Details

Autor(en) / Beteiligte

• Salmeron-Sanchez, Esteban
• Ma
• Garrido- Becerra, J.A
• Mendoza-Fernandez, A.J
• de Carrasco, C. Gil
• Ramos-Miras, J.J
• Lozano, R
• Merlo, M.E
• Mota, J.F

Titel

Ecology, genetic diversity and phylogeography of the Iberian endemic plant Jurinea pinnata on two special edaphic substrates: dolomite and gypsum

Ist Teil von

• Plant and soil, 2014-01, Vol.374 (1-2), p.233

Ort / Verlag

Springer

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Background and aims Jurinea pinnata is an Iberian vascular plant which only grows on gypsum and dolomite, two types of rocks associated with their exclusive endemic floras. In addition, the plant has an island-like distribution which could affect the differentiation and the genetic variability of wild populations. Thus, the species provides a unique opportunity for comparing (bio)geographical and ecological (edaphic) differentiation by means of molecular markers. Methods For our investigation we took 24 soil samples paired with a similar number of foliar samples for nutritional analyses. Our molecular-marker approach (AFLPs) involved 16 populations. Results The edaphic parameters revealed significant dissimilarities between dolomitic and gypsum soils. These differences are also found in the mineral composition of the leaves. However, molecular data revealed that the differentiation between populations correlates better with geographical isolation than with the substrate character. Conclusions The populations showing the greatest genetic diversity are those of the East Baetic territory where the species grow on both substrates and its populations are closer together. The plant tolerance to gypsum and dolomite can be explained either as a result of common adaptive mechanisms or of a more general adaptation to arid environments. Keywords AFLPs * Dolomitophily * Foliar analysis * Gypsophyte * Plant nutrition * Soil