생명과학회지 (Journal of Life Science)

  • 제27권2호
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  • Pages.241-246
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  • 2017
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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식물에서 기공 형태에 대한 오해와 진실

Misconceptions and Truths of Morphological Characteristics in Plant Stomata

  • 김대재 (충북대학교 생물교육과) ;
  • 이준상 (충북대학교 생물교육과)
  • Kim, Dae Jae (Department of Biology Education, Chungbuk National University) ;
  • Lee, Joon Sang (Department of Biology Education, Chungbuk National University)
  • 투고 : 2017.02.06
  • 심사 : 2017.02.22
  • 발행 : 2017.02.28
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초록

공변세포는 선태류, 양치류 그리고 모든 관다발식물의 잎에서 발견되며, 공변세포벽의 특징은 식물에 따라 매우 다양하고 특수하다. 식물에서 공변세포의 형태적 특징은 단자엽식물과 쌍자엽식물에서 관찰할 수 있는 두 종류로 분류되어 왔다. 일반적으로 단자엽식물은 아령형이고 쌍자엽식물은 콩팥형으로 알고 있다. 그러나 많은 단자엽식물의 공변세포는 콩팥형이다. 벼과에 속하는 옥수수와 벼 그리고 사초과의 공변세포는 아령형이다. 아령형의 공변세포를 보이는 식물은 부세포가 있다. 쌍자엽식물의 공변세포는 대부분 콩팥형이며 부세포가 없는 것이 특징이다. 기공은 공변세포와 부세포로 구성되어 있는 것으로 알고 있으나, 대부분의 쌍자엽식물은 부세포가 없다. 이제까지 단자엽식물은 공변세포 모양이 아령형이며 쌍자엽식물은 콩팥형으로 알고 있으나, 결론적으로 공변세포의 모양은 단자엽식물과 쌍자엽식물에 의해 분류되지 않으며 대부분의 벼과와 사초과를 제외하면 단자엽식물의 공변세포도 콩팥형이다. 돌나물은 공변세포가 가늘고 긴 입술형 그리고 자주달개비의 공변세포는 완벽하게 반달형이다. 따라서 콩팥형의 경우는 식물에 따라 그 모양이 모두 다르다고 할 수 있으며, 아령형의 경우는 그 공변세포의 형태가 비교적 일정하다.

The walls of guard cells have many different specialized features. Guard cells are present in leaves of bryophytes, ferns and almost all of the vascular plants. Guard cells show considerable morphological diversities. It is understood that the stomata show two types in terms of morphological characterizations of guard cells. The first type is only found in a few monocots including Poaceae and Cyperaceae. In rice and corn, guard cells have the morphological characteristics of dumbbell shape. The morphological characteristics of dumbbell shape always have subsidiary cells. The other type is found in every dicots and many monocots and they are kidney-shaped guard cells. The plants of kidney-shaped guard cells rarely have subsidiary cells except Commelina communis L. Therefore, it could be concluded that two types of the morphological characteristics of guard cells cannot divide according to monocots or dicots. Every plants in which stomatal characteristic features were all different, most of them belong to kidney-shaped guard cells. However in case of Sedum sarmentosum, guard cells were shown to be long and narrow lips type. In Tradescantia virginiana, the shape of guard cells could be called perfectly to half-moon type. Therefore, it could be concluded that kidney-shaped types are all different in some way, but dumbbell-shaped types are almost constant.

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