Plant Growth Promoting Potential of Bacterial Endophytes from Medicinal Plants

Ramanuj, Krupali; Shelat, Harsha N.

doi:10.9734/air/2018/40014

Cited by 6 publications

(4 citation statements)

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“…TNR15, TKR 1 II, and AVJR7 II having the ability to produce siderophore on Chrome-azurol S medium (CAS-medium) by producing orange to yellow halo zone around the bacterial colonies under iron limiting conditions. Ramanuj and Shelat (2018) characterize the siderophore producing plant growth promoting potential of bacterial endophytes from medicinal plants. Siderophore production form bacterial strains are considered one of the direct mechanisms of plant growth promotion.…”

Section: Plant Growth Promotory Traitsmentioning

confidence: 99%

Enzymatic Activity and Plant Growth Promoting Potential of Endophytic Bacteria Isolated from Ocimum sanctum and Aloe vera

Joshi¹,

Singh²,

Prasad³

2018

Int.J.Curr.Microbiol.App.Sci

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Section: Plant Growth Promotory Traitsmentioning

confidence: 99%

Enzymatic Activity and Plant Growth Promoting Potential of Endophytic Bacteria Isolated from Ocimum sanctum and Aloe vera

Joshi¹,

Singh²,

Prasad³

2018

Int.J.Curr.Microbiol.App.Sci

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“…Endophytism is now considered as a universal phenomenon, and it is believed that all plants harbour endophytic bacteria (Compant et al 2010;Dudeja & Giri 2014). The endophytic bacteria can have immense potential in the uptake of nutrients (de Souza et al 2016;Ribeiro et al 2018), growth promotion (Ramanuj & Shelat 2018;Santos et al 2018), as biofertilizers (Ngamau et al 2014;Santos et al 2018), as biocontrol agents (Kandel et al 2017;Selim et al 2017) and in secondary metab-vol. 44 (2) olite production (Brader et al 2014;Singh et al 2017;Palanichamy et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Diversity and the role of endophytic bacteria: A review

2020

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Endophytes belong to a widespread group of microorganisms that colonise intracellular and intercellular spaces in all known plant parts but do not cause diseases or major morphological changes to the host. Endophytic bacteria ubiquitously colonise plant internal tissues, where they can form a variety of interactions, including commensalistic, symbiotic, trophobiotic and mutualistic. Endophytic bacteria produce pharmaceutically important compounds such as antimicrobials, antioxidants, industrial enzymes, antidiabetics and anti-cancer agents. In addition, endophytes can also support their host by producing a variety of natural products for potential use in medicine, agriculture or industry. This group of bacteria can have a tremendous impact on plant communities, raising their fitness by endowing tolerance to biotic and abiotic stress. There are great prospects for searching, selecting and studying new endophytic bacteria species in order to create new microbial preparations for adaptive crop production, while reducing the environmental impacts of agriculture. The present review summarises studies to date about endophytic bacteria, including topics such as isolation methods, the diversity of these bacteria and their biological roles.

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“…Applied chemical fertilizers such as Zn-sulfate, Zn-ammonia complex, Zn-nitrate, Zn-oxide, Znoxysulfate, Zn-carbonate, and Zn-chloride are remained found in soil surface and unavailable to plants (Khanghahi et al, 2018). Several researches have reported that phosphate-solubilizing bacteria (PSB) and zinc-solubilizing bacteria (ZSB) had a potential to increase P and Zn availability for plants through various mechanisms such as production of phosphatase enzymes and chelating agents, and secretion of organic acids ) and dibasic (HPO 4 −2 ) ions (Richardson et al, 2009;Bashan et al, 2013;Khan et al, 2014;Ramanuj and Shelat, 2018). Organic acids such as oxalic, citric, butyric, malonic, lactic, succinic, malic, gluconic, acetic, fumaric, etc.…”

Section: Qualitative Analysis Of Phosphate and Zinc Solubilizationmentioning

confidence: 99%

“…Pantoea, Rahnella, Enterobacter, Acinetobacter, Bacillus and Gluconacetobacter reportedly possessed solubilizing capability of both P and Zn. (Kumari et al, 2018;Khamwan et al, 2018;Ramanuj and Shelat, 2018).…”

Section: Qualitative Analysis Of Phosphate and Zinc Solubilizationmentioning

confidence: 99%

Identification and application in plant of plant growth-promoting endophytic bacteria

Sitlaothaworn

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Seventy-eight endophytic bacteria isolated from 15 plant samples in Thailand including 50 isolates from sugarcane root samples obtained from 6 Provinces and 28 isolates from stems and leaves of healthy plants in Kanchanaburi Province, were identified and evaluated for plant growth promoting capability using rice as a plant model. They were identified as Gluconacetobacter (37 isolates), Pantoea (14 isolates), Burkholderia (2 isolates), Pseudomonas (4 isolates), Priestia (4 isolates), Enterobacter (2 isolates), Acinetobacter (2 isolates), Novosphingobium (2 isolates), Curtobacterium (2 isolates), and each of Nguyenibacter, Aureimonas, Bacillus, Peribacillus, Sphingobium, Staphylococcus, Brevibacillus, Aneurinibacillus, and Pseudarthrobacter based on their phenotypic characteristics and 16S rRNA gene analyzes. According to the 16S rRNA gene phylogeny, strain Sx8-5T was a member of genus Novosphingobium and shared the highest sequence similarity to Novosphingobium barchaimii LL02T of 99.4% and other Novosphingobium species (<99.4%). The ANIb and ANIm values of whole genome comparison between strain Sx8-5T and seven closely related type strains were 72.33-82.14%, 83.82-87.38%, respectively, and the digital DNA-DNA hybridization (dDDH) values ranged from 21.0% to 28.6% when compared to the type strains of the member of Novosphingobium. Based on the results obtained, demonstrated that strain Sx8-5T represents a novel species of the genus Novosphingobium, the name Novosphingobium kaempferiae sp. nov. is proposed. Sixty-one strains were positive in fixing nitrogen through nitrogenase activity by converting of N2 in the air to ammonia, which was supported by nif genes found in the genome of G. dulcium PS25. Sixty-nine strains were able to solubilize tricalcium phosphate (SI=1.18-4.4) and 72 strains were able to solubilize zinc oxide (SI=1.59-5.6). Sixteen strains could produce IAA (6.13 to 202.25 ?g/mL) in NF medium supplemented with 0.01% L-tryptophan, a main precursor for IAA biosynthesis. The maximum IAA produced by the Sphingobium sp. Sx8-8 increased to 232.1 ?g/mL at optimized conditions: pH 7, 30oC, 0.5% L-tryptophan and 48 h cultivation. In in vitro 2 rice varieties germination, the Sphingobium sp. Sx8-8 and Pantoea sp. S5-1 increased root length (4.83, 3.24 cm), shoot length (18.7, 13.75 cm) and number of lateral roots of rice RD6' seedlings more than control and standard IAA, similar to Aureimonas sp. SK2, G. dulcium PS25 and G. liquefaciens LSG1 significantly increased root length (3.09-3.49 cm), shoot length (10.14-11.21 cm), number of lateral roots, and biomass of Khao Dawk Mali 105' rice seedlings. This study indicated that endophytic bacteria could potentially promote plant growth and be utilized as bioinoculant or biofertilizers in agriculture.

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Plant Growth Promoting Potential of Bacterial Endophytes from Medicinal Plants

Cited by 6 publications

References 0 publications

Enzymatic Activity and Plant Growth Promoting Potential of Endophytic Bacteria Isolated from Ocimum sanctum and Aloe vera

Enzymatic Activity and Plant Growth Promoting Potential of Endophytic Bacteria Isolated from Ocimum sanctum and Aloe vera

Diversity and the role of endophytic bacteria: A review

Identification and application in plant of plant growth-promoting endophytic bacteria

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