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Thessaloníki, Greece

Esteban R.,Institute of Agrobiotechnology | Barrutia O.,University of the Basque Country | Artetxe U.,University of the Basque Country | Fernandez-Marin B.,University of the Basque Country | And 2 more authors.
New Phytologist | Year: 2015

Photosynthetic pigment composition has been a major study target in plant ecophysiology during the last three decades. Although more than 2000 papers have been published, a comprehensive evaluation of the responses of photosynthetic pigment composition to environmental conditions is not yet available. After an extensive survey, we compiled data from 525 papers including 809 species (subkingdom Viridiplantae) in which pigment composition was described. A meta-analysis was then conducted to assess the ranges of photosynthetic pigment content. Calculated frequency distributions of pigments were compared with those expected from the theoretical pigment composition. Responses to environmental factors were also analysed. The results revealed that lutein and xanthophyll cycle pigments (VAZ) were highly responsive to the environment, emphasizing the high phenotypic plasticity of VAZ, whereas neoxanthin was very stable. The present meta-analysis supports the existence of relatively narrow limits for pigment ratios and also supports the presence of a pool of free 'unbound' VAZ. Results from this study provide highly reliable ranges of photosynthetic pigment contents as a framework for future research on plant pigments. © 2014 New Phytologist Trust. Source


Papaefthimiou D.,Institute of Agrobiotechnology | Aligizaki K.,Aristotle University of Thessaloniki | Nikolaidis G.,Aristotle University of Thessaloniki
Harmful Algae | Year: 2010

The clarification of the identity of the prominent Dinophysis morphotype in Greek coastal waters, characterized until now as D. cf. acuminata, has become a major challenge since the first DSP outbreak in the year 2000. So far, definite identification of the morphotype at the species level has been a taunting task, since both morphological and common molecular tools have proved fairly inefficient towards this direction. Recently, the mitochondrial gene region encoding for the cytochrome c oxidase subunit I (cox1) has been opted for its efficiency to discriminate at the species level within the Dinophysis acuminata complex. Using both ribosomal and mitochondrial genetic sequence data, we have shown that the species D. cf. acuminata described from Greek coastal waters is actually more related to D. ovum. The implications involved with present molecular tools in deciphering taxonomic relationships among species belonging to the genus Dinophysis are also discussed. © 2010 Elsevier B.V. Source


Bosmali I.,Technological Educational Institute of Larissa | Ganopoulos I.,Aristotle University of Thessaloniki | Ganopoulos I.,Institute of Agrobiotechnology | Madesis P.,Institute of Agrobiotechnology | And 2 more authors.
Food Research International | Year: 2012

Lentil (Lens culinaris) is an important legume crop worldwide, consumed as dried seeds. Correct identification of lentil varieties is important in order to ensure food quality, safety, authenticity and health for consumers as well as high price from elite varieties for farmers and industry. Recently, DNA-based methods like the molecular markers microsatellites (SSRs) for nuclear DNA or the DNA barcoding which uses chloroplast or nuclear DNA have been developed for plant species or variety identification, for genotyping and for identification of their ingredients in the final food products. Here we have integrated High Resolution Melting (HRM) analysis, coupled with five SSR markers in parallel with rpoC1 chloroplast DNA barcode targeting region, in order to facilitate the identification of Protected Geographical Indication (PGI) lentil variety 'Eglouvi'. The five SSR loci used were informative and generated a unique melting curve profile of microsatellites for each of the ten varieties tested. SSRs enabled the distinction and identification of the "Eglouvi" lentil PGI variety and furthermore they allowed the traceability of "Eglouvi" and the identification of lentil varieties admixtures of 50%. In addition, the application of the Barcode DNA High Resolution Melting (Bar-HRM) method on the species specific plant DNA barcoding region rpoC1, allowed not only the identification of adulterations but also the quantification of the most common lentil admixture. Bar-HRM detected Vicia sativa adulterants in Lens esculentum pure seed mix as low as 1:100. Hence, these assays provided flexible, cost-effective, and closed-tube SSR-HRM and Bar-HRM genotyping methods, well suited to identify adulterants in variety and species level and to food forensic uses in food products. © 2011 Elsevier Ltd. Source


Madesis P.,Institute of Agrobiotechnology | Ganopoulos I.,Aristotle University of Thessaloniki | Anagnostis A.,Institute of Agrobiotechnology | Tsaftaris A.,Aristotle University of Thessaloniki | Tsaftaris A.,Institute of Agrobiotechnology
Food Control | Year: 2012

The Leguminoseae family includes several economically important genera like legumes. Legumes are the second most important agricultural family after cereals in terms of harvested area and production. Legumes are key elements in the Mediterranean diet and as winter annuals with nitrogen fixing capacity, they are extremely important for sustainable agriculture worldwide. We report here the application of the Bar-HRM (Barcode DNA High Resolution Melting) analysis method with the universal plant DNA barcoding region trnL which allowed the identification, adulteration and quantification of major Greek and Mediterranean in general bean species. Bar-HRM detected Lupinus spp. adulterants in Glycine max flour as low as 1:100. Moreover, the method was coupled with the rapid Phire PCR kit that does not require prior DNA purification. This makes the method a very fast and effective tool for barcoding Legumes and particularly for the crops examined not only for their authenticity but for quantitative detection of purity of their seeds or their processed food and feed products. © 2011 Elsevier Ltd. Source


Reina R.,Institute of Agrobiotechnology | de Andres D.,Institute of Agrobiotechnology | Amorena B.,Institute of Agrobiotechnology
Viruses | Year: 2013

Multisystemic disease caused by Small Ruminant Lentiviruses (SRLV) in sheep and goats leads to production losses, to the detriment of animal health and welfare. This, together with the lack of treatments, has triggered interest in exploring different strategies of immunization to control the widely spread SRLV infection and, also, to provide a useful model for HIV vaccines. These strategies involve inactivated whole virus, subunit vaccines, DNA encoding viral proteins in the presence or absence of plasmids encoding immunological adjuvants and naturally or artificially attenuated viruses. In this review, we revisit, comprehensively, the immunization strategies against SRLV and analyze this double edged tool individually, as it may contribute to either controlling or enhancing virus replication and/or disease. © 2013 by the authors; licensee MDPI, Basel, Switzerland. Source

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