Article (Scientific journals)
Bacillus subtilis (Bacillales, Bacillaceae) Spores Affect Survival and Population Growth in the Grain Aphid Sitobion avenae (Hemiptera, Aphididae) in Relation to the Presence of the Facultative Bacterial Endosymbiont Regiella insecticola (Enterobacteriales, Enterobacteriaceae)
Álvarez-Lagazzi, Alan P; Cabrera, Nuri; Francis, Frédéric et al.
2021In Journal of Economic Entomology, 114 (5), p. 2043 - 2050
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Bacillus subtilis spores Affect Survival and Population Growth in the Grain Aphid Sitobion avenae (Hemiptera, Aphididae) in Relation to the Presence of the Facultative Bacterial Endosymbiont Regiella insecticola (Enterobacteriales, Enterobacteriaceae).pdf
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Keywords :
artificial diet; biological control; fecundity; survival; Animals; Aphids; Bacillaceae; Bacillales; Bacillus subtilis; Enterobacteriaceae; Population Growth; Spores, Bacterial; Symbiosis; animal; aphid; bacterial spore; population growth; symbiosis
Abstract :
[en] The grain aphid Sitobion avenae (Fabricius) is one of the most important cereal pests, damaging crops through sap sucking and virus transmission. Sitobion avenae harbors the secondary endosymbiont Regiella insecticola, which is highly prevalent in populations in south-central Chile and other regions of the world. In order to develop ecological alternatives for biological control, we studied the effect of applying the spores of a strain of the bacterium Bacillus subtilis on the survival and fecundity of the most prevalent genotype of S. avenae in central Chile. The strain selected was one that in previous studies had shown the ability to outcompete other bacteria. Using clones of this aphid genotype infected and uninfected with R. insecticola, we found that applying B. subtilis spores through artificial diets and spraying on leaves decreased both adult survival and nymph production. The detection of spores within the aphid body was negatively correlated with nymph production and was lower in the presence of R. insecticola when applied in diets. B. subtilis spores applied on leaves reduced the number of aphids, an effect that was stronger on aphids harboring R. insecticola. A possible interaction between endosymbiotic bacteria and bacterial antagonists within the aphid body is discussed. © 2021 The Author(s). Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved.
Disciplines :
Entomology & pest control
Author, co-author :
Álvarez-Lagazzi, Alan P;  Instituto de Ciencias Biológicas, Universidad de Talca, Campus Talca, 3460000, Chile ; Centre for Molecular and Functional Ecology in Agroecosystems, Universidad de Talca, Campus Talca, 3460000, Chile
Cabrera, Nuri;  Instituto de Ciencias Biológicas, Universidad de Talca, Campus Talca, 3460000, Chile ; Centre for Molecular and Functional Ecology in Agroecosystems, Universidad de Talca, Campus Talca, 3460000, Chile
Francis, Frédéric  ;  Université de Liège - ULiège > TERRA Research Centre > Gestion durable des bio-agresseurs
Ramírez, Claudio C;  Instituto de Ciencias Biológicas, Universidad de Talca, Campus Talca, 3460000, Chile ; Centre for Molecular and Functional Ecology in Agroecosystems, Universidad de Talca, Campus Talca, 3460000, Chile
Language :
English
Title :
Bacillus subtilis (Bacillales, Bacillaceae) Spores Affect Survival and Population Growth in the Grain Aphid Sitobion avenae (Hemiptera, Aphididae) in Relation to the Presence of the Facultative Bacterial Endosymbiont Regiella insecticola (Enterobacteriales, Enterobacteriaceae)
Publication date :
31 August 2021
Journal title :
Journal of Economic Entomology
ISSN :
0022-0493
eISSN :
1938-291X
Publisher :
Oxford University Press
Volume :
114
Issue :
5
Pages :
2043 - 2050
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 February 2025

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