title: Evaluation of the Biocontrol Potential ofPurpureocillium lilacinumQLP12 againstVerticillium dahliaein Eggplant.
abstract: A fungus with broad spectrum antifungal activity was isolated from the soil in Qinling Mountain, Shaanxi Province, in China. The fungus was identified asPurpureocillium lilacinumbased on ITS rDNA gene analysis. The strain, coded as QLP12, showed high inhibition activity on fungal mycelium growthin vitro, especially toMucor piriformis,Trichothecium roseum,Rhizoctonia solani,andVerticillium dahliae, and its potential for biocontrol efficacy of eggplant.Verticilliumwilt disease caused byVerticillium dahliaeamong 10 fungal species tested was explored. In greenhouse experiments, QLP12 showed an excellent growth-promoting effect on eggplant seed germination (76.7%), bud growth (79.4%), chlorophyll content (47.83%), root activity (182.02%), and so on. QLP12 can colonize the eggplant interior and also develop in rhizosphere soil. In greenhouse, the incidence ofVerticilliumwilt decreased by 83.82% with pretreated QLP12 fermentation broth in the soil. In the field, QLP12 showed prominent biocontrol effects onVerticilliumwilt by reducing the disease index over the whole growth period, a decline of 40.1%. This study showed that the strain QLP12 is not only an effective biocontrol agent for controllingVerticilliumwilt of eggplant, but also a plant growth-promoting fungus that deserves to be further developed.
authors.affiliation: State Key Laboratory of Crop Stress Biology in Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
authors.forename: Xingjie
authors.identifier: 0000-0001-5654-323X
authors.initials: X
authors.lastname: Lan
authors.affiliation: State Key Laboratory of Crop Stress Biology in Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Crop Stress Biology in Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
authors.forename: Zhaofeng
authors.initials: Z
authors.lastname: Zong
authors.affiliation: State Key Laboratory of Crop Stress Biology in Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
authors.forename: Qing
authors.identifier: 0000-0003-0739-2281
authors.initials: Q
authors.lastname: Ma
authors.affiliation: State Key Laboratory of Crop Stress Biology in Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China.
authors.forename: Yang
authors.identifier: 0000-0001-9614-580X
authors.initials: Y
authors.lastname: Wang
mesh_terms: D002681:China; D018525:Germination / Q000502:physiology; D010572:Pest Control, Biological; D010935:Plant Diseases / Q000382:microbiology; D018517:Plant Roots / Q000382:microbiology; D012988:Soil Microbiology; D032323:Solanum melongena / Q000254:growth & development / Q000382:microbiology*; D013149:Spiroplasma / Q000254:growth & development* / Q000472:pathogenicity; D020172:Verticillium / Q000254:growth & development* / Q000472:pathogenicity