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Shi, Z: Plants vs. Caterpillars

Is Trypsin Inhibitor a Plant Defense Against the Larvae of the Forest Tent Caterpillar (Malacosoma disstria)?

von Shi, Zhe / Gélinas, Yves / Emma Despland   (Autor)

Forest tent caterpillars (Malacosoma disstria) are ubiquitous defoliating insects in North America. In Canada, trembling aspen is their favourite host tree, which can produce an inducible protein, trypsin inhibitor (TI), to inhibit trypsin, a major proteolytic enzyme in caterpillars\' midguts. To determine the digestion-inhibiting effect of TI on M. disstria, this study focused on the performance of second instar larvae with different levels of TI on both balanced and low protein diets. Both protein deficiency and higher levels of TI impaired the growth of caterpillars, but the impairing effect of TI only appeared on the caterpillars fed on balanced diet. This study confirmed the digestion-inhibiting function of TI as a defense of aspen against forest tent caterpillars. Also, it suggested that caterpillars were able to regulate their growth under severe protein deficiency, possibly as an adaptation to this defense.

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Produktbeschreibung

Forest tent caterpillars (Malacosoma disstria) are ubiquitous defoliating insects in North America. In Canada, trembling aspen is their favourite host tree, which can produce an inducible protein, trypsin inhibitor (TI), to inhibit trypsin, a major proteolytic enzyme in caterpillars\' midguts. To determine the digestion-inhibiting effect of TI on M. disstria, this study focused on the performance of second instar larvae with different levels of TI on both balanced and low protein diets. Both protein deficiency and higher levels of TI impaired the growth of caterpillars, but the impairing effect of TI only appeared on the caterpillars fed on balanced diet. This study confirmed the digestion-inhibiting function of TI as a defense of aspen against forest tent caterpillars. Also, it suggested that caterpillars were able to regulate their growth under severe protein deficiency, possibly as an adaptation to this defense. 

Autoreninfo

Shi, Zhe
Zhe Shi (Jessie)E-mail: of Science, BiologyNovember 2007Concordia University, Montr‚al, Qu‚becBachelor of Science, Biotechnology 2005College of Life Sciences, Wuhan University, ChinaG‚linas, Yves
Zhe Shi (Jessie)E-mail: of Science, BiologyNovember 2007Concordia University, Montr‚al, Qu‚becBachelor of Science, Biotechnology 2005College of Life Sciences, Wuhan University, ChinaEmma Despland
Zhe Shi (Jessie)E-mail: of Science, BiologyNovember 2007Concordia University, Montr‚al, Qu‚becBachelor of Science, Biotechnology 2005College of Life Sciences, Wuhan University, China  

Mehr vom Verlag:

VDM Verlag

Mehr vom Autor:

Shi, Zhe / Gélinas, Yves / Emma Despland

Produktdetails

Medium: Buch
Format: Kartoniert
Seiten: 88
Sprache: Englisch
Erschienen: Juni 2008
Maße: 220 x 150 mm
Gewicht: 147 g
ISBN-10: 3639034945
ISBN-13: 9783639034943

Bestell-Nr.: 4268227 
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KNOABBVERMERK: 2008 88 S. 220 mm
Einband: Kartoniert
Sprache: Englisch
Beilage(n): Paperback

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