Changes in lipid composition of Blumeria graminis f.sp. tritici conidia produced on wheat leaves treated with heptanoyl salicylic acid

Phytochemistry
Jérôme MuchembledMichel Sancholle

Abstract

Treatment of wheat leaves with heptanoyl salicylic acid (HS) and trehalose at concentrations of 0.1 and 15 g l(-1), prior to fungal inoculation, resulted in 40% and 60% protection, respectively, against powdery mildew. The total lipid composition of Blumeria graminis f.sp. tritici (Bgt) conidia, the causal agent of wheat powdery mildew, was compared when produced on wheat leaves, respectively, untreated and treated with the two elicitors, HS and trehalose. An obvious effect was observed on lipid composition (sterol and fatty acid (FA)) of Bgt conidia produced on wheat leaves treated with HS. A total of 16 FA (C12-C24 saturated and unsaturated) as well as unusual methoxylated Fatty Acids (mFA) (3-methoxydocosanoic and 3-methoxytetracosanoic acids) were detected in the conidia. Medium chain FA were predominant in HS treated conidia (64.65%) while long chain fatty acids constituted the major compounds in untreated conidia (62%). The long chain/medium chain FA ratio decreased from 1.8 in the conidia produced on untreated leaves to 0.5 in the conidia obtained from HS treated leaves. When comparing the sterol composition of Bgt conidia produced on leaves treated with HS versus conidia obtained from untreated ones, very important chan...Continue Reading

References

Apr 1, 1994·Current Opinion in Cell Biology·B VernooijJ Ryals
Sep 13, 2002·Plant Physiology·Helena Porta, Mario Rocha-Sosa
Mar 31, 2005·Phytochemistry·Jérôme MuchembledMichel Sancholle
Aug 5, 2005·Annual Review of Phytopathology·Jyoti Shah

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Citations

May 25, 2010·Trends in Plant Science·Olivier FernandezChristophe Clément
Nov 20, 2014·Frontiers in Plant Science·Sophie TrouvelotMarielle Adrian
Jan 14, 2020·Plant, Cell & Environment·Prasanna KankanalaKirankumar S Mysore
Jul 20, 2018·Frontiers in Plant Science·Chayanika ChalihaEeshan Kalita
Nov 9, 2018·Frontiers in Plant Science·Longming ZhuHan Xing
Jun 16, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Renfeng XueMatthew W Blair
Jan 21, 2022·Physiologia Plantarum·Anuj ChoudharyHarmanjot Kaur

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