Olive and green tea leaves extract in Pleurotus ostreatus var. florida culture media: Effect on mycelial linear growth rate, diameter and growth induction index

Abstract

The exponential disposal of agro-industrial wastes onto the environment has endangered all forms of life. The implementation of these wastes in mushroom production is an eco-friendly and promising solution. The effect of olive and tea leaves extracts represented in culture media treatments: potato dextrose agar (PDA) 80% + tea extract (TE) 20% (T2), PDA 80% + olive extract (OE) 20% (T3), PDA 80% + OE 10% + TE 10% (T4), PDA 70% + OE 20% + TE 10% (T5) on mycelial growth diameter (MGD) and linear growth rate (MLGR) of Pleurotus ostreatus var. florida was compared to the one of PDA used as control (T1) at 22, 25 and 28°C inoculation temperatures. Optimum MGD was observed at 28°C in T1 (day 2), while it was significantly increased by 1.1–1.4 folds (days 4, 6, 8) in culture media containing plant extracts nevertheless the inoculation temperature. MLGR was improved by 102%–145% in olive/tea culture media compared to PDA nevertheless the inoculation temperature. Optimum growth induction index (GII) was observed in T3 (22.2%) at 22°C, T5 (21.9%) at 25°C and T4 (18.2%) at 28°C. These findings suggest the combination of olive and tea leaves extracts in the production of Pleurotus ostreatus.

Comparative Transcriptome Profiles of the Response of Mycelia of the Genus Morchella to Temperature Stress: An Examination of Potential Resistance Mechanisms

“…In agricultural production, temperature is one of the most important environmental factors affecting the artificial cultivation of edible fungi [ 11 , 12 ]. Unfavorably high ambient temperatures significantly affect the activity of substrate-degrading enzymes and antioxidant enzymes in mycelia during the nutritional growth stage, alter the conversion rate of proteins and polysaccharides, and cause differences in material conditions during primordial differentiation, thereby triggering a series of physiological and biochemical responses [ 13 ].…”

From waste to protein: a new strategy of converting composted distilled grain wastes into animal feed

“…In particular, white-rot fungi, a category of microorganisms in nature that are effective at lignin degradation, have drawn much more attention (Wang J. et al, 2022). It has been pronounced by the degradation of various agro-industrial wastes, e.g., olive pruning residues, tea wastes, and spent coffee grounds (Abou Fayssal et al, 2021;Werghemmi et al, 2022). This not only reduces lignin dispersion in the environment but also helps in the bioremediation of various pollutants of anthropogenic sources (Širić et al, 2022).…”

Trichoderma Species Problematic to the Commercial Production of Pleurotus in Italy: Characterization, Identification, and Methods of Control

“…The compost used in industrial mushroom production is host to both innocuous as well as aggressive isolates of Trichoderma, which cannot be morphologically distinguished from one another [13,[18][19][20]. The richness of the compost/substrate in holocellulose compounds, i.e., hemicellulose, cellulose, and lignin, which are high energy sources for fungal populations, encourages Trichoderma proliferation [21,22]. Among the isolates obtained from the infested A. bisporus compost, four different biological forms of Trichoderma were found.…”