Islam Md Nazrul, Hasanuzzaman Abu Tayeb Mohammad, Zhang Zhan-Feng, Zhang Yi, Liu Tong-Xian
State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F UniversityYangling, China.
Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F UniversityYangling, China.
Front Plant Sci. 2017 Mar 31;8:466. doi: 10.3389/fpls.2017.00466. eCollection 2017.
Tomato () production is seriously hampered by the infestation of the sweetpotato whitefly, MEAM 1 (Middle East-Asia Minor 1). The infestation behavior of the whiteflies could be affected by the quantity of plant released volatile organic compounds (VOCs) related to nitrogen concentrations of the plant. In this study, we determined the infestation behavior of to the tomato plants that produced different levels of VOCs after application of different levels of nitrogen with a wind tunnel and an olfactometer. We also analyzed the VOCs released from nitrogen-treated tomato plants using solid phase microextraction and gas chromatography-mass spectrometry. The results revealed that the production of eight VOCs (β-pinene, (+)-4-carene, α-terpinene, p-cymene, β-phellandrene, α-copaene, β-caryophyllene, and α-humulene) was reduced after the plants were treated with high levels of nitrogen. However, more whiteflies were attracted to the tomato plants treated with high levels of nitrogen than to the plants treated with normal or below normal levels of nitrogen. These results clearly indicated that nitrogen can change the quality and quantity of tomato plant volatile chemicals, which play important roles in host plant selection.
番茄（）的生产受到烟粉虱中东 - 小亚细亚1型（MEAM 1）侵染的严重阻碍。粉虱的侵染行为可能会受到植物释放的与植物氮浓度相关的挥发性有机化合物（VOCs）数量的影响。在本研究中，我们使用风洞和嗅觉仪测定了在施用不同水平氮后产生不同水平VOCs的番茄植株上粉虱的侵染行为。我们还使用固相微萃取和气相色谱 - 质谱联用技术分析了经氮处理的番茄植株释放的VOCs。结果表明，在植株用高水平氮处理后，8种VOCs（β - 蒎烯、（+） - 4 - 蒈烯、α - 萜品烯、对伞花烃、β - 水芹烯、α - 可巴烯、β - 石竹烯和α - 葎草烯）的产量降低。然而，与用正常或低于正常水平氮处理的植株相比，更多的粉虱被高水平氮处理的番茄植株吸引。这些结果清楚地表明，氮可以改变番茄植株挥发性化学物质的质量和数量，而这些挥发性化学物质在寄主植物选择中起着重要作用。
