Current Science

The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader).

If you would like more information about how to print, save, and work with PDFs, Highwire Press provides a helpful Frequently Asked Questions about PDFs.

Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above.

Fullscreen Fullscreen Off


We studied the effect ofaqueous extracts of Azadirachta indica, Calotropis procera, Cleistanthus collinus, Dalbergia sissoo, Datura inoxia and Lantana camara on induction of peroxidase (POD) and catalase (CAT) in cucumber and chilli seedlings. The extract of C. collinus, exhibited a profound effect by inducing maximum activity of POD and CAT in both the crop species. Therefore, we fractionated the extract of C. collinus over silica gel column using 90%, 45% and 0% aqueous methanol. The fraction eluted by 90% methanol (fraction 1) showed bioactivity by inducing POD and CAT activity. Also, the extract of C. collinus and fraction 1 modulated the isozyme profile of both the enzymes. In addition, they also increased H2O2 content in the seedlings, suggesting the triggering of defence mechanism in the seedlings. The findings of the present study suggest the possibility of developing an organic crop protection agent using C. collinus.

Keywords

Bioactives, Crop Protection, Induced Resistance, Isozymes, Plant Extract.
User
Notifications
Font Size