Mitigation of salt stress in rice plant at germination stage by using methyl jasmonate

Authors

  • Sakil Mahmud Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh
  • Shayla Sharmin Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh
  • Bishan Lal Das Chowdhury Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh
  • Mohammad Anowar Hossain Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh
  • Muhammad Javidul Haque Bhuiyan Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh

DOI:

https://doi.org/10.3329/ajmbr.v2i1.27572

Keywords:

methyl jasmonate, rice, growth parameter, alpha- amylase

Abstract

To explore the possibility of using methyl jasmonate (MeJA) for alleviation of salt stress, the present study was conducted where six rice varieties (BRRI dhan31, BRRI dhan46, Gota, Kajalsail, Pokkali and Pengek) were grown in non saline (0 dSm-1), saline (12 dSm-1), saline (12 dSm-1) + 10 ?M MeJA and saline (12 dSm-1) + 20 ?M MeJA conditions at germination stage (till the 9 days). MeJA was applied by imbibing seeds in it for 24 hours. To evaluate the effect of MeJA on saline stressed plant at germination stage, change in growth parameters namely germination percentage, shoot and root length, fresh and dry wt. of shoot, fresh and dry wt. of root and biochemical component- activity of alpha-amylase were monitored. Salinity had a minimum effect on final germination percentage (FGP) of rice varieties, but delayed in attaining it. MeJA had least positive effect. Salinity significantly reduced the shoot and root length, fresh and dry weight of all the varieties. MeJA had more decreasing effect in susceptible varieties while increasing effect in moderately tolerant and tolerant. Activity of alpha-amylase in germinated seed varied from 0.051 mg to 0.111 mg mal./mg tissue. At 12dSm-1 salinity, susceptible and moderately tolerant varieties showed significant reduction but tolerant showed significant increase. MeJA intensified the negative effect further in susceptible varieties. In tolerant and moderately tolerant varieties, increment in activity took place and 10 ?M had a better effect over 20 ?M MeJA.

Asian J. Med. Biol. Res. March 2016, 2(1): 74-81

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Author Biography

Sakil Mahmud, Department of Biochemistry and Molecular Biology, Bangladesh Agricultural University, Mymensingh



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Published

2016-05-15

How to Cite

Mahmud, S., Sharmin, S., Chowdhury, B. L. D., Hossain, M. A., & Bhuiyan, M. J. H. (2016). Mitigation of salt stress in rice plant at germination stage by using methyl jasmonate. Asian Journal of Medical and Biological Research, 2(1), 74–81. https://doi.org/10.3329/ajmbr.v2i1.27572

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