Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Ozone-Induced Chlorophyll Degradation in Populus tremuloides Michx. Foliage

오존처리에 의한 미국 사시나무의 엽록소 분해

  • 신동일 (대구효성카톨릭대학교 식물육종학과)
  • Published : 1996.12.01
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Abstract

The effects of ozone (O$_{3}$) exposures on chlorophyll content of trembling aspen(Populus tremuliodes) rooted cuttings were studied. Ozone was treated with 100 ppb fumigation for 6 hours per day, for three consecutive days per week in open-top chamber. The ozone exposures caused severe foliage damage expressed in necrotic patches and extensive chlorosis. Degradation of chlorophyll was observed mostly in mature leaves. The chlorophyll response to ozone exposure maintained a similar pattern during all experimental seasons and plant materials, Significant genetic variation in O$_{3}$ responses was revealed by differences in sensitivies among clones.

미국사시나무(Populus tremuloides)의 삽목개체에 오존이 엽록소함량의 변화에 미치는 영향을 조사하였다. 오존은 일일 6시간씩, 주 3일간 연속적으로 open-top chamber에서 fumigation 하였다. 오존처리는 괴사반점과 광범위한 chlorosis 등 잎 조직에 심각한 상해를 발생시켰다. 오존처리에 의한 엽록소의 분해는 완전히 성숙한 잎에서 현저하게 관찰되었으나 어린 잎에서는 분해가 거의 보이지 않았다. 오존처리에 대한 엽록소의 반응은 실험 전 기간에 걸쳐 모든 실험대상식물에 있어 일정한 양상을 보였다. 또한 clone 별로 오존 민감성에 따라 엽록소함량의 변화에 상당한 유전적 변이를 보였다.

Keywords

References

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