Lee Ok Ran, Nguyen Ngoc Quy, Lee Kwang Ho, Kim Young Chang, Seo Jiho
Department of Plant Biotechnology, College of Agriculture and Life Science, Chonnam National University, Gwangju, Republic of Korea.
Department of Wood Science and Landscape Architecture, College of Agriculture and Life Science, Chonnam National University, Gwangju, Republic of Korea.
J Ginseng Res. 2017 Oct;41(4):463-468. doi: 10.1016/j.jgr.2016.08.001. Epub 2016 Aug 6.
Both Meyer and are obligate shade-loving plants whose natural habitats are broadleaved forests of Eastern Asia and North America. 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 species was performed to better understand the physiological processes that limit photosynthesis.
Leaves of ginseng plants grown in soil and hydroponic culture were sectioned for analysis. Leaf structures of both species were observed using a light microscope, scanning electron microscope, and transmission electron microscope.
The mesostructure of both and frequently had one layer of noncylindrical palisade cells and three or four layers of spongy parenchymal cells. contained a similar number of stomata in the abaxial leaf surface but more tightly appressed enlarged grana stacks than contained. The adaxial surface of the epidermis in showed cuticle ridges with a pattern similar to that of .
The anatomical leaf structure of both and 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.
人参和西洋参均为喜阴植物，其自然栖息地为东亚和北美的阔叶林。当暴露于高温或遮荫不足的环境中时，人参属植物很容易受到光抑制的损害。在本研究中，对两种最著名的人参属植物的叶片结构进行了细胞组织学研究，以更好地了解限制光合作用的生理过程。
对在土壤和水培条件下生长的人参植株的叶片进行切片分析。使用光学显微镜、扫描电子显微镜和透射电子显微镜观察两种人参属植物的叶片结构。
人参和西洋参的叶中层结构通常有一层非圆柱形栅栏细胞和三到四层海绵薄壁细胞。西洋参叶背面的气孔数量与人参相似，但比人参含有更紧密排列的增大的叶绿体基粒堆叠。人参表皮的正面显示出与西洋参相似图案的角质层脊。
人参和西洋参的叶片解剖结构表明它们是典型的喜阴植物。叶绿体结构的细微差异表明，可以使用透射电子显微镜图像对这两个不同的物种进行鉴定，并且可以通过控制光合作用效率来进行耐光品种的培育。
