Plant growth promoting rhizobacteria alleviate salinity induced negative effects on growth, oil content and physiological status in Mentha arvensis

Bharti, Nidhi; Barnawal, Deepti; Awasthi, Ashutosh; Yadav, Anju; Kalra, Alok

doi:10.1007/s11738-013-1385-8

Cited by 110 publications

(56 citation statements)

References 49 publications

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“…Salt tolerance is generally quantified as the plant biomass production [9]. The significant increases in the total, shoot and root biomass with the PGPR inoculation ( Figure 1) align with previous findings [18,41,42]. The higher effect size of total biomass in SSP than that in STP ( Figure 2a) is consistent with results of crop cultivars with contrasting salt tolerance [17,24,26].…”

Section: Pgpr Responsiveness On Biomass Between Ssp and Stpsupporting

confidence: 87%

The Growth Promotion of Two Salt-Tolerant Plant Groups with PGPR Inoculation: A Meta-Analysis

et al. 2019

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Understanding the primary mechanisms for plant promotion under salt stress with plant growth promoting rhizobacteria (PGPR) inoculation of different salt-tolerant plant groups would be conducive to using PGPR efficiently. We conducted a meta-analysis to evaluate plant growth promotion and uncover its underlying mechanisms in salt-sensitive plants (SSP) and salt-tolerant plants (STP) with PGPR inoculation under salt stress. PGPR inoculation decreased proline, sodium ion (Na+) and malondialdehyde but increased plant biomass, nutrient acquisition (nitrogen, phosphorus, potassium ion (K+), calcium ion (Ca2+), and magnesium ion (Mg2+)), ion homeostasis (K+/Na+ ratio, Ca2+/Na+ ratio, and Mg2+/Na+ ratio), osmolytes accumulation (soluble sugar and soluble protein), antioxidants (superoxide dismutase), and photosynthesis (chlorophyll, carotenoid, and photosynthetic rate) in both SSP and STP. The effect size of total biomass positively correlated with the effect sizes of nutrient acquisition and the homeostasis of K+/Na+, and negatively correlated with the effect size of malondialdehyde in both SSP and STP. The effect size of total biomass also positively correlated with the effect sizes of carotenoid and the homeostasis in Ca2+/Na+ and Mg2+/Na+ and negatively correlated with the effect size of Na+ in SSP, but it only negatively correlated with the effect size of Ca2+ in STP. Our results suggest that the plant growth improvement depends on the nutrient acquisition enhancement in both SSP and STP, while ion homeostasis plays an important role and carotenoid may promote plant growth through protecting photosynthesis, reducing oxidative damage and promoting nutrient acquisition only in SSP after PGPR inoculation under salt stress.

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Section: Pgpr Responsiveness On Biomass Between Ssp and Stpsupporting

confidence: 87%

The Growth Promotion of Two Salt-Tolerant Plant Groups with PGPR Inoculation: A Meta-Analysis

et al. 2019

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“…This indicates that inoculation had a positive impact upon the mineral nutrient balance of S. densiflora plants. According to our results, Bharti et al (2014) showed that the use of salt-tolerant, PGPR improved foliar nutrient uptake in Mentha arvensis. This seems logical if we consider that in general root elongation enhances the capacity of plants to capture ions from both soils, since a large contacting area between the root and soil is necessary to increase absorption of the ions from the soil (Li et al 2007).…”

Section: Discussionmentioning

confidence: 55%

Deciphering the role of plant growth-promoting rhizobacteria in the tolerance of the invasive cordgrass Spartina densiflora to physicochemical properties of salt-marsh soils

et al. 2015

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Background and aims A glasshouse experiment was conceived to assess the role of a bacterial consortium (Pseudomonas composti SDT3, Aeromonasaquariorum SDT 13 and Bacillus sp. SDT14) isolated from the rizhosphere of S. densiflora on its growth and physiological tolerance to the physicochemical properties of marsh soils. Methods Two inoculation treatments (with and without inoculation) in combination with two soil types (from Piedras and Odiel marshes, SW Spain) were assigned for 50 days. Growth parameters, combined with measurements of gas exchange, efficiency of PSII biochemistry, photosynthetic pigments and leaf water content were measured. In addition, the accumulation of nutrients and trace elements were determined. ResultsThe inoculation improved growth of S. densiflora through a beneficial effect on its photochemical apparatus due to its impact on chlorophyll concentration. This enhancement happened under both soil conditions and was mainly reflected in a greater length and diameter of roots. Also, inoculation favoured leaf water content through the decline in stomatal conductance and increment in root-to-shoot ratio. Moreover, this consortium was able to stimulate ion accumulation in roots and leaves. Conclusions Selected rhizospheric bacteria appear to play a significant role in S. densiflora growth response and tolerance to the physicochemical properties of marshes soils.

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“…This strain has been reported to improve yield and bacoside-content in the medicinal plant Bacopa monnieri under salt stress. It also alleviated the negative effects of salinity in Mentha arvensis in a glass house study at salinity levels of 100 and 300 mM NaCl (Bharti et al, 2014). Exiguobacterium acetylicum inhibiting the growth and development of several plant pathogenic fungi and bacterial pathogens of clinical significnce was reported by Azizollahi Aliabadi et al (2014).…”

Section: Exiguobacteriummentioning

confidence: 70%

Novel plant growth promoting rhizobacteria—Prospects and potential

Chauhan¹,

Bagyaraj²,

Selvakumar

et al. 2015

Applied Soil Ecology

202

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Plant growth promoting rhizobacteria alleviate salinity induced negative effects on growth, oil content and physiological status in Mentha arvensis

Cited by 110 publications

References 49 publications

The Growth Promotion of Two Salt-Tolerant Plant Groups with PGPR Inoculation: A Meta-Analysis

The Growth Promotion of Two Salt-Tolerant Plant Groups with PGPR Inoculation: A Meta-Analysis

Deciphering the role of plant growth-promoting rhizobacteria in the tolerance of the invasive cordgrass Spartina densiflora to physicochemical properties of salt-marsh soils

Novel plant growth promoting rhizobacteria—Prospects and potential

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