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Aufnahme und Abgabe von Chlorimuron‐Ethyl in Wurzelgewebe der Sojabohne ( Glycine max (L.) Merr.)
Author(s) -
NANDIHALLI U. B.,
BHOWMIK P. C.
Publication year - 1991
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/j.1365-3180.1991.tb01769.x
Subject(s) - glycine , efflux , concentration gradient , weed , chemistry , tissue culture , botany , horticulture , biology , chromatography , biochemistry , amino acid , in vitro
Summary: Chlorimuron ethyl uptake into excised soybean root tissue was investigated using 14 C‐labelled herbicide. Chlorimuron ethyl accumulated in the root tissue, reaching a maximum concentration after 2 h and then declining over the next 2 h. The herbicide did not accumulate against a concentration gradient. The tissue concentration was linearly correlated with the external herbicide concentration. The Q 10 between 15 and 25°C was 1.6. Addition of KCN and anoxia reduced uptake. The efflux of 14 C that had accumulated in root tissue segments occurred in two phases: a rapid phase with a T½ value of 6.3 min and a slower phase with a T½ value of 172 min. Chlorimuron ethyl uptake and efflux in excised soybean root tissue closely resembled that previously observed in velvetleaf, a sensitive weed species.