Very-long-chain aldehydes promote in vitro prepenetration processes of Blumeria graminis in a dose- and chain length-dependent manner
© The Authors (2010). Journal compilation © New Phytologist Trust (2010).
| Publié dans: | The New phytologist. - 1979. - 188(2010), 4 vom: 23. Dez., Seite 1039-54 |
|---|---|
| Auteur principal: | |
| Autres auteurs: | , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2010
|
| Accès à la collection: | The New phytologist |
| Sujets: | Journal Article Research Support, Non-U.S. Gov't Aldehydes Fatty Acids Fatty Alcohols Waxes 1-hexacosanol M7SD300NNB |
| Résumé: | © The Authors (2010). Journal compilation © New Phytologist Trust (2010). Surface properties of aerial plant organs have been shown to affect the interaction of fungal plant pathogens and their hosts. Conidial germination and differentiation - the so-called prepenetration processes - of the barley powdery mildew fungus (Blumeria graminis f. sp. hordei) are known to be triggered by n-hexacosanal (C(26)-aldehyde), a minor constituent of barley leaf wax. In order to analyze the differentiation-inducing capabilities of typical aldehyde wax constituents on conidia of wheat and barley powdery mildew, synthetic even-numbered very-long-chain aldehydes (C(22)-C(30)) were assayed, applying an in vitro system based on Formvar(®)/n-hexacosane-coated glass slides. n-Hexacosanal was the most effective aldehyde tested. Germination and differentiation rates of powdery mildew conidia increased with increasing concentrations of very-long-chain aldehydes. Relative to n-hexacosanal, the other aldehyde compounds showed a gradual decrease in germination- and differentiation-inducing capabilities with both decreasing and increasing chain length. In addition to n-hexacosanal, several other ubiquitous very-long-chain aldehyde wax constituents were capable of effectively stimulating B. graminis prepenetration processes in a dose- and chain length-dependent manner. Other wax constituents, such as n-alkanes, primary alcohols (with the exception of n-hexacosanol), fatty acids and alkyl esters, did not affect fungal prepenetration |
|---|---|
| Description: | Date Completed 15.02.2011 Date Revised 18.03.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1469-8137 |
| DOI: | 10.1111/j.1469-8137.2010.03419.x |