Early senescence induced by 2-3H-benzoxazolinone (BOA) in Arabidopsis thaliana.
Measurements of chlorophyll a fluorescence, nutrient and trace elements, total protein content and malonyldialdehyde in leaves of Arabidopsis thaliana between 1 and 192 h after treatment with 0, 1 or 3 mM 2-3H-benzoxazolinone (BOA), together with imaging of chlorophyll a fluorescence and of the distributions of hydrogen peroxide and superoxide anion, suggested that the primary phytotoxic action of BOA is the induction of premature senescence, and that oxidative stress is a secondary effect that sets in a day or two later.
Dept. of Plant Biology and Soil Science, Faculty of Biology, University of Vigo Campus Lagoas-Marcosende s/n, 36310 Vigo, Spain. adela@uvigo.es
Adela M
AM
Sánchez-Moreiras
Ana
A
Martínez-Peñalver
Manuel J
MJ
Reigosa
D017360:Arabidopsis / Q000187:drug effects* / Q000502:physiology; D001583:Benzoxazoles / Q000494:pharmacology*; D002734:Chlorophyll / Q000378:metabolism; D000077194:Chlorophyll A; D006861:Hydrogen Peroxide / Q000378:metabolism; D015227:Lipid Peroxidation; D008315:Malondialdehyde / Q000378:metabolism; D018384:Oxidative Stress; D018515:Plant Leaves / Q000187:drug effects / Q000502:physiology*; D013481:Superoxides / Q000378:metabolism
D001583:Benzoxazoles; D013481:Superoxides; D002734:Chlorophyll; C017057:benzoxazolone; D008315:Malondialdehyde; D006861:Hydrogen Peroxide; D000077194:Chlorophyll A