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https://hdl.handle.net/2440/229
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Type: | Journal article |
Title: | An Arabidopsis callose synthase, GSL5, is required for wound and papillary callose formation |
Author: | Jacobs, A. Lipka, V. Burton, R. Panstruga, R. Strizhov, N. Schulze-Lefert, P. Fincher, G. |
Citation: | The Plant Cell, 2003; 15(11):2503-2513 |
Publisher: | Amer Soc Plant Physiologists |
Issue Date: | 2003 |
ISSN: | 1040-4651 1532-298X |
Statement of Responsibility: | Andrew K. Jacobs, Volker Lipka, Rachel A. Burton, Ralph Panstruga, Nicolai Strizhov, Paul Schulze-Lefert and Geoffrey B. Fincher |
Abstract: | Arabidopsis was transformed with double-stranded RNA interference (dsRNAi) constructs designed to silence three putative callose synthase genes: GLUCAN SYNTHASE–LIKE5 (GSL5), GSL6, and GSL11. Both wound callose and papillary callose were absent in lines transformed with GSL5 dsRNAi and in a corresponding sequence-indexed GSL5 T-DNA insertion line but were unaffected in GSL6 and GSL11 dsRNAi lines. These data provide strong genetic evidence that the GSL genes of higher plants encode proteins that are essential for callose formation. Deposition of callosic plugs, or papillae, at sites of fungal penetration is a widely recognized early response of host plants to microbial attack and has been implicated in impeding entry of the fungus. Depletion of callose from papillae in gsl5 plants marginally enhanced the penetration of the grass powdery mildew fungus Blumeria graminis on the nonhost Arabidopsis. Paradoxically, the absence of callose in papillae or haustorial complexes correlated with the effective growth cessation of several normally virulent powdery mildew species and of Peronospora parasitica. |
Keywords: | Fungi Plants, Genetically Modified Arabidopsis Plant Leaves Glucans Glucosyltransferases Schizosaccharomyces pombe Proteins Membrane Proteins DNA, Bacterial RNA, Double-Stranded Signal Transduction Plant Diseases RNA Interference Mutation Stress, Mechanical Immunity, Innate Fungal Structures |
DOI: | 10.1105/tpc.016097 |
Published version: | http://dx.doi.org/10.1105/tpc.016097 |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 6 |
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