Effects of the treatments by synthetic strigolactone (SL) and SL-enriched biostimulant on W/NUE under water and phosphate deprived conditions

The aim of this study is to investigate on the physiological and agronomic effects caused from the exogenous SL treatment on tomato plants (<em>Solanum lycopersicum L</em>) grown under water and phosphate stress conditions. The experimental proofs, began in 2018, were performed in greenhouses sited in Turin and Carmagnola at University of Turin, DISAFA (Italy). The analysis of the data obtained (only partially completed for the second experimental test) allowed to estimate the W/NUE of each treatment in the different water and nutrient conditions. These preliminary results seem to confirm an active role of the strigolactones as key signal mediator in response to the abiotic stresses. Analogously also the innovative biostimulant SL-enriched proposed by StrigoLab was shown similar positive activity by proposing itself as promising commercial product.本研究旨在探究外源独脚金内酯（Strigolactones, SL）处理对水分与磷酸盐胁迫环境下生长的番茄植株（*Solanum lycopersicum L.*）所产生的生理与农艺效应。本实验自2018年启动，在意大利都灵大学DISAFA学院位于都灵与卡尔马尼奥拉的温室中开展。对所获数据（第二次实验仅完成部分内容）进行分析后，可估算不同水分与养分条件下各处理的W/NUE。这些初步结果似乎证实了独脚金内酯作为非生物胁迫响应关键信号介质的积极作用。同理，StrigoLab公司推出的新型富SL生物刺激剂同样表现出类似的积极活性，有望成为极具应用前景的商业化产品。