Selection of Hyper Exopolysaccharide Producing and Cyst Forming Azotobacter Isolates for Better Survival under Stress Conditions

Sivapriya, S.L.; Priya, Pasupuleti Reddy

doi:10.20546/ijcmas.2017.606.274

Cited by 10 publications

(5 citation statements)

References 22 publications

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“…Figure ( 1) showed that the salt tolerance of strain A was higher than strains B and C, while strain A can still grow under salt concentration up to 1.28 g / L. and booth strains B and C cannot grow under salt concentration more than 0.32 g / L. These results are in conformity with the findings of Sivapriya et al (2017). They reported that some strains of Azotobacter are able to grow at NaCl concentrations as high as 4 % and others cannot grow, when NaCl concentration is above 6%.…”

Section: Selection the Most Salt Adaptive Tolerance Azotobacter Isolatessupporting

confidence: 86%

Evaluation of some biological and organic soil amendments in improving growth of wheat plant under irrigation with saline water

Latif

Abo-Baker

Farrag

2023

SVU-International Journal of Agricultural Sciences

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The present Preliminary experiments were conducted to examine the efficiency of different rates of some bio stimulate substances and local salinity adapted bacterial inoculants to facilitate wheat growth. Different doses of each biostimulate substances (s) were tested. Humic acid rates (0, 2, 3, 4 and 5 kg humic acid /fed), biofertilization treatment (most salinity adapted Azotobacter local isolates) and yeast extract soil treatment (0, 1, 2, 3 and 4 g / L) were examined for their effects on wheat plants growth. This experiment was conducted in the green house of agricultural experimental farm of department of soils and water, faculty of agricultural, south valley university-Qena governorate, Egypt. The growth parameters data showed that application of humic acid rates (4 and 5 kg humic acid/fed), biofertilization treatment (most salinity adapted Azotobacter local isolate A), yeast extract soil treatment (3 and 4 g / L) produced the highest significant parameters of the wheat plants; for the fresh and dry weight of shoot and root system. Increasing humic acid levels from 4 and 5 kg humic acid/fed did not recorded significant increases in all studied parameters. Also, increasing yeast extract levels as a soil treatment from (3 and 4 g / L) did not recorded significant increases in all studied parameters. The obtained results were clearly showed the promotion effects on growth parameters of wheat plants and the most efficient doses were selected for later use in the assessment experiment productivity of wheat plants.

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Section: Selection the Most Salt Adaptive Tolerance Azotobacter Isolatessupporting

confidence: 86%

Evaluation of some biological and organic soil amendments in improving growth of wheat plant under irrigation with saline water

Latif

Abo-Baker

Farrag

2023

SVU-International Journal of Agricultural Sciences

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“…9 Metal biosorption: biosorbents used in metal clean up Extracellular polymeric substances (EPSs) are a complex mixture of macro-molecular electrolytes excreted by bacteria that play critical roles in the adsorption of heavy metals. 255 For example, Azotobacter, 256 Bacillus, 257 Achromobacter 258 and Pseudomonas 259 have been found to secrete EPS, which allows them to: (i) survive even in the presence of stressor molecules, like heavy metals 260 and pesticides 261 by masking their toxic impact 262,263 and (ii) form complexes with stressor molecules (chelation/sequestration). While doing these functions, the EPS positive strains serve as an important detoxifying agent.…”

Section: Bioremediation Of Heavy Metal Toxicity: a General Perspectivementioning

confidence: 99%

Heavy metal induced stress on wheat: phytotoxicity and microbiological management

et al. 2020

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“…The cyst coat components are synthesized when sufficient quantities of Ca ions are present in soil (Neeru Narula et al, 1998). Such cyst formation and polysaccharide production might have aided the bacterium to survive in the soil at moisture stress besides favouring soil aggregate formation which improves infiltration rate and fertility of soil (Sivapriya and Pasupuleti Reddy Priya 2017).…”

Section: Resultsmentioning

confidence: 99%

Microbial Profile of a Calcareous Soil of South Tamil Nadu, India

Maheshwari¹,

Raj²

2020

Int.J.Curr.Microbiol.App.Sci

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and Villupuram districts of Tamil Nadu. Agriculture is mainly depends upon the North East Rainfall in southern Tamil Nadu. The farmers were mainly cultivated Sorghum, maize, cotton, ragi and rice in Tamil Nadu. So the microbial community study is important for knowing the soil aggregation and fertility soil in this location. In general, the carbonate content is more in calcareous soil, which is not suitable for uptake of major and minor nutrients in the soil.Soil and microflora are inseparable, interrelated and interdependent as the soil is the abode for the microbes which are responsible for the productivity and fertility. Black cotton soil is subjected to dry and hot weather during summer, leading to decline in moisture and desiccation. The mean annual rainfall at Aruppukottai where the study was conducted is about 700-1000 mm out of

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Selection of Hyper Exopolysaccharide Producing and Cyst Forming Azotobacter Isolates for Better Survival under Stress Conditions

Cited by 10 publications

References 22 publications

Evaluation of some biological and organic soil amendments in improving growth of wheat plant under irrigation with saline water

Evaluation of some biological and organic soil amendments in improving growth of wheat plant under irrigation with saline water

Heavy metal induced stress on wheat: phytotoxicity and microbiological management

Microbial Profile of a Calcareous Soil of South Tamil Nadu, India

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