Darvas Béla, Gyurcsó Gergő, Takács Eszter, Székács András
Hungarian Society of Ecotoxicology, H-1022 Budapest, Hungary.
Agro-Environmental Research Centre, Institute of Environmental Sciences, Hungarian University of Agriculture and Life Sciences, H-1022 Budapest, Hungary.
Insects. 2022 Feb 17;13(2):206. doi: 10.3390/insects13020206.
A credible risk analysis of maize pollen containing Cry1Ab toxin must include the assessment of () pollen production and its Cry1 toxin content; () distribution of the pollen grains in the surroundings; () pollen-catching capacity of the weeds on field edges; () the lifestyle of protected lepidopteran larvae living on weeds; () Cry1 toxin sensitivity of non-target caterpillars; and () Cry1 toxin resistance of individual non-target populations. The concentration range of 5-4300 ng Cry1Ab toxin/g dry pollen determined in MON 810 pollen batches is too diverse for handling it as a single set in any mathematical modeling. Within the work carried out mainly with the DK-440 BTY cultivar, the seed samples officially received from the variety owner produced significantly different (250-470 vs. 5-15 ng/g) Cry1Ab toxin concentrations in the pollen. L1-L3 larvae were nearly six times more sensitive for Dipel than . Feeding on the back side and in a leaf nest, may be subject to lower pollen exposures. larvae may actively attempt to avoid patches with high pollen contamination. Cry1Ab toxin resistance also partially emerged in populations reared in the Pannonian Biogeographical Region (Hungary).
对含有Cry1Ab毒素的玉米花粉进行可靠的风险分析，必须包括评估：（1）花粉产量及其Cry1毒素含量；（2）花粉粒在周围环境中的分布；（3）田边杂草的花粉捕获能力；（4）生活在杂草上的受保护鳞翅目幼虫的生活习性；（5）非靶标毛虫对Cry1毒素的敏感性；以及（6）单个非靶标种群对Cry1毒素的抗性。在MON 810花粉批次中测定的5 - 4300 ng Cry1Ab毒素/克干花粉的浓度范围差异太大，无法在任何数学模型中将其作为一个单一数据集来处理。在主要针对DK - 440 BTY品种开展的工作中，从品种所有者处正式接收的种子样本在花粉中产生了显著不同（250 - 470对5 - 15 ng/g）的Cry1Ab毒素浓度。L1 - L3幼虫对苏云金芽孢杆菌可湿性粉剂的敏感性比对……几乎高六倍。在叶片背面和叶巢中取食，……可能受到的花粉暴露较低。……幼虫可能会主动尝试避开花粉污染高的区域。在潘诺尼亚生物地理区域（匈牙利）饲养的……种群中也部分出现了对Cry1Ab毒素的抗性。
