Effects of culture filtrates from the nematophagous fungus Verticillium leptobactrum on viability of the root-knot nematode Meloidogyne incognita

被引：27
|
作者：
Regaieg, Hajer [1 ]
Ciancio, Aurelio [2 ]
Raouani, Najet Horrigue [1 ]
Grasso, Gaetano [3 ]
Rosso, Laura [2 ]
机构：
[1] Univ Sousse, Inst Super Agron Chott Mariem, Chott Mariem 4042, Sousse, Tunisia
[2] CNR, Ist Protez Piante, I-70126 Bari, Italy
[3] Tecnopolis Parco Sci & Tecnol, I-70100 Bari, Italy
来源：
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY | 2010年 / 26卷 / 12期
关键词：
Chitin; Egg; Meloidogyne; Nematode; Parasitism; Verticillium; HETERODERA-GLYCINES; BIOLOGICAL-CONTROL; EGGS; FEMALES;
D O I：
10.1007/s11274-010-0397-4
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Filtrates of three isolates of the nematophagous fungus Verticillium leptobactrum were evaluated for their nematicidal activity against the root-knot nematode Meloidogyne incognita. The filtrates inhibited egg hatching, with maximum toxicity observed for isolate HR21 at 50% (v:v) dilution, after 7 days exposure. Filtrates also inactivated second-stage juveniles (J2) at 10-50% dilutions. A scanning electron microscopy study of treated eggs showed severe alterations caused by the filtrate of isolate HR43 on M. incognita eggs, which appeared collapsed and not viable, suggesting the production of chitin-degrading enzymes or other active compounds.
引用
收藏
页码：2285 / 2289
页数：5
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