Modulation of polyamine biosynthesis in Arabidopsis thaliana by a drought mitigating Pseudomonas putida strain

Sen, Sunetra; Ghosh, Daipayan; Mohapatra, Sridev

doi:10.1016/j.plaphy.2018.05.034

Cited by 52 publications

(21 citation statements)

References 62 publications

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“…The above results indicate that the function of PAs can differ among different plants and even different parts of the same plant, whether under osmotic stress or water stress (Sen et al, 2018). Therefore, the response of plants to exogenous PAs under osmotic stress and water stress will depend on the plant species.…”

Section: Polyamines and Abiotic Stress Responsesmentioning

confidence: 96%

Polyamine Function in Plants: Metabolism, Regulation on Development, and Roles in Abiotic Stress Responses

et al. 2019

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Polyamines (PAs) are low molecular weight aliphatic nitrogenous bases containing two or more amino groups. They are produced by organisms during metabolism and are present in almost all cells. Because they play important roles in diverse plant growth and developmental processes and in environmental stress responses, they are considered as a new kind of plant biostimulant. With the development of molecular biotechnology techniques, there is increasing evidence that PAs, whether applied exogenously or produced endogenously via genetic engineering, can positively affect plant growth, productivity, and stress tolerance. However, it is still not fully understood how PAs regulate plant growth and stress responses. In this review, we attempt to cover these information gaps and provide a comprehensive and critical assessment of the published literature on the relationships between PAs and plant flowering, embryo development, senescence, and responses to several (mainly abiotic) stresses. The aim of this review is to summarize how PAs improve plants' productivity, and to provide a basis for future research on the mechanism of action of PAs in plant growth and development. Future perspectives for PA research are also suggested.

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Section: Polyamines and Abiotic Stress Responsesmentioning

confidence: 96%

Polyamine Function in Plants: Metabolism, Regulation on Development, and Roles in Abiotic Stress Responses

et al. 2019

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“…Arginine can be used as the substrate for producing polyamines, including spermidine, spermine and their diamine precursor putrescine, which are the major polyamines involved in drought resistance [41][42][43]. Inocula-tion of A. thaliana with Pseudomonas putida GAP-P45 caused significant fluctuations in the expression of most polyamine biosynthetic genes and cellular levels of polyamines, including putrescine and spermidine, which positively correlated with the water stress tolerant phenotype of A. thaliana in response to P. putida GAP-P45 inoculation [44,45]. In our RNAseq results, TG1-E1 significantly up-regulated the expression of several genes involved in polyamine production, including Arginine decarboxylase 1 (SlADC1; Solyc10g054440), which is a rate-limiting enzyme for the biosynthesis of putrescine and other polyamines [46,47], as well as Adenosylmethionine decarboxylase 2 (SlSAMDC2; Solyc02g089610) and S-adenosyl-lmethionine decarboxylase (Solyc02g089615) which are involved in spermidine and spermine biosynthesis [48,49] (Table 5).…”

Section: Amino Acidsmentioning

confidence: 99%

Plant Transcriptome Reprograming and Bacterial Extracellular Metabolites Underlying Tomato Drought Resistance Triggered by a Beneficial Soil Bacteria

et al. 2021

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Water deficit is one of the major constraints to crop production and food security worldwide. Some plant growth-promoting rhizobacteria (PGPR) strains are capable of increasing plant drought resistance. Knowledge about the mechanisms underlying bacteria-induced plant drought resistance is important for PGPR applications in agriculture. In this study, we show the drought stress-mitigating effects on tomato plants by the Bacillus megaterium strain TG1-E1, followed by the profiling of plant transcriptomic responses to TG1-E1 and the profiling of bacterial extracellular metabolites. Comparison between the transcriptomes of drought-stressed plants with and without TG1-E1 inoculation revealed bacteria-induced transcriptome reprograming, with highlights on differentially expressed genes belonging to the functional categories including transcription factors, signal transduction, and cell wall biogenesis and organization. Mass spectrometry-based analysis identified over 40 bacterial extracellular metabolites, including several important regulators or osmoprotectant precursors for increasing plant drought resistance. These results demonstrate the importance of plant transcriptional regulation and bacterial metabolites in PGPR-induced plant drought resistance.

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“…Phaseolus vulgaris plants inoculated with Rhizobium showed improved metabolism of carbon and nitrogen and upregulation of trehalose-6-phosphate synthase gene 112,113 . Pseudomonas putida GAP-P45 showed upgraded expression of polyamine biosynthetic genes (ADC, AIH, CPA, SPDS, SPMS and SAMDC) and polyamine levels in Arabidopsis thaliana during drought stress 114,98 .…”

Section: Role Of Osmolytes On Drought Tolerance In Plantsmentioning

confidence: 99%

Rhizobacteriome: Promising Candidate for Conferring Drought Tolerance in Crops

Yadav¹,

Raghav²,

Sharma³

et al. 2020

J. Pure Appl. Microbiol.

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Drought is a global water shortage problem which poses challenge to crop productivity. Novel strategies are being tried to find out solution to sustain agriculture under drought conditions. Rhizobacteriome is an exclusive genetic material of bacteria resident to rhizosphere plays critical role to health and yield of plant. The interaction of rhizobacteriome with plant provides basis for protecting plants from various abiotic and biotic stresses. Plant growth promoting rhizobacteria (PGPR) are root-colonizing bacteria which produce array of enzymes and metabolites that assist plants to withstand harsh environmental conditions. Various formulations of rhizobacteria are being applied to enhance the tolerance or endurance to drought in crops which in turn increase crop productivity. This could be a one of the promising methods with wide potentiality to improve the growth and yield of crops under limited water resources and changing climatic conditions to ensure food security of the globe. In this review, we summarize (1) existing knowledge and understanding about the rhizobacteria, (2) their role in imparting tolerance to crops in drought conditions and (3) discuss future line of work in this frontier research area.

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Modulation of polyamine biosynthesis in Arabidopsis thaliana by a drought mitigating Pseudomonas putida strain

Cited by 52 publications

References 62 publications

Polyamine Function in Plants: Metabolism, Regulation on Development, and Roles in Abiotic Stress Responses

Polyamine Function in Plants: Metabolism, Regulation on Development, and Roles in Abiotic Stress Responses

Plant Transcriptome Reprograming and Bacterial Extracellular Metabolites Underlying Tomato Drought Resistance Triggered by a Beneficial Soil Bacteria

Rhizobacteriome: Promising Candidate for Conferring Drought Tolerance in Crops

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