探索生物刺激剂在耦合和非耦合鱼菜共生系统中优化生菜栽培的潜力:生长性能、功能特性和代谢组学分析

IF 3.1 3区 农林科学 Q1 HORTICULTURE
Eirini Chandrou, Sofia Faliagka, Anastasia Mourantian, M. Kollaros, Katerina Karamanoli, E. Pechlivani, Nikolaos Katsoulas, E. Levizou
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引用次数: 0

摘要

零排放和低投入的鱼菜共生系统是目前使用的集约型农业和水产养殖生产系统的一种有前途的替代品,可确保高度的环境可持续性。然而,需要新的方法和管理实践来提高其生产率,以达到传统生产系统的产量。在此背景下,本研究首次调查了两种生物刺激剂在鱼菜共生中改善生菜表现的潜力,无论是耦合还是脱钩,并以水耕法作为对照。对植物功能(重点是光合作用过程评估)和整株植物的生长反应进行了综合评估。此外,还确定了叶片的营养状况,并在细胞水平上进行了代谢组学分析,后者也是鱼菜共生研究中的首次。结果表明,耦合鱼菜共生对生菜的生长、功能和新陈代谢造成了限制,这在实验的第 12 天就已经很明显了。与水培对照组相比,在鱼菜共生条件下生长的植株叶片鲜重、钾含量和氮含量明显下降,降幅分别为 80%、60% 和 30%。然而,综合生理和代谢组数据表明,这些植物下调了过程和代谢,以适应莴苣叶片中的低养分水平,而不是遭受损害。施用生物刺激剂并不能显著优化植物的表现,但其中一种似乎能有效改善光化学效率的某些方面。脱钩系统和水培系统在植物功能方面的产量和效率同样很高,生物刺激剂的作用并不明显。我们的结论是,去耦合鱼菜共生系统以较低的化学投入成功实现了与水耕法相当的产量。今后的研究应侧重于研究该系统中的其他生物刺激剂,以进一步提高其性能,同时在循环经济框架内保持其环境效益。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Exploring the Potential of Biostimulants to Optimize Lettuce Cultivation in Coupled and Decoupled Aquaponics Systems: Growth Performance, Functional Characteristics and Metabolomic Analysis
Zero-discharge and low-input aquaponics systems are a promising alternative to the intensive agricultural and aquacultural production systems currently used, ensuring high environmental sustainability. However, new approaches and management practices are needed to increase their productivity to reach the yields of classic production systems. In this context, the present study investigated for the first time the potential of two biostimulants to improve lettuce performance in aquaponics, whether coupled or decoupled, with hydroponics serving as a control. A comprehensive evaluation was conducted to assess the plant functional (focusing on the photosynthetic process evaluation) and growth responses at the whole-plant level. In addition, the nutritional state of the leaves was determined and metabolomic analysis was performed at the cellular level, the latter also for the first time in aquaponics research. The results demonstrated the limitations that coupled aquaponics poses in relation to lettuce growth, function and metabolism, which were already obvious from the 12th day of the experiment. Indicatively, the plants grown under coupled aquaponics exhibited a notable decrease in the leaf fresh weight, potassium content and nitrogen content, with reductions of 80%, 60%, and 30%, respectively, in comparison to the hydroponics control. However, the combined physiological and metabolomic data indicate that these plants down-regulate processes and metabolism to acclimate to low nutrient levels in lettuce leaves rather than experiencing damage. The application of biostimulants did not significantly optimize the plants’ performance, though one of them appeared to be effective in improving some aspects of the photochemical efficiency. The decoupled and hydroponics systems resulted in similarly high yields and efficiency in terms of plant function, without any marked contribution from the biostimulants. We conclude that the decoupled aquaponics system has been successful in achieving yields comparable to those of hydroponics, with lower chemical inputs. Future studies should focus on examining other biostimulants in this system to further improve its performance while maintaining its environmental benefits within a circular economy framework.
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来源期刊
Horticulturae
Horticulturae HORTICULTURE-
CiteScore
3.50
自引率
19.40%
发文量
998
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