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Experimental and genomic evidence for the indica-type cytoplasmic effect in Oryza sativa L. ssp japonica
Alternative TitleExperimental and genomic evidence for the indica-type cytoplasmic effect in Oryza sativa L. ssp. japonica
Liu Youhong; Tang Liang; Xu Quan; Ma Dianrong; Zhao Minghui; Sun Jian; Chen Wenfu
2016
Source PublicationJOURNAL OF INTEGRATIVE AGRICULTURE
ISSN2095-3119
Volume15Issue:10Pages:2183-2191
AbstractCytoplasmic effects are important agronomical phenomena that have generated widespread interest in both theory and application. In the present study, five high yield rice cultivars (Oryza sativa L. ssp. japonica) in large-scale cultivation in northeast China were determined to possess Oryza sativa L. ssp. indica-type cytoplasm using cytoplasmic subspecies-specific molecular markers. This was confirmed by cytoplasmic genome-wide single nucleotide polymorphisms (SNPs) and functional gene sequencing. Two of these five japonica cultivars were core breeding parents with high yield and the other three were super-high-yield varieties registered by the Ministry of Agriculture of China. We constructed nuclear substitution lines to further demonstrate whether and how this indica-type cytoplasm contributed to yield improvement by comparing yield components. The results showed that under the same japonica nuclear background, the lines with indica-type cytoplasm had a significant decrease in tillers in exchange for increased grain number per panicle compared with their recurrent parents. Our results implied that botanical basis of this cytoplasmic effect was to reduce the plant's branching differentiation to produce more floral organs under the constant nutrition. Our findings open another door for the utilization of inter-subspecific hybridization for the improvement of rice cultivar.
Other AbstractCytoplasmic effects are important agronomical phenomena that have generated widespread interest in both theory and application. In the present study, five high yield rice cultivars(Oryza sativa L. ssp. japonica)in large-scale cultivation in northeast China were determined to possess Oryza sativa L. ssp. indica-type cytoplasm using cytoplasmic subspecies-specific molecular markers. This was confirmed by cytoplasmic genome-wide single nucleotide polymorphisms(SNPs)and functional gene sequencing. Two of these five japonica cultivars were core breeding parents with high yield and the other three were super-high-yield varieties registered by the Ministry of Agriculture of China. We constructed nuclear substitution lines to further demonstrate whether and how this indica-type cytoplasm contributed to yield improvement by comparing yield components. The results showed that under the same japonica nuclear background, the lines with indica-type cytoplasm had a significant decrease in tillers in exchange for increased grain number per panicle compared with their recurrent parents. Our results implied that botanical basis of this cytoplasmic effect was to reduce the plant's branching differentiation to produce more floral organs under the constant nutrition. Our findings open another door for the utilization of inter-subspecific hybridization for the improvement of rice cultivar.
KeywordAGRONOMIC TRAITS MITOCHONDRIAL GENOMES NUCLEAR INTERACTION MALE-STERILITY COMMON WHEAT RICE PROTEIN CHINA DNA SELECTION cytoplasmic effects cytoplasmic genome-wide SNPs super high yield rice nuclear substitution lines
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China] ; [Cultivation Plan for Youth Agricultural Science and Technology Innovative Talents of Liaoning Province] ; [China Postdoctoral Science Foundation Grant] ; [Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT), China]
CSCD IDCSCD:5828599
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/151276
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Liu Youhong,Tang Liang,Xu Quan,et al. Experimental and genomic evidence for the indica-type cytoplasmic effect in Oryza sativa L. ssp japonica[J]. JOURNAL OF INTEGRATIVE AGRICULTURE,2016,15(10):2183-2191.
APA Liu Youhong.,Tang Liang.,Xu Quan.,Ma Dianrong.,Zhao Minghui.,...&Chen Wenfu.(2016).Experimental and genomic evidence for the indica-type cytoplasmic effect in Oryza sativa L. ssp japonica.JOURNAL OF INTEGRATIVE AGRICULTURE,15(10),2183-2191.
MLA Liu Youhong,et al."Experimental and genomic evidence for the indica-type cytoplasmic effect in Oryza sativa L. ssp japonica".JOURNAL OF INTEGRATIVE AGRICULTURE 15.10(2016):2183-2191.
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