Host Range and Virulence of a Fungal Pathogen for Control of Giant Salvinia (<i>Salvinia molesta</i>)

作     者：Clyde D. Boyette Robert E. Hoagland Lawrence R. Higgenbotham H. Lynn Walker James A. Young Kenneth C. Stetina Clyde D. Boyette;Robert E. Hoagland;Lawrence R. Higgenbotham;H. Lynn Walker;James A. Young;Kenneth C. Stetina

作者机构：USDA-ARS Biological Control of Pests Research Unit Stoneville MS USA Crop Production Systems Research Unit Stoneville MS USA Louisiana Tech University Ruston LA USA 

出 版 物：《American Journal of Plant Sciences》 (美国植物学期刊（英文）)

年 卷 期：2021年第12卷第3期

页      面：444-454页

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

主　　题：Biological Control Botryosphaeria rhodina (Berkeley et Curtis) Von Arx Fungal Phytopathogen Salvinia molesta D.S. Mitchell Aquatic Weed 

摘      要：A teleomorph of the fungus Botryosphaeria rhodina (Berkeley et Curtis) von Arx, (Br) was evaluated as a bioherbicide for control of giant salvinia (Salvinia molesta D.S. Mitchell) under greenhouse conditions and in small-scale field trials. We found that fungal mycelium was highly infective and could be rapidly produced (48+h) in soyflour-cornmeal liquid media contained in shake flasks or fermenters. A dew period was not required to achieve infection and mortalityof inoculated plants. A surfactant (Silwet L-77, a polyalkyleneoxide modified heptamethyl-trisiloxane) incorporated in the fungal formulation was required for Br to infect and kill plants. Infection and mortality occurred rapidly (within 48 h after treatment), and re-growth of treated plants did not occur. In replicatedfield trials, Br controlled giant salvinia ~95%. Br also infected other plants,