Effect of Tempeature of Incubation on the Growth, Sporulation and Secondary Metabolites Production of Aspergillus umbrosus

Authors

  • Manjulata Sood*

Abstract

Temperature is one of the most important factors influencing growth, sporulation and survival of the microorganisms. On a certain optimum temperature microorganisms will grow normally and will produce antibiotic. In this study the cultures of A. umbrosus (Bainier & Sartory) were grown on the modified Richard’s medium and then incubated at different temperature, i.e.; 15, 20, 25, 26, 30, 35, 40, 45 and 50°C for 12 days at pH 5. In respect of the incubation temperature Aspergillus umbrosus has shown a very narrow range of tolerance. Below 20°C, growth rate was very less with minimum sporulation and light yellow colouration of the medium.  Optimum growth occurred at 30°C with equally good growth at 26°C. This gives a range of 26-30°C for its best growth. It tolerated temperature up to 35°C, beyond which it did not grow at all, there were no growth visualized at 40, 45 and 50°C Sporulation was also good at 26 and 30°C with dark-brown coloration of the medium, indicated the secretion of secondary metabolites. At 35°C the growth and sporulation were negatively affected and the medium colour was also greenish.

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Published

16-04-2011

How to Cite

Sood*, M. (2011). Effect of Tempeature of Incubation on the Growth, Sporulation and Secondary Metabolites Production of Aspergillus umbrosus. Journal of Phytology, 3(4). Retrieved from https://updatepublishing.com/journal/index.php/jp/article/view/2271

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Section

Research Article