Avena

Лоскутов, И. Г.; Rines, H. W.

doi:10.1007/978-3-642-14228-4_3

Cited by 85 publications

(76 citation statements)

References 283 publications

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“…The grains of oats are superior among other cereals due to relatively high content of lipids, health beneficial lipid and protein composition, the high betaglucan to arabinoxylan ratio and the abundance of various phytonutrients that renders them valuable source of dietary compounds (Araus and Cairns 2014;Banaś et al 2007;Biel et al 2009;Kueger et al 2012;Loskutov and Rines 2011;Vernocchi et al 2011;Vilmane et al 2015). Exploration of natural variability in these traits is important for the selection of valuable gene donors for breeding oriented to improved grain quality.…”

Section: Discussionmentioning

confidence: 99%

Environmentally-related genotypic, phenotypic and metabolic diversity of oat (Avena sativa L.) landraces based on 67 Polish accessions

Boczkowska

Żebrowski

Nowosielski

et al. 2017

Genet Resour Crop Evol

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Here we focused on Polish oat landraces developed in the moderate temperature zone attempting to understand their genetic and phenotypic variability in context of the pressure of environmental constrains at the locations where they had evolved. Besides molecular markers and diverse phenotypic traits the Fourier transform infrared (FTIR) spectroscopy, enabling throughput metabolic fingerprinting, was used for the description of the germplasm collection. We used sophisticated multivariable analysis to integrate the data for structure analysis and to establish mutual relationships. We found that the accessions diversity across the eco-geographical variables was manifested differently depending on selected phenotypic, genetic, and metabolic criteria.Grain metabolic fingerprint derived from FTIR spectroscopy revealed the highest degree of germplasm diversity among all of the examined traits, particularly for spectral bands assigned to lipids. The landraces, which were collected in close geographical proximity, showed clear morphological and metabolic resemblances, although they represented quite different genetic backgrounds. All three levels of analysis showed the presence of selection resulting from environmental pressures and more specifically from the temperature at the landrace origin site. This research also proved that coupling of genetic polymorphism with the FTIR fingerprinting markedly extended the description of the oat landraces diversity.

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Section: Discussionmentioning

confidence: 99%

Environmentally-related genotypic, phenotypic and metabolic diversity of oat (Avena sativa L.) landraces based on 67 Polish accessions

Boczkowska

Żebrowski

Nowosielski

et al. 2017

Genet Resour Crop Evol

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“…The genus Avena is considered to be an important gene pool for oat improvement (Loskutov and Rines 2011), and many alleles conferring disease resistance have been introgressed from wild oat germplasm into cultivated oat (Thomas et al 1975;Rooney et al 1994). Other traits such as plant height (Frey 1991) and spikelet number (Loskutov and Rines 2011) show potentially useful genetic variation in wild oat species.…”

Section: Introductionmentioning

confidence: 99%

Genome size variation in the genus Avena

Yan

Martin

Bekele

et al. 2016

Genome

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Abstract:Genome size is an indicator of evolutionary distance and a metric for genome characterization. Here, we report accurate estimates of genome size in 99 accessions from 26 species of Avena. We demonstrate that the average genome size of C genome diploid species (2C = 10.26 pg) is 15% larger than that of A genome species (2C = 8.95 pg), and that this difference likely accounts for a progression of size among tetraploid species, where AB < AC < CC (average 2C = 16.76, 18.60, and 21.78 pg, respectively). All accessions from three hexaploid species with the ACD genome configuration had similar genome sizes (average 2C = 25.74 pg). Genome size was mostly consistent within species and in general agreement with current information about evolutionary distance among species. Results also suggest that most of the polyploid species in Avena have experienced genome downsizing in relation to their diploid progenitors. Genome size measurements could provide additional quality control for species identification in germplasm collections, especially in cases where diploid and polyploid species have similar morphology.Key words: oat, flow cytometry, nucleus, polyploidy.Résumé : La taille du génome est un indicateur de la distance évolutive et constitue un paramètre pour la caractéri-sation des génomes. Ici, les auteurs rapportent des estimés précis de la taille du génome chez 99 accessions appartenant à 26 espèces du genre Avena. Les auteurs montrent que la taille moyenne du génome chez les espèces diploïdes ayant un génome C (2C = 10,26 pg) est 15 % supérieure à celui des espèces ayant un génome A (2C = 8,95 pg), et que cette différence explique vraisemblablement la progression dans la taille des génomes parmi les espèces tétraploïdes, où AB < AC < CC (en moyenne, 2C = 16,76, 18,60 et 21,78 pg, respectivement). Toutes les accessions des trois espèces hexaploïdes ayant une composition génomique ACD présentaient des tailles de génome comparables (en moyenne, 2C = 25,74 pg). La taille du génome était généralement stable au sein d'une espèce, et conforme aux connaissances actuelles en ce qui a trait aux distances évolutives entre elles. Les résultats suggèrent également que la plupart des espèces polyploïdes du genre Avena ont connu une réduction de la taille du génome par rapport aux espèces diploïdes ancestrales. Les mesures de la taille du génome pourraient fournir une source additionnelle de contrôle de qualité lors de l'identification des espèces au sein de collections de ressources génétiques, particulièrement dans les cas où des espèces diploïdes et polyploïdes présentent une morphologie semblable. [Traduit par la Rédaction] Mots-clés : avoine, cytométrie en flux, noyau, polyploïdie.

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“…Овес посевной (Avena sativa L.) -одна из самых пер-спективных и востребованных в настоящее время сель-скохозяйственных культур, поскольку обладает рядом цен-ных свойств, отвечающих требованиям, предъявляемым к продуктам «функционального питания», и позволяющих использовать его в кормовых и медико-профилакти че-ских целях (Лоскутов, 2007;Leonova et al, 2008;Loskutov, Rines, 2011). Овсяное зерно отличают белки, лучше сба-лансированные по аминокислотному составу в сравне-нии с белками других зерновых, в частности имеющие повышенное содержание незаменимых аминокислот (аргинина, гистидина, лизина, триптофана) (Лоскутов, 2007; Конарев и др., 2015).…”

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The metabolomic approach to the comparative analysis of wild and cultivated species of oats (Avena L.)

Лоскутов¹,

Шеленга²,

Конарев³

et al. 2016

Vestn. VOGiS

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Seed metabolomic profiles have been investigated in wild and cultivated forms (cultivars) of oat (Avena L.). Seed accessions from the VIR oat collection were used for the research. Metabolomic analysis employed gas liquid chromatography-mass spectrometry (GLC-MS) using an Agilent 6850 chromatographer (USA). The analysis covered the composition and content of organic and fatty acids, amino acids, polyatomic spirits and sugars. The content fluctuation range for the studied groups of compounds was found to be narrower (significantly in some cases) in cultivars than in the wild species. Along with a sharp increase in oleic acid content, cultivars demonstrated a decrease in that of linoleic acid. The general conclusions from the comparison of seed metabolomic profiles in wild species and cultivars are presented below. A number of wild species can be recommended as a potential source of biochemical quality traits for breeding purposes. A series of metabolites (compounds), the content of which changes during domestication or which differentiate wild oat species from cultivars has been identified was found. Along with such well-known healthy food chemical factors as oleic acid, glucose and fructose, etc., differences concerning monoacylglycerol compounds (MAG 16 : 0 and MAG-2 18 : 2, etc.) have been found. The latter have been proposed to be related to the formation of adaptive traits, in particular, resistance to diseases and pests, and to environmental abiotic stresses.Key words: Avena L.; wild species; varieties, seeds; gas chromatography; mass spectrometry; metabolomics; amelioration; adaptability and polymorphism of characters.Исследовались метаболомные спектры зерновок диких и куль ти-вируемых форм (сортов) овса (Avena L.). Материалом для изучения служили образцы семян из коллекции ВИР. Метаболомные иссле-дования (анализ метаболома) проводили методом газожидкостной хроматографии с масс-спектрометрией (ГЖХ-МС) на хроматографе Agilent 6850 (CША). Анализировали состав и содержание органи-ческих и жирных кислот, аминокислот, многоатомных спиртов и сахаров. Установлено, что у сортов по сравнению с дикими видами сузился (в ряде случаев существенно) диапазон колеба-ния значений содержания изученных групп соединений. Наряду с резким увеличением содержания олеиновой кислоты у сортов снизилось содержание линолевой кислоты. В целом сравнение метаболомных спектров зерновок диких видов и сортов позво-лило сделать следующие основные выводы. Ряд дикорастущих видов овса может быть рекомендован в качестве потенциального источника биохимических признаков качества при селекции. Выявлены метаболиты, содержание которых меняется в процессе окультуривания или по которым дикие виды овса отличаются от сортов этой культуры. Среди этих соединений наряду с такими широко известными составляющими здорового питания, как олеиновая кислота, глюкоза, фруктоза и др., выявлены моноацил-глицеролы -МАГ 16 : 0, МАГ-2 18 : 2 и др. Высказано предположение, что последние могут быть связаны с формированием признаков адаптивности, в частности с устойчивость...

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Avena

Cited by 85 publications

References 283 publications

Environmentally-related genotypic, phenotypic and metabolic diversity of oat (Avena sativa L.) landraces based on 67 Polish accessions

Environmentally-related genotypic, phenotypic and metabolic diversity of oat (Avena sativa L.) landraces based on 67 Polish accessions

Genome size variation in the genus Avena

The metabolomic approach to the comparative analysis of wild and cultivated species of oats (Avena L.)

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