NDLI: The interactive effects of temperature and osmotic potential on the growth of marine isolates of Fusarium solani

Content Provider	Springer Nature Link
Author	Palmero Llamas, D. Cara Gonzalez, M. Iglesias Gonzalez, C. Ruíz Lopez, G. Tello Marquina, J. C.
Copyright Year	2008
Abstract	The mycelial growth of 18 Fusarium solani strains isolated from sea beds of the south-eastern coast of Spain was tested on potato-dextrose-agar adjusted to different osmotic potentials with either KCl or NaCl (−1.50 to −144.54 bars) in 10 °C intervals ranging from 15 to 35 °C. Fungal growth was determined by measuring colony diameter after 4 days of incubation. Mycelial growth was maximal at 25 °C. The quantity and frequency pattern of mycelial growth of F. solani differ significantly at 15 and 25 °C, with maximal growth occurring at the highest water potential tested (−1.50 bars); and at 35 °C, with a maximal mycelial growth at −13.79 bars. The effect of water potential was independent of salt composition. The general growth pattern of F. solani showed declining growth at potentials below −41.79 bars. Fungal growth at 35 °C was always higher than that grow at 15 °C, of all the water potentials tested. Significant differences observed in the response of mycelia to water potential and temperature as main and interactive effects. The viability of cultures was increasingly inhibited as the water potential dropped, but some growth was still observed at −99.56 bars. These findings could indicate that marine strains of F. solani have a physiological mechanism that permits survival in environments with low water potential. The observed differences in viability and the magnitude of growth could indicate that the biological factors governing potential and actual growth are affected by osmotic potential in different ways.
Starting Page	1405
Ending Page	1409
Page Count	5
File Format	PDF
ISSN	13675435
Journal	Journal of Industrial Microbiology and Biotechnology
Volume Number	35
Issue Number	11
e-ISSN	14765535
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-08-20
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Salinity Marine water Conductivity Osmotic pressure Microbiology Bioinformatics Biotechnology Genetic Engineering Inorganic Chemistry Biochemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Bioengineering Applied Microbiology and Biotechnology Biotechnology

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