Computer and Research-Applications and Limitations

Abstract

Studies on Activation of Systemic Acquired Resistance (SAR) by Heterocyclic Compounds Having Azole Groups in Vigna radiata (L.) Wilczek.

Heterocyclic compounds are known to activate the defense response or resistance in plants. In order to study their effect as activatorsof systemic acquired resistance (SAR), two series of heterocyclic compounds having azole group were used for the present study i.e.,substituted triazolothiadiazoles and thiazolidine thioureas to obtain new compounds with improved biological activities in mung beans(Vigna radiata (L.)Wilczek, is an important pulse crop of India. These compounds could be used as a solution to chemically mediateddisease control both at the farm level as well as chemical fungicides. For this polyphenol content, flavonoid content, PAL activity,peroxidase activity and protein content were determined in control and after chemical treatment in mung beans var. ‘RMG-344’. Theresults indicated significant changes and a distinct role of polyphenols, flavonoids, PAL, peroxidase and proteins in the defense responseof mung beans after treatment with these chemicals

A pigeonpea gene confers resistance to Asian soybean rust in soybean

Asian soybean rust (ASR), caused by the fungus Phakopsora pachyrhizi, is one of the most economically important crop diseases, but is only treatable with fungicides, which are becoming less effective owing to the emergence of fungicide resistance. There are no commercial soybean cultivars with durable resistance to P. pachyrhizi, and although soybean resistance loci have been mapped, no resistance genes have been cloned. We report the cloning of a P. pachyrhizi resistance gene CcRpp1 (Cajanus cajan Resistance against Phakopsora pachyrhizi 1) from pigeonpea (Cajanus cajan) and show that CcRpp1 confers full resistance to P. pachyrhizi in soybean. Our findings show that legume species related to soybean such as pigeonpea, cowpea, common bean and others could provide a valuable and diverse pool of resistance traits for crop improvement