Transcriptional alterations reveal Bacillus amyloliquefaciens-rice cooperation under salt stress

Chauhan, Puneet Singh; Lata, Charu; Tiwari, Shalini; Chauhan, Abhishek; Mishra, Shaunak; Agrawal, Lalit; Chakrabarty, Debasis; Nautiyal, Chandra Shekhar

doi:10.1038/s41598-019-48309-8

Cited by 102 publications

(50 citation statements)

References 54 publications

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“… Area of the total agricultural land in different continents that has sodic and saline soil (in millions of hectares of land) ( FAO, 2019 ; Chauhan et al, 2019 ). …”

Section: Introductionmentioning

confidence: 99%

Plant Growth-Promoting Bacteria: Biological Tools for the Mitigation of Salinity Stress in Plants

et al. 2020

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Salinity stress is one of the major abiotic stresses threatening sustainable crop production worldwide. The extent of salinity affected area is expected to cover about 50% of total agricultural land by 2050. Salinity stress produces various detrimental effects on plants’ physiological, biochemical, and molecular features and reduces productivity. The poor plant growth under salinity stress is due to reduced nutrient mobilization, hormonal imbalance, and formation of reactive oxygen species (ROS), ionic toxicity, and osmotic stress. Additionally, salinity also modulates physicochemical properties and reduces the microbial diversity of soil and thus decreases soil health. On the other hand, the demand for crop production is expected to increase in coming decades owing to the increasing global population. Conventional agricultural practices and improved salt-tolerant crop varieties will not be sufficient to achieve the yields desired in the near future. Plants harbor diverse microbes in their rhizosphere, and these have the potential to cope with the salinity stress. These salinity-tolerant plant growth-promoting bacteria (PGPB) assist the plants in withstanding saline conditions. These plant-associated microbes produce different compounds such as 1-aminocyclopropane-1-carboxylate (ACC) deaminase, indole-3-acetic acid (IAA), antioxidants, extracellular polymeric substance (EPS), and volatile organic compounds (VOC). Additionally, the naturally associated microbiome of plants has the potential to protect the host through stress avoidance, tolerance, and resistance strategies. Recent developments in microbiome research have shown ways in which novel microbe-assisted technologies can enhance plant salt tolerance and enable higher crop production under saline conditions. This focused review article presents the global scenario of salinity stress and discusses research highlights regarding PGPB and the microbiome as a biological tool for mitigation of salinity stress in plants.

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“… Area of the total agricultural land in different continents that has sodic and saline soil (in millions of hectares of land) ( FAO, 2019 ; Chauhan et al, 2019 ). …”

Section: Introductionmentioning

confidence: 99%

Plant Growth-Promoting Bacteria: Biological Tools for the Mitigation of Salinity Stress in Plants

et al. 2020

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“…Further, PGPR have also been reportedly used as biofertilizers, due to their ability to enhance crop yields and soil fertility through the nutrient cycle between the plant roots, soil and microbes [ 12 , 13 , 14 , 15 ]. Modulations of multiple gene expression and changes in plant physio-chemical, cellular and molecular pathways were also due to complex interactions between plants and PGPR [ 6 , 16 , 17 , 18 ]. MicroRNAs (miRNAs), which are 20- to 24-nt non-coding small RNAs, regulate the expression of their target genes either by the cleavage or translational repression of target genes [ 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

High-Throughput Sequencing and Expression Analysis Suggest the Involvement of Pseudomonas putida RA-Responsive microRNAs in Growth and Development of Arabidopsis

Jatan

Chauhan

Lata

2020

IJMS

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Beneficial soil microorganisms largely comprise of plant growth-promoting rhizobacteria (PGPR), which adhere to plant roots and facilitate their growth and development. Pseudomonas putida (RA) strain MTCC5279 is one such PGPR that exhibits several characteristics of plant growth promotion, such as P-solubilization, and siderophores and IAA production. Plant–PGPR interactions are very complex phenomena, and essentially modulate the expression of numerous genes, consequently leading to changes in the physiological, biochemical, cellular and molecular responses of plants. Therefore, in order to understand the molecular bases of plant–PGPR interactions, we carried out the identification of microRNAs from the roots of Arabidopsis upon P. putida RA-inoculation, and analyses of their expression. MicroRNAs (miRNAs) are 20- to 24-nt non-coding small RNAs known to regulate the expression of their target genes. Small RNA sequencing led to the identification of 293 known and 67 putative novel miRNAs, from the control and RA-inoculated libraries. Among these, 15 known miRNAs showed differential expression upon RA-inoculation in comparison to the control, and their expressions were corroborated by stem-loop quantitative real-time PCR. Overall, 28,746 and 6931 mRNAs were expected to be the targets of the known and putative novel miRNAs, respectively, which take part in numerous biological, cellular and molecular processes. An inverse correlation between the expression of RA-responsive miRNAs and their target genes also strengthened the crucial role of RA in developmental regulation. Our results offer insights into the understanding of the RA-mediated modulation of miRNAs and their targets in Arabidopsis, and pave the way for the further exploitation and characterization of candidate RA-responsive miRNA(s) for various crop improvement strategies directed towards plant sustainable growth and development.

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“…A transcriptome of rice plants inoculated with Bacillus amyloliquefaciens SN13 showed that the bacterial inoculation alters gene expression under salt stress. For example, genes of phytohormones, flavonoids, or photosynthesis are found in higher number in inoculated plants [104]. Other example is the inoculation of wheat with Dietzia natrolimnaea that causes an overexpression of genes involved in the ABA signaling cascade and in the salt sensitive pathway among others [105].…”

Section: Molecular Mechanisms In the Bacteria-plant Interactions Undementioning

confidence: 99%

Helping Legumes under Stress Situations: Inoculation with Beneficial Microorganisms

Navarro‐Torre¹,

Bessadok²,

Flores-Duarte³

et al. 2020

Legume Crops [Working Title]

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In the upcoming years, legume crops will be subjected to multiple, diverse, and overlapping environmental stressors (raise in global temperatures and CO 2 , drought, salinity, and soil pollution). These factors will menace legume productivity and food quality and security. In this context, tolerant plant growth promoting rhizobacteria (PGPR) are useful biotechnological tools to assist legume establishment and growth. In this chapter, tolerant PGPR able to promote legume growth will be revised. Besides, in the era of-omics, the mechanisms underlying this interaction are being deciphered, particularly transcriptomic, proteomic, and metabolomic changes modulated by PGPR, as well as the molecular dialog legume-rhizobacteria.

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Transcriptional alterations reveal Bacillus amyloliquefaciens-rice cooperation under salt stress

Cited by 102 publications

References 54 publications

Plant Growth-Promoting Bacteria: Biological Tools for the Mitigation of Salinity Stress in Plants

Plant Growth-Promoting Bacteria: Biological Tools for the Mitigation of Salinity Stress in Plants

High-Throughput Sequencing and Expression Analysis Suggest the Involvement of Pseudomonas putida RA-Responsive microRNAs in Growth and Development of Arabidopsis

Helping Legumes under Stress Situations: Inoculation with Beneficial Microorganisms

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