Relationship between production of 3-indoleacetic acid and peroxidase-laccase activities depending on the culture periods inFunalia trogii (Trametes trogii)

Ünyayar, Serpil; Ünal, E.; Ünyayar, Ali

doi:10.1007/bf02873589

Cited by 7 publications

(2 citation statements)

References 20 publications

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“…As stated previously, the decrease in IAA production after 72 h might be due to the synthesis of IAA degrading enzymes such as IAA oxidase and peroxidase [17,18]. Unyayar et al [19] reported that the amount of these enzymes were high in the stationary phase. Among the isolates, strain BC-On was the best IAA producer with 46.25 mg/l and strain BC-SO produced only small amount of IAA (21.25 mg/l) (Fig 1b).…”

Section: Screening Of B Cereus Isolates For Iaa Productionmentioning

confidence: 77%

Biosynthesis Of Indole-3-Acetic Acid By Bacillus cereus Immobilized Cells

Özdal¹,

Ozdal²,

Sezen³

et al. 2016

CSJ

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Abstract. Four different strains of Bacillus cereus producing indole-3-acetic acid (IAA) were isolated from various rhizospheric soils and characterized biochemically. The isolates were screened for (IAA) production and BC-On strain was found to be the best IAA producer with 46.25 mg/l. Maximum IAA production was obtained in the stationary growth phase at 72h. Significant correlation was also observed between IAA production and growth of the B. cereus strains. Among the isolates, BC-On strain was further used for immobilization studies. Maximum IAA production was obtained at initial pH of 8.0 and temperature of 35 °C after 18 h of fermentation. The immobilized cells could be effectively reused thirteen times and the IAA concentration of 300 mg/l was determined during this period. Results showed that immobilized cells can be used in the continuous process for the production of IAA. The productivity obtained by immobilization was higher than the one obtained by submerged cultivation and immobilization reduced the fermentation time.Keywords: Indole-3-acetic acid, Rhizobacteria, Bacillus cereus, Immobilization Immobilize Bacillus cereus Hücreleri Tarafından İndol-3-Asetik Asitin BiyosenteziÖzet. İndol-3-asetik asit (İAA) üreten dört farklı Bacillus cereus straini çeşitli rizosfer topraklarından izole edildi ve biyokimyasal olarak karakterize edilmiştir. İzolatlar İAA üretimi için taranmış ve BC-On straini 46.25 mg/l ile en iyi İAA üreticisi olarak bulunmuştur. En fazla IAA üretimi 72. saatte durağan büyüme fazında elde edilmiştir. B. cereus strainlerinin IAA üretimi ve büyüme arasında önemli bir ilişki gözlenmiştir. İzolatlar arasında, BC-On straini immobilizasyon çalışmalarında kullanılmıştır. En fazla IAA üretimi 18 saatlik fermentasyon sonrasında başlangıç pH'sı 8.0 ve 35 °C elde edilmiştir. İmmobilize edilmiş hücreler etkili olarak on üç kez kullanılabilmiş ve bu süre boyunca 300 mg/l İAA konsantrasyonu tespit edilmiştir. Sonuçlar immobilize hücrelerin IAA üretimi için sürekli bir işlemde kullanılabilir olduğunu göstermiştir. İmmobilizasyon ile elde edilen verimlilik, derin fermentasyon ile elde edilenden daha yüksek olduğu bulunmuş ve immobilizasyon fermentasyon süresini kısaltmıştır.

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Section: Screening Of B Cereus Isolates For Iaa Productionmentioning

confidence: 77%

Biosynthesis Of Indole-3-Acetic Acid By Bacillus cereus Immobilized Cells

Özdal¹,

Ozdal²,

Sezen³

et al. 2016

CSJ

View full text Add to dashboard Cite

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“…Several actinobacteria are known to produce IAA in considerable quantities (Marschner 1995; Plant growth promoting Actinobacteria (PGPA) Unyayar et al 2001;Ghosh et al 2011). Production of IAA in Streptomyces is tryptophan dependent, and it follows the route of indole acetamide (Lin and Xu 2013).…”

Section: Indole Acetic Acid Productionmentioning

confidence: 99%

Role of Actinomycete-Mediated Nanosystem in Agriculture

Subramanian

Muniraj

Uthandi

2016

Plant Growth Promoting Actinobacteria

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Actinobacteria are a group of microorganisms sharing the common behaviour of both bacteria and fungi known to play a multifunctional role in agricultural production systems. The major functions include the production of a wide array of growth-promoting compounds and metabolites including antibiotics that provide the host plants to withstand both biotic and abiotic stress conditions. Consequently, actinobacteria are often employed as a biocontrol agent (BCA) against dreadful plant pathogens. Further, actinobacteria colonized host plants and elute growth-promoting substances that assist in favouring stimulated growth of plants even under harsh environmental conditions such as nutrient deficiencies, drought, salinity and heavy metal contaminated soils. Several actinobacteria are involved in the nutrient solubilization and mobilization particularly phosphates and iron besides facilitating as helper bacteria in mycorrhizal symbiosis and biological nitrogen fixation. These groups of organisms also are responsible for the production of a volatile compound called "geosmin" which often referred as a biological indicator of soil fertility. Recently, large volume of research reports suggest that actinobacteria are capable of producing metal oxide nanoparticles that can be exploited in the green synthesis of nanomaterials and utilized in biological systems. Overall, the multifunctionality of actinobacteria makes this group of microorganisms very unique, and their potentials are yet to be exploited. This book chapter highlights the

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Decolorization of industrial dyes by a Brazilian strain ofPleurotus pulmonarius producing laccase as the sole phenol-oxidizing enzyme

et al. 2002

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The ability of a Brazilian strain of Pleurotus pulmonarius to decolorize structurally different synthetic dyes (including azo, triphenylmethane, heterocyclic and polymeric dyes) was investigated in solid and submerged cultures. Both were able to decolorize completely or partially 8 of 10 dyes (Amido Black, Congo Red, Trypan Blue, Methyl Green, Remazol Brilliant Blue R, Methyl Violet, Ethyl Violet, Brilliant Cresyl Blue). No decolorization of Methylene Blue and Poly R 478 was observed. Of the four phenol-oxidizing enzymes tested in culture filtrates (lignin peroxidase, manganese peroxidase, aryl alcohol oxidase, laccase), P. pulmonarius produced only laccase. Both laccase activity and dye decolorization were related to glucose and ammonium starvation or to induction by ferulic acid. The decolorization in vivo was tested using three dyes--Remazol Brilliant Blue R, Trypan Blue and Methyl Green. All of them were completely decolorized by crude extracellular extracts. Decolorization and laccase activity were equally affected by pH and temperature. Laccase can thus be considered to be the major enzyme involved in the ability of P. pulmonarius to decolorize industrial dyes.

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Relationship between production of 3-indoleacetic acid and peroxidase-laccase activities depending on the culture periods inFunalia trogii (Trametes trogii)

Cited by 7 publications

References 20 publications

Biosynthesis Of Indole-3-Acetic Acid By Bacillus cereus Immobilized Cells

Biosynthesis Of Indole-3-Acetic Acid By Bacillus cereus Immobilized Cells

Role of Actinomycete-Mediated Nanosystem in Agriculture

Decolorization of industrial dyes by a Brazilian strain ofPleurotus pulmonarius producing laccase as the sole phenol-oxidizing enzyme

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