Background: In consideration for the increasing widespread use of genetically modified (GM) crops, one of the important issues for assessment is the effect of GM crops on soil microbial communities Objectives: In this study, T2 chitinase-transgenic cotton (line #57) and its non-transgenic line were investigated for bacterial and fungal dynamics...

Cotton cultivar Coker has been already transformed with recombinant pBI121-chi via Agrobacterium tumefaciens. The T-DNA region of pBI121-chi carries the chitinase (chi ) gene from bean and is under the control of the CaMV35S promoter. T1 and T2 progenies of transgenic cotton containing the chi gene were used in this study.  Polymerase chain reaction (PCR), Southern and Western blotting data con...

Cotton (Gossypium hirsutum L.)  is an important fiber crop in Iran, cultivated on 150000-200000 ha of land.  In Iran the estimated loss due to the insect pest is more than 30%. Traditionally, pests are controlled by 10-12 times spraying per growing season of environmentally harmful chemical insecticides (e.g. endosulfan and/or methosystox). In order to produce transgenic cotton resistance to in...

cotton (gossypium hirsutum l.)  is an important fiber crop in iran, cultivated on 150000-200000 ha of land.  in iran the estimated loss due to the insect pest is more than 30%. traditionally, pests are controlled by 10-12 times spraying per growing season of environmentally harmful chemical insecticides (e.g. endosulfan and/or methosystox). in order to produce transgenic cotton resistance to in...

cotton cultivar coker has been already transformed with recombinant pbi121-chi via agrobacterium tumefaciens. the t-dna region of pbi121-chi carries the chitinase (chi ) gene from bean and is under the control of the camv35s promoter. t1 and t2 progenies of transgenic cotton containing the chi gene were used in this study.  polymerase chain reaction (pcr), southern and western blotting data con...

manipulation of different genes in crop plants to get desirable characters has become an important tool of plant biotechnology. in the current study, cotton variety mnh-786 was modified for its characteristics to show resistance against lepidopteran insects and herbicide by transformation of cry1ac+cry2a and gtgene cloned in a different cassette under 35s promoter. mature embryos of cotton mnh-...

Poplar-cotton agro-ecosystems are the main agricultural planting modes of plain cotton fields in China. Here, we performed a systematic survey of the diversity and population of arthropod communities in four different combination of poplar-cotton eco-systems, including I) non-transgenic poplar and non-transgenic cotton fields; II) non-transgenic poplar and transgenic cotton fields [Bacillus thu...

Transgenic cotton is very effective in controlling targeted pests such as cotton bollworm (Helicoverpa armigera). However, increases in spider mite (Acari: Tetranychidae) populations have been reported in fields of transgenic cotton. The objectives of our laboratory experiments were (i) to determine host plant preference (transgenic or non-transgenic cotton) of T. turkestani females and (ii) to...

Recently, several invasive mealybugs (Hemiptera: Pseudococcidae) have rapidly spread to Asia and have become a serious threat to the production of cotton including transgenic cotton. Thus far, studies have mainly focused on the effects of mealybugs on non-transgenic cotton, without fully considering their effects on transgenic cotton and trophic interactions. Therefore, investigating the potent...

Many developing countries face the decision of whether to approve the testing and commercial use of insecticidal transgenic cotton and the task of developing adequate regulations for its use. In this review, we outline concepts and provide information to assist farmers, regulators and scientists in making decisions concerning this technology. We address seven critical topics: 1) molecular and b...