Nishizawa Toru, Nakajima Nobuyoshi, Tamaoki Masanori, Aono Mitsuko, Kubo Akihiro, Saji Hikaru
a Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies , Tsukuba , Japan.
GM Crops Food. 2016 Jan 2;7(1):20-37. doi: 10.1080/21645698.2016.1138196.
Previously, we conducted a roadside survey to reveal the occurrence of genetically modified (GM) oilseed rape along a Japanese roadside (Route 51). In this study, we performed successive and thorough fixed-route monitoring in 5 sections along another road (Route 23). Oilseed rape plants were detected on both sides of the road in each section between autumn 2009 and winter 2013, which included 3 flowering seasons. In four sections, more plants were found on the side of the road leading from the Yokkaichi port than on the opposite side. In the fifth section, the presence of clogged drains on the roadside, where juvenile plants concentrated, caused the opposite distribution: oilseed rape predominantly occurred along the inbound lanes (leading to the Yokkaichi port) in 2010 and 2012. Unlike in our previous survey, glyphosate- or glufosinate-resistant oilseed rape plants were abundant (>75% of analyzed plants over 3 years). Moreover, a few individuals bearing both herbicide resistance traits were also detected in some sections. The spillage of imported seeds may explain the occurrence of oilseed rape on the roadside. The abundance of herbicide-resistant oilseed rape plants may reflect the extent of contamination with GM oilseed rape seed within imports.
此前，我们进行了一项路边调查，以揭示日本一条路边（51号公路）上转基因油菜的出现情况。在本研究中，我们沿着另一条道路（23号公路）的5个路段进行了连续且全面的固定路线监测。在2009年秋季至2013年冬季期间，包括3个花期，每个路段的道路两侧均检测到了油菜植株。在4个路段中，从四日市港口引出的道路一侧发现的植株比另一侧更多。在第5个路段，路边排水管道堵塞，幼苗集中在那里，导致了相反的分布情况：2010年和2012年，油菜主要出现在 inbound 车道（通往四日市港口）沿线。与我们之前的调查不同，抗草甘膦或抗草铵膦的油菜植株数量众多（3年中超过75%的分析植株）。此外，在一些路段还检测到了少数同时具有两种除草剂抗性性状的个体。进口种子的溢出可能解释了路边油菜的出现。抗除草剂油菜植株的大量存在可能反映了进口货物中转基因油菜种子的污染程度。
