Baseline sensitivity of Bipolaris maydis to the novel succinate dehydrogenase inhibitor benzovindiflupyr and its efficacy

Pesticide Biochemistry and Physiology
Yi-Ping HouMing-Guo Zhou

Abstract

Benzovindiflupyr is a novel member of succinate dehydrogenase inhibitor (SDHI) fungicides. The filamentous fungus Bipolaris maydis Nisik. et Miyake was the causal agent of southern corn leaf blight (SCLB). Here, baseline sensitivity of B. maydis to benzovindiflupyr was established by mycelial growth and conidium germination methods using 96 B. maydis isolates collected from various places of Jiangsu Province of China, and EC50 values ranged from 0.0321 to 0.9149 μg/ml with the mean value of 0.3446 (±0.2248) μg/ml for mycelial growth, and 0.1864 to 0.964 μg/ml with the mean value of 0.5060 (±0.2094) μg/ml for conidium germination respectively. Treated with benzovindiflupyr, the distribution of nuclei and septum of hyphae did not change, but hyphae of offshoot and conidial production of B. maydis decreased significantly, the cell membrane permeability increased. The result of transmission electron microscope showed that the cross section of hypha was out of shape, the cell wall became thin and sparse, the cell membrane were distinctly damaged, organelles dissolved and vacuolated, and the cell nearly broke up. The results suggested that benzovindiflupyr had strong activity against mycelial growth and conidial production of B. mayd...Continue Reading

Citations

Jan 1, 2019·PloS One·Nicole Melo CalixtoLourival de Almeida Silva
Oct 2, 2020·International Journal of Molecular Sciences·Xiangyang LiDeyu Hu
Jul 4, 2021·Environmental Science and Pollution Research International·Falin HeRutao Liu

❮ Previous
Next ❯

Related Concepts

Related Feeds

Antifungals (ASM)

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.

Antifungals

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.