【摘 要】
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Aldehydes play an important role in atmospheric chemistry and plant direct and indirect defense against environmental stresses.In this study,the emissions of sa
【机 构】
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College of Gardening,Key Laboratory for Genetics and Breeding of Forest Trees and Ornamental Plants
论文部分内容阅读
Aldehydes play an important role in atmospheric chemistry and plant direct and indirect defense against environmental stresses.In this study,the emissions of saturated C6-C10 aldehydes from Populus sirnonii x p.pyramidalis 'Opera 8277' cuttings were examined by using a gas chromatography/mass spectrometry (GC/MS) technique at three levels of light intensity (400,800 and 1 200 μmol.m-2.s-1).A positive correlation between the emissions of these aldehydes and light intensitywas found.Moreover,nordi-hylroguaiaretic acid (NDGA),a special inhibitor of lipoxygenase (LOX),significantly inhibited the emissions of C6-C9 aldehydes at three levels of light intensity,but did not influence the emission of decanal (C10).The emissions of C6-C10 aldehydes in NDGA treated poplar cuttings,exhibited the same positive correlation with light intensity.Thc results indicated that LOX pathway contributes to the emissions of C6-C9 aldehydes,whereas some pathways regulated by light intensity might be a universal mechanism for emissions of C6-C10 aldehydes.
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