Baseline Susceptibility of Cnaphalocrocis medinalis (Lepidoptera: Pyralidae) to Bacillus thuringiensis Toxins in China

2008 ◽  
Vol 101 (5) ◽  
pp. 1691-1696 ◽  
Author(s):  
L. Z. Han ◽  
P. L. Liu ◽  
M. L. Hou ◽  
Y. F. Peng
Keyword(s):  
Bacillus Thuringiensis ◽  
Cnaphalocrocis Medinalis ◽  
Lepidoptera Pyralidae

Arrested Feeding of the Asiatic Rice Borer (Lepidoptera: Pyralidae) by Bacillus thuringiensis

1989 ◽  
Vol 82 (2) ◽  
pp. 416-419 ◽  
Author(s):  
M. C. Rombach ◽  
R. M. Aguda ◽  
L. Picard ◽  
D. W. Roberts
Keyword(s):  
Bacillus Thuringiensis ◽  
Lepidoptera Pyralidae

scholarly journals Isolation and characterization of Bacillus thuringiensis strains active against Elasmopalpus lignosellus (Zeller, 1848) (Lepidoptera, Pyralidae)

2017 ◽  
Vol 39 (4) ◽  
pp. 417
Author(s):  
Janaina Zorzetti ◽  
Ana Paula Scaramal Ricietto ◽  
Fernanda Aparecida Pires Fazion ◽  
Ana Maria Meneguim ◽  
Pedro Manuel Oliveira Janeiro Neves ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Isolation And Characterization ◽  
Elasmopalpus Lignosellus ◽  
Lepidoptera Pyralidae

Characterization and Induction of Two Cytochrome P450 Genes, CYP6AE28 and CYP6AE30, in Cnaphalocrocis medinalis: Possible Involvement in Metabolism of Rice Allelochemicals

2010 ◽  
Vol 65 (11-12) ◽  
pp. 719-725 ◽  
Author(s):  
Xiaoli Liu ◽  
Jun Chen ◽  
Zhifan Yang
Keyword(s):  
Amino Acid ◽  
Rice Variety ◽  
Amino Acid Identity ◽  
Cnaphalocrocis Medinalis ◽  
Amino Acid Residues ◽  
Acid Identity ◽  
Rice Leaf Folder ◽  
Cytochrome P450 Genes ◽  
Molecular Masses ◽  
Lepidoptera Pyralidae

Two cDNAs specific for P450 genes, CYP6AE28 and CYP6AE30, have been isolated from the rice leaf folder Cnaphalocrocis medinalis Guenée (Lepidoptera: Pyralidae). Both cDNApredicted proteins have 504 amino acid residues in length, but with molecular masses of 60177 Dalton for CYP6AE28 and 60020 Dalton for CYP6AE30, and theoretical pI values of 8.49 for CYP6AE28 and 8.56 for CYP6AE30, respectively. Both putative proteins contain the conserved structural and functional domains characteristic of all CYP6 members. CYP6AE28 and CYP6AE30 show 52% amino acid identity to each other; both of them have 49 - 56% identities with CYP6AE1, Cyp6ae12, and CYP6AE14. Phylogenetic analysis showed that the two P450s are grouped in the lineage containing some of the CYP6AE members, CYP6B P450s and CYP321A1. The transcripts of CYP6AE28 and CYP6AE30 were found to be induced in response to TKM-6, a rice variety with high resistance to C. medinalis. The results suggest that the two P450s may play important roles in adaptation to the host plant rice. This is the first report of P450 genes cloned in C. medinalis

VULNERABILITY OF THE FIR CONEWORM, DIORYCTRIAABIETIVORELLA (GROTE) (LEPIDOPTERA: PYRALIDAE), IN DIFFERENT LARVAL STAGES TO THE HD-1 STRAIN OF BACILLUS THURINGIENSIS

1997 ◽  
Vol 129 (1) ◽  
pp. 197-198 ◽  
Author(s):  
Richard Trudel ◽  
Éric Bauce ◽  
Jean Cabana ◽  
Claude Guertin
Keyword(s):  
Bacillus Thuringiensis ◽  
Insect Pest ◽  
Specific Effect ◽  
Young Tree ◽  
Seed Orchards ◽  
Larval Stages ◽  
Dioryctria Abietivorella ◽  
Lepidoptera Pyralidae ◽  
Natural Stands ◽  
The Impact

The fir coneworm, Dioryctria abietivorella (Grote), is a major insect pest in seed orchards across Canada and the adjoining eastern and western United States. Larvae feed principally on cones, but they can also feed on needles and occasionally on the bark of young tree trunks (Hedlin et al. 1980; Ruth 1980; Martineau 1985). The potential for a population of D. abietivorella to build up in seed orchards may be greater than in natural stands (Hedlin et al. 1980; Ruth et al. 1982). The use of entomopathogen in the management of fir coneworm could be an adequate measure to reduce the impact of this insect. Moreover, Bacillus thuringiensis ssp. kurstaki has a specific effect on Lepidoptera (Aronson et al. 1986; Gill et al. 1992). The purpose of our study was to determine the activity of the HD-1 strain of B. thuringiensis ssp. kurstaki (serotype H-3a:3b) to larvae D. abietivorella. Bioassays were conducted with first-, third-, and fifth-instar larvae of fir coneworm to determine whether or not the insect's vulnerability to B. thuringiensis varies with larval age.

scholarly journals Phenotyping and Genotype × Environment Interaction of Resistance to Leaffolder, Cnaphalocrocis medinalis Guenee (Lepidoptera: Pyralidae) in Rice

2019 ◽  
Vol 10 ◽  
Author(s):  
Padmavathi Chintalapati ◽  
Divya Balakrishnan ◽  
Tripura Venkata Venu Gopal Nammi ◽  
Sumalatha Javvaji ◽  
Sampath Kumar Muthusamy ◽  
...  
Keyword(s):  
Cnaphalocrocis Medinalis ◽  
Environment Interaction ◽  
Genotype Environment Interaction ◽  
Lepidoptera Pyralidae
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