and W assemblies allowed for the identification of several transposable elements and putative satellite DNA sequences. Finally, some transposable elements from the W assembly were found to be highly diverse and divergent from elements found elsewhere in the genome, suggesting a rapid amplification of these elements on the W chromosome.
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Affiliation(s)
- Kaleb Pretto Gatto
- Laboratory of Chromosome Studies, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas, Brazil.,Laboratory of Herpetology and Aquaculture Center, Department of Zoology, Institute of Biosciences, São Paulo State University, Rio Claro, Brazil
| | - Nataliya Timoshevskaya
- Department of Biology, College of Arts and Sciences, University of Kentucky, Lexington, Kentucky, USA
| | - Jeramiah J Smith
- Department of Biology, College of Arts and Sciences, University of Kentucky, Lexington, Kentucky, USA
| | - Luciana Bolsoni Lourenço
- Laboratory of Chromosome Studies, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas, Brazil
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Shirasawa K, Harada D, Hirakawa H, Isobe S, Kole C. Chromosome-level de novo genome assemblies of over 100 plant species. BREEDING SCIENCE 2021; 71:117-124. [PMID: 34377059 PMCID: PMC8329882 DOI: 10.1270/jsbbs.20146] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 11/25/2020] [Indexed: 05/17/2023]
Abstract
Genome sequence analysis in higher plants began with the whole-genome sequencing of Arabidopsis thaliana. Owing to the great advances in sequencing technologies, also known as next-generation sequencing (NGS) technologies, genomes of more than 400 plant species have been sequenced to date. Long-read sequencing technologies, together with sequence scaffolding methods, have enabled the synthesis of chromosome-level de novo genome sequence assemblies, which has further allowed comparative analysis of the structural features of multiple plant genomes, thus elucidating the evolutionary history of plants. However, the quality of the assembled chromosome-level sequences varies among plant species. In this review, we summarize the status of chromosome-level assemblies of 114 plant species, with genome sizes ranging from 125 Mb to 16.9 Gb. While the average genome coverage of the assembled sequences reached up to 89.1%, the average coverage of chromosome-level pseudomolecules was 73.3%. Thus, further improvements in sequencing technologies and scaffolding, and data analysis methods, are required to establish gap-free telomere-to-telomere genome sequence assemblies. With the forthcoming new technologies, we are going to enter into a new genomics era where pan-genomics and the >1,000 or >1 million genomes' project will be routine in higher plants.
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Affiliation(s)
- Kenta Shirasawa
- Kazusa DNA Research Institute, 2-6-7 Kazusa-Kamatari, Kisarazu, Chiba 292-0818, Japan
| | - Daijiro Harada
- Kazusa DNA Research Institute, 2-6-7 Kazusa-Kamatari, Kisarazu, Chiba 292-0818, Japan
| | - Hideki Hirakawa
- Kazusa DNA Research Institute, 2-6-7 Kazusa-Kamatari, Kisarazu, Chiba 292-0818, Japan
| | - Sachiko Isobe
- Kazusa DNA Research Institute, 2-6-7 Kazusa-Kamatari, Kisarazu, Chiba 292-0818, Japan
| | - Chittaranjan Kole
- ICAR-National Institute for Plant Biotechnology, Pusa, New Delhi 110012, India
- Corresponding author (e-mail: )
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Sheng M, Gao M, Wang L, Ren X. Chromosome Microdissection and Microcloning: Technique and Application in the Plant Sciences. CYTOLOGIA 2020. [DOI: 10.1508/cytologia.85.93] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Maoyin Sheng
- Molecular Genetics Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science
- National Engineering Research Centre for Karst Rocky Desertification Control, Guizhou Normal University
- Guizhou Engineering Laboratory for Karst Rocky Desertification Control and Derivative Industry
| | - Mengdi Gao
- National Engineering Research Centre for Karst Rocky Desertification Control, Guizhou Normal University
- Guizhou Engineering Laboratory for Karst Rocky Desertification Control and Derivative Industry
| | - Linjiao Wang
- National Engineering Research Centre for Karst Rocky Desertification Control, Guizhou Normal University
- Guizhou Engineering Laboratory for Karst Rocky Desertification Control and Derivative Industry
| | - Xuelian Ren
- Molecular Genetics Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science
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