Data from: Wild cherries, petioles and geography: Response to locational and elevational trends in Türkiye
Data files
May 06, 2025 version files 13.35 KB
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Appendix.csv
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README.md
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Abstract
Widely distributed plants demonstrate a number of anatomical differences that help them adapt to the variable abiotic factors across their ranges, which in turn contributes to intraspecies variation. The genus Prunus L. subgenus Cerasus (Mill.) Focke is distributed across the three major phytogeographical regions (Mediterranean, Euro-Siberian and Irano-Turanian) of Türkiye and on either side of the major geological divide known as the Anatolian Diagonal. According to the Köppen-Geiger climate classification, Türkiye features 10 subclassifications in the arid semi-arid (B), temperate (C) and continental (D) zones. To explore how these affect the variation of this taxonomically complex subgenus, we examined the petiole anatomy of 63 individuals of its 10 species collected from across the country, characterizing their differences on a taxonomic level and investigating geographical and climatic sources of variation. To explore the variation in petiole anatomical characters, we employed multivariate linear and logistical regression analyses using altitude and coordinate data, as well as phytogeographical region and position in relation to the Anatolian Diagonal, as independent inputs. The results indicate that geographical position and altitude had an effect on petiole and vascular bundle dimensions, while climate zone is an important source of variation in cortex layer number and nodal pattern for some species. Analysing the group as a whole also yields some insight into the differences that may help species adapt to their specific surroundings. Additionally, we discuss differences in petiole anatomy among species, their implications for taxonomy and provide a key based on petiole cross sections.
Dataset DOI: 10.5061/dryad.pc866t21s
Description of the data and file structure
Wild cherries, petioles and geography: response to locational and elevational trends in Türkiye
Dataset DOI: 10.5061/dryad.pc866t21s
Summary
To explore the variation of subgenus Cerasus in Türkiye, we examined the petiole anatomy of 63 individuals of its 10 species collected from across the country, characterizing their differences on a taxonomic level and investigating geographical and climatic sources of variation. To explore the variation in petiole anatomical characters, we employed multivariate linear and logistical regression analyses using altitude and coordinate data, as well as phytogeographical region and position in relation to the Anatolian Diagonal, as independent inputs.
We used seven quantitative (width, height and width/height ratio of petiole and petiole vascular bundle, number of cortex layers) and seven qualitative (shape of epidermis cells and petiole cross-section; presence of papillae, trichomes, prismatic crystals and sclerenchyma; and nodal pattern) petiole anatomical features. For taxonomic analyses, we used one-way ANOVA using quantitative data to determine statistically significant features (p≤0.01), which were used in PCoAs along with qualitative characters. We used logistical regression to assess whether features change in regard to phytogeographical region or position in relation to the Anatolian Diagonal in Minitab statistical software. To accommodate species confined to one side of the Diagonal or one phytogeographic region, we also performed multivariate linear regression (MLR) using latitude, longitude and altitude as independent variables, and quantitative data as dependent variables. PCoA using Gower’s algorithm and MLR analyses were performed using PAST software version 4.03.
Description of the data and file structure
The data used in the statistical analysis of the study are given in comma delimited *.csv format. The measurements were taken with Argenit Kameram v3.1 software. more details on method is given in the article under subtitle "taxonomic and geographic analyses". The file contains following variables: Vascular bundle width (micrometer), Vascular bundle height (micrometer), Vascular Bundle width-to-height ratio, Petiole width, Petiole height, Petiole width-to-height ratio, Cortex layers, Epidermis cell shape, Presence of papillae, Presence of trichomes,Presence of prismatic crystals, Petiole shape, Presence of sclerenchyma, Nodal pattern, Altitude (metres), Longtitude, Latitude. The file contains the data formatted for analysis in PAST (PAleontological STatistics) version 4.03 software.
CP Numbers are the collection numbers, and taxon names were abbreviated for easier use. Köppen-Geiger, diagonal and region informations are abbreviated and the abbreviations are given in this read-me file. Altitude is given in the table as meters above sea level. Latitude and longitude are given in decimal degree format. All measurements are in micrometers, and the presence/absence data are given in binary codes (1 as presence, 0 as absence).
Abbreviations:
CP No, collector numbers; W, width; H, height.
Taxon: ALB, Prunus albicans; AVI, Prunus avium; BRA, Prunus brachypetala; CER, Prunus cerasus; HIP, Prunus hippophaeoides; INC, Prunus incana; MAH, Prunus mahaleb; MIC, Prunus microcarpa; PRO, Prunus prostrata.
Relationship to the Anatolian Diagonal: E, east; W, west; O, on (the Anatolian Diagonal).
Phytogeographical region: I, Irano-Turanian; C, Colchic; M, Mediterranean.
Köppen-Geiger Climate classifications: BSh, hot desert and semi-arid; BSk, cold desert and semi-arid; Csa, hot-summer temperate with mild winters; Csb, warm-summer temperate with mild winters; Cfa, humid sub-tropical; Cfb, oceanic; Dsa, hot-summer humid continental with cold winters; Dfa, continental with cold winters averaging above 22 °C in hottest month; Dsb warm-summer humid; Dfb; continental with cold winters occurring poleward of hot summer continental climates.
Access information
Other publicly accessible locations of the data:
This data is available as supplementary material in the research article
Data was derived from the following sources:
Anatomical data was produced by the Biodiversity Research Group of Istanbul University's Botany department. Collection data for specimens used is available at ISTF digital herbarium https://istf.istanbul.edu.tr/, Phytogeographical regions are based on Flora of Turkey and the East Aegean Islands (Davis 1971).