A new record of Agaricus litoralis, a rare edible macro-fungus from Eastern Algeria

A rare edible macro-fungus of phylum Basidiomycota belonging to the genus Agaricus (Agaricales, Agaricomycetes) was collected at the forest of Djebel el Ouahech of Constantine region in the eastern of Algeria and was identified as Agaricus litoralis using morphological and molecular Data. The species Agaricus litoralis is reported for the first time in Algeria

Auxin originated from Actinobacteria participates in abiotic stress mitigation and sustainable crop production

Plants activate their defence mechanisms to prevent damage caused by environmental stimuli through signaling pathways controlled by growth regulators. These stresses adversely affect plants' growth, disrupting the genetic control of cellular pathways and altering their metabolism, physiology and morphology. Auxin influences phenotypic plasticity under optimal and unfavourable growth conditions. This review discusses the progress in the research on auxin-mediated stress alleviation in response to abiotic stresses in plants. Then, a brief presentation of studies emphasizing the significance of auxin-producing actinobacteria and how microbial auxin promotes plant development and stress tolerance. Then, the review probes the importance of actinobacteria strains as auxin metabolic engineers and their use as natural auxin suppliers in agriculture. Finally, the review explores future biotechnology possibilities through small-scale, large-scale production and agriculture's gradual banishment of chemical phytosanitary inputs

Yellow laccase produced by Trametes versicolor K1 on tomato waste: A comparative study with the blue one produced on semi-synthetic medium

info:eu-repo/semantics/publishe

Assessment of Green Processes for Tomato Waste Biovalorization: Spotlight on the Innovative Pulsed Electric Field–Laccase Synergy for Enhanced Sugar and Phenol Extraction Yields

Tomato waste (TW) is a plentiful lignocellulosic resource, mainly composed of seeds and skins, that can be converted into high-value compounds. This study explored the enhancement of TW enzymatic and fungal biovalorization using novel ecofriendly approaches, including advanced technology, pulsed electric fields (PEF). Crude laccase first produced on TW was used for enzymatic treatment, and the white rot fungus Trametes versicolor K1 was used in fungal treatment under SmF (submerged) or SSF (semi-solid) fermentation conditions. The physical PEF treatment had increased tenfold sugar extraction yield (83.4 mg/g) and twofold polyphenol extraction yield (4.43 g/g), with respect to the control. PEF–laccase innovative combination, reported for the first time, has enhanced significantly sugar extraction yield (100.6 mg/g), twofold higher than those released from TW after laccase treatment alone. However, the PEF treatment had no effect on polyphenol extraction yield when combined to laccase or fungal treatments. The treated TW was subjected to polysaccharide enzymatic hydrolysis. The combination of PEF with laccase or fungal treatment did not impact sugar yields; however, it allowed polyphenol liberation. During fungal treatment (i.e. T. versicolor K1 grown on TW), comparable maximal laccase activities of 2574.28 U/L and 2577.06 U/L were measured in the culture supernatants, in SmF and SSF conditions, respectively. The findings demonstrate the high potential of PEF for recovering phenols and sugars. When combined to fungal treatment, it offers high yields of valuable products, making it a potential cost-effective approach, providing new prospects for TW valorization.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Box-Behnken design optimization of xylanase and cellulase production by Aspergillus fumigatus on Stipa tenacissima biomass

info:eu-repo/semantics/publishe