Solid-phase microextraction method for in vivo measurement of allelochemical uptake.

Solid-phase microextraction (SPME) was used to measure allelochemical uptake by tomato plants in vivo. Exogenously applied 1,8-cineole was rapidly taken up by tomato, with the first traces of cineole being detected in the tomato stem just 1-2 h after a single application of 0.5 mM cineole to soil.