期刊
BIOLOGICAL CONTROL
卷 63, 期 2, 页码 121-128出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.biocontrol.2012.06.013
关键词
In vitro growth rate tests; Dual culture assays; Compatibility; Caenorhabditis elegans model system; Egg-parasitic index; Chitinase gene-expression
资金
- DDKKK Innovation Non-profit Inc. (KOBIOCHG) [TECH_09_A4-2009-0124, GOP-1.1.2-07/1-2008-0008]
Eighteen strains of five Trichoderma species (Trichoderma atroviridae. Trichoderma harzianum, Trichoderma rossicum. Trichoderma tomentosum, Trichoderma Wrens) and six strains of four nematode-trapping fungi (Arthrobotrys oligospora. Arthrobotrys tortor, Monacrosporium haptotylum and Monacrosporium cionopagum) were tested in 90 combinations in order to identify the most appropriate partners to control plant-parasitic nematodes. In vitro monoculture growth rate tests, dual confrontation assays and comparison of strain specific egg-parasitic index (EPI) revealed that T. harzianum strains possess the strongest egg-parasitic ability and the best compatibility with M. cionopagum. Because Trichoderma chitinolytic enzyme systems play an important role in egg-parasitism the transcriptional activity of chi18-5 (chit42) and chi18-12 (chit33) of T. harzianum (SZMC 1647) during egg-parasitism were also characterized. The expression patterns of these genes revealed overlapping modes of action and elucidated differences in timing and amplitude of gene induction between the mycoparasitic and egg-parasitic processes. (C) 2012 Elsevier Inc. All rights reserved.
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