Taxonomic differences between Pinus sylvestris and P. uncinata revealed in the stomata and cuticle characters for use in the study of fossil material

García Álvarez, Salvia and Morla Juaristi, Carlos and Solana Gutierrez, Joaquin and Garcia-Amorena Gomez del Moral, Ignacio (2009). Taxonomic differences between Pinus sylvestris and P. uncinata revealed in the stomata and cuticle characters for use in the study of fossil material. "Review of Palaeobotany and Palynology", v. 155 (n. 1-2); pp. 61-68. ISSN 0034-6667. https://doi.org/10.1016/j.revpalbo.2009.01.002.

Description

Title: Taxonomic differences between Pinus sylvestris and P. uncinata revealed in the stomata and cuticle characters for use in the study of fossil material
Author/s:
  • García Álvarez, Salvia
  • Morla Juaristi, Carlos
  • Solana Gutierrez, Joaquin
  • Garcia-Amorena Gomez del Moral, Ignacio
Item Type: Article
Título de Revista/Publicación: Review of Palaeobotany and Palynology
Date: May 2009
ISSN: 0034-6667
Volume: 155
Subjects:
Faculty: E.T.S.I. Montes (UPM)
Department: Silvopascicultura [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Taxonomic differences in the needle epidermis characteristics of Pinus sylvestris L. and Pinus uncinata Ramond ex DC. from two Iberian populations were sought; such information could help identify these species when pollen analysis and the inspection of wood anatomy fails. The features of the cuticle are commonly well preserved in the fossil record. Although the epidermal patterns of the examined taxa were similar, qualitative differences were seen in the subsidiary and guard cells. P. sylvestris showed small subsidiary cells homogenously arranged around the opening of the epistomatal chamber, while P. uncinata showed small, lateral subsidiary cells and non-differentiated subsidiary cells in the polar position. The aperture of the epistomatic chamber of P. uncinata was also larger in diameter (15.1 ± 1.8 µm P. sylvestris; 21.1 ± 2.8 µm P. uncinata). Principal components analysis and discriminant analysis was performed on the features of the guard cells characterising the size and shape of the cuticular thickenings — all the variables analysed can be measured in disperse stomata in microscope preparations for pollen analysis. Significant differences were found in the upper woody lamellae width and the coefficient associated with the shape of the medial lamellae borders (discriminant analysis weighting 0.739 and 0.826 respectively). Other significant parameters included the coefficient associated with the relative size of the medial lamellae border width of the guard cells with respect to the distance between the external limits of the medial lamellae borders, and the length of the upper woody lamella. Different light regimens appeared not to significantly affect the variability of the studied features.

More information

Item ID: 5072
DC Identifier: http://oa.upm.es/5072/
OAI Identifier: oai:oa.upm.es:5072
DOI: 10.1016/j.revpalbo.2009.01.002
Official URL: http://www.sciencedirect.com/science/journal/00346667
Deposited by: Memoria Investigacion
Deposited on: 24 Nov 2010 12:09
Last Modified: 20 Apr 2016 14:02
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