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RNA Sequencing-Associated Study Identifies GmDRR1 as Positively Regulating the Establishment of Symbiosis in Soybean

文献类型： 外文期刊

作者： Shi, Yan 1 ; Zhang, Zhanguo 1 ; Wen, Yingnan 1 ; Yu, Guolong 1 ; Zou, Jianan 1 ; Huang, Shiyu 1 ; Wang, Jinhui 1 ; Zhu, J 1 ;

作者机构： 1.Northeast Agr Univ, Coll Sci, Key Lab Soybean Biol Chinese,Minist Educ, Key Lab Soybean Biol & Breeding Genet,Chinese Agr, Harbin, Heilongjiang, Peoples R China

2.Jilin Acad Agr Sci, Soybean Res Inst, Changchun, Peoples R China

3.Heilongjiang Acad Agr, Jiamusi Branch, Jiamusi, Peoples R China

4.Heilongjiang Acad Agr, Suihua Branch, Suihua, Peoples R China

5.Heilongjiang Acad Agr Sci, Crop Breeding Inst, Harbin, Heilongjiang, Peoples R China

关键词： dirigent protein; GmDRR1; RNA-seq; segment-substituted lines; soybean; wild soybean

期刊名称：MOLECULAR PLANT-MICROBE INTERACTIONS （ 影响因子：4.171； 五年影响因子：4.836 ）

ISSN： 0894-0282

年卷期： 2020 年 33 卷 6 期

页码：

收录情况： SCI

摘要： In soybean (Glycine max)-rhizobium interactions, the type III secretion system (T3SS) of rhizobium plays a key role in regulating host specificity. However, the lack of information on the role of T3SS in signaling networks limits our understanding of symbiosis. Here, we conducted an RNA sequencing analysis of three soybean chromosome segment substituted lines, one female parent and two derived lines with different chromosome-substituted segments of wild soybean and opposite nodulation patterns. By analyzing chromosome-linked differentially expressed genes in the substituted segments and quantitative trait loci (QTL)-assisted selection in the substituted-segment region, genes that may respond to type III effectors to mediate plant immunity-related signaling were identified. To narrow down the number of candidate genes, QTL assistant was used to identify the candidate region consistent with the substituted segments. Furthermore, one candidate gene, GmDRR1, was identified in the substituted segment. To investigate the role of GmDRR1 in symbiosis establishment, GmDRR1-overexpression and RNA interference soybean lines were constructed. The nodule number increased in the former compared with wild-type soybean. Additionally, the T3SS-regulated effectors appeared to interact with the GmDDR1 signaling pathway. This finding will allow the detection of T3SS-regulated effectors involved in legume-rhizobium interactions.

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