Elicitor effects on Penicillium chrysogenum morphology in submerged cultures

Radman, Romeo, Bucke, Christopher and Keshavarz, Tajalli (2004) Elicitor effects on Penicillium chrysogenum morphology in submerged cultures. Biotechnology and Applied Biochemistry, 40 (3). pp. 229-233. ISSN 0885-4513

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Official URL: http://dx.doi.org/10.1042/BA20040062


Changes in morphology and sporulation were investigated in liquid cultures of Penicillium chrysogenum P2 supplemented with carbohydrate oligosaccharides. Sodium alginate and locust-bean (Ceratonia siliqua) gum-derived oligosaccharides were used as elicitors. Spore germination was inhibited by the addition of OG (oligoguluronate) elicitor (30% inhibition when compared with control). Addition of any of the elicitors to stirred-tank cultures increased hyphal-tip numbers, clump area and spore counts. MO (mannan oligosaccharide) had the greatest effect on the parameters studied, followed by OM (oligomannuronate) and OG. Hyphal-tip numbers increased by 19, 29 and 47% with OG, OM and MO respectively. Average clump area in the presence of OG, OM and MO increased by 23, 32 and 59% respectively. A notable increase in spore numbers was observed in all the supplemented stirred-tank reactor cultures, with MO showing the highest enhancement.

Item Type: Article
Additional Information: Online ISSN 1470-8744
Uncontrolled Keywords: Elicitor, liquid culture, morphology, oligosaccharide, Penicillium chrysogenum
Subjects: University of Westminster > Science and Technology > Life Sciences, School of (No longer in use)
Depositing User: Users 4 not found.
Date Deposited: 01 Dec 2005
Last Modified: 11 Dec 2009 11:50
URI: http://westminsterresearch.wmin.ac.uk/id/eprint/388

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