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Novel biofertilizers from nutmeg rhizosphere of Wayanad, Kerala

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Title Novel biofertilizers from nutmeg rhizosphere of Wayanad, Kerala
 
Creator Salitha
Gopal, K Surendra
 
Subject Abiotic stress tolerance
Indole acetic acid (IAA)
Myristica fragrans
Plant growth-promoting rhizobacteria (PGPR)
Spice
 
Description 297-304
Nutmeg, Myristica fragrans Houtt., an important spice crop from India, is mostly grown in parts of Kerala state. Here,
we investigated the rhizosphere region of the nutrient exhaustive tree spice nutmeg for nitrogen fixers, phosphorus
solubilizers and potassium solubilizers. In this study, we sought to find new biofertilizer strains from the nutmeg
rhizosphere. Ten rhizosphere soil samples of nutmeg were collected from Wayanad district in Kerala. A total of 55
predominant isolates were obtained. The isolates produced indole acetic acid (IAA) in amounts between 0.4 and 11.81 μg
mL-1, fixed nitrogen in amounts between 2.1 and 3.5 mg g-1 of carbon source, solubilized phosphorus in amounts between
57.91 and 71.647 μg mL-1, and solubilized potassium in amounts between 6.66 and 8.30 mg mL-1. Based on the specific
plant growth promoting traits and IAA production, 15 isolates were characterized and selected for abiotic stress tolerance
(moisture and temperature) studies. With the molecular characterization of 16S rRNA, the six promising isolates were
identified as Staphylococcus equorum (nitrogen fixer), Staphylococcus pasteuri and Pseudomonas aeruginosa (phosphate
solubilizers), Pseudomonas veronii and Sphingobacterium anhuiense (potassium solubilizers). Possibly, it is the first report
of novel biofertilizer strains from nutmeg growing areas of Wayanad district in Kerala.
 
Date 2024-03-27T05:11:59Z
2024-03-27T05:11:59Z
2024-04
 
Type Article
 
Identifier 0975-1009 (Online); 0019-5189 (Print)
http://nopr.niscpr.res.in/handle/123456789/63617
https://doi.org/10.56042/ijeb.v62i04.746
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJEB Vol.62(04) [April 2024]