Azotobacter as Biofertilizer for Sustainable Soil and Plant Health Under Saline Environmental Conditions

Dar, Showket A; Bhat, Rouf Ahmad; Dervash, Moonisa Aslam; Dar, Z. Ahmad; Dar, Gowhar Hamid

doi:10.1007/978-3-030-48771-3_14

Cited by 12 publications

(11 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The application of BF signi cantly increased the germination (86.11% ), seedling length, seedling girth, and biomass of Emblica o cinalis (Veerappa Hongal et al 2018). BF has a positive impact on seeds they improved the roots proliferation and chances of crop establishment in stress conditions (Dar et al 2021). Nanosilicab have the dual properties and may enhance the germination of seeds by modulating hormonal changes and increasing the enzymatic activities involved in the metabolic processes during germination.…”

Section: Discussionmentioning

confidence: 99%

Role of nanosilicab to boost the activities of metabolites in Triticum aestivum facing drought stress

Akhtar

Ilyas

2022

Plant Soil

View full text Add to dashboard Cite

Drought stress is a threat to agriculture which is decreasing the yield of crops and creating a considerable loss. This research focused on the part played by silicon dioxide nanoparticles (SiO 2 NPs), biofertilizers, and nanosilicab on Triticum aestivum under control and drought stress. Nanosilicab enhanced the germination percentage, germination index, and germination vigor index by 23.07%, 14.49% and, 93.10% under control and 14.42%, 10.52%, and 46.15% under drought. In the pot experiment, the soil was treated with 150 mg/kg SiO 2 NPs, 1% biofertilizer and, 1% nanosilicab before sowing. Nanosilicab increased shoot length and root length by 9.39%, 10.76%, 22.41%, 18.76%, 30.58%, and, 21.56% under control and drought stress conditions. It also increased photosynthetic pigments, osmolytes content, relative water content, membrane stability index, phenol, and avonoid content. The increase in antioxidant activity was signi cantly high by the application of nanosilicab i.e. the augmentation in catalase, peroxidase, and superoxide dismutase was 68.65%, 83.69% and, 85.99% respectively. It also increased the indole acetic acid and cytokinin to 22.28% and 14.79% in comparison to control. The improvement in hundred grain weight and grains per spike by the use of nanosilicab was 36.25%, 38.76%, 27.47%, and 22.59% as compared to control. The positive interaction of nanosilicab with the roots of plants in the rhizosphere improved the growth of plants signi cantly and a potential candidate for application on crops. The novelty of this study lies in the formulation of nanosilicab and its role in drought amelioration.

show abstract

Section: Discussionmentioning

confidence: 99%

Role of nanosilicab to boost the activities of metabolites in Triticum aestivum facing drought stress

Akhtar

Ilyas

2022

Plant Soil

View full text Add to dashboard Cite

show abstract

“…Azotobacter has the ability to fix atmospheric nitrogen and produce phytohormones, making it the most effective and widespread type of Plant Growth-Promoting Bacteria (PGPB) (Aasfar et al, 2021;Nongthombam et al, 2021). Azotobacter also produces chemicals that alter plant growth and morphology (Dar et al, 2021;El-Beltagi et al, 2022). PGPRs enhance soluble sugar, protein, proline content leading to a higher water potential gradient and improving water uptake and plant growth under stress condition.…”

Section: Introductionmentioning

confidence: 99%

Photosynthesis and chlorophyll fluorescence of Iranian licorice (Glycyrrhiza glabra l.) accessions under salinity stress

2022

View full text Add to dashboard Cite

While salinity is increasingly becoming a prominent concern in arable farms around the globe, various treatments can be used for the mitigation of salt stress. Here, the effective presence of Azotobacter sp. inoculation (A1) and absence of inoculation (A0) was evaluated on Iranian licorice plants under NaCl stress (0 and 200 mM) (S0 and S1, respectively). In this regard, 16 Iranian licorice (Glycyrrhiza glabra L.) accessions were evaluated for the effects on photosynthesis and chlorophyll fluorescence. Leaf samples were measured for photosynthetic pigments (via a spectrophotometer), stomatal and trichome-related features (via SEM), along with several other morphological and biochemical features. The results revealed an increase in the amount of carotenoids that was caused by bacterial inoculation, which was 28.3% higher than the non-inoculated treatment. Maximum initial fluorescence intensity (F0) (86.7) was observed in the ‘Bardsir’ accession. Meanwhile, the highest variable fluorescence (Fv), maximal fluorescence intensity (Fm), and maximum quantum yield (Fv/Fm) (0.3, 0.4, and 0.8, respectively) were observed in the ‘Eghlid’ accession. Regarding anatomical observations of the leaf structure, salinity reduced stomatal density but increased trichome density. Under the effect of bacterial inoculation, salinity stress was mitigated. With the effect of bacterial inoculation under salinity stress, stomatal length and width increased, compared to the condition of no bacterial inoculation. Minimum malondialdehyde content was observed in ‘Mahabad’ accession (17.8 μmol/g FW). Principle component analysis (PCA) showed that ‘Kashmar’, ‘Sepidan’, ‘Bajgah’, ‘Kermanshah’, and ‘Taft’ accessions were categorized in the same group while being characterized by better performance in the aerial parts of plants. Taken together, the present results generally indicated that selecting the best genotypes, along with exogenous applications of Azotobacter, can improve the outcomes of licorice cultivation for industrial purposes under harsh environments.

show abstract

Section: Discussionmentioning

confidence: 99%

Role of nanosilicab to boost the activities of metabolites in Triticum aestivum facing drought stress

Akhtar¹,

Ilyas²

2021

Preprint

View full text Add to dashboard Cite

Drought stress is a threat to agriculture which is decreasing the yield of crops and creating a considerable loss. This research focused on the part played by silicon dioxide nanoparticles (SiO2 NPs), biofertilizers, and nanosilicab on Triticum aestivum under control and drought stress. Nanosilicab enhanced the germination percentage, germination index, and germination vigor index by 23.07%, 14.49% and, 93.10% under control and 14.42%, 10.52%, and 46.15% under drought. In the pot experiment, the soil was treated with 150 mg/kg SiO2 NPs, 1% biofertilizer and, 1% nanosilicab before sowing. Nanosilicab increased shoot length and root length by 9.39%, 10.76%, 22.41%, 18.76%, 30.58%, and, 21.56% under control and drought stress conditions. It also increased photosynthetic pigments, osmolytes content, relative water content, membrane stability index, phenol, and flavonoid content. The increase in antioxidant activity was significantly high by the application of nanosilicab i.e. the augmentation in catalase, peroxidase, and superoxide dismutase was 68.65%, 83.69% and, 85.99% respectively. It also increased the indole acetic acid and cytokinin to 22.28% and 14.79% in comparison to control. The improvement in hundred grain weight and grains per spike by the use of nanosilicab was 36.25%, 38.76%, 27.47%, and 22.59% as compared to control. The positive interaction of nanosilicab with the roots of plants in the rhizosphere improved the growth of plants significantly and a potential candidate for application on crops. The novelty of this study lies in the formulation of nanosilicab and its role in drought amelioration.

show abstract

Azotobacter as Biofertilizer for Sustainable Soil and Plant Health Under Saline Environmental Conditions

Cited by 12 publications

References 26 publications

Role of nanosilicab to boost the activities of metabolites in Triticum aestivum facing drought stress

Role of nanosilicab to boost the activities of metabolites in Triticum aestivum facing drought stress

Photosynthesis and chlorophyll fluorescence of Iranian licorice (Glycyrrhiza glabra l.) accessions under salinity stress

Role of nanosilicab to boost the activities of metabolites in Triticum aestivum facing drought stress

Contact Info

Product

Resources

About