Medic Aljaz, Zamljen Tilen, Slatnar Ana, Hudina Metka, Grohar Mariana Cecilia, Veberic Robert
Department of Agronomy, Biotechnical Faculty, University of Ljubljana, SI 1000 Ljubljana, Slovenia.
Foods. 2023 Jan 12;12(2):371. doi: 10.3390/foods12020371.
The consumption of fresh vegetables has been consistently associated with numerous health benefits. However, several factors (such as allelochemicals) influence yield, quality, and metabolites, which inevitably affect the fruit quality and health benefits. The present study was conducted to investigate the yield, quality, metabolic responses, and potential toxicity of grown in juglone-containing soils. For the treatments, pure juglone (100 µM, 1 mM) and walnut leaf extracts (100 µM) in soil concentrations found in walnut orchards were used. A total of 36 phenolic compounds were identified and quantified in fruits, leaves, and roots using a mass spectrometer coupled with high-performance liquid chromatography. We concluded that juglone at a concentration of 100 µM or walnut leaf extract at the same juglone concentration does not affect the yield of , while juglone at a concentration of 1 mM strongly affects it. In the case of juglone, juglone itself was found only in the roots of , but not in the leaves or fruits, so fruits are considered safe for cultivation in juglone-containing soils. However, this could prove problematic if the plants grown are tubers or root vegetables. The data suggest that juglone itself inhibits secondary metabolism in the plant, making it more susceptible to stress and pathogen attacks.
食用新鲜蔬菜一直与诸多健康益处相关联。然而，一些因素（如化感物质）会影响产量、品质和代谢产物，这不可避免地会影响果实品质和健康益处。本研究旨在调查在含胡桃醌的土壤中生长的[植物名称未给出]的产量、品质、代谢反应及潜在毒性。对于处理，使用了胡桃果园土壤中发现的纯胡桃醌（100 µM、1 mM）和核桃叶提取物（100 µM）。使用质谱仪结合高效液相色谱法对果实、叶片和根系中的36种酚类化合物进行了鉴定和定量。我们得出结论，100 µM浓度的胡桃醌或相同胡桃醌浓度的核桃叶提取物不会影响[植物名称未给出]的产量，而1 mM浓度的胡桃醌会强烈影响其产量。就胡桃醌而言，仅在[植物名称未给出]的根系中发现了胡桃醌本身，而在叶片或果实中未发现，因此[植物名称未给出]果实被认为在含胡桃醌的土壤中种植是安全的。然而，如果种植的植物是块茎或根菜类蔬菜，这可能会带来问题。数据表明，胡桃醌本身会抑制植物的次生代谢，使其更容易受到胁迫和病原体攻击。
