Title: Effects of Streptomycin Treatment on Chlorophyll Fluorescence Parameters and Xanthophyll De-epoxidation Level in Maize Leaves
Abstract: Chlorophyll fluorescence analysis technique and HPLC system were used to investigate changes of thermal dissipation through xanthophyll cycle under high irradiance and xanthophyll cycle components in streptomycin(SM) treated maize leaves. In the presence of SM, the maximum PSⅡ quantum yield ( F v/ F m) and electron transport rate (ETR) of maize leaves decreased more significantly under high light compared to that in control. Non photochemical quenching (NPQ) and de epoxidation level of xanthophyll cycle components in maize leaves were enhanced by SM treatment. However,'high energy'quenching ( q E), a major components of NPQ declined gradually in SM poisoned maize leaves subjected to strong irradiance. It has been suggested that the decline of thermal dissipation through xanthophyll cycle is mainly due to decrease in electron transport rate by SM treatment in maize leaves.
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
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Cited By Count: 1
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