Rooting benefits of penthiopyrad

联合国大学的初步试验表明，叶面施用琥珀酸脱氢酶抑制剂（SDHI）杀菌剂戊硫吡拉德对小麦和油菜的生根有促进作用。盆栽试验中，两种植物的根干重均呈剂量依赖性增加。戊硫吡拉德增加根系生物量的作用模式目前尚不清楚，但与SDHI杀菌剂活性无关，因为其他叶面施用的SDHI没有显示出这一点。植物激素生长素是根系生长的关键决定因素，戊硫吡拉德可能通过这种方式发挥作用——在模式物种拟南芥中使用生长素报告器的试点实验表明，在施用后，根系生长素水平降低。本项目有两个主要目标：检查戊硫吡拉德的生根效益和确定作用方式。这将通过结合药理学、遗传学、分子和细胞生物学方法来实现。

Preliminary experiments at UoN suggest that foliar application of the succinate dehydrogenase inhibitor (SDHI) fungicide penthiopyrad confers rooting benefits on wheat and oilseed rape. In both species, root dry weights in pot experiments increased in a dose-dependent manner. The mode of action of penthiopyrad in increasing root biomass is currently unknown but is not linked to SDHI fungicide activity as other foliar applied SDHIs do not show this. The phytohormone auxin is a key determinant of root growth through which penthiopyrad may act - a pilot experiment using auxin reporters in the model species Arabidopsis thaliana suggests that root auxin levels are reduced following application. This project has two main objectives: examination of the rooting benefits of penthiopyrad and determination of the mode of action. This will be achieved using a combination of pharmacological, genetic, molecular and cell biological approaches.