Effect of phosphorus form and culturing mode on mycelial growth of Pleurotus pulmonarius and Pleurotus floridanus on rice straw
El-Fallal, A., El-Katony, T., Dahap, H., El-Gharabawy, H. (2023). Effect of phosphorus form and culturing mode on mycelial growth of Pleurotus pulmonarius and Pleurotus floridanus on rice straw. EKB Journal Management System, 13(3), 53-62. doi: 10.21608/sjdfs.2023.222643.1118
Amira Ali El-Fallal; Taha M. El-Katony; Heba E. Dahap; Hoda Mohamed El-Gharabawy. "Effect of phosphorus form and culturing mode on mycelial growth of Pleurotus pulmonarius and Pleurotus floridanus on rice straw". EKB Journal Management System, 13, 3, 2023, 53-62. doi: 10.21608/sjdfs.2023.222643.1118
El-Fallal, A., El-Katony, T., Dahap, H., El-Gharabawy, H. (2023). 'Effect of phosphorus form and culturing mode on mycelial growth of Pleurotus pulmonarius and Pleurotus floridanus on rice straw', EKB Journal Management System, 13(3), pp. 53-62. doi: 10.21608/sjdfs.2023.222643.1118
El-Fallal, A., El-Katony, T., Dahap, H., El-Gharabawy, H. Effect of phosphorus form and culturing mode on mycelial growth of Pleurotus pulmonarius and Pleurotus floridanus on rice straw. EKB Journal Management System, 2023; 13(3): 53-62. doi: 10.21608/sjdfs.2023.222643.1118

Effect of phosphorus form and culturing mode on mycelial growth of Pleurotus pulmonarius and Pleurotus floridanus on rice straw

Scientific Journal for Damietta Faculty of Science
Volume 13, Issue 3, December 2023, Page 53-62  XML PDF (679.38 K)
Document Type: Original articles
DOI: 10.21608/sjdfs.2023.222643.1118
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Authors
Amira Ali El-Fallal1; Taha M. El-Katony2; Heba E. Dahap3; Hoda Mohamed El-Gharabawy email 3
1Botany and Microbiology Dept. , Faculty of Science , Damietta University
2Botany Department, Faculty of Science, Damietta University, New Damietta City, Egypt.
3Botany and Microbiology Dep., Faculty of Science, Damietta University
Abstract
Oyster mushroom (Pleurotus spp.) cultivation gained a growing concern due to their limited growth requirements and high nutritional value and bioactive compounds. Present work investigates the effect of rice straw supplementation with inorganic P (KH2PO4) and organic P (wheat bran) with presence or absence of agar layer above straw on mycelial growth of two oyster mushrooms: P. pulmonarius and P. floridanus. Mycelial growth was better with bran than with KH2PO4, particularly without agar. Such a differential effect of P form and agar layer was more evident on P. pulmonarius than on P. floridanus. Mycelial growth mostly exhibited a saturable dose-dependent pattern and increased up to a certain optimal P supply of 2–5 g P/g straw, post which it approached a plateau; only in the no agar-bran culture of P. floridanus a progressive P-dependent increase was found. The time-course of fungal growth exhibited contrasting patterns in the two fungi; being sigmoidal in P. pulmonarius but almost linear in P. floridanus. In P. pulmonarius, the lag growth period (T10) was longer with KH2PO4 than with bran, with different dose-dependent patterns in the two P sources and marginal effect of the agar layer. Relative growth rate (RGR) of P. pulmonarius was higher than that of P. floridanus, with different dose-dependent patterns according to fungal species and presence of agar. In P. pulmonarius, both T10 and RGR attained comparable values of about one day and 0.4 day-1, respectively at 5 mg P/g straw for the different P form × culturing mode combinations.
Keywords
Fungal growth rate; oyster mushroom; Pleurotus spp; organic phosphorus; wheat bran
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