Recent advances in PGPR-mediated resilience toward interactive effects of drought and salt stress in plants

Frontiers in Microbiology, Год журнала: 2023, Номер 14

Опубликована: Сен. 27, 2023

The present crisis at hand revolves around the need to enhance plant resilience various environmental stresses, including abiotic and biotic ensure sustainable agriculture mitigate impact of climate change on crop production. One such promising approach is utilization growth-promoting rhizobacteria (PGPR) mediate these stresses. Plants are constantly exposed stress factors, as drought, salinity, pathogens, nutrient deficiencies, which can significantly reduce yield quality. PGPR beneficial microbes that reside in rhizosphere plants have been shown positively influence growth tolerance through mechanisms, solubilization, phytohormone production, induction systemic resistance. review comprehensively examines mechanisms promotes resilience, acquisition, hormonal regulation, defense induction, focusing recent research findings. advancements made field PGPR-mediated multi-omics approaches ( viz. , genomics, transcriptomics, proteomics, metabolomics) unravel intricate interactions between discussed their molecular pathways involved tolerance. Besides, also emphasizes importance continued implementation PGPR-based strategies address pressing challenges facing global food security commercialization bio-formulations for agricultural.

Язык: Английский

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Advances in Roles of Salicylic Acid in Plant Tolerance Responses to Biotic and Abiotic Stresses

Plants, Год журнала: 2023, Номер 12(19), С. 3475 - 3475

Опубликована: Окт. 4, 2023

A multitude of biotic and abiotic stress factors do harm to plants by bringing about diseases inhibiting normal growth development. As a pivotal signaling molecule, salicylic acid (SA) plays crucial roles in plant tolerance responses both stresses, thereby maintaining improving yields under stress. In view this, this paper mainly discusses the role SA stresses plants. regulates expression genes involved defense pathways, thus enhancing immunity. addition, mitigates negative effects acts as molecule induce stress-responsive synthesis stress-related proteins. also improves certain yield-related photosynthetic indexes, crop yield On other hand, with molecules, such jasmonic (JA), auxin, ethylene (ETH), so on, regulating This reviews recent advances SA’s tolerance, provide theoretical references for further studies concerning decryption molecular mechanisms improvement management

Язык: Английский

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The Roles of Plant-Growth-Promoting Rhizobacteria (PGPR)-Based Biostimulants for Agricultural Production Systems

Plants, Год журнала: 2024, Номер 13(5), С. 613 - 613

Опубликована: Фев. 23, 2024

The application of biostimulants has been proven to be an advantageous tool and appropriate form management towards the effective use natural resources, food security, beneficial effects on plant growth yield. Plant-growth-promoting rhizobacteria (PGPR) are microbes connected with roots that can increase by different methods such as producing hormones molecules improve or providing increased mineral nutrition. They colonize all ecological niches stages crop development, they affect development directly modulating hormone levels enhancing nutrient acquisition potassium, phosphorus, nitrogen, essential minerals, indirectly via reducing inhibitory impacts pathogens in forms biocontrol parameters. Many plant-associated species Pseudomonas, Acinetobacter, Streptomyces, Serratia, Arthrobacter, Rhodococcus improving disease resistance, synthesizing growth-stimulating hormones, suppressing pathogenic microorganisms. is both environmentally friendly practice a promising method enhance sustainability horticultural agricultural production systems well promote quantity quality foods. also reduce global dependence hazardous chemicals. Science Direct, Google Scholar, Springer Link, CAB Scopus, Taylor Francis, Web Science, Wiley Online Library were checked, search was conducted manuscript sections accordance terms Enterobacter, Ochrobactrum, Rhodococcus, Biostimulants, Plant promoting rhizobactera, Stenotrophomonas. aim this survey plant-growth-promoting presenting case studies successful paradigms various crops.

Язык: Английский

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Applying microbial biostimulants and drought-tolerant genotypes to enhance barley growth and yield under drought stress

Frontiers in Plant Science, Год журнала: 2025, Номер 15

Опубликована: Янв. 7, 2025

With climate change, the frequency of regions experiencing water scarcity is increasing annually, posing a significant challenge to crop yield. Barley, staple consumed and cultivated globally, particularly susceptible detrimental effects drought stress, leading reduced yield production. Water adversely affects multiple aspects barley growth, including seed germination, biomass production, shoot root characteristics, osmotic status, photosynthesis, induces oxidative resulting in considerable losses grain its components. In this context, present review aims underscore importance selecting drought-tolerant genotypes utilizing bio-inoculants constructed from beneficial microorganisms as an agroecological approach enhance growth production resilience under varying environmental conditions. Selecting with robust physiological agronomic tolerance can mitigate diverse Plant Growth Promoting Rhizobacteria (PGPR) play crucial role promoting plant through nutrient solubilization, nitrogen fixation, phytohormone exopolysaccharide secretion, enzyme activity enhancement, many other mechanisms. Applying containing PGPR, improves barley's thereby minimizing caused by scarcity.

Язык: Английский

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Optimized drought tolerance in barley (Hordeum vulgare L.) using plant growth-promoting rhizobacteria (PGPR)

Biocatalysis and Agricultural Biotechnology, Год журнала: 2023, Номер 50, С. 102691 - 102691

Опубликована: Апрель 5, 2023

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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Harnessing abiotic elicitors to bolster plant's resistance against bacterial pathogens

Plant Stress, Год журнала: 2024, Номер 11, С. 100371 - 100371

Опубликована: Янв. 24, 2024

Bacterial pathogens have been of considerable interest in the field plant pathology as they are known to cause serious constraints crop production once infected. When environmental conditions favor disease development, well-known bacterial including Pseudomonas syringae, Ralstonia spp., and Xanthomonas spp. exert severe harmful impacts across a variety plants. The infect tissues' extracellular spaces release virulence factors directly into cytosol or apoplast host plant. In this context, developing long-lasting effective methods for controlling infections becomes essential maintaining sustainable agricultural production. However, conventional such copper-based bactericides antibiotics often proven be ineffective also adversely affect human health environment. Therefore, immense challenges offered by diseases global agriculture encouraged environment-friendly alternatives chemical pesticides. Abiotic elicitors chemicals with non-biological origins that activate defense mechanisms can potentially help protection. Numerous abiotic shown impressive effectiveness boosting defenses against infections, employing multiple induced resistance various crops. present review explores rapidly discusses their role strengthening through induction resistance, understanding immunity, highlighting both potential benefits current strengthen food security.

Язык: Английский

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Colonization of root endophytic fungus Serendipita indica improves drought tolerance of Pinus taeda seedlings by regulating metabolome and proteome

Frontiers in Microbiology, Год журнала: 2024, Номер 15

Опубликована: Март 15, 2024

Pinus taeda is an important forest tree species for plantations because of its rapid growth and high yield oleoresins. Although P. distribute in warm wet southern China, drought, sometime serious long time, often occurs the region. To explore drought tolerance usage beneficial microorganisms, seedlings were planted pots inoculated with root endophytic fungus Serendipita indica finally treated stress 53 d. Metabolome proteome their needles analyzed. The results showed that S. inoculation under caused great changes levels some metabolites needles, especially flavonoids organic acids. Among them, eriocitrin, trans -aconitic acid, vitamin C, uric alpha-ketoglutaric A, stachydrine, coumalic itaconic calceolarioside B, 2-oxoglutaric citric acid upregulated more than three times stress, compared to those non-inoculated stress. KEGG analysis pathways enriched such as flavonoid biosynthesis, ascorbate aldarate metabolism, C5-branched dibasic metabolism. Proteome revealed specific differential proteins. Two proteins, namely, H9X056 H9VDW5, only appeared protein H9VNE7 was 11.0 In addition, increased enrichment water deficient-inducible proteins (such LP3-1, LP3-2, LP3-3, dehydrins) involved ribosomal structures A0A385JF23). Meanwhile, biosynthesis metabolism pathways, mainly including phenylpropanoid cutin, suberine wax 2-oxocarboxylic there positive relationships between accumulation Altogether, our metabolome provided a guideline further study functions related

Язык: Английский

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Arbuscular mycorrhizal fungi build a bridge for soybeans to recruit Pseudomonas putida

New Phytologist, Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

Summary The assembly of the rhizosphere microbiome determines its functionality for plant fitness. Although interactions between arbuscular mycorrhizal fungi (AMF) and growth‐promoting rhizobacteria (PGPR) play important roles in growth disease resistance, research on division labor among members symbionts formed plants, AMF, PGPR, as well flow carbon sources, is still insufficient. To address above questions, we used soybean ( Glycine max ), Funneliformis mosseae , Pseudomonas putida KT2440 subjects to establish rhizobiont elucidate signal exchange these components. can attract P. by secreting cysteine a signaling molecule promote colonization rhizosphere. Colonized stimulate l ‐tryptophan secretion host lead upregulation genes involved converting methyl‐indole‐3‐acetic acid (Me‐IAA) into IAA response stimulation. Collectively, decipher tripartite mechanism microbial community via cross‐kingdom interactions.

Язык: Английский

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Plant growth promoting rhizobacteria and biochar production from Parthenium hysterophorus enhance seed germination and productivity in barley under drought stress

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

Опубликована: Июнь 8, 2023

Drought stress can significantly affect plant growth and development. Biochar (BC) growth-promoting rhizobacteria (PGPR) have been found to increase fertility development under drought conditions. The single effects of BC PGPR in different species widely reported abiotic stress. However, there relatively few studies on the positive role PGPR, BC, their combination barley (Hordeum vulgare L.). Therefore, current study investigated from Parthenium hysterophorus, tolerant (Serratia odorifera), + growth, physiology, biochemical traits plants for two weeks. A total 15 pots were used five treatments. Each pot 4 kg soil comprised control (T0, 90% water), alone (T1, 30% 35 mL PGPR/kg (T2, 2.5%/kg (T3, a (T4, water). Combined strongly mitigated negative by improving shoot length (37.03%), fresh biomass (52%), dry (62.5%), seed germination (40%) compared control. amendment treatment enhanced physiological traits, such as chlorophyll (27.9%), b (35.3%), (31.1%), Similarly, synergistic (p< 0.05) antioxidant enzyme activity including peroxidase (POD), catalase (CAT), superoxide dismutase (SOD) alleviate toxicity ROS. physicochemical properties (N, K, P, EL) soils also (85%, 33%, 52%, 58%) respectively, alone. findings this suggested that addition both will improve fertility, productivity, defense systems invasive P. hysterophorus be applied water-deficient areas crop production.

Язык: Английский

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