Campus Units
Plant Pathology and Microbiology
Document Type
Article
Publication Version
Published Version
Publication Date
8-1999
Journal or Book Title
Molecular Plant-Microbe Interactions
Volume
12
Issue
8
First Page
663
Last Page
669
DOI
10.1094/MPMI.1999.12.8.663
Abstract
Two β-1,4-endoglucanases (EGases), Hg-eng-1 and Hg-eng-2, were recently cloned from the soybean cyst nematode, Heterodera glycines, and their expression was shown in the subventral esophageal glands of hatched second-stage juveniles (J2). We examined the expression of these EGases in the subventral glands of all post-embryonic life stages of H. glycines by in situ hybridization and immunolocalization. The first detectable accumulation of EGase mRNAs occurred in the subventral glands of unhatched J2. EGase transcripts remained detectable in J2 after hatching and during subsequent root invasion. However, in late parasitic J2 and third-stage juveniles (J3), the percentage of individuals that showed EGase transcripts decreased. In female fourth-stage juveniles and adult females, EGase transcripts were no longer detected in the subventral glands. EGase hybridization signal reappeared in unhatched males coiled within the J3 cuticle, and transcripts were also present in the subventral glands of migratory adult males. Immunofluorescence labeling showed that EGase translation products are most abundantly present in the subventral glands of preparasitic J2, migratory parasitic J2, and adult males. The presence of EGases predominantly in the migratory stages suggests that the enzymes are used by the nematodes to soften the walls of root cells during penetration and intracellular migration.
Copyright Owner
The American Phytopathological Society
Copyright Date
1999
Language
en
File Format
application/pdf
Recommended Citation
de Boer, Jan M.; Yan, Yitang; Wang, Xiaohong; Smant, Geert; Hussey, Richard S.; Davis, Eric L.; and Baum, Thomas J., "Developmental Expression of Secretory β-1,4-endoglucanases in the Subventral Esophageal Glands of Heterodera glycines" (1999). Plant Pathology and Microbiology Publications. 157.
https://lib.dr.iastate.edu/plantpath_pubs/157
Included in
Agricultural Science Commons, Agriculture Commons, Genetics and Genomics Commons, Plant Breeding and Genetics Commons, Plant Pathology Commons
Comments
This article is published as de Boer, Jan M., Yitang Yan, Xiaohong Wang, Geert Smant, Richard S. Hussey, Eric L. Davis, and Thomas J. Baum. "Developmental expression of secretory β-1, 4-endoglucanases in the subventral esophageal glands of Heterodera glycines." Molecular Plant-Microbe Interactions 12, no. 8 (1999): 663-669, doi: 10.1094/MPMI.1999.12.8.663. Posted with permission.