Paoletti Elena, Ferrara Anna Maria, Calatayud Vicent, Cerveró Júlia, Giannetti Fabio, Sanz María José, Manning William J
Institut Plant Protection (IPP), National Council Research (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy.
Environ Pollut. 2009 Mar;157(3):865-70. doi: 10.1016/j.envpol.2008.11.009. Epub 2008 Dec 9.
Ozone-like visible injury was detected on Hibiscus syriacus plants used as ornamental hedges. Weekly spray of the antiozonant ethylenediurea (EDU, 300ppm) confirmed that the injury was induced by ambient ozone. EDU induced a 75% reduction in visible injury. Injury was more severe on the western than on the eastern exposure of the hedge. This factor of variability should be considered in ozone biomonitoring programmes. Seeds were collected and seedlings were artificially exposed to ozone in filtered vs. not-filtered (+30ppb) Open-Top Chambers. The level of exposure inducing visible injury in the OTC seedlings was lower than that in the ambient-grown hedge. The occurrence of visible injury in the OTC confirmed that the ozone sensitivity was heritable and suggested that symptomatic plants of this deciduous shrub population can be successfully used as ozone bioindicators. EDU is recommended as a simple tool for diagnosing ambient ozone visible injury on field vegetation.
在用作观赏树篱的木槿植株上检测到了类似臭氧造成的可见损伤。每周喷施抗臭氧剂乙二脲（EDU，300ppm）证实该损伤是由环境臭氧引起的。EDU使可见损伤减少了75%。树篱西侧的损伤比东侧更严重。在臭氧生物监测项目中应考虑这种变异性因素。收集了种子，并将幼苗在过滤与未过滤（+30ppb）的开顶式气室中人工暴露于臭氧环境。在开顶式气室中诱导幼苗出现可见损伤的暴露水平低于在环境中生长的树篱。开顶式气室中可见损伤的出现证实了臭氧敏感性具有遗传性，并表明这种落叶灌木种群中有症状的植株可成功用作臭氧生物指示物。推荐使用EDU作为诊断田间植被上环境臭氧可见损伤的一种简单工具。
