Rooting benefits of penthiopyrad

UON的初步试验表明，在小麦和油菜上叶面喷施琥珀酸脱氢酶抑制剂(SDHI)杀菌剂吡硫磷有利于生根。在两种植物中，盆栽试验中的根干重都以剂量依赖的方式增加。吡硫磷增加根生物量的作用方式目前尚不清楚，但与SDHI杀菌剂活性无关，因为其他叶面喷施的SDHI没有显示出这一点。植物激素生长素是根部生长的关键决定因素，通过这种生长素可以发挥作用--在模式物种拟南芥中使用生长素报告的一项试点实验表明，施药后根生长素水平降低。该项目有两个主要目标：研究吡硫吡格勒的生根效益和确定行动模式。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.