Identification of an Exopolysaccharide Biosynthesis Gene in Bradyrhizobium diazoefficiens USDA110.
Identification of an Exopolysaccharide Biosynthesis Gene in Bradyrhizobium diazoefficiens USDA110.
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重氮慢生根瘤菌 USDA110 胞外多糖生物合成基因的鉴定
DOI:
10.3390/microorganisms9122490
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发表时间:
2021-12-01
期刊:
影响因子:
4.5
通讯作者:
Dai W
中科院分区:
文献类型:
--
作者:
Xu C;Ruan H;Cai W;Staehelin C;Dai W
Exopolysaccharides (EPS) play critical roles in rhizobium-plant interactions. However, the EPS biosynthesis pathway in Bradyrhizobium diazoefficiens USDA110 remains elusive. Here we used transposon (Tn) mutagenesis with the aim to identify genetic elements required for EPS biosynthesis in B. diazoefficiens USDA110. Phenotypic screening of Tn5 insertion mutants grown on agar plates led to the identification of a mutant with a transposon insertion site in the blr2358 gene. This gene is predicted to encode a phosphor-glycosyltransferase that transfers a phosphosugar onto a polyprenol phosphate substrate. The disruption of the blr2358 gene resulted in defective EPS synthesis. Accordingly, the blr2358 mutant showed a reduced capacity to induce nodules and stimulate the growth of soybean plants. Glycosyltransferase genes related to blr2358 were found to be well conserved and widely distributed among strains of the Bradyrhizobium genus. In conclusion, our study resulted in identification of a gene involved in EPS biosynthesis and highlights the importance of EPS in the symbiotic interaction between USDA110 and soybeans.
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影响因子:
5.6
作者:
López-Baena FJ;Ruiz-Sainz JE;Rodríguez-Carvajal MA;Vinardell JM
通讯作者:
Vinardell JM
影响因子:
16.6
作者:
Kawaharada Y;Nielsen MW;Kelly S;James EK;Andersen KR;Rasmussen SR;Füchtbauer W;Madsen LH;Heckmann AB;Radutoiu S;Stougaard J
通讯作者:
Stougaard J
影响因子:
4.1
作者:
Kaneko, T;Nakamura, Y;Tabata, S
通讯作者:
Tabata, S
影响因子:
5.6
作者:
Acosta-Jurado S;Fuentes-Romero F;Ruiz-Sainz JE;Janczarek M;Vinardell JM
通讯作者:
Vinardell JM
影响因子:
1
作者:
Ksenzenko, V. N.;Ivashina, T. V.;Shibaev, V. N.
通讯作者:
Shibaev, V. N.