Microbes and Environments
Online ISSN : 1347-4405
Print ISSN : 1342-6311
ISSN-L : 1342-6311
Short Communication
Mutants Disrupted in the Type III Secretion System of Bradyrhizobium elkanii BLY3-8 Overcame Nodulation Restriction by Rj3-genotype Soybean
Miku ShobudaniAung Zaw HtweTakeo YamakawaMatsujiro IshibashiHirohito Tsurumaru
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Supplementary material

2020 Volume 35 Issue 2 Article ID: ME19151

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Abstract

Bradyrhizobium elkanii BLY3-8 does not form nodules on the roots of Rj3-genotype soybean (cultivar D-51). This is a cultivar-specific nodulation restriction. The genes A6X20_40975 and A6X20_41030 in strain BLY3-8 were predicted to encode the transcriptional activator and apparatus of the type III secretion system (T3SS) (the proteins TtsI and RhcJ), respectively. Mutants disrupted in these genes overcame the nodulation restriction. These results suggest that an effector injected via T3SS into Rj3-genotype soybean is involved in nodulation restriction by Rj3-genotype soybean.

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© 2020 by Japanese Society of Microbial Ecology / Japanese Society of Soil Microbiology / Taiwan Society of Microbial Ecology / Japanese Society of Plant Microbe Interactions / Japanese Society for Extremophiles.
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