Cytohistological study of the leaf structures of Panax ginseng Meyer and Panax quinquefolius L.
Background: Both Panax ginseng Meyer and Panax quinquefolius are obligate shade-loving plants whose natural habitats are broadleaved forests of Eastern Asia and North America. Panax species are easily damaged by photoinhibition when they are exposed to high temperatures or insufficient shade. In thi...
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doaj-4977c33ecf0546cd95d94219138084282020-11-24T23:34:50ZengElsevierJournal of Ginseng Research1226-84532017-10-0141446346810.1016/j.jgr.2016.08.001Cytohistological study of the leaf structures of Panax ginseng Meyer and Panax quinquefolius L.Ok Ran Lee0Ngoc Quy Nguyen1Kwang Ho Lee2Young Chang Kim3Jiho Seo4Department of Plant Biotechnology, College of Agriculture and Life Science, Chonnam National University, Gwangju, Republic of KoreaDepartment of Plant Biotechnology, College of Agriculture and Life Science, Chonnam National University, Gwangju, Republic of KoreaDepartment of Wood Science and Landscape Architecture, College of Agriculture and Life Science, Chonnam National University, Gwangju, Republic of KoreaDepartment of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, Republic of KoreaResearch and Development Headquarters, Korea Ginseng Corp, Daejeon, 34128, Republic of KoreaBackground: Both Panax ginseng Meyer and Panax quinquefolius are obligate shade-loving plants whose natural habitats are broadleaved forests of Eastern Asia and North America. Panax species are easily damaged by photoinhibition when they are exposed to high temperatures or insufficient shade. In this study, a cytohistological study of the leaf structures of two of the most well-known Panax species was performed to better understand the physiological processes that limit photosynthesis. Methods: Leaves of ginseng plants grown in soil and hydroponic culture were sectioned for analysis. Leaf structures of both Panax species were observed using a light microscope, scanning electron microscope, and transmission electron microscope. Results: The mesostructure of both P. ginseng and P. quinquefolius frequently had one layer of noncylindrical palisade cells and three or four layers of spongy parenchymal cells. P. quinquefolius contained a similar number of stomata in the abaxial leaf surface but more tightly appressed enlarged grana stacks than P. ginseng contained. The adaxial surface of the epidermis in P. quinquefolius showed cuticle ridges with a pattern similar to that of P. ginseng. Conclusion: The anatomical leaf structure of both P. ginseng and P. quinquefolius shows that they are typical shade-loving sciophytes. Slight differences in chloroplast structure suggests that the two different species can be authenticated using transmission electron microscopy images, and light-resistant cultivar breeding can be performed via controlling photosynthesis efficiency.http://www.sciencedirect.com/science/article/pii/S1226845316301397cytohistological studyleafPanax ginsengPanax quinquefoliusthylakoid |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ok Ran Lee Ngoc Quy Nguyen Kwang Ho Lee Young Chang Kim Jiho Seo |
spellingShingle |
Ok Ran Lee Ngoc Quy Nguyen Kwang Ho Lee Young Chang Kim Jiho Seo Cytohistological study of the leaf structures of Panax ginseng Meyer and Panax quinquefolius L. Journal of Ginseng Research cytohistological study leaf Panax ginseng Panax quinquefolius thylakoid |
author_facet |
Ok Ran Lee Ngoc Quy Nguyen Kwang Ho Lee Young Chang Kim Jiho Seo |
author_sort |
Ok Ran Lee |
title |
Cytohistological study of the leaf structures of Panax ginseng Meyer and Panax quinquefolius L. |
title_short |
Cytohistological study of the leaf structures of Panax ginseng Meyer and Panax quinquefolius L. |
title_full |
Cytohistological study of the leaf structures of Panax ginseng Meyer and Panax quinquefolius L. |
title_fullStr |
Cytohistological study of the leaf structures of Panax ginseng Meyer and Panax quinquefolius L. |
title_full_unstemmed |
Cytohistological study of the leaf structures of Panax ginseng Meyer and Panax quinquefolius L. |
title_sort |
cytohistological study of the leaf structures of panax ginseng meyer and panax quinquefolius l. |
publisher |
Elsevier |
series |
Journal of Ginseng Research |
issn |
1226-8453 |
publishDate |
2017-10-01 |
description |
Background: Both Panax ginseng Meyer and Panax quinquefolius are obligate shade-loving plants whose natural habitats are broadleaved forests of Eastern Asia and North America. Panax species are easily damaged by photoinhibition when they are exposed to high temperatures or insufficient shade. In this study, a cytohistological study of the leaf structures of two of the most well-known Panax species was performed to better understand the physiological processes that limit photosynthesis.
Methods: Leaves of ginseng plants grown in soil and hydroponic culture were sectioned for analysis. Leaf structures of both Panax species were observed using a light microscope, scanning electron microscope, and transmission electron microscope.
Results: The mesostructure of both P. ginseng and P. quinquefolius frequently had one layer of noncylindrical palisade cells and three or four layers of spongy parenchymal cells. P. quinquefolius contained a similar number of stomata in the abaxial leaf surface but more tightly appressed enlarged grana stacks than P. ginseng contained. The adaxial surface of the epidermis in P. quinquefolius showed cuticle ridges with a pattern similar to that of P. ginseng.
Conclusion: The anatomical leaf structure of both P. ginseng and P. quinquefolius shows that they are typical shade-loving sciophytes. Slight differences in chloroplast structure suggests that the two different species can be authenticated using transmission electron microscopy images, and light-resistant cultivar breeding can be performed via controlling photosynthesis efficiency. |
topic |
cytohistological study leaf Panax ginseng Panax quinquefolius thylakoid |
url |
http://www.sciencedirect.com/science/article/pii/S1226845316301397 |
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