Streptomyces sp. VITGV100: An endophyte from Lycopersicon esculentum as new source of indole type compounds

Veilumuthu, P.; Nagarajan, T; Sasikumar, Srijith; Siva, R; Jose, Shanty; Christopher, J. Godwin

doi:10.1016/j.bse.2022.104523

Cited by 5 publications

(1 citation statement)

References 42 publications

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“…The GC required 25 minutes to complete. The dried crude obtained was diluted with the same solvent and studied with GC-MS analysis ( Veilumuthu et al., 2022 ).…”

Section: Methodsmentioning

confidence: 99%

Fungicidal and plant growth-promoting traits of Lasiodiplodia pseudotheobromae, an endophyte from Andrographis paniculata

Segaran

Sathiavelu

2023

Front. Plant Sci.

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IntrodutionFungal endophytes are widespread and dwell inside plant cells for at least part of their life without producing any symptoms of infection. Distinct host plants may have different fungal endophyte rates and community compositions. Despite this, the endophytic fungi connected with the host plant and their hostile behaviors, remain unknown.MethodsThe objective of the current research was to isolate and identify endophytic fungal species from the root of Andrographis paniculata. The effects of fungal isolate APR5 on the mycelial growth of phytopathogens and the production of plant-promoting traits were assessed. Results and discussionEndophytic fungal isolate APR5 showed higher inhibitory efficacy in dual and double plate assay against the tested phytopathogenic fungi. The scanning electron microscope analysis demonstrated that the phytopathogenic fungal hyphae were coiled by endophytes which makes them shrink and disintegrate. Further, an ethyl acetate crude extract effectively suppressed the mycelium growth of Rhizoctonia solani by 75 ± 0.1% in an agar well diffusion assay. The fungal isolate APR5 was identified as Lasiodiplodia pseudotheobromae using the nuclear ribosomal DNA internal transcribed spacer (ITS) region and qualitatively evaluated for their capacity to produce plant growth-promoting hormones. Gas chromatography-mass spectrometry was implemented to acquire a preliminary understanding of the secondary metabolic profile of ethyl acetate crude extract. 1-octadecene, erythritol, niacin, oleic acid, phenol, pantolactone, phenyl ethyl alcohol, p-cresol, and tbutyl hydroquinone are the metabolites analyzed in a crude extract of APR5 isolate and are reported to have antimicrobial properties.

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“…The GC required 25 minutes to complete. The dried crude obtained was diluted with the same solvent and studied with GC-MS analysis ( Veilumuthu et al., 2022 ).…”

Section: Methodsmentioning

confidence: 99%

Fungicidal and plant growth-promoting traits of Lasiodiplodia pseudotheobromae, an endophyte from Andrographis paniculata

Segaran

Sathiavelu

2023

Front. Plant Sci.

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Patinformatics and Citation Network Analysis Dealing with Potential Microbial Bioinoculant Streptomyces, as a Reliable Green Solution for Sustainable Agriculture

Thakur,

Yadav

2024

J Plant Growth Regul

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Actinomycetes Strain Selection From Maize Rhizosphere With Antagonistic Potential Against Fungal Phytopathogen

Oyedoh,

Ayangbenro,

Babalola

2024

Preprint

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Fungal infestation in maize reduces productivity by 80%, with leaf blight disease causing about 60% reduction in grain yield. Numerous studies have shown the efficacy of synthetic chemicals in reducing the disease severity in agro-systems, which was efficient but with several negative impacts. Hence, there is an urgency to search for a more sustainable alternative with similar or better efficiency. This study was conceptualized to select a strain with in vitro antagonistic activity against leaf blight causative fungi and predict the secondary metabolites produced through the culture-dependent method and whole genome sequencing approach. Maize pathogens, Bipolaris sp., Fusarium equiseti, and Phoma sp., were obtained from symptomatic leaves and known to cause leaf blight diseases in maize crops, and antagonized by Streptomyces sp. OP7. The OP7 strain was isolated from the rhizosphere of maize crop and its cell-free supernatant extract showed antifungal activity against phytopathogens tested. The complete whole genome data of Streptomyces sp. OP7 revealed the presence of 16 biosynthetic gene clusters similar to metabolites with antifungal functional annotations implicating Streptomyces sp. OP7’s capacity to produce valuable agroactive compounds.

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Streptomyces sp. VITGV100: An endophyte from Lycopersicon esculentum as new source of indole type compounds

Cited by 5 publications

References 42 publications

Fungicidal and plant growth-promoting traits of Lasiodiplodia pseudotheobromae, an endophyte from Andrographis paniculata

Fungicidal and plant growth-promoting traits of Lasiodiplodia pseudotheobromae, an endophyte from Andrographis paniculata

Patinformatics and Citation Network Analysis Dealing with Potential Microbial Bioinoculant Streptomyces, as a Reliable Green Solution for Sustainable Agriculture

Actinomycetes Strain Selection From Maize Rhizosphere With Antagonistic Potential Against Fungal Phytopathogen

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