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(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)

机构地区：[1]USDA-ARS, Biological Control of Pests Research Unit, Stoneville, MS, USA [2]Crop Production Systems Research Unit, Stoneville, MS, USA [3]Louisiana Tech University, Ruston, LA, USA

出　　处：《American Journal of Plant Sciences》2021年第3期444-454,共11页美国植物学期刊（英文）

摘　　要：A teleomorph of the fungus </span><i><span style="font-family:Verdana;">Botryosphaeria</span></i><span style="font-family:Verdana;"> <i>rhodina</i></span><span style="font-family:""><span style="font-family:Verdana;"> (Berkeley et Curtis) von Arx, (</span><i><span style="font-family:Verdana;">Br</span></i><span style="font-family:Verdana;">) </span></span><span style="font-family:""><span style="font-family:Verdana;">was evaluated as a bioherbicide for control of giant salvinia (</span><i><span style="font-family:Verdana;">Salvinia</span></i> <i><span style="font-family:Verdana;">molesta</span></i><span style="font-family:Verdana;"> 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+</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">h) in soy</span><span style="font-family:""> </span><span style="font-family:Verdana;">flour-cornmeal liquid media contained in shake flasks or fermenters. A dew period was not required to achieve infection and mortality</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">of inoculated plants. A surfactant (Silwet L-77, a polyalkyleneoxide modified heptamethyl-trisiloxane) incorporated in the fungal formulation was required for </span><i><span style="font-family:Verdana;">Br</span></i><span style="font-family:Verdana;"> 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 replicated</span></span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">field trials, </span><i><span style="font-family:Verdana;">Br</span></i><span style="font-family:Verdana;"> controlled giant salvinia ~95%. </span><i><span style="font-family:Verdana;">Br</span></i><span style="font-family:Verdana;"> also infected other plants, such as common salvinia (</span><i><span style="A teleomorph of the fungus </span><i><span style="font-family:Verdana;">Botryosphaeria</span></i><span style="font-family:Verdana;"> <i>rhodina</i></span><span style="font-family:""><span style="font-family:Verdana;"> (Berkeley et Curtis) von Arx, (</span><i><span style="font-family:Verdana;">Br</span></i><span style="font-family:Verdana;">) </span></span><span style="font-family:""><span style="font-family:Verdana;">was evaluated as a bioherbicide for control of giant salvinia (</span><i><span style="font-family:Verdana;">Salvinia</span></i> <i><span style="font-family:Verdana;">molesta</span></i><span style="font-family:Verdana;"> 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+</span></span><span style="font-family:""> </span><span style="font-family:Verdana;">h) in soy</span><span style="font-family:""> </span><span style="font-family:Verdana;">flour-cornmeal liquid media contained in shake flasks or fermenters. A dew period was not required to achieve infection and mortality</span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">of inoculated plants. A surfactant (Silwet L-77, a polyalkyleneoxide modified heptamethyl-trisiloxane) incorporated in the fungal formulation was required for </span><i><span style="font-family:Verdana;">Br</span></i><span style="font-family:Verdana;"> 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 replicated</span></span><span style="font-family:""> </span><span style="font-family:""><span style="font-family:Verdana;">field trials, </span><i><span style="font-family:Verdana;">Br</span></i><span style="font-family:Verdana;"> controlled giant salvinia ~95%. </span><i><span style="font-family:Verdana;">Br</span></i><span style="font-family:Verdana;"> also infected other plants, such as common salvinia (</span><i><span style="

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

分 类 号：O17[理学—数学]