[Effect of triadimefon on activity of peroxidase and soluble protein content in detached cucumber cotyledons].
Contents of chlorophyll a, chlorophyll b, soluble protein and proline, as well as the ratio chlorophyll a/b in detached cotyledons of cucumber were distinctly increased by treating with 20 mg/L triadimefon, which suggested that triadimefon can effectively retard the senescence of detached cotyledons in cucumber. Triadimefon could inhibit the increase of peroxide (POD) activity and H2O2 content in different degree. It was found that contents of chlorophyll and protein were markedly negative correlated with the activity of POD and with the content of H2O2 respectively during the senescence of cotyledons. These results indicated triadimefon inhibit the degradation of chlorophyll and protein in cucumber cotyledons through POD- H2O2 enzyme system.
Feng
Zhaozhong
Z
Research Center for Eco-Environmental Sciences, CAS, Beijing 100085, China. zhzfeng@263.net
Wang
Jing
J
Feng
Zongwei
Z
D018548:Cotyledon / Q000201:enzymology*; D018553:Cucumis sativus / Q000201:enzymology*; D005659:Fungicides, Industrial / Q000494:pharmacology*; D009195:Peroxidase / Q000378:metabolism*; D010940:Plant Proteins / Q000032:analysis*; D014230:Triazoles / Q000494:pharmacology*
D005659:Fungicides, Industrial; D010940:Plant Proteins; D014230:Triazoles; C032910:triadimefon; D009195:Peroxidase