Genetic variability among the chloroplast genomes of sugarcane (Saccharum spp) and its wild progenitor species Saccharum spontaneum L.
文献类型: 外文期刊
作者: Zhu, J. -R. 1 ; Zhou, H. 2 ; Pan, Y. -B. 3 ; Lu, X. 1 ;
作者机构: 1.Yunnan Acad Agr Sci, Sugarcane Res Inst, Yunnan Key Lab Sugarcane Genet Improvement, Kaiyuan, Yunnan, Peoples R China
2.Guangxi Acad Agr Sci, China Minist Agr, Sugarcane Res Inst, Guangxi Lab Sugarcane Biotechnol & Genet Improvem, Nanning, Guangxi, Peoples R China
3.ARS, USDA, Sugarcane Res Lab, Houma, LA 70360 USA
关键词: Sugarcane;Saccharum spontaneum;Chloroplast genome;Maternal inheritance
期刊名称:GENETICS AND MOLECULAR RESEARCH ( 影响因子:0.764; 五年影响因子:0.912 )
ISSN: 1676-5680
年卷期: 2014 年 13 卷 2 期
页码:
收录情况: SCI
摘要: A striking characteristic of modern sugarcane is that all sugarcane cultivars (Saccharum spp) share a common cytoplasm from S. officinarum. To explore the potential value of S. spontaneum cytoplasm, new Saccharum hybrids with an S. spontaneum cytoplasm were developed at the United States Department of Agriculture-Agricultural Research Service, Sugarcane Research Laboratory, through a combination of conventional and molecular breeding approaches. In this study, we analyzed the genetic variability among the chloroplast genomes of four sugarcane cultivars, eight S. spontaneum clones, and three F-1 progeny containing an S. spontaneum cytoplasm. Based on the complete chloroplast genome sequence information of two sugarcane cultivars (NCo 310 and SP 80-3280) and five related grass species (barley, maize, rice, sorghum, and wheat), 19 polymerase chain reaction primer pairs were designed targeting various chloroplast DNA (cpDNA) segments with a total length varying from 4781 to 4791 bp. Ten of the 19 cpDNA segments were polymorphic, harboring 14 mutation sites [a 15-nt insertion/deletion (indel), a 5-nt indel, two poly (T) tracts, and 10 single nucleotide polymorphisms]. We demonstrate for the first time that the chloroplast genome of S. spontaneum was maternally inherited. Comparative sequence homology analyses clustered sugarcane cultivars into a distinctive group away from S. spontaneum and its progeny. Three mutation sites with a consistent, yet species-specific, nucleotide composition were found, namely, an A/C transversion and two indels. The genetic variability among cpDNA of sugarcane cultivars and S. spontaneum will be useful information to determine the maternal origin in the Saccharum genus.
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