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Authors = Shobhit Raj Vimal

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7 pages, 412 KiB  
Article
Influence of Pseudomonas spp. on Okra (Abelomuscus esculantaus L.) Growth Parameters and Antioxidant Activities under Soil Salinity
by Shobhit Raj Vimal, Ashish Kumar Singh and Jay Shankar Singh
Microbiol. Res. 2020, 11(1), 8443; https://doi.org/10.4081/mr.2020.8443 - 5 Aug 2020
Cited by 2 | Viewed by 1216
Abstract
In this study total twenty seven gram negative NaCl tolerant rhizobacterial strains were isolated from disturbed soils of Lucknow districts. The 3 selected sampling sites were Bijnor, Pasi Quila and Babasaheb Bhimrao Ambedkar University Campus, Lucknow, India. The isolates have been investigated for [...] Read more.
In this study total twenty seven gram negative NaCl tolerant rhizobacterial strains were isolated from disturbed soils of Lucknow districts. The 3 selected sampling sites were Bijnor, Pasi Quila and Babasaheb Bhimrao Ambedkar University Campus, Lucknow, India. The isolates have been investigated for different plant growth promoting and biochemical activities. Based on morphological and biochemical tests the total eight (8) rhizobacterial strains were designated as Pseudomonas spp. Among PGP traits, all 8 Pseudomonas strains were examined for Indole-3-Acetic Acid (IAA) production activity. The bacterialisolate IAA4 produces maximum 21.16 ± 3.24 μg mL–1 of IAA at 100 μg mL−1 tryptophan concentration among Pseudomonas strains. This strain show excellent P solubilization and N fixatation in qualitative assay. The higher amount of NaCl salt in soils positively reduces paddy plant physiology and growth parameters. The IAA4 inoculation in okra seeds significantly (p < 0.001) improved plant growth parameters, green pigments and modulate antioxidant activities under pot experimental study. Full article
7 pages, 825 KiB  
Article
Effect of Salt Tolerant Bacillus sp. and Pseudomonas sp. on wheat (Triticum aestivum L.) Growth under Soil Salinity: A Comparative Study
by Shobhit Raj Vimal, Jaya Gupta and Jay Shankar Singh
Microbiol. Res. 2018, 9(1), 7462; https://doi.org/10.4081/mr.2018.7462 - 22 Jun 2018
Cited by 16 | Viewed by 1449
Abstract
This study was conducted to examine the comparative effect on wheat plant health inoculated with the two different rhizobacterial strains Bacillus sp. (JG3) and Pseudomonas sp. (JG7) under soil salinity. Total seven potential salt tolerant strains were isolated from the saline soils of [...] Read more.
This study was conducted to examine the comparative effect on wheat plant health inoculated with the two different rhizobacterial strains Bacillus sp. (JG3) and Pseudomonas sp. (JG7) under soil salinity. Total seven potential salt tolerant strains were isolated from the saline soils of BBAU-Lucknow. The bacterial strains have been investigated for nitrogen fixation, phosphate solubilization, ammonia, indole acetic acid and hydrogen cyanide production activities. Based on morphological and biochemical activities the strains JG3 was designated as Bacillus sp. and the strain JG7 was designated as Pseudomonas sp. Both the strains witness positive for the different plant growth promoting traits. In comparison of strain JG7, strain JG3 inoculated wheat seeds enhance plant height by 32.32%, root length by 37.84%, fresh weight by 28.2% and dry weight by 15.51% in FYM amended soils. We observe in this study that seeds treated with Bacillus sp. found significantly effective in plant growth promotion compared to Pseudomonas sp. in saline soil. Based on the comparative experimental study reported herein, it is pointedly observed that the use of salt tolerant PGPRs are effective for facilitating plant health in salt stress environments. Full article
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