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image of Israel Journal of Plant Sciences

The levels of endogenous free, bound, and total abscisic acid (ABA) and the changes in dry weight of the mycelium depending on the culture periods were examined in Pleurotus florida (Basidiomycetes) cultured both in shaking and static media. The relationship between ABA production and the growth rate of the fungus was determined. Our findings show that this fungus synthesizes ABA as a secondary metabolite and the maximum total ABA is produced on the 24th day of the growth period in both shaking and static conditions. It was observed that, depending on the culture period, the dry weight of mycelium was enhanced in the primary metabolic phase, while it was constant in the secondary metabolic phase.These results show that there is a negative relationship between growth rate of the fungus and ABA synthesis.

Affiliations: 1: University of Mersin, Art and Science Faculty, Department of Biology ; 2: University of Akdeniz, Art and Science Faculty, Department of Biology ; 3: University of Hacettepe, Science Faculty, Department of Biology


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1. Assante G., Merlini L., Nassini G."()-Abscisic acid, a metabolite of the fungus Cercospora rosicola"Experientia1977Vol 3315561557
2. Beardsell M.F., Cohen D."Relationships between leaf abscisic acid levels and stomatal resistance in maize and sorghum."Plant Physiol.1975Vol 56207
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10. Yeilada ., Topcuolu .F., nyayar A., nyayar S., Flkin K., Bozcuk S."lempe (Vinasse) ieren inkbasyon ortammda bazi beyaz riikl funguslarda absisik asit (ABA) retimi. X. National Congress of Biology, 1820 June, Erzurum, Turkey."1990

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