Indian Journal of Agricultural Research
SCOPUSWeb of Science
  • Year: 2026
  • Volume: 59
  • Issue: 7

Impact of Carbon Dioxide Levels on Biochemical Parameters Associated with Stem Rot Disease in Groundnut

  • Author:
  • J. Vamshi12*, G. Uma Devi1, Hari Kishan Sudini3, D. Gireesha4, K. Karthika Vishnu Priya5, T. Uma Maheswari1, K. Supriya1
  • Total Page Count: 8
  • Page Number: 1149 to 1156

1Professor Jayashankar Telangana State Agricultural University, Hyderabad-500 030, Telangana, India.

2Department of Plant Pathology, Malla Reddy University, Kompally-500 100, Hyderabad, Telangana, India.

3International Crops Research Institute for the Semi-Arid Tropics, Patancheru-502 319, Telangana, India.

4Department of Plant Pathology, School of Agriculture, SR University, Warangal-506 371, Telangana, India.

5Department of Agronomy, School of Agriculture, SR University, Warangal-506 371, Telangana, India.

Corresponding Author: J. Vamshi, Professor Jayashankar Telangana State Agricultural University, Hyderabad-500 030, Telangana, India; Department of Plant Pathology, Malla Reddy University, Kompally-500 100, Hyderabad, Telangana, India. Email: vamshidctr@gmail.com

Abstract

Sclerotium rolfsii is a widespread soil-borne fungal pathogen recognized for causing disease in a wide variety of agricultural and horticultural crops globally. Despite the economic losses attributed to this pathogen, there are limited reports concerning the biochemical alterations in groundnut in response to increased carbon dioxide levels and pathogen interactions.

A pot culture experiment was carried out at ICRISAT during the rabi season 2022–23 in Open Top Chambers (OTC) to assess the biochemical responses of groundnut to climate change and pathogen interactions. The study was carried out at three different carbon dioxide levels (400 ppm, 550 ppm and 700 ppm) using the susceptible groundnut cultivar TMV 2 and the moderately resistant cultivar ICGV-14082.

The levels of total phenols, oxalic acid, ascorbic acid, catalase, peroxidases, polyphenol oxidase, and chlorophyll content index were elevated in groundnut plants infected with stem rot due to increased carbon dioxide levels. The biochemical activity was high at its peak in inoculated plants on 4th and 6th day post-inoculation of the pathogen and gradually declined on 8th and 10th days.

Keywords

Climate change, Defense enzymes, Open top chambers, Sclerotium rolfsii