Plant growth promotion by Pseudomonas putida KT2440 under saline stress: role of eptA

Costa‐Gutierrez, Stefanie Bernardette; Lami, María Jesús; Santo, María Carolina Caram-Di; Zenoff, Ana María; Vincent, P; Molina‐Henares, María Antonia; Espinosa‐Urgel, Manuel; Cristóbal, Ricardo

doi:10.1007/s00253-020-10516-z

Cited by 57 publications

(48 citation statements)

References 75 publications

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“…P. aeruginosa rhamnolipid shows the wide range of the bacteria such as A. faecalis, E. coli, Micrococcus luteus, Mycobacterium phlei, Serratia Marcescens, and S. epidermidis. P. aeruginosa rhamnolipids are also show the antifungal activity against the Aspergillus niger, Aureobasidium pullulans, Chaetomium globosum, and Penicillium [76,78,93,118]. Rhamnolipids are also shows the antiviral activity against TMT and Potato X virus [97].…”

Section: Pseudomonas Spp Producing Rhamnolipidsmentioning

confidence: 99%

“…N-acyl homoserine lactone (AHL) based QS signaling molecules is predominantly seen among Gramnegative bacteria. Pseudomonad motility on semi-solid surfaces is mediated by type IV pili and peritrichous flagella [53,93] and Pyoverdine seems to be playing a major role in this locomotion as the mutations in pvdQ (which codes for stages of pyoverdine biosynthesis) resulted in bacterial motility loss [95].…”

Section: Cellular Communicationmentioning

confidence: 99%

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Interactive potential of Pseudomonas species with plants

Shaikh¹,

Yadav²,

Markande³

2020

J App Biol Biotech.

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Pseudomonas species or pseudomonads are known for their metabolic and ubiquitous diversity which enables them to survive in extreme conditions such as in marine and terrestrial environments as well as in association with flora and fauna. The sequenced genomes of many strains of Pseudomonas spp. show their vast repertoire of biotechnological applicability potential with respect to their genetic makeup and also exhibit industrially important applications due to physicochemical tolerances to extreme conditions (such as temperature, pH, and toxic chemicals and solvents). The best studied species include opportunistic human and plant pathogens, soil bacteria, and the plant growth-promoting pseudomonads. Pseudomonas species also are plant-commensals known for exhibiting effective antimicrobial activities and enabling plants to retrieve key nutrients. Hence, studying Pseudomonas with respect to its various characteristics in response to plant interactions is a far more important subject to be studied for their effective applications. In this review, the Pseudomonads have been analyzed extensively for their genome; biomolecules produced and plant beneficial activities. Thus, the present work helps future endeavors for Pseudomonad research by streamlining the areas.

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Section: Pseudomonas Spp Producing Rhamnolipidsmentioning

confidence: 99%

Section: Cellular Communicationmentioning

confidence: 99%

Interactive potential of Pseudomonas species with plants

Shaikh¹,

Yadav²,

Markande³

2020

J App Biol Biotech.

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“…Similar to sphingolipid metabolism, the reaction flux producing the final product of benzoxazinoid biosynthesis, DIMBOA, increased in N -. DIMBOA acts as a signaling molecule to attract the plant growth-promoting rhizobacteria Pseudomonas putida KT2440 (Costa-Gutierrez et al, 2020;Neal et al, 2012;Niemeyer, 2009). Such signaling role could also play important role during root growth in N -.…”

Section: Flux Range Variations Under Nitrogen Stress Condition In Hydroponic System Reveals Important Metabolic Reprogrammingmentioning

confidence: 99%

Dissecting the Metabolic Reprogramming of Maize Root under Nitrogen Limiting Stress Condition

Chowdhury

Schroeder

Sarkar

et al. 2021

Preprint

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The growth and development of maize (Zea mays L.) largely depends on its nutrient uptake through root. Hence, studying its growth, response, and associated metabolic reprogramming to stress conditions is becoming an important research direction. A genome-scale metabolic model (GSM) for the maize root was developed to study its metabolic reprogramming under nitrogen-stress condition. The model was reconstructed based on the available information from KEGG, UniProt, and MaizeCyc. Transcriptomics data derived from the roots of hydroponically grown maize plants was used to incorporate regulatory constraints in the model and simulate nitrogen-non-limiting (N−) and nitrogen-deficient (N−) conditions. Model-predicted result achieved 70% accuracy comparing to the experimental direction change of metabolite levels. In addition to predicting important metabolic reprogramming in central carbon, fatty acid, amino acid, and other secondary metabolism, maize root GSM predicted several metabolites (e.g., L-methionine, L-asparagine, L-lysine, cholesterol, and L-pipecolate) playing critical regulatory role in the root biomass growth. Furthermore, this study revealed eight phosphatidyl-choline and phosphatidyl-glycerol metabolites which even though not coupled with biomass production played a key role in the increased biomass production under N-. Overall, the omics-integrated-GSM provides a promising tool to facilitate stress-condition analysis for maize root and ultimately engineer better stress-tolerant maize genotypes.SummaryThe growth and development of maize (Zea mays L.) largely depends on its nutrient uptake through root. Hence, studying its growth, response, and associated metabolic reprogramming to stress conditions is becoming an important research direction.A genome-scale metabolic model (GSM) for the maize root was developed to study its metabolic reprogramming under nitrogen-stress condition. The model was reconstructed based on the available information from KEGG, UniProt, and MaizeCyc.Transcriptomics data derived from the roots of hydroponically grown maize plants was used to incorporate regulatory constraints in the model and simulate nitrogen-non-limiting (N+) and nitrogen-deficient (N−) conditions. Model-predicted result achieved 70% accuracy comparing to the experimental direction change of metabolite levels. In addition to predicting important metabolic reprogramming in central carbon, fatty acid, amino acid, and other secondary metabolism, maize root GSM predicted several metabolites (e.g., L-methionine, L-asparagine, L-lysine, cholesterol, and L-pipecolate) playing critical regulatory role in the root biomass growth. Furthermore, this study revealed eight phosphatidyl-choline and phosphatidyl-glycerol metabolites which even though not coupled with biomass production played a key role in the increased biomass production under N−.Overall, the omics-integrated-GSM provides a promising tool to facilitate stress-condition analysis for maize root and ultimately engineer better stress-tolerant maize genotypes.

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“…SL3 and Bacillus halodenitrificans PU62, the root elongation and dry weight of wheat seedlings under salt stress were increased by more than 90 and 17.4%, respectively, compared with those of uninoculated wheat seedlings (Ramadoss et al 2013 ). Under saline conditions, compared to uninoculated plants, inoculation with Pseudomonas putida KT2440 significantly improved seed germination and root and stem length of soybean and corn plants (Costa-Gutierrez et al 2020 ). These findings suggest that seed biopriming with different beneficial microorganisms can not only improve seed quality, but also improve seedling vigour and resistance to abiotic stress, thus providing an innovative crop protection tool for the sustainable improvement of crop yields.…”

Section: Introductionmentioning

confidence: 99%

“…The widely accepted definition of a plant biostimulant is any substance and/or microorganism applied to plants with the aim of enhancing nutrition efficiency, abiotic stress tolerance and/or crop quality traits, regardless of its nutrient content (du Jardin 2015 ). In recent years, the use of biostimulants to improve crop seed germination and emergence ability under abiotic and biotic stress has attracted much attention (Selvakumar et al 2017 ; Costa-Gutierrez et al 2020 ; Li et al 2020 ; Rafiq et al 2020 ). Our purpose was to isolate and identify the salt-tolerant beneficial strains to develop seed biostimulants, and to study the effects of biopriming on the seed germination and seedling emergence of different maize varieties under salt stress by means of a pre-sowing treatment with the probiotics as bio-initiators, so as to provide a basis for the research on improving seed quality.…”

Section: Introductionmentioning

confidence: 99%

Seed biostimulant Bacillus sp. MGW9 improves the salt tolerance of maize during seed germination

Yue

et al. 2021

AMB Expr

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Crop performance is seriously affected by high salt concentrations in soils. To develop improved seed pre-sowing treatment technologies, it is crucial to improve the salt tolerance of seed germination. Here, we isolated and identified the strain Bacillus sp. MGW9 and developed the seed biostimulant MGW9. The effects of seed biopriming with the seed biostimulant MGW9 in maize (Zea mays L.) under saline conditions were studied. The results show that the strain Bacillus sp. MGW9 has characteristics such as salt tolerance, nitrogen fixation, phosphorus dissolution, and indole-3-acetic acid production. Seed biopriming with the seed biostimulant MGW9 enhanced the performance of maize during seed germination under salinity stress, improving the germination energy, germination percentage, shoot/seedling length, primary root length, shoot/seedling fresh weight, shoot/seedling dry weight, root fresh weight and root dry weight. Seed biostimulant MGW9 biopriming also alleviated the salinity damage to maize by improving the relative water content, chlorophyll content, proline content, soluble sugar content, root activity, and activities of superoxide dismutase, catalase, peroxidase and ascorbate peroxidase, while decreasing the malondialdehyde content. In particular, the field seedling emergence of maize seeds in saline-alkali soil can be improved by biopriming with the seed biostimulant MGW9. Therefore, maize seed biopriming with the seed biostimulant MGW9 could be an effective approach to overcoming the inhibitory effects of salinity stress and promoting seed germination and seedling growth.

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Plant growth promotion by Pseudomonas putida KT2440 under saline stress: role of eptA

Cited by 57 publications

References 75 publications

Interactive potential of Pseudomonas species with plants

Interactive potential of Pseudomonas species with plants

Dissecting the Metabolic Reprogramming of Maize Root under Nitrogen Limiting Stress Condition

Seed biostimulant Bacillus sp. MGW9 improves the salt tolerance of maize during seed germination

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