title: Structural organization of epidermis in leaves of extant species of Gnetum L. (Gnetales) and Middle Jurassic Bennettitales
metadata.name: dc.contributor.author
metadata.value: Bogdanova, Ianina
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kartseva, Lyudmila
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2023-08-24T11:34:14Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2023-08-24T11:34:14Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2023-06
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Bogdanova, I. and Kartseva, L. 2023. Structural organization of epidermis in leaves of extant species of Gnetum L. (Gnetales) and Middle Jurassic Bennettitales. Bio. Comm. 68(2): 105–121. https://doi.org/10.21638/spbu03.2023.205
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu03.2023.205
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/43877
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: An attempt to assess the identification and evaluation of correlations between the epidermal characters of leaves in Bennettitales and the comparison of the
  results with the structural organization of leaves of extant plants has been carried
  out. Epidermis of four species of Gnetum L. and four species of Jurassic
  Bennettitales (Nilssoniopteris Nathorst and Ptilophyllum Morris) was studied.
  The coefficients of variation for epidermal characters Gnetum range from 6.4 to
  24.0 %, Ptilophyllum — 15.7–63.5 % and Nilssoniopteris — 18.0–39.9 %. In both
  groups of plants, the sinuosity of the tangential cell walls of the epidermal cells
  in the upper and lower epidermis is a stable character (Cv ≤ 18.0 %). In the Ptilophyllum
  and Gnetum, the length of stomata demonstrates a low level of variability
  (Cv ≤ 16.8 %). A significant range of the coefficients of variation in both
  Gnetum and Bennettitales show the number of epidermal cells per 1 mm2 of
  the upper and lower epidermis (17.5 % ≤ Сv ≤ 31.9 %), the area of the epidermal
  cells in the upper and lower epidermis (21.2 % ≤ Сv ≤ 63.5 %) and the number
  of stomata per 1 mm2 of epidermis (29.3 % ≤ Сv ≤ 39.9 %). Similarities in the
  correlation structure of the epidermal characters are revealed in correlations
  between sinuosity of the tangential cell walls of the epidermis, the number of
  stomata per 1 mm2 and their size; the length of stomata and the number of
  epidermal cells; stomatal index and the number of epidermal cells of the epidermis.
  In Gnetum, the number of differentiated stomata correlates with the
  number of aborted stomata. In N. angustifolia and P. caucasicum, the number of
  stomata correlates with the number of papillae per 1 mm2. Similarities in correlational
  structure of epidermis in Nilssoniopteris, Ptilophyllum, and Gnetum could
  be ecological adaptations or ontogenetic characters, such as the development
  of stomata that has been described by other researchers.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: The reported study was funded
  by RFBR according to research project
  No. 18-34-00912 and partly was carried
  out on the equipment of the Center of
  Collective Research “Cellular and Molecular
  Technologies of Studying Plants and Fungi”
  BIN RAS (St. Petersburg).
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Biological Сommunications;Volume 68; Issue 2
metadata.lang: -
metadata.name: dc.subject
metadata.value: paleobotany
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: plant fossils
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Bennettittales
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Gnetum
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: leaf
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: structural organization
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Structural organization of epidermis in leaves of extant species of Gnetum L. (Gnetales) and Middle Jurassic Bennettitales
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 05.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/43877/1/05.pdf
resources.format: Adobe PDF
resources.size: 14,53 MB