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Journal of Botany
Volume 2013 (2013), Article ID 578627, 8 pages
Research Article

Chromium (VI) Induced Biochemical Changes and Gum Content in Cluster Bean (Cyamopsis tetragonoloba L.) at Different Developmental Stages

1Department of Biochemistry, CCS Haryana Agricultural University, Hisar 125001, India
2Department of Biochemistry, G. B. Pant University of Agriculture and Technology, Pantnagar 263145, India
3Department of Genetics and Plant Breeding, CCS Haryana Agricultural University, Hisar 125001, India

Received 31 July 2013; Revised 4 November 2013; Accepted 17 November 2013

Academic Editor: Zed Rengel

Copyright © 2013 Punesh Sangwan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Chromium (Cr) contamination by various industries and other activities is known to inhibit plants growth and development. The present study was conducted using pot experiments in a net house to determine the effect of Cr (VI) on biochemical parameters such as photosynthetic pigments, reducing sugars, and important minerals at different stages of growth in leaves, stem, and roots of clusterbean, a multipurpose fodder crop including a source of guar gum. Guar gum content was estimated in seeds at maturity. All biochemical contents showed a great variation with respect to increase in Cr concentration at different stages of growth. The levels of K, Fe, and Zn decreased, while Cr and Na content increased with increase in Cr concentration. Cr induced toxicity in clusterbean appears at 0.5 mg Cr (VI) Kg−1 soil with maximum inhibitory effect at 2 mg Cr (VI) Kg−1 soil, where impaired sugar supply resulted in decreased guar gum synthesis and altered micronutrient content. The study reveals the possible role of these biochemical parameters in decreasing plant growth and development under heavy metal stress.