1,720,997 research outputs found
Response in vitro of lignin degrading fungi to single or combined applications of a biochar and a compost humic acid
No full textThe fungi Stereum hirsutum, Irpex lacteus, Phanerochaete chrysosporium, Bjerkandera adusta, Trametes versicolor and Pleurotus ostreatus were treated in vitro with a biochar (BC) from red spruce wood at doses of 0.2% (w/v, BCLD) and 1% (BCHD), the BC water extract (BCWE) at doses of 0.2% (w/v, BCWELD) and 1% (BCWEHD), a compost humic acid (HA) at a concentration of 200 mg L-1and combinations BCWE-HA. All BC treatments stimulated P. ostreatus growth (up to 26%). T. versicolor growth was increased (up to 10%) and reduced (down to 33%) by BCLDand BCHD, respectively. All the other fungi were always inhibited by BC (down to 59% for B. adusta with BCHD). BCWELDincreased hyphal elongation of B. adusta and T. versicolor up to 22% and 12%, respectively, whereas BCWEHDslightly reduced that of B. adusta. In general, both HA alone and all combinations BCWE-HA at both doses significantly stimulated mycelial growth of B. adusta, T. versicolor and P. ostreatus (up to 22% for B. adusta) or were irrelevant. These findings indicate that when BC is incorporated in soil, BC activity in vitro on ligninolytic fungi might be considerably modified by the contents of water and humic substances present in soil
Effetti in vitro dell’applicazione singola o combinata di un biochar e di un acido umico da compost su funghi ligninolitici.
No full textRemoval of ascertained and suspected endocrine disruptors from liquid media and abatement of phytotoxicity using low-cost plant-derived adsorbents.
No full textBiochar effects on soil-resident ligninolytic fungi: in vitro growth response and its pH dependence
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Effects of a biochar and its water extract on the in vitro growth of soil-resident ligninolytic fungi
No full textSorption of estrogens and pesticides from aqueous solution by a humic acid and raw and processed plant materials
No full textA Two-Step Approach to Eliminate Pesticides and Estrogens from a Wastewater and Reduce Its Phytotoxicity: Adsorption onto Plant-Derived Materials and Fungal Degradation
No full textIn this study, adsorption and biodegradation were exploited sequentially to remove the herbicide fenuron, the insecticide carbaryl and the estrogens 17β-estradiol (E2) and 4-tert-octylphenol (OP) from a municipal landfill leachate (MuLL). In the first step, we used spent coffee grounds, almond shells, a biochar and potato dextrose agar to adsorb the compounds spiked in MuLL at a concentration of 1 mg L−1. After only 3 days, any adsorbent removed from MuLL the totality of E2 and OP, averagely more than 95 % of carbaryl and 62 % of fenuron (81 % after 7 days). In the second step, the adsorbents collected from MuLL after 7 days were inoculated with the fungi Bjerkandera adusta and Irpex lacteus, separately. After 7 days, the maximum degradation occurred for OP in any treatment being averagely 78 and 74 % using B. adusta and I. lacteus, respectively. After 15 days, the average percentages of fenuron, carbaryl, E2 and OP degraded were, respectively, 75, 76, 88 and 88 % using B. adusta, and 74, 79, 85 and 89 % using I. lacteus. Residual estrogenicity in the adsorbents, tested with the recombinant yeast assay, was strictly related to residual E2, thus indicating a negligible contribution from the other contaminants and/or degradation products. The 7-day treatment of MuLL with the adsorbents caused a significant abatement of MuLL phytotoxicity on flax (2.5 times seedling elongation with coffee grounds, compared to MuLL) and a huge stimulation of rapeseed respect to water (biomass almost doubled), thus suggesting a possible worthwhile recycling of this wastewater in agriculture
Effetti di un biochar e del suo estratto acquoso sulla crescita di funghi ligninolitici del suolo.
No full textRemoval of pesticides and estrogens from a wastewater and abatement of its phytotoxicity using plant-derived adsorbents and ligninolytic fungi.
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