Genetic Diversity of Soybean Root Nodulating Bacteria

Biate, David L.; Kumar, Lakkineni Vithal; Ramadoss, D.; Kumari, Anita; Naik, Satish; Reddy, Kiran K.; Annapurna, K.

doi:10.1007/978-3-319-05936-5_5

Cited by 12 publications

(2 citation statements)

References 95 publications

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“…Research has shown that soybean has diverse rhizobacteria, including Bradyrhizobium, Bacillus, Burkholderia, and Rhizobium species (Biate et al, 2014;Zhong et al, 2019;Han et al, 2020;Yamazaki et al, 2021), that could affect soybean yield and disease incidence (Chang et al, 2017;Hussain et al, 2018). Future studies may focus on the selection pressure derived from soybean rhizobacteria on the expressions of PR-protein genes and the regulatory mechanisms of defense responses induced by different rhizobacteria.…”

Section: Discussionmentioning

confidence: 99%

Characterization of soybean chitinase genes induced by rhizobacteria involved in the defense against Fusarium oxysporum

Chen,

Sang,

Chilvers

et al. 2024

Front. Plant Sci.

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Rhizobacteria are capable of inducing defense responses via the expression of pathogenesis-related proteins (PR-proteins) such as chitinases, and many studies have validated the functions of plant chitinases in defense responses. Soybean (Glycine max) is an economically important crop worldwide, but the functional validation of soybean chitinase in defense responses remains limited. In this study, genome-wide characterization of soybean chitinases was conducted, and the defense contribution of three chitinases (GmChi01, GmChi02, or GmChi16) was validated in Arabidopsis transgenic lines against the soil-borne pathogen Fusarium oxysporum. Compared to the Arabidopsis Col-0 and empty vector controls, the transgenic lines with GmChi02 or GmChi16 exhibited fewer chlorosis symptoms and wilting. While GmChi02 and GmChi16 enhanced defense to F. oxysporum, GmChi02 was the only one significantly induced by Burkholderia ambifaria. The observation indicated that plant chitinases may be induced by different rhizobacteria for defense responses. The survey of 37 soybean chitinase gene expressions in response to six rhizobacteria observed diverse inducibility, where only 10 genes were significantly upregulated by at least one rhizobacterium and 9 genes did not respond to any of the rhizobacteria. Motif analysis on soybean promoters further identified not only consensus but also rhizobacterium-specific transcription factor-binding sites for the inducible chitinase genes. Collectively, these results confirmed the involvement of GmChi02 and GmChi16 in defense enhancement and highlighted the diverse inducibility of 37 soybean chitinases encountering F. oxysporum and six rhizobacteria.

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Section: Discussionmentioning

confidence: 99%

Characterization of soybean chitinase genes induced by rhizobacteria involved in the defense against Fusarium oxysporum

Chen,

Sang,

Chilvers

et al. 2024

Front. Plant Sci.

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“…A compatible partnership will yield better results in terms of plant growth, yield and N content of the plant. There is a large genetic diversity of soybean rhizobia existing in soils (Satyaprakash and Annapurna 2006, Biate et al 2014b, Sameh et al 2014. It is important to select the most effective strain to develop as a bioinoculant.…”

Section: Symbiotic Performance Of Rhizobiummentioning

confidence: 99%

Soybean (Glycine max) genotype–mediated variation in the symbiotic performance of Rhizobium

Annapurna

Kumari

et al. 2017

Indian J Agri Sci

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Legume–rhizobium interaction is the result of molecular dialogue involving a succession of events on the perception of signal molecules produced and secreted by both partners. Soybean (Glycine max L.) is known to be nodulated by two different genera, Bradyrhizobium (slow growing rhizobia) and Sinorhizobium (fast growing) species. The present investigation is an attempt to understand the host genotypic effect on the fast and slow growing root nodulating bacteria of soybean which impacts the biological nitrogen fixation and would lead to the selection of best cultivar-strain compatible interaction. Five soybean genotypes of North Plain Zone, viz. DS 12-13, DS 9712, DS 2705, SL 979, SL 982 were evaluated for their symbiotic potential with two slow (KAS-1, MTCC10753) and two fast growing root nodulating bacteria (DS-1, LSR-8). Genotype DS12-13 formed significant number of nodules with KAS-1 with LS mean of 17.3. Genotype DS 2705 was poorly nodulated by the four strains. Among the strains, slow growing KAS-1 and fast growing DS-1 strains were effective across the genotypes. There was significant increase in the specific acetylene reducing activity of these strains 71.1 and 72.6 nmoles of C2H4 produced/mg/ndw respectively. These strains conformed to the biochemical identification by failing to grow on citrate, glucose peptone agar and Hoffer's alkaline media.

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Biological Nitrogen Fixation and Biofertilizers as Ideal Potential Solutions for Sustainable Agriculture

Bashandy

Abd‐Alla

Bagy

2019

Integrating Green Chemistry and Sustainable Engineering

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Genetic Diversity of Soybean Root Nodulating Bacteria

Cited by 12 publications

References 95 publications

Characterization of soybean chitinase genes induced by rhizobacteria involved in the defense against Fusarium oxysporum

Characterization of soybean chitinase genes induced by rhizobacteria involved in the defense against Fusarium oxysporum

Soybean (Glycine max) genotype–mediated variation in the symbiotic performance of Rhizobium

Biological Nitrogen Fixation and Biofertilizers as Ideal Potential Solutions for Sustainable Agriculture

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