Soil Salinity and Its Alleviation Using Plant Growth–Promoting Fungi

Chandra, Prem; Enespa,; Singh, Ramandeep

doi:10.1007/978-3-030-48474-3_4

Cited by 4 publications

(3 citation statements)

References 395 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The plant growth-promoting fungi (PGPFs) can influence germination, seedling vigor, shoot growth, root growth, photosynthetic efficiency, flowering, and yield (López-Bucio et al, 2015;Hossain and Sultana, 2020b). Moreover, previous studies have revealed that PGPFs also improve systemic tolerance of abiotic stress in various crop plants (Khan et al, 2011;Zhang et al, 2016;Chandra and Singh, 2020). PGPFs include species of the genera Aspergillus, Fusarium, Trichoderma, Penicillium, Piriformospora, Phoma, and Rhizoctonia (Hossain et al, 2007Shoresh et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…PGPFs include species of the genera Aspergillus , Fusarium , Trichoderma , Penicillium , Piriformospora , Phoma , and Rhizoctonia ( Hossain et al, 2007 , 2014 , 2017 ; Shoresh et al, 2010 ). Aspergillus , Fusarium , Penicillium , Piriformospora , Phoma , and Trichoderma are specifically involved in abiotic stress tolerance ( Chandra and Singh, 2020 ). The specific selection of halotolerant fungi that promote salt tolerance and plant growth could thus significantly enhance plant productivity either under normal or salt stress conditions, representing a promising approach for increasing nutrient bioavailability and helping advance saline soil-based agriculture.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A novel PGPF Penicillium olsonii isolated from the rhizosphere of Aeluropus littoralis promotes plant growth, enhances salt stress tolerance, and reduces chemical fertilizers inputs in hydroponic system

et al. 2022

View full text Add to dashboard Cite

The hydroponic farming significantly enhances the yield and enables multiple cropping per year. These advantages can be improved by using plant growth-promoting fungi (PGPF) either under normal or stress conditions. In this study, the fungal strain (A3) isolated from the rhizosphere of the halophyte plant Aeluropus littoralis was identified as Penicillium olsonii based on sequence homology of its ITS region. The A3 fungus was shown to be halotolerant (up to 1 M NaCl) and its optimal growth was at 27°C, but inhibited at 40°C. In liquid culture medium, the A3 produced indole acetic acid (IAA) especially in the presence of L-tryptophan. Tobacco plants grown under hydroponic farming system were used to evaluate the promoting activity of the direct effect of A3 mycelium (DE) and the indirect effect (IDE) of its cell-free culture filtrate (A3CFF). The results showed that for the two conditions (DE or IDE) the tobacco seedlings exhibited significant increase in their height, leaf area, dry weight, and total chlorophyll content. Interestingly, the A3CFF (added to the MS liquid medium or to nutrient solution (NS), prepared from commercial fertilizers) induced significantly the growth parameters, the proline concentration, the catalase (CAT) and the superoxide dismutase (SOD) activities of tobacco plants. The A3CFF maintained its activity even after extended storage at 4°C for 1 year. Since the A3 is a halotolerant fungus, we tested its ability to alleviate salt stress effects. Indeed, when added at 1:50 dilution factor to NS in the presence of 250 mM NaCl, the A3CFF enhanced the plant salt tolerance by increasing the levels of total chlorophyll, proline, CAT, and SOD activities. In addition, the treated plants accumulated less Na+ in their roots but more K+ in their leaves. The A3CFF was also found to induce the expression of five salt stress related genes (NtSOS1, NtNHX1, NtHKT1, NtSOD, and NtCAT1). Finally, we proved that the A3CFF can reduce by half the chemical fertilizers inputs. Indeed, the tobacco plants grown in a hydroponic system using 0.5xNS supplemented with A3CFF (1:50) exhibited significantly higher growth than those grown in 0.5xNS or 1xNS. In an attempt to explain this mechanism, the expression profile of some growth related genes (nitrogen metabolism (NR1, NRT1), auxin (TRYP1, YUCCA6-like), and brassinosteroid (DET2, DWF4) biosynthesis) was performed. The results showed that all these genes were up-regulated following plant treatment with A3CFF. In summary the results revealed that the halotolerant fungus P. olsonii can stimulates tobacco plant growth, enhances its salt tolerance, and reduces by half the required chemical fertilizer inputs in a hydroponic farming system.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel PGPF Penicillium olsonii isolated from the rhizosphere of Aeluropus littoralis promotes plant growth, enhances salt stress tolerance, and reduces chemical fertilizers inputs in hydroponic system

et al. 2022

View full text Add to dashboard Cite

show abstract

“…play a fundamental role for the plant, also promoting the plant growth; these microorganisms are known as plant growth promoter microorganisms (PGPMs) [12]. Nowadays, different bacteria species and strains capable of improving the well-being and growth of plants in the most varied harsh and stressful conditions have been identified [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Effects of Compost Amendment on Glycophyte and Halophyte Crops Grown on Saline Soils: Isolation and Characterization of Rhizobacteria with Plant Growth Promoting Features and High Salt Resistance

et al. 2021

View full text Add to dashboard Cite

Soil salinization and desertification due to climate change are the most relevant challenges for the agriculture of the 21st century. Soil compost amendment and plant growth promoting rhizobacteria (PGP-R) are valuable tools to mitigate salinization and desertification impacts on agricultural soils. Selection of novel halo/thermo-tolerant bacteria from the rhizosphere of glicophytes and halophytes, grown on soil compost amended and watered with 150/300 mM NaCl, was the main objective of our study. Beneficial effects on the biomass, well-being and resilience, exerted on the assayed crops (maize, tomato, sunflower and quinoa), were clearly observable when soils were amended with 20% compost despite the very high soil electric conductivity (EC). Soil compost amendment not only was able to increase crop growth and biomass, but also their resilience to the stress caused by very high soil EC (up to 20 dS m−1). Moreover, compost amendment has proved itself a valuable source of highly halo- (4.0 M NaCl)/thermo tolerant rhizobacteria (55 °C), showing typical PGP features. Among the 13 rhizobacterial isolates, molecularly and biochemically characterized, two bacterial strains showed several biochemical PGP features. The use of compost is growing all around the world reducing considerably for farmers soil fertilization costs. In fact, only in Italy its utilization has ensured, in the last years, a saving of 650 million euro for the farmers, without taking into account the environment and human health benefits. Furthermore, the isolation of halo/thermo-tolerant PGPR strains and their use will allow the recovery and cultivation of hundreds of thousands of hectares of saline and arid soils now unproductive, making agriculture more respectful of agro-ecosystems also in view of upcoming climate change.

show abstract

White-Rot Fungi for Bioremediation of Polychlorinated Biphenyl Contaminated Soil

2021

View full text Add to dashboard Cite

Soil Salinity and Its Alleviation Using Plant Growth–Promoting Fungi

Cited by 4 publications

References 395 publications

A novel PGPF Penicillium olsonii isolated from the rhizosphere of Aeluropus littoralis promotes plant growth, enhances salt stress tolerance, and reduces chemical fertilizers inputs in hydroponic system

A novel PGPF Penicillium olsonii isolated from the rhizosphere of Aeluropus littoralis promotes plant growth, enhances salt stress tolerance, and reduces chemical fertilizers inputs in hydroponic system

Effects of Compost Amendment on Glycophyte and Halophyte Crops Grown on Saline Soils: Isolation and Characterization of Rhizobacteria with Plant Growth Promoting Features and High Salt Resistance

White-Rot Fungi for Bioremediation of Polychlorinated Biphenyl Contaminated Soil

Contact Info

Product

Resources

About