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Journal of Systematics and Evolution 2009年第3期47卷 231-236页

作者： 1,2Gao CHEN 1Wei-Bang SUN 3Hang SUN 1(Kunming Botanical Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China) 2(Graduate School of Chinese Academy of Sciences, Beijing 100049, China) 3(Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China) (Key Laboratory of Biodiversity and Biogeography Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China)

Buddleja macrostachya (Buddlejaceae) is a widespread shrub native to the Sino-Himalayan mountains and beyond. It has been found to occur at two ploidy levels, hexaploid, 2n=6x=114 and dodecaploid, 2n=12x=228. To determine if morphological characters might be used as indicators of ploidy levels, we measured floral and fruit length, relative and absolute leaf size, trichome density on both leaf surfaces, and stomatal density and length in different populations of B. macrostachya. In general, flower and fruit length, absolute leaf size, and stomatal length increased with an increase at ploidy level (Pleaf size (P>0.05) in different populations. Other characters studied such as trichome type, cuticular membrane and ornamentation of stomata, cell and stomatal shape, and anticlinal wall pattern were quite constant in this species. Thus it appears that flower and fruit length, absolute leaf size, and stomatal frequency and length can be used to distinguish hexaploid from dodecaploid cytotypes either in the fleld or in herbarium specimens.

关键词： Buddleja macrostachya dodecaploid hexaploid leaf epidermis ploidy level stomata.

Characteristics of leaf epidermis of 22 Lilieae (Liliaceae) under Different Altitudes in China

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American Journal of Plant Sciences 2023年第1期14卷 29-40页

作者： Genshen Yin Shuangshuang Zhang Wenlei Cheng Minghua Dong Ye Chen School of Agriculture & Life Sciences Kunming University Kunming China

In this study, 22 leaf samples of 22 Lilieae species were collected in six Province at 90 - 3740 m to study the variations of leaf characteristics with altitude change. The Qualitative character of leaf epidermis and two stomatal indexes, viz. stomatal area (SA), stomatal index (SI), were analyzed in laboratory. The results show that: 1) the shape of the leaf epidermis cells and the pattern of the anticlinal walls provide some useful taxonomic information to distinguish the genus, however, none of the stable traits are exclusive to a genus;2) there are significant or even very significant linear correlations between the two indexes and altitude, of which SA exhibit a negative correlation with altitude (r2 = 0.294, p = 0.009), while SI exhibit a positive correlation with altitude (r2 = -0.254, p = 0.017). As a result, the pattern of leaf cells and anticlinal walls is influenced by genetic factors, while the stomatal area and stomatal index are influenced by environmental factors. Members of the tribe Lilieae have a relatively stable elevation range, which is related to their long-term adaptation to the local environment in the structure of their leaf epidermis.

关键词： Lilieae leaf epidermis Stomatal Area Stomatal Index Altitudes

Relationship Between Micromorphological Structure of leaf epidermis and Drought Resistance in Callisia repens

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Asian Agricultural Research 2022年第11期14卷 65-68,73页

作者： Haofeng OUYANG Silin CHEN Jinxiang LIU Jie WU Yudan SUN College of Life Science and Technology Lingnan Normal UniversityZhanjiang 524048China

[Objectives]To discuss the relationship between left epidermis structures and drought resistance.[Methods]The leaf epidermis of Callisia repens was studied by optical microscope.[Results]The upper and lower epidermal cells of the leaves of Callisia repens arranged closely,and no cell gap was *** morphology of the epidermal cells was hexagonal,few pentagon or heptagon,the equivalent elliptical aspect ratio was 1.20,the vertical wall was straight and there was no stomatal *** with the epidermal cells,the morphology of the lower epidermal cells was *** equivalent elliptic aspect ratio was 1.35,and the vertical wall was smooth and *** mean oval aspect ratio of the stomatal guard cells was 1.42,the average stomatal density was 11.79/mm 2,and the average stomatal index was 17.21.[Conclusions]These characteristics provide the theoretical basis for the drought resistance of Callisia repens and the ornamental plants as roof greening.

关键词： Callisia repens leaf epidermis Micromorphology

Characters of leaf epidermis in Dryopteridaceae and its systematic significance

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Characters of leaf epidermis in Dryopteridaceae and its syst...

Monocotyledon-like Leaves from the Middle Jurassic of East Siberia(Russia)

全国系统与进化植物学研讨会暨第九届系统与进化植物学青年研讨会

作者： JIN-MEI LU,HONG WANG and DE-ZHU LI Laboratory of Plant Biogeography and Biodiversity, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650204, China, Laboratory of Plant Biogeography and Biodiversity, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650204, China, Laboratory of Plant Biogeography and Biodiversity, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650204, China.

Dryopteridaceae is a large temperate family, comprising about 1200 species. The leaf epidermis of 67 species, representing all the 14 genera of Dryopteridaceae and six genera of allied groups was investigated under light microscopy and a part of these species under scanning electron microscopy. The materials for LM study were macerated in Jeffrey’s solution, and then stained in a solution of 1% safranin. The materials for SEM observation were directly mounted on stubs after cleaning. The form of epidermal cells of Dryopteridaceae species was usually irregular, with the anticlinal walls arched, sinuolate, sinuous to sinuate. The upper epidermal cells of Cyclopeltis and Didymochlaena, Rumohra were more or less polygonal, with straight anticlinal walls. It might imply that Cyclopeltis is more closely related to the two tropical genera than other genera of Dryopteridaceae Ching. The length of epidermal cells was about 2 times width in most species of tribe Dryopterideae while the ratio in Phanerophlebiopsis neopodophylla, Lithostegia foeniculacea, Arachniodes gegatia, A. chinensis, and A. tonkinensis was over 5. It suggested that Phanerophlebiopsis neopodophylla, Lithostegia foeniculacea are closely to the genus Arachniodes. The stomatal apparatus in all species only existed on the abaxial epidermis. The major stomatal apparatus was anomocytic, while other types, e.g., diacytic, anisocytic, polocytic, and tetracytic types also occurred in the family. The stomata on a single leaf belonged to two or more types in most species. The type of stomata apparatuses in Cyclopeltis genus was exclusively polocytic, while prevailing stomatal type in Rumohra was tetracytic which was not found in all sampling of Dryopteridaceae. Under SEM, the inner margin of the outer stomatal rim ranged from nearly-smooth to sinuolate or erose, and the cuticular membrane of the leaf epidermis was striated, but sometimes with granula. The guard cells were sunken in all species except for Cyclopeltis

关键词： Cyclopeltis Dryopteridaceae leaf epidermis stomata

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Acta Geologica Sinica(English Edition) 2022年第6期96卷 1884-1896页

作者： Andrey FROLOV Ilya ENUSHCHENKO Institute of the Earth’s Crust Siberian Branch of the Russian Academy of SciencesIrkutsk 664033Russia Limnological Institute Siberian Branch of the Russian Academy of SciencesIrkutsk 664033Russia

leaf fragments of Herbifolia antiqua *** et Enushchenko *** *** the Middle Jurassic(Aalenian)of the Irkutsk Coal Basin(Eastern Siberia,Russia)are *** following features are characteristic of *** *** ***.:the presence of leaf sheaths,linear smooth-edged leaves with parallel venation,anastomoses between the veins,anomocytic stomata,rhomb-shaped ordinary epidermal *** a combination of characters is widespread in modern monocotyledonous plants and is absent in fossil and modern cryptogam and *** to the lack of evidence of an enclosed ovule in *** *** ***.,we attribute it to a typological angiosperm,based on its unique leaf structure characteristic of *** leaf epidermal structure of Herbifolia *** most similar to those of modern Asparagales and Liliales.

关键词： monocotyledons leaf epidermis new taxa Jurassic angiosperm Irkutsk Coal Basin

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Effect of Salinity on the Composition, Number and Size of Epidermal Cells along the Mature Blade of Wheat Leaves

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Journal of Integrative Plant Biology 2007年第7期49卷 1016-1023页

作者： Yuncai Hu Urs Schmidhalter Chair of Plant Nutrition Technical University of Munich D-85350 Freising Germany

Salinity inhibits leaf growth in association with changes in cell size. The objective of this study was to determine the spatial distributions of the composition, number and dimensions of epidermal cells in the mature blades of leaf four of wheat seedlings under saline conditions. Plants were grown in loamy soil either with or without 120 mmol/L NaCl in a growth chamber, and harvested after leaf four was fully developed. The results of the spatial distribution analyses of width along the blade showed that salinity not only reduced the width of the leaf blade, but that it also altered the distribution pattern of blade width along the leaf axis. The reduction in the final size of the leaf blade was associated with a reduction in the total number of epidermal cells and in their widths and lengths. This study also revealed the spatial effects of salinity on the blade and epidermal cell dimensions along the leaf axis. In particular, salinity inhibited the total cell number for interstomatal, sister and elongated cells, implying that cell division in wheat leaves is inhibited by salinity. However, the lengths of interstomatal cells were not affected by salinity （unlike those for the sister and elongated cells）, suggesting the relative contributions of cell length and numbers to the reduction in the final length of the blade under salinity is dependent on cell type.

关键词： cell length cell number leaf epidermis salinity wheat.

leaf Epidermal Feature in Clematis (Ranunculaceae) with Reference to Its Systematic Significance

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Acta Botanica Sinica 2003年第3期45卷 257-268页

作者：史京华李良千中国科学院植物研究所系统与进化植物学重点实验室北京100093

For finding valuable systematic characters, leaf epidermis of 77 taxa, representing 12 sections of the genus Clematis and three related genera in the Ranunculaceae, were examined mainly by means of light microscopy (LM), and partially by scanning electron microscopy (SEM). It was shown that the leaf epidermal cells were usually irregular or polygonal in shape. The patterns of anticlinal walls were straight, arched or undulate. The stomatal apparatus is anomocytic and exists in abaxial epidermis of all species, and in the adaxial epidermis of some species. Under SEM observation, the leaf epidermis was often striated, seldom nearly smooth, and often with flakes attached. Evidence from leaf epidermis serves as a criterion for distinguishing the subsections in sect. Meclatis (Spach) Tamura and in sect. Fruticella Tamura. The results also support that there are several separate evolutionary processes in the genus Clematis .

关键词： Ranunculaceae Clematis leaf epidermis stomatal apparatus

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The identity of some taxa of Schizophragma (Saxifragaceae)

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Journal of Systematics and Evolution 2009年第2期47卷 151-161页

作者： 1,2Wei LIU 1Xiang-Yun ZHU 1(Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China) 2(Graduate University of Chinese Academy of Sciences,Beijing 100049,China) ( Graduate University of Chinese Academy of Sciences Beijing 100049 China )

After examining a large number of type and authoritative specimens of Schizophragma Siebold & Zucc.,*** *** and *** *** Rehder were reduced to synonyms of *** Rehder and *** *** *** was reduced to synonym of *** *** crassum *** *** was treated as the correct name of *** ***(Chun) *** name *** *** Rehder is *** taxonomic treat-ment is supported by leaf epidermal characters.

关键词： leaf epidermis new synonym reinstatement Schizophragma