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  4. 中国科学院新生代地质与环境重点实验室
Morphological characteristics of homozygous wild rice phytoliths and their significance in the study of rice origins

文献类型：期刊论文

作者Tang, Xiangan1,3; Lu, Houyuan2; Cao, Zhibin3; Xie, Jinshui1,3
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2021-10-25
页码11
关键词Dongxiang wild rice Common wild rice Bulliform phytolith Homozygous lineage Native habitats Rice origins
ISSN号1674-7313
DOI10.1007/s11430-021-9835-6
英文摘要The analysis of wild rice cell structures, tissues, organs, and other morphological characteristics and the development of identification markers for wild rice are the basis for identifying the origins and evolution of prehistorical rice agriculture. However, contemporary wild rice strains are often subject to gene introgression from domesticated rice cultivated by humans during the evolutionary process, which may affect the accuracy of wild rice identification markers. This means that how to eliminate the effects of gene introgression from domesticated rice and other plants on the identification of origin markers, and the purification of the morphological characteristics of wild rice have become critical in research to identify the origin of rice. In this study, we compared and analysed the phytolith morphologies of three common wild rice species (Oryza rufipogon Griff.) from various habitats and one species of ectopically preserved homozygous common wild rice after six consecutive generations of self-crossing. We found that the morphology of the bulliform phytolith in the homozygous wild rice with reduced domestication gene introgression had three significant differences compared with native wild rice: (1) an overall reduction in size (body length decreased from 41.9 mu m in VLnative to 38.6 mu m in VLhomozygous); (2) an increase in the proportion of the long-stalked phenotype, with the ratio of B/A decreasing from 1.22 +/- 0.47 in B/A(native) to 0.92 +/- 0.30 in B/A(homozygous); and (3) a decrease in the number of fish-scale decorations, with the proportion of bulliform phytoliths with >= 9 fish-scale decorations reduced from 53.4% in native wild rice to 37.2% in homozygous wild rice. Thus, this study provides a reliable reference for the identification of rice origins using rice phytolith morphology.
WOS关键词DOMESTICATION ; CHINA ; AGRICULTURE ; REVEALS
资助项目National Natural Science Foundation of China[41967054] ; National Natural Science Foundation of China[41830322]
WOS研究方向Geology
语种英语
WOS记录号WOS:000712500900003
出版者SCIENCE PRESS
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/103786]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Tang, Xiangan; Lu, Houyuan
作者单位1.Jiangxi Agr Univ, Sch Agr Sci, Nanchang 330045, Jiangxi, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
3.Jiangxi Acad Agr Sci, Nanchang 330200, Jiangxi, Peoples R China
推荐引用方式
GB/T 7714		 Tang, Xiangan,Lu, Houyuan,Cao, Zhibin,et al. Morphological characteristics of homozygous wild rice phytoliths and their significance in the study of rice origins[J]. SCIENCE CHINA-EARTH SCIENCES,2021:11.
APA Tang, Xiangan,Lu, Houyuan,Cao, Zhibin,&Xie, Jinshui.(2021).Morphological characteristics of homozygous wild rice phytoliths and their significance in the study of rice origins.SCIENCE CHINA-EARTH SCIENCES,11.
MLA Tang, Xiangan,et al."Morphological characteristics of homozygous wild rice phytoliths and their significance in the study of rice origins".SCIENCE CHINA-EARTH SCIENCES (2021):11.

入库方式： OAI收割

来源：地质与地球物理研究所

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