Seed Treatment with Ethanol Extract of Serratia marcescens is Compatible with Trichoderma Isolates for Control of Damping-off of Cucumber Caused by Pythium ultimum

被引：14

作者：

Roberts, Daniel P. ^{[1
]}

Lakshman, Dilip K. ^{[1
,2
]}

McKenna, Laurie F. ^{[1
]}

Emche, Sarah E. ^{[1
]}

Maul, Jude E. ^{[1
]}

Bauchan, Gary ^{[3
]}

机构：

[1] USDA ARS, Sustainable Agr Syst Lab, Henry A Wallace Beltsville Agr Res Ctr, Beltsville, MD 20705 USA

[2] USDA ARS, Florist & Nursery Plants Res Unit, Henry A Wallace Beltsville Agr Res Ctr, Beltsville, MD 20705 USA

[3] USDA ARS, Electron & Confocal Microscopy Unit, Henry A Wallace Beltsville Agr Res Ctr, Beltsville, MD 20705 USA

来源：

PLANT DISEASE | 2016年 / 100卷 / 07期

关键词：

AGROBACTERIUM-MEDIATED TRANSFORMATION; BIOLOGICAL-CONTROL; ENTEROBACTER-CLOACAE; BIOCONTROL AGENTS; FLUORESCENT PSEUDOMONAS; PHYTOPHTHORA-CAPSICI; ANTIFUNGAL ACTIVITY; RHIZOCTONIA-SOLANI; PLANT-DISEASES; ROOT-ROT;

D O I：

10.1094/PDIS-09-15-1039-RE

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Environmentally friendly control measures for soilborne plant pathogens are needed that are effective in different soils when applied alone or as components of an integrated disease control strategy. An ethanol extract of Serratia marcescens N4-5, when applied as a cucumber seed treatment, effectively suppressed damping-off caused by Pythium ultimum in potting mix and in a sandy loam soil. Plant stand associated with this treatment was similar to that of seed treated with the chemical pesticide Thiram in the sandy loam soil. The N4-5 ethanol extract did not consistently provide significant disease control in a loam soil. The N4-5 ethanol extract was compatible with two Trichoderma isolates, not affecting in vitro or in situ colonization of cucumber by these biological control fungi. Control of damping-off of cucumber was never diminished when this ethanol extract was applied as a seed treatment in combination with in-furrow application of the Trichoderma isolates, and disease control was improved in certain instances with these combinations in the loam soil. Data presented here indicate that the N4-5 ethanol extract is compatible with certain beneficial fungi, suggesting that this extract can be used as a component of integrated disease control strategies featuring biological control fungi.

引用

页码：1278 / 1287

页数：10

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