Faculty Opinions recommendation of Can biological control benefit from genetically-modified crops? Tritrophic interactions on insect-resistant transgenic plants.

Author(s):  
Niklaus Ammann
2016 ◽  
Vol 89 (4) ◽  
pp. 859-883 ◽  
Author(s):  
Peng Han ◽  
María Concepción Velasco-Hernández ◽  
Ricardo Ramirez-Romero ◽  
Nicolas Desneux

2020 ◽  
Vol 31 (1) ◽  
pp. 14-23
Author(s):  
Marina Mühl

Worldwide, there are many Insect-Resistant Genetically Modified Crops (IR-GMCs) planted with the purpose of controlling their many insect pests. All genetically modified (GM) plants have to pass through a regulatory system before being commercialized. In the case of Argentina, specific information is requested for these particular GM crops. This review will cover all the data required of IR-GMCs in Argentina in relation to insect resistance to the insecticidal products expressed (the most common in Argentina: Bt proteins) as well as the current situation of Bt crops in Argentina. From earliest times, man has used living organisms and their products in order to produce goods and services to meet their basic needs. For instance, man has modified, first unconsciously and then intentionally, the genome of many commodities so as to obtain improved cultivars. Taking the example of maize, its ancestor, the teocintle, is different in appearance (compared to the maize we consume nowadays). The selection process, which has taken place over many years, introduced improvement in many phenotypic characteristics such as the size of the grain. This example illustrates what is considered "Traditional Agrobiotechnology" or 'Traditional Plant Breeding'. The advent of Genetic Engineering and Molecular Biology in the second half of the 20th century has opened the door to "Modern Agrobiotechnology". The increase of agricultural production worldwide is demanded by a constantly increasing global population. As result of this, man has taken advantage of this valued tool so as to produce more in the same amount of land in a sustainable and cost-effective way. Thus different kinds of crops have been genetically engineered around the world with beneficial traits like insect resistance, herbicide tolerance and nutritional improvement. Worldwide, insects are a major cause of crop damage and yield loss, often requiring farmers to make multiple applications of chemical insecticides to control pests. For that reason, the commercial release of IR-GMCs also called Insect-resistant biotech crops has been an important contribution from Modern Agrobiotechnology to increase the global agricultural production. By the end of 2016, the cultivated area under GM crops reached 185.1 million hectares. 53% of that area was planted with IR-GMCs (single and stacked events with tolerance to herbicides). The commercialized genetically engineering crops that have protection against insect damage around the world are cotton, maize, soybean, potato, rice, tomato, eggplant and poplar. Insect-resistant biotech crops provide a number of benefits, such as a reduction in the use of chemical insecticides, improvement in yield, quality and lower production costs compared to the conventional crops.


2001 ◽  
Vol 54 ◽  
pp. 93-100 ◽  
Author(s):  
G. L?vei

The spread of commercial growing of transgenic crops has been very rapid with such crops being grown on 442 million ha in 13 countries in 2000 Most currently grown transgenic plants are either herbicide or insect resistant but research into other possibilities is intense There are potentially significant environmental effects of this technology as well as sharply conflicting claims about its overall impact Among perceived risks this review concentrates on the possibility of damaging ecosystem services (biological control pollination decomposition and soil fertility maintenance) and effects on biodiversity Among the benefits lower environmental contamination by fewer pesticide applications less soil erosion due to less frequent agricultural operations and lower pressure on land resources due to increased yield are listed Both potential risks and benefits need careful documentation and validation for an appropriate assessment of the total ecological effects of this technology


2021 ◽  
Vol 10 (2) ◽  
Author(s):  
Juraj Faragó ◽  
Natália Faragová

Since 1996, when the first genetically modified seeds were planted in field conditions, the commercial growing of genetically modified crops increased to over 134 millions of hectares in 2009 worldwide. Along with the great potential of transgenic plants for future agriculture, considerable concerns on their biosafety have been raised, including their potential impact on soil microbial communities. This review briefly summarizes the important features of soil microorganisms for plant health and ecosystem stability, the numerous methods available for microbial ecologists to study soil microbial diversity, with emphasis on the method of community level physiological profiling (CLPP) based on carbon substrate utilization patterning, and finally the use of CLPP for assessing the effects of transgenic crops on soil microbial communities.


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