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Phytotoxic effects of Cu, Zn, Cd and Pb on in vitro regeneration and concomitant protein changes in Holarrhena antidysenterica

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Biologia Plantarum

Abstract

The nodal explants of in vitro shoots of Holarrhena antidysenterica L. were cultured on Murashige and Skoog's (MS) medium augmented with 15 μM N6-benzyladenine (BA) alone (control) or supplemented with different concentrations (1, 5, 10 and 20 mg dm−3) of CdCl2, CuSO4, Pb(NO3)2 and ZnSO4. The maximum morphogenic response in terms of average shoot number (4.95 ± 0.17) was seen in control. ZnSO4 proved to be less inhibitory in comparison to CuSO4, Pb(NO3)2 and CdCl2. None of the explants cultured on CdCl2 containing medium induced multiple shoots. Maximum protein content [3.80 ± 0.04 mg g−1(f.m.)] was observed in control and slightly less [3.50 ± 0.02 mg g−1(f.m.)] in tissues exposed to 1 mg dm−3 of CuSO4 and minimum [1.00 ± 0.02 mg g−1(f.m.)] in Zn treated (20 mg dm−3) explants. SDS-PAGE analysis of the treated tissues revealed that two new polypeptides (29 and 20 kDa) in response to Cu and Zn treatment, respectively, have been synthesized.

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Abbreviations

BA:

N6-benzyladenine

PAGE:

polyacrylamide gel electrophoresis

SDS:

sodiumdodecylsulphate

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Authors and Affiliations

  1. Department of Botany, University of Delhi, Delhi, 110007, India

    V. Agrawal & K. Sharma

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  1. V. Agrawal
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  2. K. Sharma
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Correspondence to V. Agrawal.

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Agrawal, V., Sharma, K. Phytotoxic effects of Cu, Zn, Cd and Pb on in vitro regeneration and concomitant protein changes in Holarrhena antidysenterica . Biol Plant 50, 307–310 (2006). https://doi.org/10.1007/s10535-006-0027-z

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  • DOI: https://doi.org/10.1007/s10535-006-0027-z

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