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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.9
- 수록면
- 206 - 216 (11page)
- DOI
- 10.9787/KJBS.2021.53.3.206
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초록· 키워드
오류제보하기
Three Brassica species, namely, Brassica rapa, B. nigra, and B. oleracea are considered economically important as they are grownfor human consumption and biogas production. Like other crops facing agricultural constraints, selective crossing or hybridization in cruciferousvegetables has helped farmers to improve them. This study conducted a comparative evaluation across and within the species through cytogeneticanalysis to provide fresh insights into their chromosome structures and evolutionary relationships. A new karyomorphological parameter confirmedsymmetric karyotypes in all the accessions, thereby allowing for the depiction of the ancestral chromosome karyotype. Several lines of B.
rapa, B. nigra, and B. oleracea were subjected to physical mapping using a fluorescence in situ hybridization technique to elucidate thechromosomal distribution of the two types of rDNAs. The signal number and distribution of 18S rDNA across the metaphase chromosomesof B. rapa accessions did not vary as compared to 5S rDNA, which was also observed in several lines of B. nigra. In contrast, the numberand distribution of 5S rDNA loci across the chromosomes in several lines of B. oleracea were found to be more conserved than those correspondingto the 18S rDNA. Overall, this study revealed the evolutionary dynamics of rDNA, which may play an important role in shaping the chromosomekaryotypes of Brassica species.
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참고문헌 (52)
참고문헌 신청
Altinordu F / 2016 / A tool for the analysis of chromosomes : KaryoType / Taxon 65:586~592
Armstrong S / 1998 / Physical mapping of DNA repetitive sequences to mitotic and meiotic chromosomes of Brassica oleracea var. alboglabra by fluorescence in situ hybridization / Heredity 81:666~673
Bačovský V / 2018 / Technical review : Cytogenetic tools for studying mitotic chromosomes / Methods Mol Biol 1675:509~535
Baltisberger M / 2016 / Karyotype evolution supports the molecular phylogeny in the genus Ranunculus (Ranunculaceae) / Perspect Plant Ecol Evol Syst 18:1~14
Begnis M / 2018 / RNAi drives nonreciprocal translocations at eroding chromosome ends to establish telomere-free linear chromosomes / Genes Dev 32:537~554
Armstrong S / 1998 / Physical mapping of DNA repetitive sequences to mitotic and meiotic chromosomes of Brassica oleracea var. alboglabra by fluorescence in situ hybridization / Heredity 81:666~673
Bačovský V / 2018 / Technical review : Cytogenetic tools for studying mitotic chromosomes / Methods Mol Biol 1675:509~535
Baltisberger M / 2016 / Karyotype evolution supports the molecular phylogeny in the genus Ranunculus (Ranunculaceae) / Perspect Plant Ecol Evol Syst 18:1~14
Begnis M / 2018 / RNAi drives nonreciprocal translocations at eroding chromosome ends to establish telomere-free linear chromosomes / Genes Dev 32:537~554
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