Lipid profiles in wheat cultivars resistant and susceptible to tan spot and the effect of disease on the profiles

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Show simple item record Kim, Dong Won 2012-04-13T20:09:01Z 2012-04-13T20:09:01Z 2012-04-13
dc.description.abstract The effects of tan spot on lipid profiles in wheat leaves were quantified by mass spectrometry. Inoculation with Pyrenophora tritici-repentis significantly reduced the amount of many lipids, including the major lipids monogalactosyldiacylglycerol (MGDG) and digalactosyldiacylglycerol (DGDG), in leaves over time. These two lipids accounted for 89% of the mass spectral signal of detected lipids in wheat leaves. Reductions in amounts of lipids were at much higher rates over time for susceptible cultivars compared with resistant cultivars. Furthermore, data show that cultivars resistant to tan spot have different lipid profiles when compared with susceptible cultivars. Resistant cultivars had more MGDG and DGDG than susceptible ones, even in non-inoculated leaves. Using linear models that were fit to data, non-inoculated cultivars with a rating of 1 (highly resistant to tan spot) were calculated to have 66.1% more MGDG and 52.7% more DGDG signal than cultivars with a rating of 9 (highly susceptible). These latter findings are indirect evidence that the amounts of some lipids in wheat leaves may be determining factors in the resistance response of cultivars to tan spot. en_US
dc.language.iso en en_US
dc.publisher Kansas State University en
dc.subject Lipid profile en_US
dc.subject Wheat en_US
dc.subject Tan spot en_US
dc.subject Pyrenophora tritici-repentis en_US
dc.subject Monogalactosyldiacylglycerol (MGDG) en_US
dc.subject Digalactosyldiacylglycerol (DGDG) en_US
dc.title Lipid profiles in wheat cultivars resistant and susceptible to tan spot and the effect of disease on the profiles en_US
dc.type Thesis en_US Master of Science en_US
dc.description.level Masters en_US
dc.description.department Department of Plant Pathology en_US
dc.description.advisor William W. Bockus en_US
dc.subject.umi Plant Pathology (0480) en_US 2012 en_US May en_US

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