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首页> 外文期刊>Chemosphere >Synergism and antagonisms between nutrients induced by copper toxicity in grapevine rootstocks: Monocropping vs. intercropping
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Synergism and antagonisms between nutrients induced by copper toxicity in grapevine rootstocks: Monocropping vs. intercropping

机译：葡萄砧木中铜毒性诱导的养分之间的协同作用和拮抗作用：单作与间作

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The long-term use of Cu-containing fungicides contaminates vineyards soils, which can induce Cu toxicity and nutrient imbalances in several plant species. The aim of this work was to evaluate the effect of Cu toxicity on two grapevine rootstocks, Fercal and 196.17, and to elucidate if intercropping with oat can alleviate grapevine Cu toxicity. Plants were hydroponically-cultivated and treated with different Cu concentrations. At harvest the biomass accumulation, the SPAD index and the symplastic and apoplastic root and leaves ionome were measured to evaluate possible synergistic and/or antagonistic effects on other micro- and macronutrients. The root exudation analysis was correlated with genes expression (VvPEZ-like), whereas PCA analysis performed on the grapevine and oat ionome revealed that both mono- and intercropped 196.17 rootstock display a positive effect on Zn and Mn in the root tissues at high Cu concentrations. An increase of Zn and Mn in roots was also reported for the intercropped Fercal rootstock at high Cu concentrations while an antagonistic relation was reported for root Zn concentration in the monocropped Fercal rootstock. Our results showed that grapevine and oat compete for nutrient uptake and that this phenomenon can possibly alleviate grapevine Cu toxicity. However, Fercal rootstock is able to take advantage from oat, while 196.17 is disadvantaged by the intercropping system. Even though intercropping system seems to be a valuable tool to counteract grapevine Cu toxicity, the application of this agricultural practice has shown to be species dependent and should be evaluated for each rootstock. (C) 2018 Elsevier Ltd. All rights reserved.
机译：长期使用含铜杀真菌剂会污染葡萄园土壤，从而导致几种植物中的铜毒害和营养失衡。这项工作的目的是评估铜毒性对两种葡萄砧木Fercal和196.17的影响，并阐明与燕麦间作是否可以减轻葡萄对铜的毒性。将植物水培培养并用不同的Cu浓度处理。在收获时，测量生物量积累，测量SPAD指数以及共生和外生根与叶离子组，以评估对其他微量元素和大量营养素可能的协同和/或拮抗作用。根系分泌物分析与基因表达（VvPEZ样）相关，而对葡萄和燕麦离子组进行的PCA分析表明，在高Cu浓度下，单作和间作的196.17砧木均对根组织中的Zn和Mn表现出积极作用。在高铜浓度下，间作的Fercal砧木根系中锌和Mn的增加也被报道，而在单作的Fercal砧木中，根系Zn浓度呈拮抗关系。我们的结果表明，葡萄和燕麦争夺养分吸收，并且这种现象可能减轻葡萄对铜的毒性。但是，Fercal砧木可以利用燕麦，而间作系统不利于196.17。尽管间作系统似乎是抵消葡萄藤对铜的毒性的一种有价值的工具，但这种农业实践的应用已显示出取决于物种，应针对每种砧木进行评估。 （C）2018 Elsevier Ltd.保留所有权利。

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