Effects of co-inoculation ofBradyrhizobium elkaniiBLY3-8 andStreptomyces griseoflavusP4 onRj4soybean varieties

Htwe, Aung Zaw; Moh, Seinn Moh; Moe, Kyi; Yamakawa, Takeo

doi:10.1080/00380768.2018.1452574

Cited by 11 publications

(6 citation statements)

References 27 publications

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“…The application of the biofertilizer produced from Bradyrhizobium and S. griseoflavus P4 increased the N, P, and K uptakes of soybean and mung bean compared with the control (Tables 7-9). These results support our previous finding that inoculation of Bradyrhizobium with P4 significantly increased the N, P, and K uptakes of soybean compared with an un-inoculated control [48,49]. Beneficial microorganisms can keep the soil environment rich in all kinds of micro-and macronutrients via nitrogen fixation, phosphate and potassium solubilization or mineralization, the release of plant growth regulators, the production of antibiotics, and the biodegradation of organic matter in the soil [18].…”

Section: Discussionsupporting

confidence: 88%

Effects of Biofertilizer Produced from Bradyrhizobium and Streptomyces griseoflavus on Plant Growth, Nodulation, Nitrogen Fixation, Nutrient Uptake, and Seed Yield of Mung Bean, Cowpea, and Soybean

et al. 2019

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The use of biofertilizers is important for sustainable agriculture, and the use of nodule bacteria and endophytic actinomycetes is an attractive way to enhance plant growth and yield. This study tested the effects of a biofertilizer produced from Bradyrhizobium strains and Streptomyces griseoflavus on leguminous, cereal, and vegetable crops. Nitrogen fixation was measured using the acetylene reduction assay. Under N-limited or N-supplemented conditions, the biofertilizer significantly promoted the shoot and root growth of mung bean, cowpea, and soybean compared with the control. Therefore, the biofertilizer used in this study was effective in mung bean, cowpea, and soybean regardless of N application. In this study, significant increments in plant growth, nodulation, nitrogen fixation, nitrogen, phosphorus, and potassium (NPK) uptake, and seed yield were found in mung beans and soybeans. Therefore, Bradyrhizobium japonicum SAY3-7 plus Bradyrhizobium elkanii BLY3-8 and Streptomyces griseoflavus are effective bacteria that can be used together as biofertilizer for the production of economically important leguminous crops, especially soybean and mung bean. The biofertilizer produced from Bradyrhizobium and S. griseoflavus P4 will be useful for both soybean and mung bean production.

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Section: Discussionsupporting

confidence: 88%

Effects of Biofertilizer Produced from Bradyrhizobium and Streptomyces griseoflavus on Plant Growth, Nodulation, Nitrogen Fixation, Nutrient Uptake, and Seed Yield of Mung Bean, Cowpea, and Soybean

et al. 2019

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“…In our previous study, N, P, K, Ca, and Mg uptakes were significantly improved by the combined use of SAY3-7 and P4 [20]. Moreover, N uptake was increased by the combined application of BLY3-8 and P4 [21]. Similarly, in the present study, the use of biofertilizer produced from SAY3-7, BLY3-8, and P4 significantly improved N, P, K, Ca, and Mg uptakes at some growth stages in Yezin-3 and Yezin-6 soybean varieties.…”

Section: Experiments III Evaluation Of Ssymbiotic Effectiveness Of Bimentioning

confidence: 80%

“…The use of biofertilizer has become a notable alternative method to chemical fertiliser. A biofertilizer is a substance containing living microorganisms that conditions [20] and co-inoculation of BLY3-8 (type B) and P4 in Yezin-3 (Rj 4 ) soybean variety in the pot condition [21]. Based on the previous experiments, biofertilizer produced from sole inoculation of P4 or Bradyrhizobium strain is not suitable for obtaining significant effects on plant growth, nodulation, and N 2 fixation.…”

Section: Introductionmentioning

confidence: 99%

Biofertilizer Production for Agronomic Application and Evaluation of Its Symbiotic Effectiveness in Soybeans

Htwe

Moh²,

Moe

et al. 2019

Agronomy

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This study was conducted to evaluate the effects of Bradyrhizobium japonicum SAY3-7, Bradyrhizobium elkanii BLY3-8, and Streptomyces griseoflavus P4 on the symbiotic effectiveness of soybeans before biofertiliser production, to produce biofertiliser containing the studied three strains (SAY3-7, BLY3-8, and P4), to test the effectiveness of the biofertiliser on soybean varieties, and to assess the varietal effects and interaction effects between variety and biofertiliser on plant growth, nodulation, nitrogen fixation, nutrient absorption, and seed yield. Nitrogen fixation was measured using the acetylene reduction assay and ureide methods. Contents of nutrients (N, P, K, Ca, and Mg) were also measured to calculate their uptakes. In this study, synergistic effects of nitrogen fixation were induced by combined inoculation with SAY3-7, BLY3-8 and P4 in all tested soybean varieties. Therefore, we assumed that an effective biofertiliser could be produced using these effective bacteria (SAY3-7, BLY3-8, and P4). After making biofertiliser using these effective bacteria, packages were stored at 30 °C. The populations of the bacteria in the biofertiliser were maintained at a density of 1 × 108 colony forming units (cfu) g−1 for P4 and 7 × 109 cells g−1 for Bradyrhizobium. Diluting biofertiliser by 10−3 proved more effective for nodulation and nitrogen fixation than other dilution treatments. Moreover, this biofertiliser significantly promoted plant growth, nodulation, nitrogen fixation, nutrient uptakes, and seed yield in Yezin-3 and Yezin-6 soybean varieties. Yezin-6 is a more efficient variety than Yezin-3 for improved plant growth, nodulation, nitrogen fixation, nutrient absorption, and seed yield. Taken together, the application of an effective biofertiliser and the use of an efficient soybean variety can play important roles in promoting plant growth, nodulation, nitrogen fixation, and higher seed yield.

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“…Some PGPR strains improve nodulation, nitrogen fixation, and legume growth when co-inoculated with rhizobia. Examples of PGPR include Azotobacter [6,7], Azospirillum [8,9], Bacillus [10][11][12], Pseudomonas [13,14], Serratia [14,15], Staphylococcus [10], and Streptomyces [16,17], which all share a portion of common microhabitats in the root-soil interface. During the processes of root colonization, rhizobia and PGPR must interact [18].…”

Section: Introductionmentioning

confidence: 99%

Co-Inoculation of Bacillus velezensis Strain S141 and Bradyrhizobium Strains Promotes Nodule Growth and Nitrogen Fixation

et al. 2020

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The objective of this research was to evaluate the PGPR effect on nodulation and nitrogen-fixing efficiency of soybean (Glycine max (L.) Merr.) by co-inoculation with Bradyrhizobium diazoefficiens USDA110. Co-inoculation of Bacillus velezensis S141 with USDA110 into soybean resulted in enhanced nodulation and N2-fixing efficiency by producing larger nodules. To understand the role of S141 on soybean and USDA110 symbiosis, putative genes related to IAA biosynthesis were disrupted, suggesting that co-inoculation of USDA110 with S141ΔyhcX reduces the number of large size nodules. It was revealed that yhcX may play a major role in IAA biosynthesis in S141 as well as provide a major impact on soybean growth promotion. The disruption of genes related to cytokinin biosynthesis and co-inoculation of USDA110 with S141ΔIPI reduced the number of very large size nodules, and it appears that IPI might play an important role in nodule size of soybean–Bradyrhizobium symbiosis. However, it was possible that not only IAA and cytokinin but also some other substances secreted from S141 facilitate Bradyrhizobium to trigger bigger nodule formation, resulting in enhanced N2-fixation. Therefore, the ability of S141 with Bradyrhizobium co-inoculation to enhance soybean N2-fixation strategy could be further developed for supreme soybean inoculants.

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Effects of co-inoculation ofBradyrhizobium elkaniiBLY3-8 andStreptomyces griseoflavusP4 onRj₄soybean varieties

Cited by 11 publications

References 27 publications

Effects of Biofertilizer Produced from Bradyrhizobium and Streptomyces griseoflavus on Plant Growth, Nodulation, Nitrogen Fixation, Nutrient Uptake, and Seed Yield of Mung Bean, Cowpea, and Soybean

Effects of Biofertilizer Produced from Bradyrhizobium and Streptomyces griseoflavus on Plant Growth, Nodulation, Nitrogen Fixation, Nutrient Uptake, and Seed Yield of Mung Bean, Cowpea, and Soybean

Biofertilizer Production for Agronomic Application and Evaluation of Its Symbiotic Effectiveness in Soybeans

Co-Inoculation of Bacillus velezensis Strain S141 and Bradyrhizobium Strains Promotes Nodule Growth and Nitrogen Fixation

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