Arbuscular mycorrhizal fungi (AMF) promote the growth of the pioneer dune plant of coastal areas

Tivane, Rosmim AntÃ3nio; Victorino, Ãris; Guilundo, SÃ3nia Ventura; Oliveira, Rui S.; Martins, CÃ©lia MarÃ­lia; Quilambo, Orlando AntÃ3nio

doi:10.5897/ajmr2020.9385

Cited by 4 publications

(3 citation statements)

References 45 publications

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“…However, only 13 were detected in the roots (Fig 3A ), like the previously observed reduction of the fungal diversity between the soil and the root found by other works [56,57]. Although plants like Brachiaria, Crotalaria, and Canavalia are known for setting up arbuscular mycorrhizal interactions that improve their growth under unfavorable conditions [58][59][60][61], we did not detect D. celata and G. margarita in the roots (Fig 3A ; S1 Table ; Table 2). The low abundance of Glomeromycota associated with roots is a common pattern found in several cultivated species, such as Agave [62], sugarcane [54], cactus [55], and wheat [58,[62][63][64].…”

Section: Assembly Of Microbial Communitiessupporting

confidence: 85%

Section: Discussionmentioning

confidence: 62%

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A study of microbial diversity in a biofertilizer consortium

Hernández-Álvarez,

Peimbert,

Rodríguez-Martin

et al. 2023

PLoS ONE

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Biofertilizers supply living microorganisms to help plants grow and keep their health. This study examines the microbiome composition of a commercial biofertilizer known for its plant growth-promoting activity. Using ITS and 16S rRNA gene sequence analyses, we describe the microbial communities of a biofertilizer, with 163 fungal species and 485 bacterial genera found. The biofertilizer contains a variety of microorganisms previously reported to enhance nutrient uptake, phytohormone production, stress tolerance, and pathogen resistance in plants. Plant roots created a microenvironment that boosted bacterial diversity but filtered fungal communities. Notably, preserving the fungal-inoculated substrate proves critical for keeping fungal diversity in the root fraction. We described that bacteria were more diverse in the rhizosphere than in the substrate. In contrast, root-associated fungi were less diverse than the substrate ones. We propose using plant roots as bioreactors to sustain dynamic environments that promote the proliferation of microorganisms with biofertilizer potential. The study suggests that bacteria grow close to plant roots, while root-associated fungi may be a subset of the substrate fungi. These findings show that the composition of the biofertilizer may be influenced by the selection of microorganisms associated with plant roots, which could have implications for the effectiveness of the biofertilizer in promoting plant growth. In conclusion, our study sheds light on the intricate interplay between plant roots and the biofertilizer’s microbial communities. Understanding this relationship can aid in optimizing biofertilizer production and application, contributing to sustainable agricultural practices and improved crop yields.

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Section: Assembly Of Microbial Communitiessupporting

confidence: 85%

Section: Discussionmentioning

confidence: 62%

A study of microbial diversity in a biofertilizer consortium

Hernández-Álvarez,

Peimbert,

Rodríguez-Martin

et al. 2023

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…Fig 3A), similar to the previously observed reduction of the fungal diversity between the soil and the root found by other works[47,48]. Although plants like Brachiaria, Crotalaria, and Canavalia are known for establishing arbuscular mycorrhizal interactions that improve their growth under unfavorable conditions[49][50][51][52], we did not detect D. celata and G. margarita in the roots(Fig 3A;S1 Table…”

supporting

confidence: 91%

A Study of Microbial Diversity in a Biofertilizer Consortium

Hernández-Álvarez,

Peimbert,

Rodríguez-Martin

et al. 2023

Preprint

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Biofertilizers supply living microorganisms to help plants grow and maintain their health. In this study, we examine the microbiome composition of a commercial biofertilizer that has been proven to promote plant growth. Using ITS and 16S rRNA gene sequence analyses, we describe the microbial communities of the biofertilizer, with 182 fungal species and 964 bacterial genera identified. The biofertilizer contains a variety of microorganisms that had been reported to enhance nutrient uptake, phytohormone production, stress tolerance, and pathogen resistance in plants. Plant roots created a microenvironment that boosted bacterial diversity but filtered fungal communities. We propose using plant roots as bioreactors to sustain dynamic environments that promote the proliferation of microorganisms with biofertilizer potential. However, preserving the fungal-inoculated substrate is crucial to maintain fungal diversity in the root fraction. The study suggests that bacteria grow close to plant roots, while root-associated fungi may be a subset of the substrate fungi. These findings indicate that the composition of the biofertilizer may be influenced by the selection of microorganisms associated with plant roots, which could have implications for the effectiveness of the biofertilizer in promoting plant growth.

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Plant-associated bacteria and enzymes support Canavalia rosea growth in coastal hypersaline soils

Mbonambi,

Motsomane,

Ramdhani

et al. 2024

Symbiosis

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Canavalia rosea is an extremophilic legume that grows in hypersaline and nutrient-deficient ecosystems. The extremophilic nature of C. rosea may be attributed to its ability to establish symbiotic associations with nutrient mineralizing and plant growth promoting (PGP) bacteria housed in the nodules. This study examined legume-microbe symbiosis and plant nutrition of C. rosea growing in subtropical coastal zone in KwaZulu-Natal province, South Africa. Canavalia rosea adult plants of the same age from Westbrook, Scottburgh and Durban were collected for plant biomass and plant nutrition and root nodules were used for bacterial extraction and identification. Rhizosphere soils sampled from the three localities were used for bacterial extraction and identification, extracellular enzyme assays and soil characteristics (pH, nutrient concentrations, total cation, and exchange acidity). Westbrook, Scottburgh and Durban soils were nutrient-deficient with varying total cations, acid saturation and a pH range of 7.3–7.6. Soil nutrient mineralizing extracellular enzyme activities varied across study sites. The culturable bacterial strains isolated from the sampled soils belonged to the Pseudomonas, Pantoea and Flavobacterium genera. Canavalia rosea root nodules were nodulated by Pseudomonas guariconensis, Pseudomonas fulva, Pseudomonas fluorescens, Pseudomonas chlororaphis and Pseudomonas chlororaphis subsp. aurantiaca. Plants growing in Westbrook soils had a significantly higher total plant biomass compared to Scottburgh and Durban plants. Plant P concentration did not vary significantly between sites while plant N and C concentrations varied significantly. Plant-associated and soil bacteria with phosphorus (P) solubilising, nitrogen (N) cycling, and N fixing functions and associated enzymes seem to facilitate the mobilization of nutrients enabling C. rosea to thrive in hypersaline and low-nutrient environments.

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Arbuscular mycorrhizal fungi (AMF) promote the growth of the pioneer dune plant of coastal areas

Cited by 4 publications

References 45 publications

A study of microbial diversity in a biofertilizer consortium

A study of microbial diversity in a biofertilizer consortium

A Study of Microbial Diversity in a Biofertilizer Consortium

Plant-associated bacteria and enzymes support Canavalia rosea growth in coastal hypersaline soils

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