Arbuscular mycorrhizal fungi as a potential biofertilizers for agricultural sustainability

Kumar, Anand; Pandey, Gaurav Kumar; Kaur, Tanvir; Pericak, Olivia; Olson, Collin; Mohan, Rajinikanth; Akansha, Kriti; Yadav, Ashok K.; Devi, Rubee; Kour, Divjot; Kumar, Ashutosh; Kumar, Manish; Yadav, Ajar Nath

doi:10.7324/jabb.2022.10s111

Cited by 15 publications

(4 citation statements)

References 183 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…AMF can enhance the resistance of host plants to various biotic and abiotic stresses, such as nutrient infertility, drought, heavy metal poisoning, low pH, pests and diseases, thereby improving the growth, yields, and quality of crops (Begum et al, 2019;Feng et al, 2020a;El-Sawah et al, 2021;Feng et al, 2022;Ma et al, 2022;Weng et al, 2022;Zhu et al, 2022). In this scenario, AMF are considered to be the most promising "biological fertilizers" and "biological pesticides" (Wilkes, 2021;Anand et al, 2022;Weng et al, 2022), and are likely to play an influential role in the agroforestry systems.…”

Section: Introductionmentioning

confidence: 99%

Exogenous myristate promotes the colonization of arbuscular mycorrhizal fungi in tomato

Liu,

Feng,

Zhang

et al. 2023

Front. Plant Sci.

View full text Add to dashboard Cite

Arbuscular mycorrhizal fungi (AMF) can establish symbiotic associations with the roots of most terrestrial plants, thereby improving the tolerance of the host plants to biotic and abiotic stresses. Although AMF cannot synthesize lipids de novo, they can obtain lipids from the root cells for their growth and development. A recent study reveals that AMF can directly take up myristate (C14:0 lipid) from the environment and produce a large amount of hyphae in asymbiotic status; however, the effect of environmental lipids on AM symbiosis is still unclear. In this study, we inoculated tomato (Solanum lycopersicum) with AMF in an in vitro dual culture system and a sand culture system, and then applied exogenous myristate to the substrate, in order to explore the effect of exogenous lipids on the mycorrhizal colonization of AMF. We investigated the hyphae growth, development, and colonization of AMF, and examined the gene expression involved in phosphate transport, lipid biosynthesis, and transport. Results indicate that exogenous lipids significantly stimulated the growth and branching of hyphae, and significantly increased the number of hyphopodia and mycorrhizal colonization of AMF, with arbuscular abundance and intraradical spores or vesicles being the most promoted. In contrast, exogenous myristate decreased the growth range and host tropism of the germ tubes, and largely inhibited the exchange of nutrition between symbionts. As a result, exogenous myristate did not affect the plant growth. This study suggests that lipids promote mycorrhizal colonization by enhancing the growth and development of AMF hyphae and increasing their contact opportunities with plant roots. To the best of our knowledge, this is the first report that shows that lipids promote the colonization of AMF. Our study highlights the importance of better understanding the roles of environmental lipids in the establishment and maintenance of AM symbiosis and, thus, in agricultural production.

show abstract

Section: Introductionmentioning

confidence: 99%

Exogenous myristate promotes the colonization of arbuscular mycorrhizal fungi in tomato

Liu,

Feng,

Zhang

et al. 2023

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…Agriculture 2024, 14, 367 2 of 11 Arbuscular mycorrhizal fungi (AMFs) are a group of soil microorganisms forming symbiotic associations with the roots of many higher plants, with the host providing the fungal partner with carbohydrates and the fungus providing the host partner with water and nutrients in exchange [5,6]. AMFs have been demonstrated to uptake water directly from the soil through well-developed mycorrhizal extraradical hyphae, and hyphae water uptake is critical for mycorrhizal plants' ability to survive drought stress [7].…”

Section: Introductionmentioning

confidence: 99%

Growth Performance and Osmolyte Regulation of Drought-Stressed Walnut Plants Are Improved by Mycorrhiza

Wen,

Zhou,

et al. 2024

Agriculture

View full text Add to dashboard Cite

This study aims to evaluate whether a selected arbuscular mycorrhizal fungus, Diversispora spurca, improves growth in drought-stressed walnut (Juglans regia L. cv. Qingxiang) plants and whether this improvement is associated with changes in osmolyte (fructose, glucose, sucrose, soluble protein, proline, and betaine) levels. After 60 days of soil drought treatment (50% of maximum field water-holding capacity), root D. spurca colonization rate and soil mycelium length decreased by 13.57% and 64.03%, respectively. Soil drought also inhibited the growth performance of aboveground (stem diameter, leaf number, leaf biomass, and stem biomass) and underground (root projected area, surface area, and average diameter) parts, with uninoculated plants showing a stronger inhibition than D. spurca-inoculated plants. D. spurca significantly increased these growth variables, along with aboveground part variables and root areas being more prominent under drought stress versus non-stress conditions. Although drought treatment suppressed the chlorophyll index and nitrogen balance index in leaves, mycorrhizal inoculation significantly increased these indices. Walnut plants were able to actively increase leaf fructose, glucose, sucrose, betaine, and proline levels under such drought stress. Inoculation of D. spurca also significantly increased leaf fructose, glucose, sucrose, betaine, proline, and soluble protein levels under drought stress and non-stress, with the increasing trend in betaine and soluble protein being higher under drought stress versus non-stress. Drought stress dramatically raised leaf hydrogen peroxide (H2O2) levels in both inoculated and uninoculated plants, while mycorrhizal plants presented significantly lower H2O2 levels, with the decreasing trend higher under drought stress versus non-stress. In conclusion, D. spurca symbiosis can increase the growth of drought-stressed walnut plants, associated with increased osmolyte levels and decreased H2O2 levels.

show abstract

“…Arbuscular mycorrhizal fungi (AMF) have been known for establishing symbiotic relationships with approximately 80% of terrestrial plant species [10]. Due to their positive impact on soil organic-matter degradation and nutrient cycling, improving soil fertility, plant nutrition, water absorption, soil-aggregate stability, salinity, and drought-stress reduction, together with overall crop growth and productivity, can be employed as bioinoculants in sustainable agriculture [11][12][13][14]. Therefore, AMF can be used as an amendment to enhance long-term soil fertility, plant nutrition, crop productivity, and yield quality, contributing to protection in agriculture and revival of agro-ecosystems [15,16].…”

Section: Introductionmentioning

confidence: 99%

Arbuscular Mycorrhizal Fungi as Biofertilizers to Increase the Plant Quality of Sour-Orange Seedlings

Navarro,

Morte

2024

Agronomy

View full text Add to dashboard Cite

In addressing the agricultural challenges posed by climate change, the use of biofertilizers, derived from living organisms, promotes environmentally friendly crop cultivation, and represents an adaptive strategy for sustainable agriculture in the face of climate uncertainty. Careful selection of the arbuscular mycorrhizal fungus (AMF) would represent a crucial step in mycorrhizal inoculation, considering the varying levels of compatibility between the AMF and the host plant. This study aimed to assess the impact of two AMF species that are prevalent in citrus soils of south-eastern Spain (Rhizophagus irregularis and Funneliformis mosseae) on the Citrus aurantium seedlings’ behavior. Sour-orange plants showed a high mycorrhizal dependence regardless of the specific AMF species. Both R. irregularis and F. mosseae fungi exhibited high colonization percentages, with R. irregularis outperforming F. mosseae in root colonization. Inoculation with both AMF yielded notable growth improvements, but R. irregularis exhibited higher positive effects in the long term. The heightened P nutrition and increased chlorophyll concentration significantly enhanced the performance of AMF-inoculated plants. With F. mosseae, plants showed more pronounced improvements in P nutrition and a stronger correlation of their dry mass with P concentration; however, in general, inoculation with R. irregularis produced a higher sour-orange-plant performance. Both R. irregularis and F. mosseae fungi produced strong positive effects in sour-orange growth, which positioned them as viable biofertilizer options. These results can contribute to enhancing understanding for the development of an improved design of biofertilizers used in regions that are vulnerable to climate change, such as south-eastern Spain. This promotes a shift towards more sustainable and environmentally friendly agricultural practices by reducing dependence on chemical fertilizers.

show abstract

Arbuscular mycorrhizal fungi as a potential biofertilizers for agricultural sustainability

Cited by 15 publications

References 183 publications

Exogenous myristate promotes the colonization of arbuscular mycorrhizal fungi in tomato

Exogenous myristate promotes the colonization of arbuscular mycorrhizal fungi in tomato

Growth Performance and Osmolyte Regulation of Drought-Stressed Walnut Plants Are Improved by Mycorrhiza

Arbuscular Mycorrhizal Fungi as Biofertilizers to Increase the Plant Quality of Sour-Orange Seedlings

Contact Info

Product

Resources

About