Biological Trace Element Research

, Volume 144, Issue 1, pp 1175–1185

Influence of Short-Term Silicon Application on Endogenous Physiohormonal Levels of Oryza sativa L. Under Wounding Stress

  • Yoon-Ha Kim
  • Abdul Latif Khan
  • Muhammad Hamayun
  • Sang Mo Kang
  • Yoon Jung Beom
  • In-Jung Lee
Article

DOI: 10.1007/s12011-011-9047-4

Cite this article as:
Kim, Y., Khan, A.L., Hamayun, M. et al. Biol Trace Elem Res (2011) 144: 1175. doi:10.1007/s12011-011-9047-4

Abstract

The current study was conducted in order to investigate the short-term effects (6, 12, and 24 h) of silicon (Si) on the endogenous hormonal composition of rice (Oryza sativa L. cv. Dongjin-beyo), with and without wounding stress. Si applied in different concentrations (0.5, 1.0, and 2.0 mM) significantly promoted shoot length, plant biomass, and chlorophyll content of rice plants. Plants treated with different concentrations of sole Si for 6, 12, and 24 h had higher endogenous jasmonic acid contents than control. However, a combined application of wounding stress and Si induced a significantly small quantity of endogenous jasmonic acid as compared with control. On the contrary, endogenous salicylic acid level was significantly higher in sole Si-treated plants, while after wounding stress, a similar trend was observed yet again. After 6, 12, and 24 h of Si applications, with and without wounding stress, ethylene levels were significantly lower in comparison to their respective controls. The findings of the present study perpetrate the beneficial role of Si on the growth and development of rice plant by relieving physical injury and stress. Si also affects endogenous jasmonic acid and ethylene levels, while an inverse correlation exists between jasmonic acid and salicylic acid under wounding stress conditions.

Keywords

SiliconJasmonic acidSalicylic acidEthyleneWounding stressRice

Supplementary material

12011_2011_9047_MOESM1_ESM.doc (42 kb)
(DOC 42 kb)

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Yoon-Ha Kim
    • 1
  • Abdul Latif Khan
    • 1
    • 2
  • Muhammad Hamayun
    • 3
  • Sang Mo Kang
    • 1
  • Yoon Jung Beom
    • 4
  • In-Jung Lee
    • 1
  1. 1.School of Applied BiosciencesKyungpook National UniversityDaeguSouth Korea
  2. 2.Kohat University of Science and TechnologyKohatPakistan
  3. 3.Department of BotanyAbdul Wali Khan UniversityMardanPakistan
  4. 4.Laboratory of Applied Entomology and Zoology, Graduate School of HorticultureChiba UniversityChibaJapan