文献类型： 外文期刊
作者： Huang, Renliang 1 ; Li, Zheng 1 ; Mao, Cui 3 ; Zhang, Hui 1 ; Sun, Zhongfeng 1 ; Li, Hao 1 ; Huang, Congcong 1 ; Feng, Yo 1 ;
作者机构： 1.Huazhong Agr Univ, Coll Life Sci & Technol, State Key Lab Agr Microbiol, Wuhan 430070, Hubei, Peoples R China
2.Jiangxi Acad Agr Sci, Nanchang Subctr Rice Natl Engn Lab, Key Lab Rice Physiol & Genet Jiangxi Prov, Rice Res Inst, Nanchang 330200, Jiangxi, Peoples R China
3.Huazhong Agr Univ, Natl Ctr Plant Gene Res, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Hubei, Peoples R China
4.Univ Cologne, Cologne Bioctr, Bot Inst, D-50674 Cologne, Germany
5.Univ Cologne, Cluster Excellence Plant Sci CEPLAS, D-50674 Cologne, Germany
关键词： arbuscular mycorrhizal fungi; CERK1; natural variation; rice; symbiosis
期刊名称：NEW PHYTOLOGIST （ 影响因子：10.151； 五年影响因子：10.475 ）
ISSN： 0028-646X
年卷期：
页码：
收录情况： SCI
摘要： The symbiotic interaction between arbuscular mycorrhizal fungi (AMF) and land plants is essential for efficient nutrient acquisition and utilisation. Our understanding of key processes controlling the AMF colonisation in rice is still limited. Dongxiang wild rice (DY) exhibited a stronger colonisation with Rhizophagus irregularis than the rice cultivar Zhongzao 35 (ZZ35). Chromosome segment substitution lines were constructed and the OsCERK1 gene from DY was mapped. Transgenic plants in the japonica rice Zhonghua 11 (ZZ11) were constructed to compare root colonisation by AMF. Chromosome single-segment substitution lines containing OsCERK1(DY) showed higher phosphorus content and grain yield relative to ZZ35. Four amino acids substitutions were identified among the OsCERK1 haplotypes of DY, ZZ35 and ZH11 and two of these were in the second lysine-motif domain, which is essential for the differences of AMF colonisation level among rice varieties. Heterologous expression of OsCERK1(DY) in ZH11 significantly enhanced AMF colonisation and increased resistance against the pathogenic fungi Magnaporthe oryzae. Notably, the OsCERK1(DY) haplotype was absent from 4660 cultivated rice varieties. We conclude that OsCERK1 is a key gene affecting the symbiotic interaction with AMF and OsCERK1(DY) has the biotechnological potential to increase rice phosphorus acquisition and utilisation efficiency for sustainable agriculture.
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