Dual roles for the variable domain in protein trafficking and host-specific recognition of Heterodera glycines CLE effector proteins
Date
2010-09-01
Authors
Wang, Jianying
Lee, Chris
Replogle, Amy
Joshi, Sneha
Korkin, Dmitry
Hussey, Richard
Baum, Thomas
Davis, Eric
Wang, Xiaohong
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Baum, Thomas
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Plant Pathology and Microbiology
The Department of Plant Pathology and Microbiology and the Department of Entomology officially merged as of September 1, 2022. The new department is known as the Department of Plant Pathology, Entomology, and Microbiology (PPEM). The overall mission of the Department is to benefit society through research, teaching, and extension activities that improve pest management and prevent disease. Collectively, the Department consists of about 100 faculty, staff, and students who are engaged in research, teaching, and extension activities that are central to the mission of the College of Agriculture and Life Sciences. The Department possesses state-of-the-art research and teaching facilities in the Advanced Research and Teaching Building and in Science II. In addition, research and extension activities are performed off-campus at the Field Extension Education Laboratory, the Horticulture Station, the Agriculture Engineering/Agronomy Farm, and several Research and Demonstration Farms located around the state. Furthermore, the Department houses the Plant and Insect Diagnostic Clinic, the Iowa Soybean Research Center, the Insect Zoo, and BugGuide. Several USDA-ARS scientists are also affiliated with the Department.
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Plant Pathology and Microbiology
Abstract
- Soybean cyst nematodes (Heterodera glycines) produce secreted effector proteins that function as peptide mimics of plant CLAVATA3/ESR (CLE)-like peptides probably involved in the developmental reprogramming of root cells to form specialized feeding cells called syncytia.
- The site of action and mechanism of delivery of CLE effectors to host plant cells by the nematode, however, have not been established. In this study, immunologic, genetic and biochemical approaches were used to reveal the localization and site of action of H. glycines-secreted CLE proteins in planta.
- We present evidence indicating that the nematode CLE propeptides are delivered to the cytoplasm of syncytial cells, but ultimately function in the apoplast, consistent with their proposed role as ligand mimics of plant CLE peptides. We determined that the nematode 12-amino-acid CLE motif peptide is not sufficient for biological activity in vivo, pointing to an important role for sequences upstream of the CLE motif in function.
- Genetic and biochemical analysis confirmed the requirement of the variable domain in planta for host-specific recognition and revealed a novel role in trafficking cytoplasmically delivered CLEs to the apoplast in order to function as ligand mimics.
Comments
This article is published as Wang, Jianying, Chris Lee, Amy Replogle, Sneha Joshi, Dmitry Korkin, Richard Hussey, Thomas J. Baum, Eric L. Davis, Xiaohong Wang, and Melissa G. Mitchum. "Dual roles for the variable domain in protein trafficking and host‐specific recognition of Heterodera glycines CLE effector proteins." New Phytologist 187, no. 4 (2010): 1003-1017, doi: 10.1111/j.1469-8137.2010.03300.x.