Horizontal Gene Transfer From Bacteria and Plants to the Arbuscular Mycorrhizal Fungus Rhizophagus irregularis
Li, Meng1,2; Zhao, Jinjie1; Tang, Nianwu1,3; Sun, Hang1; Huang, Jinling1,4,5
2018-05-25
发表期刊FRONTIERS IN PLANT SCIENCE
ISSN1664-462X
卷号9
摘要Arbuscular mycorrhizal fungi (AMF) belong to Glomeromycotina, and are mutualistic symbionts of many land plants. Associated bacteria accompany AMF during their lifecycle to establish a robust tripartite association consisting of fungi, plants and bacteria. Physical association among this trinity provides possibilities for the exchange of genetic materials. However, very few horizontal gene transfer (HGT) from bacteria or plants to AMF has been reported yet. In this study, we complement existing algorithms by developing a new pipeline, Blast2hgt, to efficiently screen for putative horizontally derived genes from a whole genome. Genome analyses of the glomeromycete Rhizophagus irregularis identified 19 fungal genes that had been transferred between fungi and bacteria/plants, of which seven were obtained from bacteria. Another 18 R. irregularis genes were found to be recently acquired from either plants or bacteria. In the R. irregularis genome, gene duplication has contributed to the expansion of three foreign genes. Importantly, more than half of the R. irregularis foreign genes were expressed in various transcriptomic experiments, suggesting that these genes are functional in R. irregularis. Functional annotation and available evidence showed that these acquired genesmay participate in diverse but fundamental biological processes such as regulation of gene expression, mitosis and signal transduction. Our study suggests that horizontal gene influx through endosymbiosis is a source of new functions for R. irregularis, and HGT might have played a role in the evolution and symbiotic adaptation of this arbuscular mycorrhizal fungus.
关键词Arbuscular Mycorrhizal Fungi Endobacteria Eukaryotic Evolution Horizontal Gene Transfer Symbiosis
语种英语
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文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/61344
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, Dept Econ Plants & Biotechnol, Yunnan Key Lab Wild Plant Resources, Kunming, Yunnan, Peoples R China
4.Henan Univ, Inst Plant Stress Biol, State Key Lab Cotton Biol, Kaifeng, Peoples R China
5.East Carolina Univ, Dept Biol, Greenville, NC 27858 USA
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Li, Meng,Zhao, Jinjie,Tang, Nianwu,et al. Horizontal Gene Transfer From Bacteria and Plants to the Arbuscular Mycorrhizal Fungus Rhizophagus irregularis[J]. FRONTIERS IN PLANT SCIENCE,2018,9.
APA Li, Meng,Zhao, Jinjie,Tang, Nianwu,Sun, Hang,&Huang, Jinling.(2018).Horizontal Gene Transfer From Bacteria and Plants to the Arbuscular Mycorrhizal Fungus Rhizophagus irregularis.FRONTIERS IN PLANT SCIENCE,9.
MLA Li, Meng,et al."Horizontal Gene Transfer From Bacteria and Plants to the Arbuscular Mycorrhizal Fungus Rhizophagus irregularis".FRONTIERS IN PLANT SCIENCE 9(2018).
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