Soil salinity and drought tolerance: An evaluation of plant growth, productivity, microbial diversity, and amelioration strategies

Plant Stress, Год журнала: 2023, Номер 11, С. 100319 - 100319

Опубликована: Дек. 10, 2023

Global climate change affects weather patterns, affecting soil salinity and drought tolerance. Crop resilience agriculture sustainability can be enhanced by exploring salinity, plant tolerance, microbial diversity, remediation techniques. This review examines the morpho-physiological, molecular, genetic mechanisms underlying adaptation to stress. It highlights their impact on growth, productivity, diversity. Diverse methods are investigated tackle stress, encompassing chemical, physical, biological approaches. Additionally, water-efficient agricultural practices drought-resistant crop varieties presented as ways increase tolerance these stresses. These implications for sustainable emphasize potential of findings optimize resource utilization, yield, promote environmental sustainability. The concludes discussing future research directions, particularly need more study into molecular basis plant-microbe interactions stress mechanisms. By advancing our knowledge in this field, we develop innovative solutions mitigate ensuring food security changing climates.

Язык: Английский

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A Review on the Role of Endophytes and Plant Growth Promoting Rhizobacteria in Mitigating Heat Stress in Plants

Microorganisms, Год журнала: 2022, Номер 10(7), С. 1286 - 1286

Опубликована: Июнь 24, 2022

Among abiotic stresses, heat stress is described as one of the major limiting factors crop growth worldwide, high temperatures elicit a series physiological, molecular, and biochemical cascade events that ultimately result in reduced yield. There growing interest among researchers use beneficial microorganisms. Intricate highly complex interactions between plants microbes alleviation stress. Plant–microbe are mediated by production phytohormones, siderophores, gene expression, osmolytes, volatile compounds plants. Their interaction improves antioxidant activity accumulation compatible osmolytes such proline, glycine betaine, soluble sugar, trehalose, enriches nutrient status stressed Therefore, this review aims to discuss response understand mechanisms microbe-mediated on physio-molecular basis. This indicates have great potential enhance protection from plant Owing metabolic diversity microorganisms, they can be useful mitigating In regard, microorganisms do not present new threats ecological systems. Overall, it expected continued research tolerance will enable technology used an ecofriendly tool for sustainable agronomy.

Язык: Английский

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Mitigating drought stress by application of drought-tolerant Bacillus spp. enhanced root architecture, growth, antioxidant and photosynthetic genes expression in sugarcane

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 12, 2025

Язык: Английский

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Biochar Amendment in Combination with Endophytic Bacteria Stimulates Photosynthetic Activity and Antioxidant Enzymes to Improve Soybean Yield Under Drought Stress

Journal of soil science and plant nutrition, Год журнала: 2022, Номер 23(1), С. 746 - 760

Опубликована: Дек. 8, 2022

Abstract The beneficial effects of biochar (BC) and plant growth-promoting bacteria (PGPR) to increase crop yields under harsh environments have been widely reported. However, the knowledge on synergistic BC PGPR induce drought tolerance in oilseeds is scant. In present study, cotton sticks derived together with strains ( Paraburkholderia phytofirmans Bacillus sp.) were examined water-stressed soybean plants. Initially, application rates (1% 2%) for optimized a pilot experiment (experiment I), most effective level (1%) was selected further studies second experiment. plants raised pots semi-controlled conditions subjected stress (25–30% water holding capacity) at pod formation stage. comparison control, drought-mediated decrease photosynthetic pigments gas exchange characteristics markedly lower PGPR-treated maximum (12–30%) enzymatic antioxidant activities (5–20%) recorded treated + P. , whereas no significant observed combined sp. deficit conditions. Similarly, considerably increased grain yield (14%) We conclude that could be utilized as an strategy improve dry arid regions.

Язык: Английский

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Phyto-microbiome to mitigate abiotic stress in crop plants

Frontiers in Microbiology, Год журнала: 2023, Номер 14

Опубликована: Авг. 2, 2023

Plant-associated microbes include taxonomically diverse communities of bacteria, archaebacteria, fungi, and viruses, which establish integral ecological relationships with the host plant constitute phyto-microbiome. The phyto-microbiome not only contributes in normal growth development plants but also plays a vital role maintenance homeostasis during abiotic stress conditions. Owing to its immense metabolic potential, provides capability mitigate through various mechanisms like production antioxidants, hormones, bioactive compounds, detoxification harmful chemicals toxins, sequestration reactive oxygen species other free radicals. A deeper understanding structure functions complex mediated mitigation would enable utilization for alleviation crop stress-resistant crops. This review aims at exploring potential alleviate drought, heat, salinity heavy metal finding sustainable solutions enhance agricultural productivity. mechanistic insights into phytomicrobiome imparting tolerance have been summarized, that be helpful novel bioinoculants. high-throughput modern approaches involving candidate gene identification target modification such as genomics, metagenomics, transcriptomics, metabolomics, based genetic engineering discussed wake ever-increasing demand climate resilient plants.

Язык: Английский

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Mitigation of water scarcity with sustained growth of Rice by plant growth promoting bacteria

Frontiers in Plant Science, Год журнала: 2023, Номер 14

Опубликована: Янв. 23, 2023

Climate change augments the risk to food security by inducing drought stress and a drastic decline in global rice production. Plant growth-promoting bacteria (PGPB) have been known improve plant growth under stress. Here present study, we isolated, identified, well-characterized eight drought-tolerant from rhizosphere that are tolerant 20% PEG-8000. These strains exhibited multiple traits, i.e., 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activity, exopolysaccharide production, phosphate (P)-solubilizing activity (51–356 µg ml -1 ), indole-3 acetic (IAA) production (14.3–46.2 of organic acids (72–178 ). Inoculation bacterial consortium ( Bacillus subtilis NM-2, Brucella haematophilum NM-4, cereus NM-6) significantly improved seedling vigor index (1009.2-1100) as compared non-inoculated stressed plants (630-957). Through rhizoscanning, efficiency was validated root parameters such length (17%), diameter, surface area (18%) all tested genotypes with respective treatments. Furthermore, response inoculation on three positively correlated ameliorating traits accumulation osmoprotectant, proline (85.8%–122%), relative water content (51%), membrane stability (64%), antioxidant enzymes reduce oxidative damage reactive oxygen species. A decrease temperature chlorophyll inoculated were found using infrared thermal imaging soil analyzer development (SPAD), respectively. The key supporting role toward responses robust techniques like an gas analyzer. principal component analysis depicts contribution yield integration genotype (NIBGE-DT02) potential strains, NM-6, can serve effective bioinoculant cope scarcity current alarming issues related fluctuating climate.

Язык: 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, Год журнала: 2023, Номер 9(3), С. 321 - 321

Опубликована: Март 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.

Язык: Английский

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Osmolyte-producing microbial biostimulants regulate the growth of Arachis hypogaea L. under drought stress

BMC Microbiology, Год журнала: 2024, Номер 24(1)

Опубликована: Май 15, 2024

Abstract Globally, drought stress poses a significant threat to crop productivity. Improving the tolerance of crops with microbial biostimulants is sustainable strategy meet growing population’s demands. This research aimed elucidate biostimulants’ (Plant Growth Promoting Rhizobacteria) role in alleviating oil-seed crops. In total, 15 bacterial isolates were selected for and screened plant growth-promoting (PGP) attributes like phosphate solubilization production indole-3-acetic acid, siderophore, hydrogen cyanide, ammonia, exopolysaccharide. describes two PGPR strains: Acinetobacter calcoaceticus AC06 Bacillus amyloliquefaciens BA01. The present study demonstrated that these strains (AC06 BA01) produced abundant osmolytes under osmotic stress, including proline (2.21 1.75 µg ml − 1 ), salicylic acid (18.59 14.21 trehalose (28.35 22.74 mg FW) glycine betaine (11.35 7.74 g ) respectively. BA01 further evaluated their multifunctional performance by inoculating Arachis hypogaea L. (Groundnut) mild severe regimes (60 40% Field Capacity). Inoculation displayed distinct osmotic-adjustment abilities groundnut, such as growth parameters, biomass, photosynthetic pigments, relative water content, proline, soluble sugar respective control during drought. On other hand, sensitivity indexes electrolyte leakage malondialdehyde (MDA) contents decreased well cooperatively conferred induced alterations indicators catalase (CAT), ascorbate peroxidase (APX), superoxide dismutase (SOD). Thus, sp. can be considered osmolyte producing simultaneously induce metabolic changes groundnuts stress.

Язык: Английский

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Combined Effect of Biochar and Plant Growth-Promoting Rhizbacteria on Physiological Responses of Canola (Brassica napus L.) Subjected to Drought Stress

Journal of Plant Growth Regulation, Год журнала: 2024, Номер 43(6), С. 1814 - 1832

Опубликована: Янв. 28, 2024

Abstract Biochar (BC) and plant growth-promoting microbes (PGPR) could represent a suitable agronomical strategy to mitigate the impacts of drought in arid agro-environmental conditions. However, there is currently little understanding synergistic benefit combining BC PGPR increase tolerance oilseeds. In this study, physiological response two water-stressed canola ( Brassica napus L.) plants subjected application obtained from waste wood Morus alba applied solely or combination with strains Pseudomonas sp.) was evaluated. The experiment consists genotypes nine treatments [(C-Control, T1-15 days (15DD), T2-30 (30DD), T3-15 + PG (15DD PG), T4-30 (30DD T5-15 biochar BC), T6-30 T7-15 T8-30 PG)]. Drought stress decreased emergence energy (EE), leaf area index (LAI), ratio (LAR), root shoot (RSR), moisture content leaves (MCL), percent (%MC), (MCS) (MCR), relative water (RWC) both varieties L., which contrast, it increased by collective PGPR. varieties, N, P, K, Mg, Ca concentrations were highest all PGPRs separate combined treatments, while lowest 15 30 treatments. Osmolyte contents like Glycine betaine (GB) sugar remarkably condition then reduced due has repressive effect on antioxidant enzymatic system Peroxidase (POD), Superoxide dismutase (SOD), glutathione reductase (GR) as well total flavonoids, phenolics, protein content. enzymes phenolic compounds dramatically action PGPRs. A significant EE, LAR, RSR, RWC under conditions, evidently highlighting results conclude substantial positive use canola's induced stress, regulating physiological, biochemical, agronomic traits plants. Graphical

Язык: Английский

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Foliar Endophytic Fungi: Interactions and Importance

Опубликована: Янв. 1, 2025

Язык: Английский

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