Symbiotic effect of<i>Bradyrhizobium yuanmingense</i>isolates over<i>Bradyrhizobium japonicum</i>with soybean

Appunu, C.; Kumar, Ravinder; Sreenivasa, V.; Manjunatha, T.; Mahadevaiah, C.; Sasirekha, Narayanasamy; Prabavathy, V. R.; Nair, Sudha

doi:10.5958/0976-0571.2015.00084.3

Cited by 8 publications

(5 citation statements)

References 3 publications

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“…Co-application of lime and inoculation improved the levels of the WNE, shoot dry weight, N uptake and nitrogen fixation (Table 2; Figures 1(b,c), 2(c), 4(c) and 5(b,c)). This shows that liming acidic soils improves the nodule effectiveness, and as results nitrogen fixation, soybean growth and nutrient uptake are enhanced, as previously reported by Appunu et al (2014) and Bekere (2013). In addition to improved nutrient availability, this significant interaction between liming and inoculation could be related to creating a suitable environment for increased microbial activities in the rhizosphere, as reported by Nduwumuremyi (2013).…”

Section: Discussionsupporting

confidence: 88%

Impact of soil acidity and liming on soybean ( Glycine max ) nodulation and nitrogen fixation in Kenyan soils

Bakari

Mungai

Thuita

et al. 2020

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

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There is a wide application of rhizobia inoculants to legume crops in Africa, irrespective of the soil acidity, though the latter limits the effectiveness of inoculants. Two trials were conducted in a controlled environment to determine suitable soil pH and impact of liming on soybean nodulation and nitrogen fixation to inform proper application of the rhizobia-inoculant technology on acid soils. In the first trial; soil, variety and inoculation had significant influence (p < 0.05) on weighed nodule effectiveness (WNE) and N fixation. Strongly acidic soils recorded low WNE and N fixation. In the second trial, WNE and N fixation significantly increased with coapplication of lime and inoculation (p < 0.05). The results showed that soybean inoculation is effective in increasing nodulation and N fixation in moderate acidic soils, contrarily to strongly acidic soils. Interestingly, co-application of lime and inoculation has potential of increasing nodulation and N fixation in strongly acidic soils. The WNE is recommended as a robust formula to report nodule effectiveness, compared to the current percentage method.

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Section: Discussionsupporting

confidence: 88%

Impact of soil acidity and liming on soybean ( Glycine max ) nodulation and nitrogen fixation in Kenyan soils

Bakari

Mungai

Thuita

et al. 2020

Acta Agriculturae Scandinavica, Section B — Soil & Plant Sc

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“…Rhizobial inoculation significantly (P<0.05) increased nodule number and root dry weight (Table 4). This is in accordance with previous researchers who revealed that inoculation of soybean significantly increased nodule number and root dry weight (Appunu et al, 2014;Samudin and Kuswantoro, 2017). Rhizobium enhance growth and development through production of indole acetic acid (IAA) which helps in development of plant root system (Kuar et al, 2014).…”

Section: Effect Of Bradyrhizobiumsupporting

confidence: 89%

Stimulation of Soybean (Glycine max) Growth and Yield using Bradyrhizobium Inoculants in the Semi-arid Environment of Botswana

Mosupiemang¹,

Bareeleng²,

Chiduwa³

et al. 2021

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Background: Crop yields in the semi-arid regions are low due to climatic and soil related constraints.Soybean as one of the most important legume crops grown worldwide, has a role to contribute nitrogen to improve nutrient poor soils in Africa. A study was conducted to examine the effects of Bradyrhizobium spp inoculations on the growth and yield of soybean varieties in a glasshouse.Method: The study was arranged in a randomized complete block factorial design, with factor A being two soybean varieties (Bimha and Status) while factor B was inoculation using four Bradyrhizobium strains and the uninoculated control. Results: Bradyrhizobium inoculation significantly (P less than 0.001)affected days to 50% flowering, days to emergence, nodule number, root dry weight and grain yield and yield traits. Parameters that were affected by both inoculant strain and variety included days to 50% flowering, days to emergence, number of pods per plant, pod weight and number of seeds per pod. The interaction effect of variety and Bradyrhizobium inoculant strain was observed only on number of pods per plants. Our study shows that soybean grows well when inoculated with Bradyrhizobium inoculants, in semi-arid conditions of Botswana.

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“…Among them, the response of Bradyrhizobium relative abundance to mulching measures was gradually obvious and gradually occupied a dominant position in the mature stage when the root and nodule activities were in a stable state. Bradyrhizobium is not only an important component of the diazotrophic community but also a representative endophytic bacterium for symbiotic nitrogen fixation of leguminous roots (Appunu et al, 2015; Jaramillo et al, 2013). In the vigorous period, the root nodules are well‐developed and the nitrogen demand of crops increases.…”

Section: Discussionmentioning

confidence: 99%

Dynamic variability of soil diazotrophs in bulk‐rhizosphere and phenological stages under long‐term mulching in an eroded area in the Loess Plateau

Hao

Liu

et al. 2021

Land Degrad Dev

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Free‐living diazotrophs play a significant role in the process of soil biological nitrogen fixation. Long‐term field management has a cumulative effect on soil microbial communities. However, after long‐term mulching measures in erosion areas, the stability difference in diazotrophs in bulk‐rhizosphere soil and the temporal dynamic changes remain unclear. In this study, we analysed the dynamic variability of soil diazotrophic community structures using high‐throughput sequencing. The result of Chao1 diversity index showed that mulching effectively increased the richness of soil diazotrophs. Combining the community composition, it was found that the diversity level of the soil diazotrophic community under mulching decreased more drastically along the development stages compared with no‐tillage, and Bradyrhizobium played a major role in nitrogen fixation. In rhizosphere soil, mulching promoted the relative abundances of Azohydromonas, Bradyrhizobium, and Skermanella. Co‐occurrence network analysis indicated that mulching measures strengthened the connection between the dominant components to improve the aggregation of the network. The partial least squares‐path model showed that the richness of diazotrophs in rhizosphere soil had an indirect effect on mulching through the available carbon and nitrogen nutrients of bulk soil, thereby improving the response rate to environmental variables. Overall, our findings showed that under long‐term mulching, the richness and aggregation of dominant components of the soil diazotrophic community increased with the phenological period and distance from roots, revealing the importance of mulching in eroded areas to improve farmland soil nitrogen fixation capacity. This study provides a theoretical reference for microecology to effectively improve soil fertility in similar areas.

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Symbiotic effect ofBradyrhizobium yuanmingenseisolates overBradyrhizobium japonicumwith soybean

Cited by 8 publications

References 3 publications

Impact of soil acidity and liming on soybean ( Glycine max ) nodulation and nitrogen fixation in Kenyan soils

Impact of soil acidity and liming on soybean ( Glycine max ) nodulation and nitrogen fixation in Kenyan soils

Stimulation of Soybean (Glycine max) Growth and Yield using Bradyrhizobium Inoculants in the Semi-arid Environment of Botswana

Dynamic variability of soil diazotrophs in bulk‐rhizosphere and phenological stages under long‐term mulching in an eroded area in the Loess Plateau

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