Drought-Tolerant Bacteria and Arbuscular Mycorrhizal Fungi Mitigate the Detrimental Effects of Drought Stress Induced by Withholding Irrigation at Critical Growth Stages of Soybean (Glycine max, L.)

Microorganisms, Journal Year: 2024, Volume and Issue: 12(6), P. 1123 - 1123

Published: May 31, 2024

Considering current global climate change, drought stress is regarded as a major problem negatively impacting the growth of soybeans, particularly at critical stages R3 (early pod) and R5 (seed development). Microbial inoculation an ecologically friendly low-cost-effective strategy for helping soybean plants withstand stress. The present study aimed to isolate newly drought-tolerant bacteria from native soil evaluated their potential producing growth-promoting substances well understanding how these isolated along with arbuscular mycorrhizal fungi (AMF) could mitigate in field experiment. In this study, 30 Bradyrhizobium isolates rhizobacterial were nodules rhizosphere, respectively. Polyethylene glycol (PEG) 6000 was used evaluating tolerance drought, then production promotion under both without/with PEG. most effective (DTB4 DTR30) identified genetically using 16S rRNA gene. A experiment conducted impact DTB4 DTR30 AMF (Glomus clarum, Funneliformis mosseae, Gigaspora margarita) on yield drought-stressed soybeans. Our results showed that bioinoculant applications improved traits (shoot length, root leaf area, dry weight), chlorophyll content, nutrient content (N, P, K), nodulation, components (pods number, seeds weight, grain yield) (p ≤ 0.05). Moreover, proline contents decreased due when compared uninoculated treatments. As count bacteria, colonization indices, activity enzymes (dehydrogenase phosphatase) enhanced rhizosphere This study’s findings imply mixture bioinoculants may help stress, during stages, growth, productivity, microbial

Language: Английский

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Strategies and prospects for biostimulants to alleviate abiotic stress in plants

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: Dec. 22, 2022

Global climate change-induced abiotic stresses (e.g., drought, salinity, extreme temperatures, heavy metals, and UV radiation) have destabilized the fragile agroecosystems impaired plant performance thereby reducing crop productivity quality. Biostimulants, as a promising eco-friendly approach, are widely used to address environmental concerns fulfill need for developing sustainable/modern agriculture. Current knowledge revealed that animal derived stimulants seaweeds phytoextracts, humic substances, protein hydrolysate) well microbial beneficial bacteria or fungi) great potential elicit tolerance various thus enhancing growth performance-related parameters (such root growth/diameter, flowering, nutrient use efficiency/translocation, soil water holding capacity, activity). However, successfully implement biostimulant-based agriculture in field under changing climate, understanding of agricultural functions action mechanism biostimulants coping with at physicochemical, metabolic, molecular levels is needed. Therefore, this review attempts unravel underlying mechanisms mediated by diverse relation stress alleviation discuss current challenges their commercialization implementation conditions.

Language: Английский

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Arbuscular Mycorrhizal Fungi Improve the Growth, Water Status, and Nutrient Uptake of Cinnamomum migao and the Soil Nutrient Stoichiometry under Drought Stress and Recovery

Journal of Fungi, Journal Year: 2023, Volume and Issue: 9(3), P. 321 - 321

Published: March 5, 2023

Drought greatly influences the growth and ecological stoichiometry of plants in arid semi-arid regions such as karst areas, where Cinnamomum migao (C. migao) is an endemic tree species that used a bioenergy resource. Arbuscular mycorrhizal fungi (AMF) play key role nutrient uptake soil-plant continuum, increasing plant tolerance to drought. However, few studies have examined contribution AMF improving C. seedlings soil under drought-stress conditions. A pot experiment was conducted natural light plastic greenhouse investigate effects individual inoculation Co-inoculation [Funneliformis mosseae (F. mosseae) Claroideoglomus etunicatum etunicatum)] on growth, water status, well well-watered (WW) (DS) The results showed compared with non-AMF control (CK), AM symbiosis significantly stimulated had higher dry mass. Mycorrhizal better status than corresponding CK plants. colonization notably increased total nitrogen phosphorus content CK. leaf stem carbon concentrations indicated protects against drought stress by uptake. In general, formed most beneficial effect among all treatments. future, we should study more about biological characteristics each field understand responses stress, which can provide meaningful guidance for afforestation projects regions.

Language: Английский

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Enhancing Sorghum Growth: Influence of Arbuscular Mycorrhizal Fungi and Sorgoleone

Microorganisms, Journal Year: 2025, Volume and Issue: 13(2), P. 423 - 423

Published: Feb. 15, 2025

The low availability of phosphorus (P) in soil is one the main constraints on crop production. Plants have developed several strategies to increase P use efficiency, including modifications root morphology, exudation different compounds, and associations with microorganisms such as arbuscular mycorrhizal fungi (AMF). This study aimed investigate effect sorgoleone compound AMF colonization its subsequent impact uptake, rhizosphere microbiota, sorghum growth. experiment was conducted a greenhouse using genotype P9401, known for Three doses purified (20 μM, 40 80 μM) were added low-P plants harvested after 45 days. Treatments included inoculation Rhizophagus clarus negative control without inoculum. addition μM did not significantly mycorrhization. However, treatment 20 combined R. increased total biomass by 1.6-fold (p ≤ 0.05) compared non-inoculated treatment. influenced only fungal affecting bacterial community, whereas showed no either. activities acid alkaline phosphatases rhizospheric differ among treatments. Furthermore, genes CYP71AM1, associated biosynthesis, Sb02g009880, Sb06g002560, Sb06g002540, Sb03g029970 (related phosphate transport induced mycorrhiza) upregulated fine roots under these conditions. concentration can enhance promote plant growth conditions, altering microbiota.

Language: Английский

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Enhancing consistency in arbuscular mycorrhizal trait-based research to improve predictions of function

Mycorrhiza, Journal Year: 2025, Volume and Issue: 35(2)

Published: Feb. 26, 2025

Language: Английский

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Synonymization of three species of Rhizophagus based on morphological and molecular evidence and biogeography of Rhizophagus clarus

Mycorrhiza, Journal Year: 2025, Volume and Issue: 35(2)

Published: Feb. 28, 2025

Language: Английский

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Role of arbuscular mycorrhizal fungi in drought-resilient soybeans (Glycine max L.): unraveling the morphological, physio-biochemical traits, and expression of polyamine biosynthesis genes

Botanical studies, Journal Year: 2025, Volume and Issue: 66(1)

Published: March 17, 2025

Abstract Background Drought stress is a catastrophic abiotic stressor that impedes the worldwide output of commodities and development plants. The Utilizing biological antioxidant stimulators, Arbuscular mycorrhizal fungi (AMF) are one example increased plants' ability to withstand effects drought. symbiotic response soybean ( Glycine max L.) AMF inoculation was assessed in experiment presented herewith at different watering regimes (field capacity 25, 50, 90%). vegetative, physio-biochemical traits, regulation genes involved polyamine synthesis G. plants were evaluated. Results results obtained suggested has an advantage over non-inoculated terms their growth all criteria, which responded drought by showing slower development. It evident gas exchange parameters plant substantially reduced 36.79 (photosynthetic rate; A ), 60.59 (transpiration E 53.50% (stomatal conductance gs respectively, under severe comparison control; non-stressed treatment. However, resulted 40.87, 29.89, 33.65% increase , levels, extremely drought-stressful circumstances, when contrast non-AMF grown well-watered conditions. level inversely proportional colonization. total capacity, protein, proline contents enhanced inoculation, while malondialdehyde hydrogen peroxide decreased. Polyamine biosynthesis expression; Ornithine decarboxylase (ODC2), Spermidine synthase (SPDS) Spermine (SpS) upregulated even higher AMF’s mild inoculated plants’ shoots. This implies plays apart survival stressed membranes damage limiting excessive production oxidative generators; ROS. Conclusions In summary, present investigation demonstrates may be supportable environmentally advantageous method for improving growth, incident limited water availability.

Language: Английский

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Rhizosphere Microbiomes Mediating Abiotic Stress Mitigation for Improved Plant Nutrition

Ecologies, Journal Year: 2024, Volume and Issue: 5(3), P. 375 - 401

Published: July 27, 2024

The extreme conditions linked with abiotic stresses have greatly affected soil and plant health. diverse biochemical activities occurring in the environment been attributed to shaping dynamics of plant–soil microbiomes by contributing microbial lifestyles enhancing functional properties boost tolerance abiotic-induced stresses. Soil play crucial roles nutrition stress management through mechanisms. With current insights into use engineered microbes as single or combined inoculants, their has contributed fitness stability under different environmental activating defense mechanisms, enzyme production (lowering free radicals resulting oxidative stress), protein regulation, growth factors. detection certain genes involved factors can underline functions mitigating stress. Hence, projections for sustainable eco-friendly agriculture possible exploration beneficial rhizosphere manage effect on remain critical points discussion recently, prospects ensuring food security. Therefore, this review focuses impacts mitigation nutrition.

Language: Английский

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Boosting Sustainable Agriculture by Arbuscular Mycorrhiza under Stress Condition: Mechanism and Future Prospective

BioMed Research International, Journal Year: 2022, Volume and Issue: 2022, P. 1 - 28

Published: Dec. 29, 2022

Global agriculture is frequently subjected to stresses from increased salt content, drought, heavy metals, and other factors, which limit plant growth production, deteriorate soil health, constitute a severe danger global food security. Development of environmentally acceptable mitigation techniques against restrictions on the use chemical fertilizers in agricultural fields essential. Therefore, eco-friendly practises must be kept prevent detrimental impacts stress regions. The advanced metabolic machinery needed handle this issue not now existent plants deal stresses. Research has shown that key role mechanisms arbuscular mycorrhiza fungi (AMF) enhance nutrient uptake, immobilisation translocation growth-promoting attributes may suitable agents for under diversed stressed condition. successful symbiosis functional relationship between AMF build protective regulatory mechansm challenge particular stress. AMF's compatibility with hyperaccumulator also been supported by studies gene regulation theoretical arguments. In order address account, present review included reducing biotic abiotic through AMF, improve host plant's capacity endure stress, strategies employed AM fungus support survival stressful conditions.

Language: Английский

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Biostimulants: paving way towards sustainable agriculture and food security

Theoretical and Experimental Plant Physiology, Journal Year: 2024, Volume and Issue: 36(2), P. 139 - 163

Published: April 22, 2024

Language: Английский

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