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

It was shown for the first time that activation of plant defence reactions with heptanoyl salicylic acid (HS) could affect the qualitative and quantitative total lipid (sterol and fatty acid) composition of Bgt conidia. 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. The 24-methylsterols/24-ethylsterols ratio was reduced by ninefold in the conidia obtained from treated leaves.