Syntenic relationships between cucumber (<it>Cucumis sativus </it>L.) and melon (<it>C. melo </it>L.) chromosomes as revealed by comparative genetic mapping
<p>Abstract</p> <p>Background</p> <p>Cucumber, <it>Cucumis sativus </it>L. (2n = 2 × = 14) and melon, <it>C. melo </it>L. (2n = 2 × = 24) are two important vegetable species in the genus <it>Cucumis </it>(family Cucurbitaceae). Both s...
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| Format: | Article |
| Language: | English |
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BMC
2011-08-01
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| Series: | BMC Genomics |
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| Online Access: | http://www.biomedcentral.com/1471-2164/12/396 |
| _version_ | 1818661723474755584 |
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| author | Staub Jack E Zalapa Juan Garcia-Mas Jordi Li Yuhong Yang Luming Cuevas Hugo E Li Dawei Luan Feishi Reddy Umesh He Xiaoming Gong Zhenhui Weng Yiqun |
| author_facet | Staub Jack E Zalapa Juan Garcia-Mas Jordi Li Yuhong Yang Luming Cuevas Hugo E Li Dawei Luan Feishi Reddy Umesh He Xiaoming Gong Zhenhui Weng Yiqun |
| author_sort | Staub Jack E |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Cucumber, <it>Cucumis sativus </it>L. (2n = 2 × = 14) and melon, <it>C. melo </it>L. (2n = 2 × = 24) are two important vegetable species in the genus <it>Cucumis </it>(family Cucurbitaceae). Both species have an Asian origin that diverged approximately nine million years ago. Cucumber is believed to have evolved from melon through chromosome fusion, but the details of this process are largely unknown. In this study, comparative genetic mapping between cucumber and melon was conducted to examine syntenic relationships of their chromosomes.</p> <p>Results</p> <p>Using two melon mapping populations, 154 and 127 cucumber SSR markers were added onto previously reported F<sub>2</sub>- and RIL-based genetic maps, respectively. A consensus melon linkage map was developed through map integration, which contained 401 co-dominant markers in 12 linkage groups including 199 markers derived from the cucumber genome. Syntenic relationships between melon and cucumber chromosomes were inferred based on associations between markers on the consensus melon map and cucumber draft genome scaffolds. It was determined that cucumber Chromosome 7 was syntenic to melon Chromosome I. Cucumber Chromosomes 2 and 6 each contained genomic regions that were syntenic with melon chromosomes III+V+XI and III+VIII+XI, respectively. Likewise, cucumber Chromosomes 1, 3, 4, and 5 each was syntenic with genomic regions of two melon chromosomes previously designated as II+XII, IV+VI, VII+VIII, and IX+X, respectively. However, the marker orders in several syntenic blocks on these consensus linkage maps were not co-linear suggesting that more complicated structural changes beyond simple chromosome fusion events have occurred during the evolution of cucumber.</p> <p>Conclusions</p> <p>Comparative mapping conducted herein supported the hypothesis that cucumber chromosomes may be the result of chromosome fusion from a 24-chromosome progenitor species. Except for a possible inversion, cucumber Chromosome 7 has largely remained intact in the past nine million years since its divergence from melon. Meanwhile, many structural changes may have occurred during the evolution of the remaining six cucumber chromosomes. Further characterization of the genomic nature of <it>Cucumis </it>species closely related to cucumber and melon might provide a better understanding of the evolutionary history leading to modern cucumber.</p> |
| first_indexed | 2024-12-17T04:49:35Z |
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| institution | Directory Open Access Journal |
| issn | 1471-2164 |
| language | English |
| last_indexed | 2024-12-17T04:49:35Z |
| publishDate | 2011-08-01 |
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| series | BMC Genomics |
| spelling | doaj.art-e0b943285def420f924fa91181a310612022-12-21T22:02:56ZengBMCBMC Genomics1471-21642011-08-0112139610.1186/1471-2164-12-396Syntenic relationships between cucumber (<it>Cucumis sativus </it>L.) and melon (<it>C. melo </it>L.) chromosomes as revealed by comparative genetic mappingStaub Jack EZalapa JuanGarcia-Mas JordiLi YuhongYang LumingCuevas Hugo ELi DaweiLuan FeishiReddy UmeshHe XiaomingGong ZhenhuiWeng Yiqun<p>Abstract</p> <p>Background</p> <p>Cucumber, <it>Cucumis sativus </it>L. (2n = 2 × = 14) and melon, <it>C. melo </it>L. (2n = 2 × = 24) are two important vegetable species in the genus <it>Cucumis </it>(family Cucurbitaceae). Both species have an Asian origin that diverged approximately nine million years ago. Cucumber is believed to have evolved from melon through chromosome fusion, but the details of this process are largely unknown. In this study, comparative genetic mapping between cucumber and melon was conducted to examine syntenic relationships of their chromosomes.</p> <p>Results</p> <p>Using two melon mapping populations, 154 and 127 cucumber SSR markers were added onto previously reported F<sub>2</sub>- and RIL-based genetic maps, respectively. A consensus melon linkage map was developed through map integration, which contained 401 co-dominant markers in 12 linkage groups including 199 markers derived from the cucumber genome. Syntenic relationships between melon and cucumber chromosomes were inferred based on associations between markers on the consensus melon map and cucumber draft genome scaffolds. It was determined that cucumber Chromosome 7 was syntenic to melon Chromosome I. Cucumber Chromosomes 2 and 6 each contained genomic regions that were syntenic with melon chromosomes III+V+XI and III+VIII+XI, respectively. Likewise, cucumber Chromosomes 1, 3, 4, and 5 each was syntenic with genomic regions of two melon chromosomes previously designated as II+XII, IV+VI, VII+VIII, and IX+X, respectively. However, the marker orders in several syntenic blocks on these consensus linkage maps were not co-linear suggesting that more complicated structural changes beyond simple chromosome fusion events have occurred during the evolution of cucumber.</p> <p>Conclusions</p> <p>Comparative mapping conducted herein supported the hypothesis that cucumber chromosomes may be the result of chromosome fusion from a 24-chromosome progenitor species. Except for a possible inversion, cucumber Chromosome 7 has largely remained intact in the past nine million years since its divergence from melon. Meanwhile, many structural changes may have occurred during the evolution of the remaining six cucumber chromosomes. Further characterization of the genomic nature of <it>Cucumis </it>species closely related to cucumber and melon might provide a better understanding of the evolutionary history leading to modern cucumber.</p>http://www.biomedcentral.com/1471-2164/12/396CucumberMelon<it>Cucumis</it>MicrosatelliteComparative mappingChromosome evolution |
| spellingShingle | Staub Jack E Zalapa Juan Garcia-Mas Jordi Li Yuhong Yang Luming Cuevas Hugo E Li Dawei Luan Feishi Reddy Umesh He Xiaoming Gong Zhenhui Weng Yiqun Syntenic relationships between cucumber (<it>Cucumis sativus </it>L.) and melon (<it>C. melo </it>L.) chromosomes as revealed by comparative genetic mapping BMC Genomics Cucumber Melon <it>Cucumis</it> Microsatellite Comparative mapping Chromosome evolution |
| title | Syntenic relationships between cucumber (<it>Cucumis sativus </it>L.) and melon (<it>C. melo </it>L.) chromosomes as revealed by comparative genetic mapping |
| title_full | Syntenic relationships between cucumber (<it>Cucumis sativus </it>L.) and melon (<it>C. melo </it>L.) chromosomes as revealed by comparative genetic mapping |
| title_fullStr | Syntenic relationships between cucumber (<it>Cucumis sativus </it>L.) and melon (<it>C. melo </it>L.) chromosomes as revealed by comparative genetic mapping |
| title_full_unstemmed | Syntenic relationships between cucumber (<it>Cucumis sativus </it>L.) and melon (<it>C. melo </it>L.) chromosomes as revealed by comparative genetic mapping |
| title_short | Syntenic relationships between cucumber (<it>Cucumis sativus </it>L.) and melon (<it>C. melo </it>L.) chromosomes as revealed by comparative genetic mapping |
| title_sort | syntenic relationships between cucumber it cucumis sativus it l and melon it c melo it l chromosomes as revealed by comparative genetic mapping |
| topic | Cucumber Melon <it>Cucumis</it> Microsatellite Comparative mapping Chromosome evolution |
| url | http://www.biomedcentral.com/1471-2164/12/396 |
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