Plant Breeding Systems.

Speciation and Cytogenetics

Colonization and isolation are critical events in the evolutionary dynamics of plant populations. In this paper I review how spatial population structure of genetic markers provides insights into the evolutionary significance of episodes of colonization and isolation in the Mediterranean flora. I use as themes to structure my review the following topics: spatial structure induced by historical associations among populations of widespread species; population differentiation in relation to the evolution of closely related species with disjunct distributions; the potential effect of founder events during colonization on character evolution; and the conservation implications of spatial population structure. My review illustrates that the Mediterranean flora is full of examples that provide key insights into such evolutionary and conservation issues.

/pdf/population-differentiation-in-mediterranean-plants-insights-1nccdhlzrx.pdf

Population differentiation in mediterranean plants: insights into colonization history and the evolution and conservation of endemic species

Restriction map variation has been assayed in the slowly evolving chloroplast DNA (cpDNA) inverted repeat regions of 43 genera of the large and economically important legume tribe Phaseoleae and representatives of several allied tribes. Cladistic analyses of these data indicate that several plastome groups correspond well to subtribes recognized largely on the basis of mor- phological variation. Based on these cpDNA data, the tribe as a whole does not appear to be monophyletic, a result in accordance with current, morphologically-based hypotheses. Plastomes of several genera belonging to subtribes considered basal within Phaseoleae have as their sister groups plastomes of non-Phaseoleae tribes, notably Millettieae, the tribe considered to represent the ancestral stock from which diverse elements of Phaseoleae were derived. More unexpectedly, plastomes of the tribe Desmodieae fall within the clade that includes the most derived chloroplast genomes of Phaseoleae.

Chloroplast DNA Phylogeny of the Papilionoid Legume Tribe Phaseoleae

https://bibliotecadigital.ipb.pt/bitstream/10198/7048/1/Identification%20of%20phenolic%20constituents%20of%20Cytisus%20multiflorus.pdf

Identification of phenolic constituents of Cytisus multiflorus

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...

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

Legumin-like proteins from Ephedra distachya, Ephedra foeminea, Gnetum gnemon, Gnetum montanum and Welwitschia mirabilis and four Angiosperms (Magnolia grandiflora, Pisum sativum, Glycine max and Cucurbita moschata) were used in a serological investigation The immunological tests demonstrate the heterogeneity of Gnetopsida and indicate discriminative correlations of Welwitschia, Gnetum and Ephedra to the examined Angiosperms

Storage globulins in Gnetopsida. 2. A serotaxonomic study of legumin-like proteins

Salt soluble storage proteins were extracted from seeds of Ephedra distachya, Ephedra foeminea, Gnetum gnemon, Gnetum montanum and Welwitschia mirabilis and separated by chromatographic procedures. The molecular weight of the main storage globulin ranges from 300 to 350 kD. Denaturation by SDS resolved the holoprotein in monomers of Mr 40 to 60 kD. Oligomers up to 120 kD were observed in Ephedra. Reduction of disulphide bridges by DTE resolved the monomers in paris of polypeptides of Mr 10 to 35 kD. The characters above indicate that the main storage globulin of Gnetopsida is a legumin-like protein.

Storage globulins in Gnetopsida. 1. Recognition of legumin-like proteins

Gestione della rete idrologica e conservazione della biodiversità vegetale in un territorio di bonifica (bonifica Burana, Emilia orientale).

“L’Erbario della Bonifica”. Un progetto per la conoscenza del territorio e della biodiversità vegetale nei canali della Bonifica Burana (Emilia orientale).

Lucia Conte

Papers

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

Storage globulins in Gnetopsida. 2. A serotaxonomic study of legumin-like proteins

Storage globulins in Gnetopsida. 1. Recognition of legumin-like proteins

Gestione della rete idrologica e conservazione della biodiversità vegetale in un territorio di bonifica (bonifica Burana, Emilia orientale).

“L’Erbario della Bonifica”. Un progetto per la conoscenza del territorio e della biodiversità vegetale nei canali della Bonifica Burana (Emilia orientale).