• 제목/요약/키워드: cuticle micromorphology

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Cuticle Micromorphology of Korean Gymnosperms I. Cycadaceae, Ginkgoaceae, Taxaceae and Cephalotaxaceae

  • Sung Soo Whang
    • Journal of Plant Biology
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    • 제38권2호
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    • pp.181-193
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    • 1995
  • Cuticle micromorphology of four families of Korean gymnosperms, Cycadaceae, Ginkgoaceae, Taxaceae, and Cephalotaxaceae, were studied with scanning electron microscopy. The outer and inner features of abaxial and adaxial cuticles were described in details; the absent or present of Florin ring, orifice, trichome, and plug and their shape, the shape and periclinal and anticlinal wall sculpture of epidermal cells, the shape of cuticular flange of epidermal cell, guard cell, and subsidiary cell, the number of stomatal bands and rows, and stomatal apparatus including the shape of polar extension, number of subsidiary cells, the sculpture of guard cell and subsidiary cell. Most of these features have not been sufficiently substantiated by the previous reprots. Furthermore, all the species investigated showed distinctive cuticle morphology with morphological and taxonomical informations.

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참나무속(Quercus L.) 식물 잎의 큐티클 미세형태의 분류학적 의미 (Cuticle micromorphology of leaves of Quercus L. (Fagaceae) and its taxonomic implications)

  • 조성호;김기중;박종욱;선병윤;정명기;박재홍
    • 식물분류학회지
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    • 제38권4호
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    • pp.405-431
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    • 2008
  • 참나무속의 22종과 외군의 큐티클 미세형질을 주사전자현미경(SEM)을 통해 분석하였다. 22종은 참나무속의 모든 절에서 각각 2-3종을 선정하였고, 외군은 Trigonobalanus 속과 Alnus 속에서 선정하였다. 10개의 큐티클 내부형질과 8개의 큐티클 외부형질을 관찰, 기재하였다. 돌기물의 유무, 배축면 수층벽의 형태, 부세포의 배열 형태 및 수층벽의 형태, 왁스층의 발달 정도가 속내 분류에 유용한 형질로 나타났다. 18개의 형질을 이용한 분지분석에서는 66 step의 tree length를 가지는 72개의 최대절약계통수를 얻었다. 분지분석결과 Cyclobalanopsis 아속과 Quercus 아속은 각각 75% bootstrap value와 57% bootstrap value로 지지되었다. 큐티클 미세형질에 기초한 참나무속의 분류에서는 Camus가 제안한 아속간의 분류체계를 지지하였다. 그러나 Erythrobalanus 절과 Cerris 절이 하나의 그룹을 형성하였고, Lepidobalanus 절이 다분지를 형성하여 절간 유연관계는 알 수 없었다. 그러므로 참나무속의 절간 분류를 위해서는 보다 다양한 연구가 수행되어야 할 것으로 판단된다.

Micromorphology and development of the epicuticular structure on the epidermal cell of ginseng leaves

  • Lee, Kyounghwan;Nah, Seung-Yeol;Kim, Eun-Soo
    • Journal of Ginseng Research
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    • 제39권2호
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    • pp.135-140
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    • 2015
  • Background: A leaf cuticle has different structures and functions as a barrier to water loss and as protection from various environmental stressors. Methods: Leaves of Panax ginseng were examined by scanning electron microscopy and transmission electron microscopy to investigate the characteristics and development of the epicuticular structure. Results: Along the epidermal wall surface, the uniformly protuberant fine structure was on the adaxial surface of the cuticle. This epicuticular structure was highly wrinkled and radially extended to the marginal region of epidermal cells. The cuticle at the protuberant positions maintained the same thickness. The density of the wall matrix under the structures was also similar to that of the other wall region. By contrast, none of this structure was distributed on the abaxial surface, except in the region of the stoma. During the early developmental phase of the epicuticular structure, small vesicles appeared on wallecuticle interface in the peripheral wall of epidermal cells. Some electron-opaque vesicles adjacent to the cuticle were fused and formed the cuticle layer, whereas electron-translucent vesicles contacted each other and progressively increased in size within the epidermal wall. Conclusion: The outwardly projected cuticle and epidermal cell wall (i.e., an epicuticular wrinkle) acts as a major barrier to block out sunlight in ginseng leaves. The small vesicles in the peripheral region of epidermal cells may suppress the cuticle and parts of epidermal wall, push it upward, and consequently contribute to the formation of the epicuticular structure.