INRES Horticultural Science, University of Bonn, Auf dem Huegel 6, 53121, Bonn, Germany.
INRES Horticultural Science, University of Bonn, Auf dem Huegel 6, 53121, Bonn, Germany.
Plant Physiol Biochem. 2020 Oct;155:888-897. doi: 10.1016/j.plaphy.2020.08.035. Epub 2020 Aug 26.
In tomato production, the accruing green biomass shows promising potential as source of health-promoting compounds, such as rutin and solanesol, that are of high interest due to their medicinal properties. Naturally, they accumulate in plants growing in suboptimal growing conditions, e.g. influenced by biotic and abiotic stressors. With the aim to evaluate the potential use of tomato residues as source, we analyzed both leaf metabolites during a complete cultivation cycle, while applying single and combined stresses practically realized in greenhouse production. In the late season, contents of both metabolites were significantly enhanced by nutrient deficit in combination with 2 °C colder nights for 4 weeks and prolonged for in total 9 weeks. Particularly, higher solanesol contents were achieved by salt stress and elevated temperature after one week, even stronger when combined with drought. At harvest, stressed plants consist of less green biomass reducing the overall economic potential. However, practicable abiotic stresses should be considered as potential tool to induce the accumulation of beneficial compounds. Extracting profitable metabolites from the green biomass of the model crop tomato supports the overall goal to promote sustainable approaches in horticultural production.
在番茄生产中，不断增加的绿色生物量显示出作为具有保健作用化合物（如芦丁和茄呢醇）的潜在来源的巨大潜力，这些化合物因其药用特性而备受关注。它们通常在植物生长条件不佳时积累，例如受到生物和非生物胁迫的影响。为了评估番茄残渣作为来源的潜力，我们分析了整个栽培周期中叶片代谢物，同时应用了在温室生产中实际存在的单一和复合胁迫。在后期，4 周内每周夜间降温 2°C 并持续 9 周的营养缺乏与延长干旱相结合，显著提高了这两种代谢物的含量。特别是，盐分胁迫和 1 周后温度升高会导致茄呢醇含量更高，与干旱结合时甚至更高。收获时，受胁迫的植物绿色生物量减少，降低了整体经济潜力。然而，实际的非生物胁迫可以被视为诱导有益化合物积累的潜在工具。从模式作物番茄的绿色生物量中提取有利的代谢物，支持了在园艺生产中促进可持续方法的总体目标。
