Aeschynomene indica -Nodulating Rhizobia Lacking Nod Factor Synthesis Genes: Diversity and Evolution in Shandong Peninsula, China

Author:

Zhang Zhenpeng12,Li Yan1,Pan Xiaohan3,Shao Shuai14,Liu Wei1,Wang En-Tao5,Xie Zhihong16

Affiliation:

1. Key Laboratory of Coastal Biology and Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China

2. University of Chinese Academy of Sciences (UCAS), Beijing, China

3. Yantai Institute, China Agricultural University, Yantai, China

4. Life Science College, Yantai University, Yantai, China

5. Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico

6. Center for Ocean Mag-Science, Chinese Academy of Sciences, Qingdao, China

Abstract

Aeschynomene indica rhizobia (AIRs) can form both root and stem nodules via Nod factor-independent processes, which distinguishes them from other rhizobia. This study systematically uncovered the diversity and community composition of A. indica rhizobia distributed in eastern China. Our results reclassified all the A. indica rhizobia across the world and represent a useful contribution to evaluating the diversity and distribution of the symbiont. The presence of novel genospecies specifically distributed in China enriched the A. indica rhizobia resources and provided insight into the geographic distribution of rhizobia. The phylogenetic relationship between nifH and pufLM of A. indica rhizobia across the world provides insight into the evolution of their nitrogen fixation and photosynthetic abilities.

Funder

National Natural Science Foundation of China

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

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