PMID- 30459801 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1664-462X (Print) IS - 1664-462X (Electronic) IS - 1664-462X (Linking) VI - 9 DP - 2018 TI - Comprehensively Characterizing the Cytological Features of Saccharum spontaneum by the Development of a Complete Set of Chromosome-Specific Oligo Probes. PG - 1624 LID - 10.3389/fpls.2018.01624 [doi] LID - 1624 AB - Chromosome-specific identification is a powerful technique in the study of genome structure and evolution. However, there is no reliable cytogenetic marker to unambiguously identify each of the chromosomes in sugarcane (Saccharum spp., Poaceae), which has a complex genome with a high level of ploidy and heterozygosity. In this study, we developed a set of oligonucleotide (oligo)-based probes through bioinformatic design and massive synthetization. These probes produced a clear and bright single signal in each of the chromosomes and their eight homologous chromosomes in the ancient species Saccharum spontaneum (2n = 8x = 64). Thus, they can be used as reliable markers to robustly label each of the chromosomes in S. spontaneum. We then obtained the karyotype data and established a nomenclature based on chromosomal sizes for the eight chromosomes of the octoploid S. spontaneum. In addition, we also found that the 45S and 5S rDNAs demonstrated high copy number variations among different homologous chromosomes, indicating a rapid evolution of the highly repeated sequence after polyploidization. Our fluorescence in situ hybridization (FISH) assay also demonstrated that these probes could be used as cross-species markers between or within the genera of Sorghum and Saccharum. By comparing FISH analyses, we discovered that several chromosome rearrangement events occurred in S. spontaneum, which might have contributed to the basic chromosome number reduction from 10 in sorghum to 8 in sugarcane. Consistent identification of individual chromosomes makes molecular cytogenetic study possible in sugarcane and will facilitate fine chromosomal structure and karyotype evolution of the genus Saccharum. FAU - Meng, Zhuang AU - Meng Z AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. FAU - Zhang, Zhiliang AU - Zhang Z AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. FAU - Yan, Tianying AU - Yan T AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. FAU - Lin, Qingfang AU - Lin Q AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. FAU - Wang, Yu AU - Wang Y AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. FAU - Huang, Weiyuan AU - Huang W AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. FAU - Huang, Yongji AU - Huang Y AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. FAU - Li, Zhanjie AU - Li Z AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. FAU - Yu, Qingyi AU - Yu Q AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. AD - Texas A&M AgriLife Research, The Texas A&M University System, Dallas, TX, United States. FAU - Wang, Jianping AU - Wang J AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. AD - Department of Agronomy, University of Florida, Gainesville, FL, United States. FAU - Wang, Kai AU - Wang K AD - Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Center for Genomics and Biotechnology, Fujian Agriculture and Forestry University, Fuzhou, China. AD - National Engineering Research Center of Sugarcane, Fujian Agriculture and Forestry University, Fuzhou, China. LA - eng PT - Journal Article DEP - 20181106 PL - Switzerland TA - Front Plant Sci JT - Frontiers in plant science JID - 101568200 PMC - PMC6232525 OTO - NOTNLM OT - Saccharum spontaneum OT - chromosomal rearrangement OT - chromosome identification OT - fluorescence in situ hybridization OT - karyotype OT - oligo probe EDAT- 2018/11/22 06:00 MHDA- 2018/11/22 06:01 PMCR- 2018/01/01 CRDT- 2018/11/22 06:00 PHST- 2018/08/25 00:00 [received] PHST- 2018/10/18 00:00 [accepted] PHST- 2018/11/22 06:00 [entrez] PHST- 2018/11/22 06:00 [pubmed] PHST- 2018/11/22 06:01 [medline] PHST- 2018/01/01 00:00 [pmc-release] AID - 10.3389/fpls.2018.01624 [doi] PST - epublish SO - Front Plant Sci. 2018 Nov 6;9:1624. doi: 10.3389/fpls.2018.01624. eCollection 2018.