Poljaković-Pajnik Leopold, Nikolić Nataša, Kovačević Branislav, Vasić Verica, Drekić Milan, Orlović Saša, Kesić Lazar
Institute of Lowland Forestry and Environment, University of Novi Sad, Antona Čehova 13, 21000 Novi Sad, Serbia.
Faculty of Sciences, The Department of Biology and Ecology, University of Novi Sad, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia.
Insects. 2024 Sep 13;15(9):694. doi: 10.3390/insects15090694.
Shrubs are a significant component of urban vegetation found in parks, but they experience various influences from biotic and abiotic agents, among which aphids play an important role. In this work, the effects of aphid colonisation on three shrub species in urban environments were examined. Fourteen parameters were analysed, describing the photosynthetic pigment content and gas exchange to carbon, nitrogen, and hydrogen partitions. While no significant effect of colonisation was found on photosynthetic pigment parameters, the effect was significant on gas exchange parameters. The strongest effect of aphid colonisation achieved was on nitrogen partition and the C/N ratio, parameters that could be suggested for further similar studies. All parameters were classified into two groups according to their principal component analysis, suggesting a correlation between nitrogen and carbon content, the C/N ratio, measured gas exchange parameters, and chlorophyll a content. The ratio between net photosynthesis and dark respiration (A/K) was classified in the second group, suggesting that this parameter provides additional information on the effect of aphid colonisation and deserves special attention in further studies. There were differences in the effect of aphid colonisation on the physiology of the examined shrub species, especially in cases where a decrease in the C/N ratio was achieved in and , while an increase in the same parameter was recorded in .
灌木是城市公园植被的重要组成部分，但它们受到生物和非生物因素的多种影响，其中蚜虫起着重要作用。在这项研究中，研究了蚜虫定殖对城市环境中三种灌木物种的影响。分析了14个参数，描述了光合色素含量以及碳、氮和氢分配的气体交换情况。虽然未发现定殖对光合色素参数有显著影响，但对气体交换参数有显著影响。蚜虫定殖的最强影响体现在氮分配和碳氮比上，这些参数可用于进一步的类似研究。根据主成分分析，所有参数被分为两组，表明氮和碳含量、碳氮比、测量的气体交换参数和叶绿素a含量之间存在相关性。净光合作用与暗呼吸的比率（A/K）被归为第二组，表明该参数提供了有关蚜虫定殖影响的额外信息，在进一步研究中值得特别关注。蚜虫定殖对所研究灌木物种生理的影响存在差异，特别是在[物种1]和[物种2]中碳氮比降低而在[物种3]中该参数升高的情况下。
