Biocontrol Science and Technology, ( ISI ), Volume (24), No (3), Year (2013-11) , Pages (279-290)

Title : ( The nematicidal potential of local Bacillus species against the root-knot nematode infecting greenhouse tomatoes )

Authors: maryam ramezani moghaddam , Esmat Mahdikhani Moghadam , Sareh Baghaee Ravari , Hamid Rouhani ,

Access to full-text not allowed by authors

Citation: BibTeX | EndNote

Bacillus spp. were isolated from Iranian tomato fields and evaluated for their efficacy against root-knot nematodes, Meloidogyne javanica. The 52 sporeforming bacterium isolates were obtained from tomato rhizosphere following heat treatment. Eight isolates were chosen based on their potency in prevention of M. javanica egg hatch and juvenile mortality and production of proteolytic 15 enzymes in Petri plates. Their ability to form biofilms were also determined in pot experiments. According to phenotypic traits and 16s rDNA sequencing, all selected isolates belonged to Bacillus spp. including B. cereus and B. pumilus. Treatment with bacterial culture filtrates in vitro caused juvenile mortality of 72 to 99% after 48 h. After four days, the percentage of egg hatch ranged from 1.6 to 20 59% depending on the isolate. Bacillus pumilus (ToIr-MA) and Bacillus sp. (ToIr- 10) were found to have significant ability to produce extracellular proteases and to form maximum biofilm, considerably reducing the number of egg masses and root gall index (P = 0.05) in comparison to untreated plants. Application of ToIr-MA and ToIr-10 enhanced the fresh and dry weights of shoot and root systems. There 25 was significant enhancement in dry root weight (45 and 50%) and shoot weight (67 and 75%). Results suggest that these two Bacillus spp. have potential as biocontrol agents against root-knot disease in tomato production.

Keywords

Bacillus efficiency; bioassay; Meloidogyne javanica; gall
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

@article{paperid:1038425,
author = {Ramezani Moghaddam, Maryam and Mahdikhani Moghadam, Esmat and Baghaee Ravari, Sareh and Rouhani, Hamid},
title = {The nematicidal potential of local Bacillus species against the root-knot nematode infecting greenhouse tomatoes},
journal = {Biocontrol Science and Technology},
year = {2013},
volume = {24},
number = {3},
month = {November},
issn = {0958-3157},
pages = {279--290},
numpages = {11},
keywords = {Bacillus efficiency; bioassay; Meloidogyne javanica; gall index},
}

[Download]

%0 Journal Article
%T The nematicidal potential of local Bacillus species against the root-knot nematode infecting greenhouse tomatoes
%A Ramezani Moghaddam, Maryam
%A Mahdikhani Moghadam, Esmat
%A Baghaee Ravari, Sareh
%A Rouhani, Hamid
%J Biocontrol Science and Technology
%@ 0958-3157
%D 2013

[Download]