Nematicidal Isochromane Glycoside from Kigelia pinnata leaves.
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Date
2014
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Publisher
Acta Agriculturae Slovenica. University of Ljubljana, Slovenia
Abstract
Synthetic nematicides such as oxamyl and carbofuran
play significant roles in the management of plant-parasitic
nematodes. However, their negative environmental impacts
have it imperative to search for safer alternatives. As part of
our contribution in the search for bio-nematicides, compounds
from plant extract were screened for possible potent nematicidal agent. A new isochromane carboxylic acid glycoside, isolated
from the leaves of Kigelia pinnata (Lam.) Benth (Bignoniaceae)
was evaluated for its nematicidal activity. The structure of the
proposed compound was characterized by various spectroscopic methods, which included UV, FTIR, 1D-, and 2D-NMR,
FAB-MS, TOF-ESI-MS and TOF-ESI-MS/MS (TANDEM).
The in vitro experiment conducted on the glycoside against
Meloidogyne incognita juveniles and eggs indicated an induced
mortality. Its activity can be compared favourably with oxamyl,
when tested at 0.1 mg/mL concentration. At four hours of observation, no significant difference (P < 0.05) between oxamyl
and the glycoside was observed. The present data sustains that
natural glycoside is a promising oxamyl alternate for controlling nematode-induced plant root knots and may contribute to
integrated pest management.
Description
Nematode Control
Keywords
plant protection; nematodes; Kigelia pinnata; isochromane glycoside; nematicide
Citation
Atolani, O, Fabiyi, O.A and Olatunji, G.A. (2014). Nematicidal Isochromane Glycoside from Kigelia pinnata leaves. Acta Agriculturae Slovenica. 104 (1): 25-31.