Siderophore production in groundnut rhizosphere isolate, Achromobacter sp. RZS2 influenced by physicochemical factors and metal ions

Sayyed, R. Z.; Seifi, Sonia; Patel, P. R.; Shaikh, S. S.; Jadhav, H. P.; Enshasy, Hesham El

doi:10.1007/s42398-019-00070-4

Cited by 55 publications

(45 citation statements)

References 27 publications

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“…Agricultural soil is a rich source of a diverse population of PGPR [ 6 , 9 ]. These PGPR provide several benefits to the plants such as plant growth promotion, the enrichment of plant nutrients, as well the enrichment of the nutrients in soil [ 1 ].…”

Section: Discussionmentioning

confidence: 99%

“…Sayyed et al, reported siderophore production in Achromobacter sp. isolated from d rhizosphere [ 9 ]. Shaikh et al observed siderophore production in Pseudomonas sp.…”

Section: Discussionmentioning

confidence: 99%

“…PGPR also excrete exopolysaccharides (EPS) which help in salinity amelioration [ 8 ]. Applications of plant growth-promoting rhizobacteria (PGPR) are known as effective, and sustainable inputs for the replenishment of soil nutrients, plant nutrients, and plant health [ 9 ]. Various reports claim that the application of PGPR for sustainable improvements in nutrients and the health of soil and plants [ 4 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Applications of plant growth-promoting rhizobacteria (PGPR) are known as effective, and sustainable inputs for the replenishment of soil nutrients, plant nutrients, and plant health [ 9 ]. Various reports claim that the application of PGPR for sustainable improvements in nutrients and the health of soil and plants [ 4 , 9 , 10 , 11 ]. PGPR are known to produce a wide variety of plant growth-promoting traits that include siderophores [ 10 , 11 ], phytohormones [ 12 , 13 ], hydrolytic enzymes [ 14 ], exopolysaccharide [ 15 , 16 , 17 ], stress-tolerant metabolites [ 18 , 19 , 20 , 21 ], and phosphate solubilization [ 22 , 23 ], etc.…”

Section: Introductionmentioning

confidence: 99%

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Production of Plant Beneficial and Antioxidants Metabolites by Klebsiellavariicola under Salinity Stress

et al. 2021

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Bacteria that surround plant roots and exert beneficial effects on plant growth are known as plant growth-promoting rhizobacteria (PGPR). In addition to the plant growth-promotion, PGPR also imparts resistance against salinity and oxidative stress and needs to be studied. Such PGPR can function as dynamic bioinoculants under salinity conditions. The present study reports the isolation of phytase positive multifarious Klebsiella variicola SURYA6 isolated from wheat rhizosphere in Kolhapur, India. The isolate produced various plant growth-promoting (PGP), salinity ameliorating, and antioxidant traits. It produced organic acid, yielded a higher phosphorous solubilization index (9.3), maximum phytase activity (376.67 ± 2.77 U/mL), and copious amounts of siderophore (79.0%). The isolate also produced salt ameliorating traits such as indole acetic acid (78.45 ± 1.9 µg/mL), 1 aminocyclopropane-1-carboxylate deaminase (0.991 M/mg/h), and exopolysaccharides (32.2 ± 1.2 g/L). In addition to these, the isolate also produced higher activities of antioxidant enzymes like superoxide dismutase (13.86 IU/mg protein), catalase (0.053 IU/mg protein), and glutathione oxidase (22.12 µg/mg protein) at various salt levels. The isolate exhibited optimum growth and maximum secretion of these metabolites during the log-phase growth. It exhibited sensitivity to a wide range of antibiotics and did not produce hemolysis on blood agar, indicative of its non-pathogenic nature. The potential of K. variicola to produce copious amounts of various PGP, salt ameliorating, and antioxidant metabolites make it a potential bioinoculant for salinity stress management.

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Section: Discussionmentioning

confidence: 99%

“…Sayyed et al, reported siderophore production in Achromobacter sp. isolated from d rhizosphere [ 9 ]. Shaikh et al observed siderophore production in Pseudomonas sp.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Production of Plant Beneficial and Antioxidants Metabolites by Klebsiellavariicola under Salinity Stress

et al. 2021

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“…All the tested PGPR tested in this study showed promising siderophore production (17.1-27.7%) which proofs rhizobacterial ability to suppress the growth of target pathogen P. myriotylum. Many previous reports have supported siderophore production potential of PGPR and their role in disease suppression (Ali et al, 2020;Compant et al, 2005;Sayyed et al, 2019;Swadling and Jeffries, 1996).…”

Section: Discussionmentioning

confidence: 83%

Biological control of chili damping off disease, caused byPythium myriotylum

Hyder

Gondal

Rizvi³

et al. 2020

Preprint

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Pythium myriotylum is a notorious soil-borne oomycete causes post-emergence damping off in chilli pepper. Of various disease management strategies, utilization of plant growth promoting rhizobacteria (PGPR) in disease suppression and plant growth promotion is eye catching strategy. The present study was performed to isolate and characterize PGPR indigenous to chili rhizosphere in Pakistan, and to test their potential to suppress damping off and plant growth promotion in chilli. Out of total 28 antagonists, 8 bacterial isolates (4a2, JHL-8, JHL-12, 1C2, RH-24, 1D, 5C and RH-87) significantly suppressed the colony growth of P. myriotylum in dual culture experiment. All the tested bacterial isolates were characterized for biochemical attributes, and 16S rRNA sequence based phylogenetic analysis identified these isolates as Flavobacterium spp., Bacillus megaterium, Pseudomonas putida, Bacillus cereus and Pseudomonas libanensis. All the tested bacterial isolates showed positive test results for ammonia production, starch hydrolase (except 4a2), and hydrogen cyanide production (except 4a2 and 1D). All the tested antagonists produced indole-3-acetic acid (13.4-39.0 μg ml−1), solubilized inorganic phosphate (75–103 μgml-1) and produced siderophores (17.1–23.7%) in vitro. All the tested bacterial isolates showed varied level of susceptibility and resistance response against different antibiotics and all these bacterial isolates were found non-pathogenic to chill seeds and notably enhanced percentage seed germination, plumule, redical length and vigor index over un-inoculated control. Additionally, under pathogen pressure, bacterization increased the defense related enzymes (PO, PPO and PAL) activates. Moreover, chilli seeds treatment with these bacterial isolates significantly suppressed damping-off caused by P. myriotylum, and improved PGP traits as compared to control. In addition, a positive correlation was noticed between shoot, root length and dry shoot and root weigh and a negative correlation was seen between dry shoot, root weight and seedling percentage mortality. These results showed that native PGPR possess multiple traits beneficial to the chilli plants and can be used to develop eco-friendly and effective seed treatment formulation as an alternative to synthetic chemical fungicides.

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Exploring the Crucial Role of Plant Growth-Promoting Rhizobacteria (PGPR) in Plant Secondary Metabolite Production and Diabetes Management

Khadka

Pandey

2022

Fungal Biology

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Siderophore production in groundnut rhizosphere isolate, Achromobacter sp. RZS2 influenced by physicochemical factors and metal ions

Cited by 55 publications

References 27 publications

Production of Plant Beneficial and Antioxidants Metabolites by Klebsiellavariicola under Salinity Stress

Production of Plant Beneficial and Antioxidants Metabolites by Klebsiellavariicola under Salinity Stress

Biological control of chili damping off disease, caused byPythium myriotylum

Exploring the Crucial Role of Plant Growth-Promoting Rhizobacteria (PGPR) in Plant Secondary Metabolite Production and Diabetes Management

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