26Feb 2019

EFFECT OF SPERMIDINE (SPD) ON PHYSIOLOGICAL AND BIOCHEMICAL RESPONSES IN ZEA MAYS L. UNDER UV-B STRESS.

  • Centre for Research and Postgraduate Studies in Botany, AyyaNadarJanakiAmmal College (Autonomous ), Sivakasi, Tamil Nadu, India.
  • Department of Botany with specialization in Plant Biotechnology, The Standard Fireworks Rajaratnam College for Women, Sivakasi, Tamil Nadu, India.
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Ultraviolet-B (UV-B) radiation is one of the most important abiotic stress factors that could influence plant growth, development and productivity. Spermidine (Spd) is an important plant growth regulator involved in a wide variety of physiological processes. The study was carried out to investigate the protective role of exogenous on alleviation of UV-B stress in Zea mays L. Our result showed that UV-B stress significantly decreased the growth parameters, total soluble sugars, aminoacid, proline content, superoxide dismutase (SOD), catalase (CAT), peroxidase activity (PD) and Malondialdehyde content (MDA) in both the seedlings, but the combination of Spd pretreatment and UV-B enhanced the vegetative growth characters such as shoot and root length, shoot and root fresh weights and dry weights, photosynthetic pigment, non photosynthetic pigment composition and total soluble protein, total soluble glucose, free amino acid, SOD, CAT, PD, MDA and NR activities. However, UV-B stress induced positive effects on growth characters and biochemical constituents. Therefore appropriate concentration of Spd could be used as a simple, practical and inexpensive method for modulating the effects of UV-B stress in plants.

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[K.Bavithra, S. Muthulakshmi and K. Lingakumar. (2019); EFFECT OF SPERMIDINE (SPD) ON PHYSIOLOGICAL AND BIOCHEMICAL RESPONSES IN ZEA MAYS L. UNDER UV-B STRESS. Int. J. of Adv. Res. 7 (Feb). 1092-1097] (ISSN 2320-5407). www.journalijar.com

K. Lingakumar
Centre for Research and Postgraduate Studies in Botany, Ayya Nadar Janaki Ammal College (Autonomous ), Sivakasi, Tamil Nadu, India.

DOI:

Article DOI: 10.21474/IJAR01/8586      
DOI URL: https://dx.doi.org/10.21474/IJAR01/8586

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