Bio-transformed sawdust by white rot fungi used as a carrier for plant growth-promoting bacteria

Rojas-Higuera, Naydú; Pava-Sánchez, Ana Milena; Rangel, Diana; Díaz-Ariza, Lucía A.; Quevedo-Hidalgo, Balkys; Pedroza-Rodríguez, Aura M.

doi:10.1007/s00107-016-1099-x

Cited by 9 publications

(16 citation statements)

References 49 publications

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“…Once the best filling mixture was selected, microcosm system set-up was performed in 750 mL glass bottles, with hermetic seal rubber stopper adapted for a “J” aeriation system incorporating a 0.22 μ m gage Millex-GP SLGP033RB syringe, a port for nutrient input and an outlet for gas exit, connected to a 0.4 N NaOH trap for CO 2 capture. Each microcosm was continuously aeriated at a 135 mL min -1 ratio, employing a Xilong AP-005 (110 V-60 Hz) engine, [4]. To each microcosm a mixture composed of 24 g PB, 27 g CPN and 9 g BYH in addition to 3% moist P .…”

Section: Methodsmentioning

confidence: 99%

“…Plant and flower grower industries produce vast quantities of organic waste (bark, sawdust, leaves, stems, fragmented flowers, among others) containing high amounts of lignin, cellulose and hemicellulose [4–6]. In addition, these companies use low and high-density polyethylene (LDPE and HDPE) with different purposes: packing planting material, seedling rooting, mulching, greenhouse fabrication and wrapping of product [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…3.2.1. ), hydrolyzing hydrophilic and hydrophobic polymers generating smaller subunits [4,6], ( iii ) respond positively to addition of redox mediators to increase redox potential of enzymes, such as Lac (E.C. 1.10.3.2); allowing lignin non-aromatic fractions and LDPE oxo aliphatic amorphous fractions to be oxidized [1] and ( iv ) oxidize aromatic and aliphatic subunits in lignocellulosic biomass and plastic in a non-selective manner, through non-enzymatic processes such as biological Fenton producing oxygen reactive species like hydroxyls [21,22].…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous bioconversion of lignocellulosic residues and oxodegradable polyethylene by Pleurotus ostreatus for biochar production, enriched with phosphate solubilizing bacteria for agricultural use

et al. 2019

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A simultaneous treatment of lignocellulosic biomass (LCB) and low density oxodegradable polyethylene (LDPE oxo ) was carried-out using Pleurotus ostreatus at microcosm scale to obtain biotransformed plastic and oxidized lignocellulosic biomass. This product was used as raw matter (RM) to produce biochar enriched with phosphate solubilizing bacteria (PSB). Biochar potential as biofertilizer was evaluated in Allium cepa culture at greenhouse scale. Experiments including lignocellulosic mix and LDPE oxo were performed for 75 days in microcosm. Biotransformation progress was performed by monitoring total organic carbon (TOC), CO 2 production, laccase (Lac), manganese peroxidase (MnP), and lignin peroxidase (LiP) enzymatic activities. Physical LDPE oxo changes were assessed by atomic force microscopy (AFM), scanning electron microscopy (SEM) and static contact angle (SCA) and chemical changes by Fourier transform infrared spectroscopy (FTIR). Results revealed P . ostreatus was capable of LCB and LDPE oxo biotransformation, obtaining 41% total organic carbon (TOC) removal with CO 2 production of 2,323 mg Kg -1 and enzyme activities of 169,438 UKg -1 , 5,535 UKg -1 and 5,267 UKg -1 for LiP, MnP and Lac, respectively. Regarding LDPE oxo , SCA was decreased by 84%, with an increase in signals at 1,076 cm -1 and 3,271 cm -1, corresponding to C-O and CO-H bonds. A decrease in signals was observed related to material degradation at 2,928 cm -1 , 2,848 cm -1 , agreeing with CH 2 asymmetrical and symmetrical stretching, respectively. PSB enriched biochar favored A . cepa plant growth during the five-week evaluation period. To the best of our knowledge, this is the first report of an in vitro circular production model, where P . ostreatus was employed at a microcosmos level to bioconvert LCB and LDPE oxo residues from the agroindustrial sector, followed by thermoconversion to produce an enriched biochar with PSB to be used as a biofertilizer to grow A . cepa at greenhouse scale.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simultaneous bioconversion of lignocellulosic residues and oxodegradable polyethylene by Pleurotus ostreatus for biochar production, enriched with phosphate solubilizing bacteria for agricultural use

et al. 2019

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“…3.2.1.91). The production of these enzymes could increase COD and TOC removal 45 . Another factor that may favour COD and TOC removal is a high C/N ratio in SBL compounds.…”

Section: Resultsmentioning

confidence: 99%

“…The demethoxylation at position 6 of dimethoxyphenol to form 2-methoxyphenol, which was not present in the initial SBL, was also revealed. This compound is considered one of the final aromatic intermediates in lignin degradation and has reported bactericidal and inhibitory effects on many seeds and plants 45 (Table 2 ).…”

Section: Resultsmentioning

confidence: 99%

Detoxification of pulping black liquor with Pleurotus ostreatus or recombinant Pichia pastoris followed by CuO/TiO2/visible photocatalysis

Rivera-Hoyos

Morales-Álvarez

Abelló-Esparza

et al. 2018

Sci Rep

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Cellulose-pulping requires chemicals such as Cl2, ClO2, H2O2, and O2. The black liquor (BL) generated exhibits a high chemical oxygen demand (COD), five-day biochemical oxygen demand (BOD5), and chlorophenol content, along with an augmented colour and increased pH. BL is often discharged into water bodies, where it has a negative impact on the environment. Towards that end, laccases are of great interest for bioremediation, since they can degrade aromatic and non-aromatic compounds while reducing O2 to water instead of H2O2. As such, we evaluated Pleurotus ostreatus and Pichia pastoris (which produces rPOXA 1B laccase) in the treatment of synthetic BL (SBL) in an “in vitro” modified Kraft process followed by CuO/TiO2/visible light photocatalysis. Treating SBL with P. ostreatus viable biomass (VB) followed by CuO/TiO2/visible light photocatalysis resulted in 80.3% COD removal and 70.6% decolourisation. Toxic compounds such as 2-methylphenol, 4-methylphenol, and 2-methoxyphenol were eliminated. Post-treated SBL exhibited low phytotoxicity, as evidenced by a Lactuca sativa L seed germination index (GI) > 50%. Likewise, SBL treatment with P. pastoris followed by VB/CuO/TiO2/visible light photocatalysis resulted in 63.7% COD removal and 46% decolourisation. Moreover, this treatment resulted in the elimination of most unwanted compounds, with the exception of 4-chlorophenol. The Lactuca sativa L seed GI of the post-treated SBL was 40%, indicating moderate phytotoxicity.

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Clonostachys rosea Strain ST1140: An Endophytic Plant-Growth-Promoting Fungus, and Its Potential Use in Seedbeds with Wheat-Grain Substrate

Türkölmez¹,

Özer

2022

Curr Microbiol

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Bio-transformed sawdust by white rot fungi used as a carrier for plant growth-promoting bacteria

Cited by 9 publications

References 49 publications

Simultaneous bioconversion of lignocellulosic residues and oxodegradable polyethylene by Pleurotus ostreatus for biochar production, enriched with phosphate solubilizing bacteria for agricultural use

Simultaneous bioconversion of lignocellulosic residues and oxodegradable polyethylene by Pleurotus ostreatus for biochar production, enriched with phosphate solubilizing bacteria for agricultural use

Detoxification of pulping black liquor with Pleurotus ostreatus or recombinant Pichia pastoris followed by CuO/TiO2/visible photocatalysis

Clonostachys rosea Strain ST1140: An Endophytic Plant-Growth-Promoting Fungus, and Its Potential Use in Seedbeds with Wheat-Grain Substrate

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