Expression of a Bacillus thuringiensisdelta-endotoxin cry1Ab gene in Bacillus subtilis and Bacillus licheniformis strains that naturally colonize the phylloplane of tomato plants (Lycopersicon esculentum, Mills)

Gil-Izquierdo, Ángel; Vega, Alex Sáez; Salazar, Marcela; González, Enrique; Meza-Basso, Luís

doi:10.1046/j.1365-2672.2003.01840.x

Cited by 37 publications

(33 citation statements)

References 27 publications

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“…Two newly isolated strains of Btk from Chile prove more toxic to larvae than currently available commercial strains (Niedmann and Meza-Basso 2006). In another study, Cry1Ab toxin expressed by Bacillus species that naturally colonize the phylloplane of tomato plants was as toxic as the natural one and transformed bacteria survived for extended periods of time (45 days) on the leaf surface (Theoduloz et al 2003).…”

Section: Entomopathogensmentioning

confidence: 96%

Biological invasion of European tomato crops by Tuta absoluta: ecology, geographic expansion and prospects for biological control

et al. 2010

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The tomato leafminer Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is a devastating pest of tomato originating from South America. After its initial detection in eastern Spain in 2006, it rapidly invaded various other European countries and spread throughout the Mediterranean basin. If no control measures are taken, then the pest can cause up to 80-100% yield losses in tomato crops in recently invaded areas and may pose a threat to both greenhouse and open-field tomato production. The exceptional speed and extent of T. absoluta invasion have called for studies documenting its biology and ecology, while indicating an urgent need for efficient and sustainable management methods. The development of approaches to manage T. absoluta would be facilitated through a detailed revision of information on this pest in its area of origin. This review combines information on the invasion by T. absoluta, its ecology, and potential management strategies, including data that may help the implementation of efficient biological control programs. These programs, together with a variety of other management tactics, may allow efficient integrated pest management of T. absoluta in Europe and Mediterranean Basin countries.

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Section: Entomopathogensmentioning

confidence: 96%

Biological invasion of European tomato crops by Tuta absoluta: ecology, geographic expansion and prospects for biological control

et al. 2010

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“…Toxins expressed by Bacillus spp. naturally colonize the phylloplane of tomato plants and survive for a period of 45 days on the tomato leaf surface (Theoduloz et al, 2003) that result in mortality on first to fourth larval instars, however, the death variation occurred due to feeding behavior difference (Giustolin et al, 2001;Youssef and Hassan, 2013). The first and second larval instars penetrate directly the leaves without much feeding.…”

Section: The Use Of Microbial Productmentioning

confidence: 99%

Tomato leafminer [(Tuta absoluta Meyrick) (Lepidoptera: Gelechiidae)] and its current ecofriendly management strategies: A review

Aynalem¹

2018

J. Agric. Biotech. Sustain. Dev.

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Continue climatic changes in the world enhance the emergence of invasive agricultural insect pests.Tuta absoluta is one of the most devastating tomato leafminer and it spreads extensively in almost all parts of the world. It is a serious threat for tomato production and it results in highest damage. T. absoluta has fast growth rate with developmental stages of egg, larvae, pupa, and adult and it adapts to different environmental conditions. A larva is the most destructive one that consumes preferably leaves, stems and fruits of the tomato plant by hiding within mesophyll of the plant tissues. Although different environmentally hazardous pesticides are used against T. absoluta, none of the insecticides give full control due to the resistance development. This problem calls an urgent search for eco-friendly alternatives to control this invasive insect. Recent investigations are focused on different environmental friendly approaches that inclusively termed as IPM strategies. These are cultural practices, biopesticides, and biological using parasitoids, predators, microbial cells, microbial products, RNAi, inheritance sterility development in insect and pest resistant plant cultivar production are considered as promising alternatives to control T. absoluta. Therefore, this review briefly describes the current status of these methods used to design suitable and sustainable management strategies against T. absoluta.

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“…With the advent of plant breeding, the genes of bacteria such as Bacillus thuringiensis (Bt) and Bacillus sphaericus, the main bodies were used to confer resistance of plants to insects on a commercial scale (Sharma et al, 2000;Theoduloz et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution of adults and nymphs of stink bug, Edessa meditabunda (Fabricius, 1974) (Hemiptera: Pentatomidae) on soybean Bt and non-Bt

Fonseca¹,

Fernandes²,

Justiniano³

et al. 2017

Afr. J. Agric. Res.

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Knowledge of the dispersion of adults and nymphs of Edessa meditabunda in soybean model is needed to determine the control actions and thus enable proper use of strategies to avoid losses in production. This research aimed to conduct probabilistic analysis of the spatial distribution patterns of adults and nymphs of E. meditabunda in two regions in soybean Bt and non-Bt. For the evaluations, the method of cloth-to-beat was used, where one sample per plot was collected randomly from each experimental area. Evaluations were performed at 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91 and 98 days after emergence. For data analysis, the rates of dispersion (variance/average Morisita index and exponent k Negative Binomial Distribution) and theoretical frequency distributions (Poisson, Binomial and Negative Binomial Positive) at 5% probability were calculated. The peak population of adults and nymphs of E. meditabunda was observed in the reproductive stage of soybean Bt and non-Bt in Dourados and Douradina. From the results obtained, it can be concluded that the Bt technology had the spatial arrangement of adults and nymphs of E. meditabunda, and is set in probabilistic arrangements with negative binomial distribution (aggregate) in the two regions surveyed. In non-Bt soybeans for adults and nymphs of E. meditabunda, spatial arrangements had set in probabilistic arrangements of positive and negative binomial distribution (uniform), as the days after emergence, for the region of Dourados and Douradina.

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Expression of a Bacillus thuringiensisdelta-endotoxin cry1Ab gene in Bacillus subtilis and Bacillus licheniformis strains that naturally colonize the phylloplane of tomato plants (Lycopersicon esculentum, Mills)

Cited by 37 publications

References 27 publications

Biological invasion of European tomato crops by Tuta absoluta: ecology, geographic expansion and prospects for biological control

Biological invasion of European tomato crops by Tuta absoluta: ecology, geographic expansion and prospects for biological control

Tomato leafminer [(Tuta absoluta Meyrick) (Lepidoptera: Gelechiidae)] and its current ecofriendly management strategies: A review

Spatial distribution of adults and nymphs of stink bug, Edessa meditabunda (Fabricius, 1974) (Hemiptera: Pentatomidae) on soybean Bt and non-Bt

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