Interaction between arbuscular mycorrhizal fungi and Bacillus spp. in soil enhancing growth of crop plants

Nanjundappa, Anuroopa; Bagyaraj, D. J.; Saxena, Anil Kumar; Kumar, Murugan; Chakdar, Hillol

doi:10.1186/s40694-019-0086-5

Cited by 134 publications

(61 citation statements)

References 59 publications

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“…An increase in plant biomass from the inoculation of soils with select Bacilli spp . is also reported by [ 43 ]. Application of the Bonferroni factor to the data and Bacilli spp .…”

Section: Discussionsupporting

confidence: 81%

“…Xie et al [ 42 ] also report an increase in AM fungal symbiosis due to the presence of B. amyloliquefaciences using other plant species ( Lotus corniculatus , Thymus serpyllum , and Trifolium repens ) instead of wheat. While their study did not use soil glomalin as an indicator of AM fungal growth, their findings were comparable with B. amyloliquefaciences applications noted to increase AM fungal biomass due to its MHB properties, with some literature indicating AM fungi benefit from the presence of B. amyloliquefaciences [ 42 , 43 , 44 , 45 , 46 ]. The significant increase in glomalin in soils from both tillage treatments reported in the current study further supports this conclusion.…”

Section: Discussionmentioning

confidence: 57%

“…Arbuscules facilitate the transfer of soil nutrients acquired by AM fungal mycelia to the plant roots [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ], as well as further enhancing glomalin due to increasing the fungal biomass. The greater proliferation of AM fungi root symbiotic structures increases the plant root surface area, allowing for less plant derived resources required for root growth and development to assimilate the same quantity of nutrients.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, B. amyloliquefaciens is reported by [ 50 ] and [ 51 ] to suppress plant and fungal pathogenic nematodes and fungal pathogens such as Fusarium [ 52 ]. The AM fungus, R. irregularis, is reported to benefit directly from the presence of B. amyloliquefaciences [ 42 , 43 ] acting as MHB facilitating colonisation of the host plant. The beneficial impact to the wheat plant from B. amyloliquefaciens inoculation observed here supports the observation of [ 42 ], with both an increase in glomalin production and root arbuscules evident.…”

Section: Discussionmentioning

confidence: 99%

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Species-Specific Interactions of Bacillus Innocula and Arbuscular Mycorrhizal Fungi Symbiosis with Winter Wheat

et al. 2020

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Arbuscular mycorrhizal (AM) fungi establish close interactions with host plants, an estimated 80% of vascular plant species. The host plant receives additional soil bound nutrients that would otherwise not be available. Other components of the microbiome, such as rhizobacteria, may influence interactions between AM fungi and the host plant. Within a commercial arable crop selected rhizobacteria in combination with AM fungi may benefit crop yields. The precise nature of interactions between rhizobacteria and AM fungi in a symbiotic relationship overall requires greater understanding. The present study aims to assess this relationship by quantifying: (1) AM fungal intracellular root structures (arbuscules) and soil glomalin as an indicator of AM fungal growth; and (2) root length and tiller number as a measure of crop growth, in response to inoculation with one of three species of Bacillus: B. amyloliquefaciences, B. pumilis, or B. subtilis. The influence of soil management, conventional (CT) or zero tillage (ZT) was a further variable evaluated. A significant (p < 0.0001) species-specific impact on the number of quantifiable AM fungal arbuscules was observed. The inoculation of winter wheat (Triticum aestivum) with B. amyloliquefaciences had a positive impact on AM fungal symbiosis, as indicated by an average of 3226 arbuscules per centimetre of root tissue. Bacillus subtilis increased root length significantly (p < 0.01) but decreased fungal symbiosis (p < 0.01). The inoculation of field soils altered the concentration of glomalin, an indicator of AM fungal growth, significantly (p < 0.00001) for each tillage treatment. The greatest increase was associated with B. amyloliquefaciences for both CT (p < 0.0001) and ZT (p < 0.00001). Bacillus subtilis reduced measured glomalin significantly in both tillage treatments (p < 0.0001 and p < 0.00001 for CT and ZT respectively). The interaction between rhizobacteria and AM fungi is variable, being beneficial or detrimental depending on species. This relationship was evident in both tillage treatments and has important implications for maximizing symbiosis in the crop plant-microbiome present in agricultural systems.

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“…An increase in plant biomass from the inoculation of soils with select Bacilli spp . is also reported by [ 43 ]. Application of the Bonferroni factor to the data and Bacilli spp .…”

Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 57%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Species-Specific Interactions of Bacillus Innocula and Arbuscular Mycorrhizal Fungi Symbiosis with Winter Wheat

et al. 2020

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“…Plants, AMF and bacteria can therefore be considered tripartite associations leading to a consortium promoting plant growth [18]. The interaction between the micro-organisms in the rhizosphere influences plant growth and production and health directly or indirectly in agricultural and natural habitats by providing nutritional elements and resistance to biotic and abiotic stresses [19]. Therefore these symbiotic relationships between the soil microbes are known to have an advantageous effect on plants by improving the accessibility of the nutrients to the host plants and inducing the plant defenses against different stresses such as drought and salinity [17].…”

Section: Introductionmentioning

confidence: 99%

Effects of Nitroxin and arbuscular mycorrhizal fungi on the agro-physiological traits and grain yield of sorghum (Sorghum bicolor L.) under drought stress conditions

Kamali

Mehraban

2020

PLoS ONE

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The use of bio-fertilizers in agro-ecosystems is considered to have the potential to improve plant growth in extreme environments featuring water shortages. However, while arbuscular mycorrhizal fungi (AMF) and bacteria bio-fertilizers have been used in other plants to enhance stress tolerance, little is known about their symbiotic effect on sorghum (Sorghum bicolor L.) growth under drought stress conditions. Therefore the aim of this study was to investigate the inoculation of sorghum with Nitroxin and Glomus mosseae and their interaction effects on the agro-physiological characteristics and grain yield of sorghum under drought stress conditions. Nitroxin is a bio-fertilizer that consists of a mixture of Azospirillum and Azotobacter bacteria. The results showed that co-inoculation of sorghum seeds with Nitroxin and AMF improved the chlorophyll (a, b and total) content, soluble proteins, water use efficiency) WUE(, relative water content (RWC), nitrogen (N) content in the plant, AMF spore density, proline content, grain yield, panicle length, the number of panicles per plant, grain number per panicle, 1000-grain weight and decreased the electrolyte leakage and water saturation deficit (WSD) in drought stress and non-stress conditions. Under drought stress conditions, there was a 27% increase in grain yield under the synergistic effects of bacteria and fungi compared to the non-application of these microorganisms. The results of this experiment show that Nitroxin and AMF bio-fertilizers can mitigate the negative effects of stress on plants in drought stress conditions by increasing the amount of photosynthetic pigments, soluble proteins and osmotic regulation and decreasing electrolyte leakage. We found that the combination of bacteria and AMF for sorghum growth and yield increment is a promising method to cope with the stress caused by drought.

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Arbuscular mycorrhiza increases the facilitation between adult plant and seedling but root‐knot nematode inhibits it

Wang,

Zhou,

Tang

2024

Ecosphere

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Soil biotic and abiotic factors can affect the interaction between invasive and native species. However, it is not yet clear how arbuscular mycorrhizal (AM) symbiosis affects the interaction between adult invasive plants and neighboring seedlings. We used an invasive weed (Bidens frondosa) to test the hypothesis that adult invasive plants facilitate the growth of neighboring seedlings through AM symbiosis, and this facilitation can be inhibited by the biological stress of root‐knot nematode infection. The results showed that the height and total biomass of seedlings near the adult plant increased, indicating that the belowground effects mediated by AM symbiosis played a facilitative role. The positive growth response to resource allocation between adult plant and neighboring seedlings through mycorrhizal connection was inhibited when adult plants were infected by root‐knot nematode. Only the total biomass and root–shoot ratio of adult plants were increased, while seedling growth performance did not change. Our results supported the hypothesis that adult invasive plants can facilitate their neighboring seedlings growth through AM symbiosis and the benefits vary with biotic stress on adult plant. These findings provided important evidence to explain the role of AM symbiosis in plant invasion.

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Interaction between arbuscular mycorrhizal fungi and Bacillus spp. in soil enhancing growth of crop plants

Cited by 134 publications

References 59 publications

Species-Specific Interactions of Bacillus Innocula and Arbuscular Mycorrhizal Fungi Symbiosis with Winter Wheat

Species-Specific Interactions of Bacillus Innocula and Arbuscular Mycorrhizal Fungi Symbiosis with Winter Wheat

Effects of Nitroxin and arbuscular mycorrhizal fungi on the agro-physiological traits and grain yield of sorghum (Sorghum bicolor L.) under drought stress conditions

Arbuscular mycorrhiza increases the facilitation between adult plant and seedling but root‐knot nematode inhibits it

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