Diketopiperazines and arylethylamides produced by Schizophyllum commune, an endophytic fungus in Alchornea glandulosa

Araújo, Ângela R.; Biasetto, Carolina Rabal; Somensi, Andressa; Figueiro, Fernanda Sales; Moraes, Luiz Alberto Beraldo; Silva, Geraldo Humberto; Young, Maria Cláudia Marx; Bolzani, Vanderlan S.

doi:10.26850/1678-4618eqj.v44.3.2019.p36-42

Cited by 6 publications

(3 citation statements)

References 32 publications

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“…Maculosin was first reported in 1988 as a host-specific phytotoxin for spotted knapweed produced by Alternaria alternata [ 47 ]. After that, it was successively isolated from Schizophyllum commune [ 48 ], Pseudomonas sp. (ABS-36) [ 49 ], Streptomyces sp.…”

Section: Discussionmentioning

confidence: 99%

Analysis of the Antioxidant Composition of Low Molecular Weight Metabolites from the Agarolytic Bacterium Alteromonas macleodii QZ9-9: Possibilities for High-Added Value Utilization of Macroalgae

Wang

Feng

et al. 2022

Antioxidants

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Agar accounts for ~60% of the dry weight of some red macroalgae, and the breakdown of this kind of polysaccharide releases high-value compounds; therefore, the resource utilization of agar is of great significance to improve the added value of these macroalgae. Herein, Alteromonas macleodii QZ9-9 isolated from tropical Gracilaria hainanensis in Hainan Island was characterized as an agarolytic bacterium, which displayed a high agar-degrading activity. The highest diameters of the degradation zones of the A. macleodii QZ9-9 and its extracellular-agarase (12.16 U/mL) were 41.46 mm and 22.89 mm, respectively, and the first-order degradation rate constants of those were 0.02 h−1 and 0.77 U−1, respectively. Importantly, the fermentation products of A. macleodii QZ9-9 exhibited antioxidant activity, and the peak of DPPH scavenging activity of 50 h fermentation products of this strain was up to 50.79% in the reaction for 1 h; the DPPH scavenging activity of low molecule metabolites (≤3 kDa) in particular was up to ~85.85%. A total of 766 metabolites were detected in the low molecule metabolites by metabolomics. The peptide-like metabolites, such as prolyl–histidine, isoleucyl–histidine, isoleucyl–proline and arginyl–proline, and the antioxidant maculosin were found in the top 20 metabolites with relatively high abundance. Additionally, the antioxidant activity of maculosin was further verified in this work. We concluded that the low molecule metabolites of A. macleodii QZ9-9 with relatively high antioxidant activity are interesting candidates for preparing desirable non-toxic antioxidants, thereby facilitating the high value-added utilization of macroalgae in the fields of cosmetic, food preservation, and pharmaceutical industries.

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Section: Discussionmentioning

confidence: 99%

Analysis of the Antioxidant Composition of Low Molecular Weight Metabolites from the Agarolytic Bacterium Alteromonas macleodii QZ9-9: Possibilities for High-Added Value Utilization of Macroalgae

Wang

Feng

et al. 2022

Antioxidants

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“…S. commune has also been reported to produce diketopiperazines, aryl-ethyl amides, and phydroxybenzoic acid, a class of compounds that have high antioxidant and antifungal activity. Therefore, indirectly, S. commune contained in plant tissue can play a role in plant protection as a defense mechanism against microbes that can inhibit plant growth (Biasetto et al 2019).…”

Section: A B Cmentioning

confidence: 99%

CONFIRMATION OF ENDOPHYTIC MICROBES CAUSING CONTAMINATION IN WATER SPINACH (Ipomoea aquatica Forssk.) TISSUE CULTURE

Rahayu

Ramadhani

Masrukhin

et al. 2021

J Bioteknol Biosains Indones

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Konfirmasi Mikroba Endofit Penyebab Kontaminasi pada Kultur Jaringan Kangkung (Ipomoea aquatica Forssk.) Tanaman kangkung secara alami bersimbiosis dengan mikroba endofit, yang berpotensi menjadi kontaminan pada kultur jaringan kangkung karena berada di dalam jaringan dan sulit dijangkau saat proses sterilisasi eksplan. Tujuan penelitian ini adalah mengonfirmasi mikroba endofit penyebab kontaminasi pada kultur jaringan kangkung ‘Tetraploid’ sehingga dapat menjadi informasi awal untuk metode sterilisasi yang efektif. Sebanyak 14 sampel kontaminan pada media tanam kultur jaringan kangkung diisolasi dan diidentifikasi secara molekuler berdasarkan gen 16S rDNA untuk bakteri, daerah D1/D2 dari gen LSU rRNA untuk khamir, dan daerah ITS dari gen rDNA untuk jamur. Keragaman jenis mikroba yang teridentifikasi dibandingkan dengan keragaman jenis mikroba endofit dari jaringan tanaman kangkung yang ditanam pada media kultur jaringan tidak terkontaminasi mikroba, media kultur jaringan terkontaminasi mikroba, media tanam campuran tanah steril dan tidak steril, serta kangkung yang didapatkan dari pasar. Hasil penelitian ini mengonfirmasi bahwa khamir endofit dari kelompok Ustilaginaceae (basidiomycetous yeast) yang berasal dari jaringan tanaman kangkung sama dengan jenis kontaminan yang mengontaminasi media kultur jaringan kangkung ‘Tetraploid’. Khamir dari kelompok Ustilaginaceae (basidiomycetous yeast) tersebut juga merupakan mikroba paling dominan yang mengontaminasi media tanam kultur jaringan kangkung ‘Tetraploid’. Keywords: Ipomoea aquatica, kultur jaringan, mikroba endofit, morfologi, pohon filogeni Water spinach in nature lives in symbiosis with endophytic microbes, which have the potential to become contaminants in water spinach tissue culture because they are difficult to eliminate during the explant sterilization process. This study aimed to confirm endophytic microbes that cause contamination in the tissue culture of 'Tetraploid' water spinach so that it can provide initial information for an effective sterilization method. Fourteen contaminant samples in water spinach tissue culture media were isolated and identified molecularly based on the 16S rDNA gene for bacteria, the D1/D2 region of the LSU rRNA gene sequences for yeast, and ITS region of the rDNA gene for mold. The diversity of microbial species identified was compared with the diversity of endophytic microbial types from water spinach plant tissue grown on sterile tissue culture media, microbially contaminated tissue culture media, sterile and non-sterile soil mixed planting media, and water spinach obtained from the market. The results confirmed that endophytic yeast from Ustilaginaceae group (basidiomycetous yeast) derived from water spinach plant tissue was the same type of microbe that contaminated the 'Tetraploid' water spinach tissue culture media. The results gave new information that yeast from the Ustilaginaceae (basidiomycetous yeast) group was the most dominant microbe contaminating water spinach ‘Tetraploid’ tissue culture media. This group is endophytic yeast that lives within Ipomoea aquatica tissues.

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“…Em outro estudo, Biasetto et al (2019) Hidrocarbonetos podem ser utilizados em transformações microbianas, pois favorecem o crescimento, além de serem muitas vezes intermediários para produzir outros produtos (JACQUES et al, 2007). (JAVIDNIA et al, 2009).…”

Section: Concentração De Fipronilunclassified

Biodegradação dos pesticidas Bifentrina e Fipronil por bactérias do gênero >i<Bacillus>/i< isoladas da cultura da laranja

Viana¹

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Dedico este trabalho aos meus pais Faustina Rosse Galan Viana e Luiz Carlos Viana, a melhor família que Deus me presenteou. Agradecimentos A Deus por ter me ajudado e guiado os meus passos até aqui. Não há palavras que consigam expressar a minha gratidão. Ao Prof. Dr. André Luiz Meleiro Porto pela orientação nesta minha trajetória, pela paciência comigo e por tudo que me ensinou. À minha amiga Thay pela amizade, pelas inúmeras conversas, pelas risadas, pelo companheirismo e ajuda.

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Diketopiperazines and arylethylamides produced by Schizophyllum commune, an endophytic fungus in Alchornea glandulosa

Cited by 6 publications

References 32 publications

Analysis of the Antioxidant Composition of Low Molecular Weight Metabolites from the Agarolytic Bacterium Alteromonas macleodii QZ9-9: Possibilities for High-Added Value Utilization of Macroalgae

Analysis of the Antioxidant Composition of Low Molecular Weight Metabolites from the Agarolytic Bacterium Alteromonas macleodii QZ9-9: Possibilities for High-Added Value Utilization of Macroalgae

CONFIRMATION OF ENDOPHYTIC MICROBES CAUSING CONTAMINATION IN WATER SPINACH (Ipomoea aquatica Forssk.) TISSUE CULTURE

Biodegradação dos pesticidas Bifentrina e Fipronil por bactérias do gênero >i<Bacillus>/i< isoladas da cultura da laranja

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