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Plant vascular system-feeding Psyllidae (Hemiptera) and Nematoda genomes encode family 12 glycosyl hydrolases

Published online by Cambridge University Press:  15 April 2019

Richard W. Jones Open the ORCID record for Richard W. Jones [Opens in a new window]
Richard W. Jones*
Affiliation:
United States Department of Agriculture-Agricultural Research Service, Genetic Improvement of Fruits and Vegetables Laboratory, 10300 Baltimore Avenue, Beltsville, Maryland, 20705, United States of America
*
Corresponding author: (e-mail: [email protected])
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Abstract

Insect-encoded cellulolytic plant cell wall hydrolases have thus far been found mostly from glycosyl hydrolase family 5, 9, 10, and 45. We now report the first evidence for genomic encoding of family 12 glycosyl hydrolases in vascular feeding Psyllidae (Hemiptera) and Nematoda. The genes were identified in three psyllids (Acanthocasuarina muellerianae Taylor, Pachypsylla venusta (Osten-Sacken), and Diaphorina citri Kuwayama) and a root tip feeding dagger nematode (Xiphinema index Thorne and Allen; Dorylaimida: Longidoridae). While the final gene products were highly similar, the genomic intron structure varied, having a 2 kB intron in P. venusta, a 283 base-pair intron in D. citri, and no intron in X. index. Endoglucanase activity was demonstrated using the D. citri genes in an Agrobacterium Conn (Rhizobiaceae) infiltration-based plant expression system. The presence of family 12 endoglucanases in this set of insects suggests a specific role in facilitating feeding on vascular tissue.

Type
Physiology, Biochemistry, Development, and Genetics–NOTE
Information
The Canadian Entomologist , Volume 151 , Issue 3 , June 2019 , pp. 291 - 297
Creative Commons
This is a work of the U.S. Government and is not subject to copyright protection in the United States.
Copyright
© Entomological Society of Canada 2019

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Footnotes

Subject editor: Mark Rheault

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