In this article we will discus about the models for post-transcriptional gene silencing (PTGS). Production of dsRNA from inverted transgene repeats and single copy transgene triggers PTGS. It was proposed that dsRNA would be act as template for an RNA-directed RNA polymerase. Atleast four models have been proposed to explain induction of PTGS. First model is known as threshold model [...]
In this article we will discuss about the nematode resistance in plants. Nematodes predate on large number of plants and inflict considerable damage to economically important crops. Plant nemotades are either living outside the root (ectoparasite) or living inside the root (endoparasite). The endoparasitic nematodes divided into two groups. One is cyst nematodes include, heterodera and globodera and root knot [...]
In this article we will discuss about the insect resistance in plants. Insect control is serious and greatest challenge for agricultural crops. The global scenario of crop damage inflicted by insects is a matter of serious concern. Modern agriculture provides novel solutions to age old problems. Despite the use of wide array of insecticides, extent of damage seems to be [...]