Phenological and genetic characterization of Sedum hispanicum (Crassulaceae) in the Italian peninsula at the western margin of its distribution

Pezzi, Giovanna; Buldrini, Fabrizio; Mandolfo, Antonio Luigi; Puppi, G.; Velli, Andrea; Conte, Lucia

doi:10.5091/plecevo.2017.1309

Cited by 3 publications

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“…Based on the data reported in this study, P. fasciculata populations maintain a mixed reproductive strategy in which gene flow and genetic drift act as alternative and complementary evolutionary mechanisms, allowing the species to colonize and persist in harsh environments characterized by soil salinity variations, like the Salse di Nirano or coastal wetlands. Similar results were also reported in Sedum hispanicum L. (Pezzi et al 2017) growing in another extreme environment, such as the gypsum outcrops of northern Apennines.…”

Section: Issr-based Genetic Variation and Differentiationsupporting

confidence: 87%

A littoral grass growing inland: genetic diversity of Puccinellia fasciculata around mud volcanoes in Italy

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Dallai

Modica

et al. 2020

Plant Biosystems - An International Journal Dealing with all As

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Puccinellia fasciculata is a littoral miohalophyte with a Mediterranean-Atlantic distribution, uncommonly found in inland sites. The main Italian inland population is located in the "Salse di Nirano" Reserve, an area internationally renowned for the phenomenon of mud volcanoes. In this study, molecular markers are used to characterize this population and its possible relationships with the nearest littoral conspecific population. A survey of ISSR markers revealed low levels of genetic diversity (He = 0.081 in the inland population, 0.105 in the littoral one) and a weak genetic differentiation (Gst = 0.24 within the inland population, 0.28 among this and the littoral one). A sequence analysis of three non-coding regions of chloroplast DNA found no genetic differentiation both within the inland population and between the two populations, and revealed a common origin for the two dating back to the middle Holocene. The apparent incongruence between the results from the two approaches may be explained by differences between ISSR and non-coding cpDNA markers in capturing signatures related to gene flow; their integrated information implies a mixed reproductive strategy and a common evolutionary history for the two examined populations. Effective conservation strategies are recommended for the inland population of P. fasciculata and its habitat.

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Section: Issr-based Genetic Variation and Differentiationsupporting

confidence: 87%