The digestive system in Zygentoma as an insect model for high cellulase activity

PloS One
Ratnasri PothulaJuan Luis Jurat-Fuentes

Abstract

The digestive system of selected phytophagous insects has been examined as a potential prospecting resource for identification of novel cellulolytic enzymes with potential industrial applications. In contrast to other model species, however, limited detailed information is available that characterizes cellulolytic activity and systems in basal hexapod groups. As part of a screening effort to identify insects with highly active cellulolytic systems, we have for the first time, identified species of Zygentoma that displayed the highest relative cellulase activity levels when compared to all other tested insect groups under the experimental conditions, including model species for cellulolytic systems such as termite and cockroach species in Rhinotermitidae (formerly Isoptera) and Cryptocercidae (formerly Blattodea). The goal of the present study was to provide a morphohistological characterization of cellulose digestion and to identify highly active cellulase enzymes present in digestive fluids of Zygentoma species. Morphohistological characterization supported no relevant differences in the digestive system of firebrat (Thermobia domestica) and the gray silverfish (Ctenolepisma longicaudata). Quantitative and qualitative cellulas...Continue Reading

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Datasets Mentioned

BETA
SRX4721443
GHEH00000000
AAF80584.1
AAK12339.1

Methods Mentioned

BETA
dissections
electrophoresis
size-exclusion chromatography
size exclusion purification
deamidation

Software Mentioned

Proteome
SeqMan NGen
DNASTAR
Zygentoma
Blast2Go
SAS
Gen5
Mascot

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