The C28 aldehyde octacosanal is a morphogenetically active component involved in host plant recognition and infection structure differentiation in the wheat stem rust fungus |
| |
| Institution: | 1. Department of Plant Biochemistry and Biotechnology, University of Münster, Germany;2. Department of Dermatology, University of Münster, Germany;3. Department of Biology III, RWTH Aachen University, Germany;1. Key Laboratory of Tobacco Chemistry of Yunnan Province, China tobacco yunnan industrial Co., Ltd., Kunming 650231, PR China;2. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, PR China;1. Department of Plant Pathology, University of Georgia, Athens, GA 30602, USA;2. Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA;1. Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, 660-701, South Korea;2. Division of Applied Life Science (BK21 Plus Program), Gyeongsang National University, Jinju, 660-701, South Korea;3. Department of Plant Bioscience, Life and Industry Convergence Research Institute Pusan National University, Miryang, 627-706, South Korea;4. Department of Plant Microbe Interaction, Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, Köln 50829, Germany;5. National Institute of Crop Science, Rural Development Administration, Suwon 441-857, South Korea;1. College of Environment and Resource, Shanxi University, Taiyuan 030006, China;2. State Key Laboratory of Marine Environmental Science (Xiamen University), College of the Environment and Ecology, Xiamen University, Xiamen 361102, China;3. Zhangzhou Institute of Technology, Zhangzhou 363000, China;1. Department of Bioresources, Graduate School, Mie University, 1577 Kurima-Machiya, Tsu 514-8507, Japan;2. Department of Agriculture, Ministry of Agriculture and Cooperatives, 50 Phaholyothin Rd., Ladyao, Chatuchak, Bangkok, Thailand;1. Department of Veterinary Medicine, National Chung Hsing University, Taichung 402, Taiwan;2. Department of Pediatrics, Tungs’ Taichung MetroHarbor Hospital, Taichung 435, Taiwan |
| |
| Abstract: | Using Langmuir–Schäfer technology, a very thin, homogeneous coating of glass surfaces with leaf epicuticular waxes was achieved, allowing the establishment of a bio-assay for morphogenetically active, hydrophobic surface components triggering infection structure differentiation in a rust fungus. A chloroform extract of wheat leaf epicuticular wax coated onto a flat glass surface induced the formation of appressoria, substomatal vesicles, and infection hyphae in about 50% of the germ tubes of Puccinia graminis f.sp. tritici. No induction was seen on a glass surface coated with an inert wax which confered the same hydrophobicity to the surface as the leaf wax. The chemical composition of the leaf epicuticular wax extract was analysed, and the active ingredient was shown to be the C28-aldehyde, octacosanal. The importance of multiple recognition of a ‘host associated surface pattern’ (HASP) integrating both physical and chemical signaling cues for the crucial differentiation of an appressorium upon recognition of a host stoma is discussed. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
