Uptake and distribution of 14C-labeled Fosthiazate in tomato (Lycopersicon esculentum L.)


The uptake of 14C-labeled fosthiazate (0.75 mg.L–1) by tomato plants was studied in solution culture both in the presence or absence of 2, 4 dinitrophenol (DNP, 1 × 10–2 mM), a metabolic inhibitor. Fosthiazate was rapidly taken up by tomato plants and nearly one third of the finally absorbed quantity was taken up in the first half an hour. The translocation of fosthiazate to the shoot part was under metabolic control during the initial stage of uptake. The kinetics of uptake both in the presence and absence of DNP conformed well to the dual phase than a single phase. In the presence of DNP, the uptake capacity (Vmax1) for the initial phase suffered, approximately three fold reduction in comparison to the absence of DNP while Vmax2 for the latter phase was statistically similar to the value observed in the absence of DNP signifying the metabolic dependence of the initial uptake phase. Autoradiography indicated that fosthiazate in the tomato plants tends to accumulate in the roots and at the root-shoot junction. In shoot, it is accumulated in the older leaves especially, near the leaf tip and margins.

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Mukherjee, S. , Kumar, S. , Srivastava, A. and Srivastava, P. (2011) Uptake and distribution of 14C-labeled Fosthiazate in tomato (Lycopersicon esculentum L.). Agricultural Sciences, 2, 308-312. doi: 10.4236/as.2011.23041.

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The authors declare no conflicts of interest.


[1] Koyanagi, T., Imai, O. and Yoshida, K. (1998) Development of a new nematicide, fosthiazate, J. Pestic. Sci. 23, 174-177.
[2] Ingham, R.E., Hamm, P.B., Williams, R.E. and Swanson, W.H. (2000) Control of Meloidogyne chitwoodi in potato with fumigant and nonfumigant nematicides, Suppl. J. Nematol. 32, 556- 558.
[3] Sturz, A.V. and Kimpinski, J. (1999) Effects of fosthiazate and aldicarb on populations of plant growth promoting bacteria, root lesion nematodes and bacteria- feeding nematodes in the root zone of potatoes, Plant Pathol . 48, 26-32.
[4] Horrock, D.L. Applications of liquid scintillation counting, Academic Press, Inc.New York, 1974, pp 331.
[5] John, D.H.O. and Field, G.T.J. A text Book of Photographic Chemistry”, Chapman and Hall Ltd., London, 1963, pp. 29.
[6] Rohilla, R., Singh, U.S.and Singh, R.L. (2001) Mode of action of acibenzolar-S-Methyl against sheath blight of rice, caused by Rhizoctonia solani Kuhn, Pest Management Sci., 58, 63-66.
[7] Crowdy, S.H., Translocation in systemic fungicides in Book Systemic”, Fungicides: 2nd Edn; R. Marsh (ed.)., Longmann Ltd. New York 1977, pp. 92-114.
[8] Hammett, K.R.W., (1968) Root application of systemic fungicides for control of powdery mildews, Pl. Dis. Reptr. 52, 754 760.
[9] Singh, U.S., Kumar, J. and Tripathi, R.K. (1985) Uptake, Translocation, Distribution And Persistence of 14C-Metaxyl in pea (Pisum sativum) Z. Pflanzenkrankh Pflanzenschutz. 92(1),.64-67.

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