| A parasitism gene from a plant-parasitic nematode with function similar to CLAVATA3/ESR (CLE) of Arabidopsis thaliana. | |
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MedLine Citation:
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PMID: 20565649 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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SUMMARY The Hg-SYV46 parasitism gene is expressed exclusively in the dorsal oesophageal gland cell of parasitic stages of the soybean cyst nematode, Heterodera glycines, and it encodes a secretory protein that contains a C-terminal motif of the CLAVATA3/ESR-related (CLE) family in Arabidopsis thaliana. In shoot and floral meristems of Arabidopsis, the stem cells secret CLV3, a founding member of the CLE protein family, that activates the CLV1/CLV2 receptor complex and negatively regulates WUSCHEL expression to restrict the size of the stem cell population. Mis-expression of Hg-SYV46 in Arabidopsis (ecotype Columbia-0) under control of the CaMV35S promoter resulted in a wus-like phenotype including premature termination of the shoot apical meristem and the development of flowers lacking the central gynoecium. The wus-like phenotype observed was similar to reports of over-expression of CLV3 and CLE40 in Arabidopsis, as was down-regulation of WUS expression in the shoot apices of 35S::Hg-SYV46/Col-0 plants. Expression of 35S::Hg-SYV46 in a clv3-1 mutant of Arabidopsis was able partially or fully to rescue the mutant phenotype, probably dependent upon localization and level of transgene expression. A short root phenotype, as reported for over-expression of CLV3, CLE40 and CLE19 in roots, was also produced in primary 35S::Hg-SYV46/Col-0 transgenic plants. The results suggest a functional similarity of HG-SYV46 to plant-secreted CLE ligands that may play a role in the differentiation or division of feeding cells induced in plant roots by parasitic nematodes. |
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Authors:
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Xiaohong Wang; Melissa G Mitchum; Bingli Gao; Chunying Li; Hanane Diab; Thomas J Baum; Richard S Hussey; Eric L Davis |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Molecular plant pathology Volume: 6 ISSN: 1364-3703 ISO Abbreviation: Mol. Plant Pathol. Publication Date: 2005 Mar |
Date Detail:
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Created Date: 2010-06-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100954969 Medline TA: Mol Plant Pathol Country: England |
Other Details:
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Languages: eng Pagination: 187-91 Citation Subset: - |
Affiliation:
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Department of Plant Pathology, USDA-ARS, Cornell University, Ithaca, NY 14853, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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