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Ozone Sensitivity of Physiological Indicators for Stress Evaluation in Four Families of Quercus aliena Blume

Kim, D.H., Korea Forest Research Institute, Suwon, Republic of Korea ; Han, S.H., Korea Forest Research Institute, Suwon, Republic of Korea ; Lee, J.C., Korea Forest Research Institute, Suwon, Republic of Korea

Journal of Korean Forestry Society, 2010-12, Vol.99 (6)

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  • Título:
    Ozone Sensitivity of Physiological Indicators for Stress Evaluation in Four Families of Quercus aliena Blume
  • Autor: Kim, D.H., Korea Forest Research Institute, Suwon, Republic of Korea ; Han, S.H., Korea Forest Research Institute, Suwon, Republic of Korea ; Lee, J.C., Korea Forest Research Institute, Suwon, Republic of Korea
  • Assuntos: OZONE ; ozone tolerance ; OZONO ; photosynthetic parameter ; physiological indicator ; Quercus aliena
  • É parte de: Journal of Korean Forestry Society, 2010-12, Vol.99 (6)
  • Notas: 2011004586
    K01
  • Descrição: Ozone sensitivity of physiological indicators and the difference of ozone tolerance on 4 families of Quercus aliena seedlings were investigated on the basis of the standardized physiological indicators. Photosynthetic parameters, photosynthetic pigment and malondialdehyde (MDA) content, and antioxidative enzyme activities were measured or analyzed from the leaves of Q. aliena seedlings at the end of ozone fumigation, and ozone tolerance indices among 4 families were calculated with the standardized physiological parameters. After ozone treatment, the reduction of carboxylation efficiency was observed in the leaves of four families, and their reduction were ranged from -24.1% to -56.9% of control seedlings. Photosynthetic pigment content differed significantly among 4 families and treatments. The reduction of total chlorophyll content showed the highest in family SU4 (-40.6%) and the lowest family US2 (-18.8%). Ascorbate-peroxidase (APX) activity showed significant difference among families and treatments, and increased as compared with control in three families, except for family US2. On the basis of the physiological indices, ozone tolerance of four families was ranked in the order of US1 greater than SU4 greater than US2 greater than SU1. In conclusion, photosynthetic parameters, pigment content and APX activity were recommended as appropriate indicators to assess the tolerance against ozone stress of Q. aliena.
  • Idioma: Coreano
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