146 research outputs found
Fruits of the future: the results of the project ‘Fruits in line with science’
The paper covers the results of the civic science project that involved VIR partners – Russian Geographical Society, Russian Schoolchildren’s Movement and the Association of Communicators in Education and Science – as organizers and schoolchildren, students and their parents from different regions of Russia as participants. The project, started in 2020 with observations of a single crop – an apple tree, elicited a positive response from motivated schoolchildren and was continued in 2021–2022 with the inclusion of various fruit and berry crops. In the course of the three years of the project, a phenological database was replenished with 3340 entries made by 670 project participants
On the results of the 5th Vavilov International Conference (November 21–25, 2022)
Under the auspices of the 5th Vavilov International Conference held in St. Petersburg on 21–25 November 2022, eight events were held on the conservation, development, study and practical use of plant genetic resources (PGR) collections, as well as on the scientific heritage of Nikolay Ivanovich Vavilov and the development of the scientific schools founded by him and the activities of his associates and followers. In view of the modern context of new trends in the development of science, fundamental knowledge, modern methods and technologies, as well as of climatic and economic challenges, the development of the scientific heritage of N.I. Vavilov plays a big role for scientific and technological development. A total of 185 oral presentations was made at the 5th Vavilov International Conference. Meetings of the Conference attracted over 330 participants. This publication reflects the main objectives and content of the performed activities and contains key recommendations emanating from the Conference, including (1) recommendations for the conservation, study and use of PGR, including those on the multidisciplinary basis; (2) recommendations on activities to ensure coordination in the field of conservation, research, breeding and seed production; (3) recommendations on the normative and legislative regulation in the sphere of breeding, seed production, development, maintenance and use of genetic resource collections; (4) recommendations on training, guidance and education. Presentations made at the Conference show that over the past five years there has been a significant increase in the use of modern methodical approaches, i.e. molecular-genetic, genomic and omics in the field of PGR research. All this provides a solid basis for the development of new breeding methods (Next-Generation Breeding). At the same time, it is emphasized that new breeding technologies based on the acquired knowledge, can lead to further progress not in isolation from, but in conjunction with the amassed heritage of classical breeding. Among the discussed and proposed issues, the Conference Resolution identifies those requiring special and urgent attention: (1) the need to legislate for the preservation and expansion of crop diversity in the State Register of Varieties and Hybrids of Agricultural Plants Approved for Use; (2) the inadmissibility of reducing the list of these crops; (3) the inadmissibility of reducing of the number of state variety testing sites; (4) the inadmissibility of reducing of time limits of state variety testing from three to two years or one year; (5) the need to bring the concepts of “genetic passportˮ and “genetic passportizationˮ used in legal and regulatory acts to the canonical understanding of “genetic passportˮ as a document reflecting individual genetic features of an organism (cultivar/hybrid/breed/strain), which make it possible to distinguish its genotype from that of other organisms (cultivars/hybrids/breeds/ strains) of a particular species and the need to carefully elaborate methods of genetic certification of each crop, taking into account all types of genetic markers (molecular-genetic markers (DNA markers), protein and morphological markers). The Conference also noted that under the conditions of the increasing climate change and its sudden unpredictable fluctuations, reliable conservation of valuable plant genetic resources in situ and ex situ is required in order to avoid the irreversible loss of part of plant agrobiodiversity. In addition, extensive expeditionary surveys should be undertaken in the nearest future in crop and CWR diversity centers, under-explored areas, as well as in the regions with extreme environmental conditions and those prone to anthropogenic impacts
Performance characteristic of the NIH atlas small animal PET scanner
[Abstract] AMI International Conference 2003, September 21 - 27, Madrid, Spain: "High Resolution Molecular Imaging: from Basic Science to Clinical Applications"The Advanced Technology Laboratory Animal Scanner (ATLAS) is a small animal positron emission tomography (PET) scanner with depth-of-interaction (DOI) capability designed to image animals the size of mice and rats. We report performance measurements and show animal studies that suggest that ATLAS offers advantages over systems without DOI capabilityPublicad
Automatic morphology phenotyping of tetra- and hexaploid wheat spike using computer vision methods
Intraspecific classification of cultivated plants is necessary for the conservation of biological diversity, study of their origin and their phylogeny. The modern cultivated wheat species originated from three wild diploid ancestors as a result of several rounds of genome doubling and are represented by di-, tetra- and hexaploid species. The identification of wheat ploidy level is one of the main stages of their taxonomy. Such classification is possible based on visual analysis of the wheat spike traits. The aim of this study is to investigate the morphological characteristics of spikes for hexa- and tetraploid wheat species based on the method of high-performance phenotyping. Phenotyping of the quantitative characteristics of the spike of 17 wheat species (595 plants, 3348 images), including eight tetraploids (Triticum aethiopicum, T. dicoccoides, T. dicoccum, T. durum, T. militinae, T. polonicum, T. timopheevii, and T. turgidum) and nine hexaploids (T. compactum, T. aestivum, i:ANK-23 (near-isogenic line of T. aestivum cv. Novosibirskaya 67), T. antiquorum, T. spelta (including cv. Rother Sommer Kolben), T. petropavlovskyi, T. yunnanense, T. macha, T. sphaerococcum, and T. vavilovii), was performed. Wheat spike morphology was described on the basis of nine quantitative traits including shape, size and awns area of the spike. The traits were obtained as a result of image analysis using the WERecognizer program. A cluster analysis of plants according to the characteristics of the spike shape and comparison of their distributions in tetraploid and hexaploid species showed a higher variability of traits in hexaploid species compared to tetraploid ones. At the same time, the species themselves form two clusters in the visual characteristics of the spike. One type is predominantly hexaploid species (with the exception of one tetraploid, T. dicoccoides). The other group includes tetraploid ones (with the exception of three hexaploid ones, T. compactum, T. antiquorum, T. sphaerococcum, and i:ANK-23). Thus, it has been shown that the morphological characteristics of spikes for hexaploid and tetraploid wheat species, obtained on the basis of computer analysis of images, include differences, which are further used to develop methods for plant classifications by ploidy level and their species in an automatic mode
The INCREASE project: Intelligent Collections of food‐legume genetic resources for European agrofood systems
Food legumes are crucial for all agriculture-related societal challenges, including climate change mitigation, agrobiodiversity conservation, sustainable agriculture, food security and human health. The transition to plant-based diets, largely based on food legumes, could present major opportunities for adaptation and mitigation, generating significant co-benefits for human health. The characterization, maintenance and exploitation of food-legume genetic resources, to date largely unexploited, form the core development of both sustainable agriculture and a healthy food system. INCREASE will implement, on chickpea (Cicer arietinum), common bean (Phaseolus vulgaris), lentil (Lens culinaris) and lupin (Lupinus albus and L. mutabilis), a new approach to conserve, manage and characterize genetic resources. Intelligent Collections, consisting of nested core collections composed of single-seed descent-purified accessions (i.e., inbred lines), will be developed, exploiting germplasm available both from genebanks and on-farm and subjected to different levels of genotypic and phenotypic characterization. Phenotyping and gene discovery activities will meet, via a participatory approach, the needs of various actors, including breeders, scientists, farmers and agri-food and non-food industries, exploiting also the power of massive metabolomics and transcriptomics and of artificial intelligence and smart tools. Moreover, INCREASE will test, with a citizen science experiment, an innovative system of conservation and use of genetic resources based on a decentralized approach for data management and dynamic conservation. By promoting the use of food legumes, improving their quality, adaptation and yield and boosting the competitiveness of the agriculture and food sector, the INCREASE strategy will have a major impact on economy and society and represents a case study of integrative and participatory approaches towards conservation and exploitation of crop genetic resources
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Preliminary results from the CMD-2 detector
A new general-purpose detector CMD-2 (calorimetric magnetic detector has started experiments at the upgraded e{sup {plus}}e{sup {minus}} collider VEPP-2M (collider for electron-positron beams) at Novosibirsk. During early runs an integrated luminosity of about 400 inverse nanobarns has been collected in the center of mass energy range 400{endash}1030 MeV
Microbial diversity and biogeochemical cycling in soda lakes
Soda lakes contain high concentrations of sodium carbonates resulting in a stable elevated pH, which provide a unique habitat to a rich diversity of haloalkaliphilic bacteria and archaea. Both cultivation-dependent and -independent methods have aided the identification of key processes and genes in the microbially mediated carbon, nitrogen, and sulfur biogeochemical cycles in soda lakes. In order to survive in this extreme environment, haloalkaliphiles have developed various bioenergetic and structural adaptations to maintain pH homeostasis and intracellular osmotic pressure. The cultivation of a handful of strains has led to the isolation of a number of extremozymes, which allow the cell to perform enzymatic reactions at these extreme conditions. These enzymes potentially contribute to biotechnological applications. In addition, microbial species active in the sulfur cycle can be used for sulfur remediation purposes. Future research should combine both innovative culture methods and state-of-the-art ‘meta-omic’ techniques to gain a comprehensive understanding of the microbes that flourish in these extreme environments and the processes they mediate. Coupling the biogeochemical C, N, and S cycles and identifying where each process takes place on a spatial and temporal scale could unravel the interspecies relationships and thereby reveal more about the ecosystem dynamics of these enigmatic extreme environments
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