146 results match your criteria: "Centre of Excellence for Biodiversity and Molecular Plant Breeding[Affiliation]"

Background: Croatia is a geographically small country with a remarkable diversity of cultivated and spontaneous grapevines. Local germplasm has been characterised by microsatellite markers, but a detailed analysis based on single nucleotide polymorphisms (SNPs) is still lacking. Here we characterize the genetic diversity of 149 accessions from three germplasm repositories and four natural sites using 516,101 SNPs to identify complete parent-offspring trios and their relations with spontaneous populations, offering a proof-of-concept for the use of reduced-representation genome sequencing in population genetics and genome-wide association studies (GWAS).

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Understanding genotype-specific responses to environmental stressors is vital for developing resilience strategies that ensure sustainable olive cultivation and productivity. In this work, cultivar 'Oblica' and several olive genotypes from the island of Mljet (Croatia) were exposed to short-term (21 days) salinity and drought treatments. In contrast to other olive genotypes, genotype M29 as well as cultivar 'Oblica' managed to maintain growth and chlorophyll levels under salinity stress to the same level as the control.

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Asynchronous ripening is a significant challenge in winemaking. Green berries reduce alcohol and pH while increasing acidity. Green berries are rich in bitter and astringent compounds, with an unknown impact on wine quality.

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The flowering and fruit set of grapevines are determined by many morphological, physiological, and environmental factors. Although the elemental composition of pollen grains plays a crucial role in the fruit set, there is still a considerable gap in our knowledge. To date, no study has been conducted on the elemental composition of subsp.

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Trypsin inhibitors (TI) in raw soybean grain, mainly represented by the Kunitz trypsin inhibitor protein (KTI), prevent the normal activity of the digestive enzymes trypsin and chymotrypsin in humans and monogastric livestock. The inactivation of TI is achieved through costly and time-consuming heat treatment. Thermal processing also impairs the solubility and availability of the soybean grain protein.

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The Mediterranean region's harsh conditions, characterized by low rainfall, high solar radiation, and elevated temperatures, pose challenges for vegetation, particularly in the face of climate change. Cultivated olive ( subsp. var.

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How we look: European wild mouflon and feral domestic sheep hybrids.

Curr Zool

June 2024

Faculty of Agriculture, Department of Plant Breeding, Genetics and Biometrics, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia.

Hybridization between wild animals and feral individuals from closely related domestic species can occur when they share the same habitat. Such events are generally regarded as a threat to the genetic integrity and survival of established wild populations. The aim of this study is to confirm a hybridization between European mouflon and feral sheep on the Adriatic island Dugi Otok, where a group of individuals phenotypically indicative of a possible introgression was photographed.

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Article Synopsis
  • The study examines the synthesis and variation of pyrethrin, an insecticidal compound from Dalmatian pyrethrum, across 15 natural populations in the eastern Mediterranean.
  • Researchers implemented a controlled field experiment to analyze pyrethrin content, aiming to attribute differences to genetic adaptations influenced by specific bioclimatic conditions.
  • Results revealed significant variation in pyrethrin levels among populations, with the highest concentrations found in Budva and Podgorica, and five distinct bioclimatic groups formed based on environmental factors affecting pyrethrin composition.
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Article Synopsis
  • The study examined the morphology and genetic structure of two plant species and their hybrid, highlighting continuous variation where hybrids are positioned between the parent species.
  • Genetic analysis confirmed that the hybrids are fertile and give rise to more hybrids, suggesting that hybridization leads to gene mixing (introgression) instead of the creation of new species (speciation).
  • Gene flow varied across three locations, with one site showing unidirectional flow favoring one species, while others exhibited asymmetric gene flow, leading to difficulties in distinguishing species due to past hybridization events.
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The lipoxygenase pathway has a significant influence on the composition of the volatile components of virgin olive oil (VOO). In this work, the influence of the maturity index (MI) on the activity of the lipoxygenase enzyme (LOX) in the fruits of the autochthonous Dalmatian olive cultivars Oblica, Levantinka and Lastovka was studied. The analysis of the primary oxidation products of linoleic acid in the studied cultivars showed that LOX synthesises a mixture of 9- and 13-hydroperoxides of octadecenoic acid in a ratio of about 1:2, which makes it a non-traditional plant LOX.

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Breeding resistant wheat cultivars to Fusarium head blight (FHB), caused by spp., is the best method for controlling the disease. The aim of this study was to estimate general combining ability (GCA) and specific combining ability (SCA) for FHB resistance in a set of eight genetically diverse winter wheat cultivars to identify potential donors of FHB resistance for crossing.

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Evolution of Leaf Chlorophylls, Carotenoids and Phenolic Compounds during Vegetation of Some Croatian Indigenous Red and White Grape Cultivars.

Plants (Basel)

March 2024

Division of Horticulture and Landscape Architecture, Department of Viticulture and Enology, Faculty of Agriculture, University of Zagreb, Svetošimunska Cesta 25, 10000 Zagreb, Croatia.

During the ripening process of grapes, the grapevine leaves are the most active green organs that are important for photosynthesis, which is closely linked to the development and metabolism of the plant. The detection of plant pigments and phenolic compounds in grapevine leaves can be a good indicator of the ageing process, vine vigor and the plant's ability to respond to fungal attack. In a one-year study, the development of leaf chlorophylls, carotenoids and phenolic compounds during the ripening of six indigenous Croatian grape cultivars and the international cultivars Merlot and Chardonnay was investigated.

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Article Synopsis
  • - Olive cultivation in Croatia is a significant tradition with economic and social benefits, and this study is the most extensive examination of olive genetic diversity in the country, involving 108 tree samples from 27 groves.
  • - Researchers used eight microsatellite loci to analyze the genetic diversity of the olive trees, discovering 90 alleles and 74 distinct genotypes that suggest complex relationships among the olive plants, structured into three main gene pools.
  • - The study also identified 44 known cultivars and 16 new local olive varieties, highlighting the need to protect local genetic resources and keep conducting research on olive diversity.
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Article Synopsis
  • - Simple sequence repeats (SSRs) are widely used molecular markers important for conservation genetics, population studies, and genetic mapping, benefiting from advances in next-generation sequencing and bioinformatics tools for their design.
  • - A new standalone pipeline has been developed to design PCR primers for microsatellite loci using multiple genomic assemblies from different species, assessing their polymorphism through in silico testing.
  • - This approach eliminates the need for labor-intensive lab tests, producing efficient and promising SSR markers that can help identify interspecies hybrids, with demonstrated success across various taxonomic levels.
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Article Synopsis
  • Range contraction and habitat fragmentation negatively affect biodiversity, impacting survival rates of plant populations by disrupting pollinator interactions.
  • The study focused on Salvia brachyodon, an endangered plant, revealing significant range reduction and isolation among populations, with mixed mating systems influencing reproduction.
  • Findings indicated that one population suffered from limited pollination due to ineffective pollinators, resulting in increased self-pollination and genetic differentiation influenced by environmental pressures.
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Patterns of Leaf and Fruit Morphological Variation in Marginal Populations of L. subsp. .

Plants (Basel)

January 2024

Department for Seed Science and Technology, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, HR-10000 Zagreb, Croatia.

Article Synopsis
  • Marginal populations, like Tatar maple, thrive in less favorable conditions and are essential for understanding how plants adapt to their environments.
  • Research analyzed the morphological variability of eight Tatar maple populations using leaf and fruit traits, revealing significant differences both within and between these populations.
  • Findings indicated that these edge populations display high morphological variability, aiding their adaptation to selective pressures, but showed no evidence of isolation by environment despite some patterns of isolation by distance.
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New insights in the Spanish gene pool of olive ( L.) preserved and based on high-throughput molecular markers.

Front Plant Sci

January 2024

Mejora Vegetal y Biotecnología, Instituto Andaluz de Investigación y Formación Agraria, Pesquera, Alimentaria y de la Producción Ecológica (IFAPA), Centro Alameda del Obispo, Córdoba, Spain.

Article Synopsis
  • Recent studies in Spain suggest the existence of unknown olive cultivars beyond the 260 already recognized, spurring a nationwide effort to identify and characterize these new types.
  • Utilizing 96 EST-SNP markers, researchers discovered 173 new genotypes from less intensively farmed areas, increasing the total known genotypes to 427 in a key germplasm bank.
  • This study confirmed significant genetic diversity in Spanish olives, highlighting differences between northern and southern regions, and emphasized the need to preserve various cultivars to sustain genetic variability, particularly as modern cultivation relies on a few dominant types.
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Ion exchange chromatography and SDS-PAGE followed by identification by MALDI-TOF/TOF, and two-dimensional gas chromatography with time-of-flight mass spectrometry (GC × GC-TOF-MS) were used for comprehensive proteomics and volatilomics evaluation of the effects of pre-fermentative oxygenation, skin contact and use of pectolytic enzymes in production of Malvazija istarska white wine, respectively. Many protein species and an unprecedented number of volatiles have been identified and (semi)quantified, revealing high complexity of the observed effects. Compared to a standard control wine, oxygenation treatment modulated the protein composition and resulted with a volatilome characterized by decreased levels of several important volatiles.

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Vinegar-Preserved Sea Fennel: Chemistry, Color, Texture, Aroma, and Taste.

Foods

October 2023

Department of Food Technology and Biotechnology, Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, HR-21000 Split, Croatia.

The aim of this study was to produce non-fermented preserved sea fennel leaves in different pickle juices prepared with apple cider vinegar, wine vinegar and alcoholic vinegar, and to compare their chemical parameters (pH, titratable acidity and salt content), organoleptic properties (color and texture parameters; volatile aromatic compound profiles) and sensory attributes. The pH of the samples ranged from 3.49 to 3.

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Carotenoids are an abundant group of lipid-soluble antioxidants in maize kernels. Maize is a key target crop for carotenoid biofortification focused on using conventional plant breeding in native germplasm of temperate areas traced back partially to traditional cultivars (landraces). In this study, the objectives were to determine the variability of lutein (LUT), zeaxanthin (ZEA), α-cryptoxanthin (αCX), β-cryptoxanthin (βCX), α-carotene (αC), and β-carotene (βC) contents in the grain of 88 accessions of temperate maize from the Croatian genebank, and to evaluate the relationships among the contents of different carotenoids as well as the relationships between kernel color and hardness and carotenoid content.

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The biochemical response and gene expression in different grapevine cultivars to water deficit are still not well understood. In this study, we investigated the performance of four traditional Croatian L. cultivars ('Plavac mali crni', 'Istrian Malvasia', 'Graševina', and 'Tribidrag'), and one wild ( subsp.

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The impacts of global climate change and a rapid increase in population have emerged as major concerns threatening global food security. Environmental abiotic stress, such as drought, severely impairs plants' morphology, physiology, growth, and yield more than many other environmental factors. Plants use a complex set of physiological, biochemical, and molecular mechanisms to combat the negative effects caused by drought-induced stress.

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The Mediterranean area is especially rich in old, both sweet and pungent, varieties of onion. The synthesis of phytochemicals takes place concurrently with the overall development and maturation of vegetables; however, it is unclear whether there is a correlation between onion bulb size and antioxidant compound content, antioxidant capacity, and nutritional parameters and what the origin of these variations is. The aim of this work was to investigate the biochemical and nutritional aspects of the sweet onion landrace "Premanturska kapula", as well as to investigate the influence of onion bulb size on onion phytochemical and nutritional profile.

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Population size as a major determinant of mating system and population genetic differentiation in a narrow endemic chasmophyte.

BMC Plant Biol

August 2023

Centre for Functional Ecology-Science for People & the Planet, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal.

Background: Mating system is one of the major determinants of intra- and interspecific genetic structure, but may vary within and between plant populations. Our study model included all known populations of Moehringia tommasinii (Caryophyllaceae), a narrow endemic plant inhabiting rock crevices in the northwestern Adriatic, and some populations of co-occurring and widespread M. muscosa, an ecologically divergent relative with an overlapping flowering period.

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