Seed inoculation with Azospirillum mitigates NaCl effects on lettuce

Barassi, Carlos A.; Ayrault, Gilles; Creus, Cecilia M.; Sueldo, Rolando J.; Sobrero, M. T.

doi:10.1016/j.scienta.2006.02.025

Cited by 211 publications

(97 citation statements)

References 35 publications

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“…Our results are in accordance with these results. Similar results were reported in egg plant [34], beans [35], lettuce [36], squash [37], and tomato [38].…”

Section: Discussionsupporting

confidence: 88%

Influence of Rhizobacterium Inoculation on NaCl Salinity Tolerance in Pusa Sukomal and RC101 Varieties of Cowpea (Vigna unguiculata L.)

Chaturvedi¹,

Gudipati²,

Shrivastav³

2017

Recent Advances in Biology and Medicine

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Soil salinity is one of the most severe factors limiting growth and physiological response in cowpea plants. In the present study, the effect of rhizobacterium strains BR2 and BR3 on the growth of cowpea (Vigna unguiculata L.) varieties-Pusa Sukomal and RC101-tolerance to 0, 25, 50, and 75 mM concentrations of NaCl salinity was evaluated. The rate of growth, in general, was high in plants irrigated with 25 mM NaCl saline water as compared to control, and thereafter, the growth reduced with increase in salinity concentrations. The results revealed that treating the seeds with rhizobacteria accompanied by NaCl salinity increased growth parameters of the cowpea plant as compared to the seeds irrigated with sodium chloride alone. Treatment with rhizobacteria mitigated the harmful effect of NaCl, and the growth was significantly better than the plants growing in saline water without rhizobacterium inoculation. The overall performance of Pusa Sukomal with BR3 strain was found to be better than the other combinations tested. Flowering in field plants started within 45 days of sowing, and the seeds in plants irrigated with saline water, in the presence of rhizobacterium, were found to be healthy as compared to control seeds. Seed protein profile was analyzed by SDS PAGE gel studies.

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“…Our results are in accordance with these results. Similar results were reported in egg plant [34], beans [35], lettuce [36], squash [37], and tomato [38].…”

Section: Discussionsupporting

confidence: 88%

Influence of Rhizobacterium Inoculation on NaCl Salinity Tolerance in Pusa Sukomal and RC101 Varieties of Cowpea (Vigna unguiculata L.)

Chaturvedi¹,

Gudipati²,

Shrivastav³

2017

Recent Advances in Biology and Medicine

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“…Improved stress tolerance and growth-promoting effects of microorganism treatments have been seen in other species also. Inoculation of lettuce (Lactuca sativa L., cv Mantecosa) seeds with A. brasilense increased germination in the presence of salt and demonstrated tolerance through higher total fresh and dry weights of plants at harvest [19]. Additional experiments studying these effects have shown increased biomass, chlorophyll, ascorbic acid content, antioxidant content, and post-harvest shelf life after being subjected to salt stress [20].…”

Section: Key Mechanisms Targeted By Humic and Fulvic Acid Based Biostmentioning

confidence: 99%

The role of biostimulants and bioeffectors as alleviators of abiotic stress in crop plants

Oosten

Pepe

Pascale

et al. 2017

Chem. Biol. Technol. Agric.

650

399

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The use of bioeffectors, formally known as plant biostimulants, has become common practice in agriculture and provides a number of benefits in stimulating growth and protecting against stress. A biostimulant is loosely defined as an organic material and/or microorganism that is applied to enhance nutrient uptake, stimulate growth, enhance stress tolerance or crop quality. This review is intended to provide a broad overview of known effects of biostimulants and their ability to improve tolerance to abiotic stresses. Inoculation or application of extracts from algae or other plants have beneficial effects on growth and stress adaptation. Algal extracts, protein hydrolysates, humic and fulvic acids, and other compounded mixtures have properties beyond basic nutrition, often enhancing growth and stress tolerance. Non-pathogenic bacteria capable of colonizing roots and the rhizosphere also have a number of positive effects. These effects include higher yield, enhanced nutrient uptake and utilization, increased photosynthetic activity, and resistance to both biotic and abiotic stresses. While most biostimulants have numerous and diverse effects on plant growth, this review focuses on the bioprotective effects against abiotic stress. Agricultural biostimulants may contribute to make agriculture more sustainable and resilient and offer an alternative to synthetic protectants which have increasingly falling out of favour with consumers. An extensive review of the literature shows a clear role for a diverse number of biostimulants that have protective effects against abiotic stress but also reveals the urgent need to address the underlying mechanisms responsible for these effects.

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“…The PGPB allow growth of plants upon interaction in the spermosphere and rhizopshere through hormonal and nutritional homeostasis, nutrient solubilization and induce tolerance and resistance under abiotic and biotic stresses 15 . Amelioration of salinity stress in plants by employing PGPB has been described in various crops [16][17][18][19][20][21][22][23] . Under salt stress, PGPB help plants to survive by secreting 1-aminocyclopropane-1-carboxylate deaminase (ACC-D) that decreases the level of plant stress hormone C 2 H 4 .…”

mentioning

confidence: 99%

Amelioration of Soybean Plant from Saline-Induced Condition by Exopolysaccharide Producing <i>Pseudomonas</i>-Mediated Expression of High Affinity K<sup>+</sup>-transporter (HKT1) Gene

et al. 2016

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There is a consensus that soil salinization causes decreased agricultural production. Several plants may adapt to survive under high salt stress wherein glycophytes fail to grow. Among transporters in plants, the sodium transporter, also known as high-affinity K + -transporter (HKT1) that comes under the HKT gene family, is involved in uptake of sodium through the roots and its recirculation from shoot to root. In the present study, we have examined the role of transporter HKT1 in soybean plants upon addition of 200 mM NaCl and treatment with Pseudomonas sp. strain AK-1. It is reported that HKT1 is permeable to K + /Na + and systemically alleviates salinity stress through upregulation of gene expression in shoots and down-regulation in roots. Higher transcription levels in shoot recirculate Na + from shoot xylem to root phloem whereas lower transcription levels in root do not allow sodium to enter the plants through root cells. We have also examined role of exopolysaccharide (EPS) produced by strain AK-1 which helps in the binding of free Na + from soil and thus makes Na + unavailable to the soybean plants. Strain with EPS showed decrease in electrical conductivity of soil from 1.1 to 0.9 dS/m in the presence of 200 mM NaCl. In conclusion, treatment with Pseudomonas sp. strain AK-1 exhibits significant rise in shoot/root length, number of lateral roots, shoot/root fresh weight and decreased Na + /K + ratio under salinity stress.

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Seed inoculation with Azospirillum mitigates NaCl effects on lettuce

Cited by 211 publications

References 35 publications

Influence of Rhizobacterium Inoculation on NaCl Salinity Tolerance in Pusa Sukomal and RC101 Varieties of Cowpea (Vigna unguiculata L.)

Influence of Rhizobacterium Inoculation on NaCl Salinity Tolerance in Pusa Sukomal and RC101 Varieties of Cowpea (Vigna unguiculata L.)

The role of biostimulants and bioeffectors as alleviators of abiotic stress in crop plants

Amelioration of Soybean Plant from Saline-Induced Condition by Exopolysaccharide Producing <i>Pseudomonas</i>-Mediated Expression of High Affinity K<sup>+</sup>-transporter (HKT1) Gene

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