&lt;b&gt;Isolation and characterization of &lt;i&gt;Bacillus thuringiensis&lt;/i&gt; strains active against &lt;i&gt;Elasmopalpus lignosellus&lt;/i&gt; (Zeller, 1848) (Lepidoptera, Pyralidae)

Zorzetti, Janaina; Ricietto, Ana Paula Scaramal; Fazion, Fernanda Aparecida Pires; Meneguim, Ana M.; Neves, Pedro Manuel Oliveira Janeiro; Vilas-Bôas, Gislayne Trindade

doi:10.4025/actasciagron.v39i4.32707

Cited by 7 publications

(9 citation statements)

References 24 publications

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“…Biological control with Bacillus thuringiensis has shown good results in the control of Spodoptera frugiperda (Machado et al, 2018), Helicoverpa zea (Araújo & Valicente, 2018), Helicoverpa armigera (Santos et al, 2016), Agrotis Ipsilon (Menezes et al, 2011). Recent researches have shown interest in developing biological pesticides and transgenic plants resistant to Elasmopalpus lignosellus larvae due to the insecticide potential found in Bacillus thuringiensis proteins (Zorzetti et al, 2017).…”

Section: Biological Pest Control In Maize Cropmentioning

confidence: 99%

Biological Pest Control in Maize Crop in Brazil: A Review

Bolzan¹,

Follmann²,

Meneghetti³

et al. 2019

JAS

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The areas of maize production harbor a high number of insect species, some of which are considered pests that cause damage to the crop. The methods of pest control have been a cause of concern for the society since the use of chemicals and the environmental problems arising from this practice indicate the need to search for alternatives to control. In this sense, it is necessary to seek an agricultural production system that contemplates environmental sustainability and promotes biodiversity in the Agrosystem, among which the use of biological agents is highlighted. The objective of this research was to update through a bibliographic review the advances in the literature on biological control of maize crop pests. For the development of this article, we used the method of approach the analytical and as procedural method the monographic, through bibliographic research, using specialized doctrines, appropriate to the object of the study and legislations. Because of the observed aspects, it is possible to conclude that the group of natural enemies that act as biological control agents is formed by parasitoids, predators and entomopathogenic microorganisms. The rationalization of the use of chemicals should be associated with the use of biodefensives in integrated pest management. Advances in the legislation of biological products in Brazil are fundamental to give speed to the registration of new alternatives of biological control, aimed at the safety of the environment, human health and that are generated without the exploratory use of biodiversity.

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Section: Biological Pest Control In Maize Cropmentioning

confidence: 99%

Biological Pest Control in Maize Crop in Brazil: A Review

Bolzan¹,

Follmann²,

Meneghetti³

et al. 2019

JAS

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“…Despite the large area under maize cultivation in Brazil, crop yields are among the lowest worldwide, on account of several factors that may contribute to such low productivities (CONAB, 2018;USDA, 2019). One of these factors is a large number of difficult-to-manage insect pests damaging the crop, such as Elasmopalpus lignosellus (Zeller) (Lepidoptera: Pyralidae), which is found near or inside maize stems or even lodged into the soil, becoming a hard target for chemical applications (ZORZETTI et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The inappropriate use of chemical control methods tends to select resistant insect populations, causing harmful effects to the environment, animal health, and high production costs (DALVI et al, 2011;ZORZETTI et al, 2017). Thus, it is necessary to develop alternative control methods such as biological control.…”

Section: Introductionmentioning

confidence: 99%

Compatibility between entomopathogenic nematodes and crop protection products used in maize seed treatment

Magnabosco

Andaló

Faria

2019

SCA

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Chemical insecticides are widely used to control soil pests but not always effective. Entomopathogenic nematodes (NEPs) are found in the soil and depend on host insects to complete their life cycle, and therefore have the potential to control soil pests. Thus, we aimed to investigate the possible joint use of these control methods by assessing the compatibility of two nematodes (Heterorhabditis amazonensis GL and Heterorhabditis amazonensis MC01) with five crop protection products used for maize seed treatment (Maxim®, Cruiser 350 FS®, Fortenza 600 FS®, Avicta 500 FS®, and Amulet®), as well as one neem-based product (NeenMax®). The experimental design was completely randomized with five replicates, six treatments, and one control, in which only distilled water was added to nematode suspension. Each replicate consisted of a test tube containing 1 mL suspension with 2,000 infective juveniles (IJs) and 1 mL of diluted product, following the manufacturer's recommendation. The evaluated parameters were viability, infectivity on Tenebrio molitor larvae and IJs production after exposure to products. Both nematodes were compatible with NeenMax® and Fortenza 600 FS® since they did not differ from the control and were classified as innocuous. Cruiser 350 FS ® was also compatible with the nematodes since the effect value of the product was lower than 30%. Amulet® was classified as slightly noxious, reducing H. amazonensis MC01 and H. amazonensis GL infectivity by 17.5% and 28.5%, and production by 18.2% and 22.3%, respectively. Despite not having reduced viability, Avicta 500 FS® and Maxim® were considered harmful. This is because Avicta 500 FS® and Maxim® reduced productivity by 70.0% and 72.5% and production by 66.1% and 65.4% for H. amazonensis MC01, respectively. For H. amazonensis MC01, both Avicta 500 FS® and Maxim® reduced infectivity by 76.19%, and production by 63.7% and 62.3%, respectively.

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“…One of these factors may be related to the number of difficult-to-control pests that, lesser cornstalk borer, Elasmopalpus lignosellus (ZELLER, 1848) (Lepidoptera: Pyralidae) one of them, since it is sheltered near or inside the stem, or even in shelters of the web that they construct under the ground, and therefore it becomes a target of difficult reach (ZORZETTI et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Potential of transgenic Bt-maize for management of Elasmopalpus lignosellus

Vinha¹,

Silva

Masson

et al. 2019

Rev. Sci. Agr. Paranaensis

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The Lepidoptera insects are responsible for large losses in maize production in Brazil, and stand out those that attack seedlings, such as lesser cornstalk borer, Elasmopalpus lignosellus (Zeller). The objective of this work was to compare the performance of transgenic Bt maize in the control of the E. lignosellus caterpillar in the maize seedlings phase in two trials. In the first trial six treatments were tested: (1) Conventional Non-Bt maize; (2) Conventional Non-Bt maize with insecticide application; (3) transgenic maize expressing the Cry1Ab genes; (4) Cry1F; (5) Cry1A.105 + Cry2Ab2; (6) Cry1A.105 + Cry2Ab2 + Cry1F. The experimental design was randomized blocks, where each treatment was repeated 4 times in plots of 22.5 m2. Ten consecutive plants with third instar larvae of E. lignosellus in the seedling stage were artificially infested. Only the Non-Bt maize (Control) was affected by the E. lignosellus caterpillar, but all the treatments presented tillering, galleries and holes in the stem. In the second assay the genotypes used were seeded on 11/23/2012, and the damages of 3rd instar caterpillars of E. ligosellus (Zeller) were evaluated. The treatments were: (1) Conventional Non-Bt maize (Control); (2) transgenic maize expressing the Cry1F + Cry1A.105 + Cry2Ab2 genes; (3) Cry1A.105 + Cry2Ab2; (4) Vip3Aa20; (5) Vip3Aa20 + Cry1Ab; (6) Cry1F; (7) Cry1Ab + Cry1F. The plots were formed by a line spaced in 0.7 m of 2 m, with 10 plants, with barriers to prevent the exit of artificially infested insects. In the first and second assays, non-Bt maize with or without insecticide application were affected by E. lignosellus caterpillars. However, Bt transgenic maize was not harmed by E. lignosellus caterpillars, except the Vip3Aa20 treatment. Bt transgenic plants were poorly damaged by E. lignosellus in the seedling and leaf stage.

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<b>Isolation and characterization of <i>Bacillus thuringiensis</i> strains active against <i>Elasmopalpus lignosellus</i> (Zeller, 1848) (Lepidoptera, Pyralidae)

Cited by 7 publications

References 24 publications

Biological Pest Control in Maize Crop in Brazil: A Review

Biological Pest Control in Maize Crop in Brazil: A Review

Compatibility between entomopathogenic nematodes and crop protection products used in maize seed treatment

Potential of transgenic Bt-maize for management of Elasmopalpus lignosellus

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