CAJ | 학술논문

水韭属是濒危的孑遗植物，是研究古生态及其物种演化的活化石。本文用扫描电子显微镜和透射电子显微镜观察了中华水韭叶片的结构特征，首次报道了：（1）通气道横隔细胞在同一平面以5～7个放射状短臂相互连接，且细胞表面有数百个微纤毛；（2）叶表皮为复表皮；（3）光合细胞以5～7个短臂在3D空间相互连接；（4）叶脉不分支，管胞的环纹与初生壁间另有连接结构，管胞周围有薄壁细胞紧密包围；（5）舌足与叶肉嵌合处各有表皮；（6）自气孔下室观察了气孔器的内侧结构，为气孔研究拓展了视野。认为水韭属叶片的超微3D结构具有稳定的特殊性和复杂性，与近源的石松科及卷柏科相差甚远，证明水韭有孤立的演化路线。
수구속시빈위적혈유식물，시연구고생태급기물충연화적활화석。본문용소묘전자현미경화투사전자현미경관찰료중화수구협편적결구특정，수차보도료：（1）통기도횡격세포재동일평면이5～7개방사상단비상호련접，차세포표면유수백개미섬모；（2）협표피위복표피；（3）광합세포이5～7개단비재3D공간상호련접；（4）협맥불분지，관포적배문여초생벽간령유련접결구，관포주위유박벽세포긴밀포위；（5）설족여협육감합처각유표피；（6）자기공하실관찰료기공기적내측결구，위기공연구탁전료시야。인위수구속협편적초미3D결구구유은정적특수성화복잡성，여근원적석송과급권백과상차심원，증명수구유고립적연화로선。
Isoetes, belonging to the endangered and relict plant, is the living fossil that helps to study the paleoecology and the evolution of plants. The structures’ features of the Isoetes sinensis Palmer’ s leaves were observed by scanning electron microscope (SEM) and transmission electron microscope (TEM). Some results are first reported:(1) The transverse septa cells in the parichnos are linked together by 5~7 radial galianconisms at the sameplane, and there are hundreds of microfilaments on the surface of the cells;(2) Leaf epidermis is multiple epidermis;(3) In the 3D space, photosynthetic cells are linked together by 5~7 galianconisms;(4) Vein doesn’ t branch, and there is a linking structure between annulation of annular vessel and primary wall, and annular vessel is tightly surrounded by parenchymal cells;(5) There are epidermis in the chimerism of the glossopodium and that of the mesophyll;(6) The inner structure of the stomatal apparatus are observed through the substomatic chamber, which broadens the horizon for the study of stoma. It is believed that the ultramicro 3D structure of the Isoetes leaf has its stable particularity and complexity, and its own peculiar features are quite different from the near?source Lycopodiaceae and Selaginellaceae, which indicates that Isoetes has its isolated way of evolution.