LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 29

Search options

  1. Article ; Online: Epigenetic Control in Plants.

    Brukhin, Vladimir

    Epigenomes

    2020  Volume 4, Issue 3

    Abstract: Epigenetic regulation in plants is an exciting field of research [ ... ]. ...

    Abstract Epigenetic regulation in plants is an exciting field of research [...].
    Language English
    Publishing date 2020-07-01
    Publishing country Switzerland
    Document type Editorial
    ISSN 2075-4655
    ISSN (online) 2075-4655
    DOI 10.3390/epigenomes4030011
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  2. Article: Epigenetic Control in Plants

    Brukhin, Vladimir

    Epigenomes. 2020 July 01, v. 4, no. 3

    2020  

    Abstract: Epigenetic regulation in plants is an exciting field of research [ ... ] ...

    Abstract Epigenetic regulation in plants is an exciting field of research [...]
    Keywords epigenetics ; planting ; research
    Language English
    Dates of publication 2020-0701
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    Note NALT-AP-4-rerunAP2-fuzzy
    ISSN 2075-4655
    DOI 10.3390/epigenomes4030011
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Article ; Online: Epigenetic Modifications in Plant Development and Reproduction.

    Brukhin, Vladimir / Albertini, Emidio

    Epigenomes

    2021  Volume 5, Issue 4

    Abstract: Plants are exposed to highly fluctuating effects of light, temperature, weather conditions, and many other environmental factors throughout their life. As sessile organisms, unlike animals, they are unable to escape, hide, or even change their position. ... ...

    Abstract Plants are exposed to highly fluctuating effects of light, temperature, weather conditions, and many other environmental factors throughout their life. As sessile organisms, unlike animals, they are unable to escape, hide, or even change their position. Therefore, the growth and development of plants are largely determined by interaction with the external environment. The success of this interaction depends on the ability of the phenotype plasticity, which is largely determined by epigenetic regulation. In addition to how environmental factors can change the patterns of genes expression, epigenetic regulation determines how genetic expression changes during the differentiation of one cell type into another and how patterns of gene expression are passed from one cell to its descendants. Thus, one genome can generate many 'epigenomes'. Epigenetic modifications acquire special significance during the formation of gametes and plant reproduction when epigenetic marks are eliminated during meiosis and early embryogenesis and later reappear. However, during asexual plant reproduction, when meiosis is absent or suspended, epigenetic modifications that have arisen in the parental sporophyte can be transmitted to the next clonal generation practically unchanged. In plants that reproduce sexually and asexually, epigenetic variability has different adaptive significance. In asexuals, epigenetic regulation is of particular importance for imparting plasticity to the phenotype when, apart from mutations, the genotype remains unchanged for many generations of individuals. Of particular interest is the question of the possibility of transferring acquired epigenetic memory to future generations and its potential role for natural selection and evolution. All these issues will be discussed to some extent in this review.
    Language English
    Publishing date 2021-11-19
    Publishing country Switzerland
    Document type Journal Article ; Review
    ISSN 2075-4655
    ISSN (online) 2075-4655
    DOI 10.3390/epigenomes5040025
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Article: Epigenetic Modifications in Plant Development and Reproduction

    Brukhin, Vladimir / Albertini, Emidio

    Epigenomes. 2021 Nov. 19, v. 5, no. 4

    2021  

    Abstract: Plants are exposed to highly fluctuating effects of light, temperature, weather conditions, and many other environmental factors throughout their life. As sessile organisms, unlike animals, they are unable to escape, hide, or even change their position. ... ...

    Abstract Plants are exposed to highly fluctuating effects of light, temperature, weather conditions, and many other environmental factors throughout their life. As sessile organisms, unlike animals, they are unable to escape, hide, or even change their position. Therefore, the growth and development of plants are largely determined by interaction with the external environment. The success of this interaction depends on the ability of the phenotype plasticity, which is largely determined by epigenetic regulation. In addition to how environmental factors can change the patterns of genes expression, epigenetic regulation determines how genetic expression changes during the differentiation of one cell type into another and how patterns of gene expression are passed from one cell to its descendants. Thus, one genome can generate many ‘epigenomes’. Epigenetic modifications acquire special significance during the formation of gametes and plant reproduction when epigenetic marks are eliminated during meiosis and early embryogenesis and later reappear. However, during asexual plant reproduction, when meiosis is absent or suspended, epigenetic modifications that have arisen in the parental sporophyte can be transmitted to the next clonal generation practically unchanged. In plants that reproduce sexually and asexually, epigenetic variability has different adaptive significance. In asexuals, epigenetic regulation is of particular importance for imparting plasticity to the phenotype when, apart from mutations, the genotype remains unchanged for many generations of individuals. Of particular interest is the question of the possibility of transferring acquired epigenetic memory to future generations and its potential role for natural selection and evolution. All these issues will be discussed to some extent in this review.
    Keywords embryogenesis ; epigenetics ; gene expression ; genotype ; meiosis ; natural selection ; phenotype ; phenotypic plasticity ; plant development ; plant reproduction ; sexual reproduction ; sporophytes ; temperature ; weather
    Language English
    Dates of publication 2021-1119
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ISSN 2075-4655
    DOI 10.3390/epigenomes5040025
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article ; Online: A brief note on genes that trigger components of apomixis.

    Brukhin, Vladimir / Baskar, Ramamurthy

    Journal of biosciences

    2019  Volume 44, Issue 2

    Abstract: Apomixis or asexual reproduction through seeds occurs in about 400 species of flowering plants producing genetically uniform progeny. During apomixis, meiosis is bypassed and embryos develop by parthenogenesis. However, the endosperm could form either ... ...

    Abstract Apomixis or asexual reproduction through seeds occurs in about 400 species of flowering plants producing genetically uniform progeny. During apomixis, meiosis is bypassed and embryos develop by parthenogenesis. However, the endosperm could form either autonomously without fertilization or sexually, depending on the plant species. Most probably, a heterochronic expression of sexually expressed genes is one of the reason that causes apomixis. A better understanding of the genetic components regulating apomixis is important for developmental and evolutionary studies and also for engineering apomixis traits into crop plants that may realize a possibility to propagate hybrid vigor in a range of subsequent generations.
    MeSH term(s) Apomixis/genetics ; Biological Evolution ; Gene Expression Regulation, Plant ; Gene Ontology ; Genes, Plant ; Molecular Sequence Annotation ; Phylogeny ; Plants/classification ; Plants/genetics ; Seeds/genetics
    Language English
    Publishing date 2019-06-09
    Publishing country India
    Document type Journal Article ; Review
    ZDB-ID 756157-x
    ISSN 0973-7138 ; 0250-5991
    ISSN (online) 0973-7138
    ISSN 0250-5991
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 1907: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  6. Article: A brief note on genes that trigger components of apomixis

    Brukhin, Vladimir / Baskar, Ramamurthy

    Journal of biosciences. 2019 June, v. 44, no. 2

    2019  

    Abstract: Apomixis or asexual reproduction through seeds occurs in about 400 species of flowering plants producing genetically uniform progeny. During apomixis, meiosis is bypassed and embryos develop by parthenogenesis. However, the endosperm could form either ... ...

    Abstract Apomixis or asexual reproduction through seeds occurs in about 400 species of flowering plants producing genetically uniform progeny. During apomixis, meiosis is bypassed and embryos develop by parthenogenesis. However, the endosperm could form either autonomously without fertilization or sexually, depending on the plant species. Most probably, a heterochronic expression of sexually expressed genes is one of the reason that causes apomixis. A better understanding of the genetic components regulating apomixis is important for developmental and evolutionary studies and also for engineering apomixis traits into crop plants that may realize a possibility to propagate hybrid vigor in a range of subsequent generations.
    Keywords Angiospermae ; apomixis ; asexual reproduction ; crops ; endosperm ; engineering ; genes ; heterosis ; meiosis ; parthenogenesis ; progeny ; seeds
    Language English
    Dates of publication 2019-06
    Size p. 45.
    Publishing place Springer India
    Document type Article
    Note Review
    ZDB-ID 756157-x
    ISSN 0973-7138 ; 0250-5991
    ISSN (online) 0973-7138
    ISSN 0250-5991
    DOI 10.1007/s12038-019-9850-1
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 5290: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  7. Article: Phylogenetic and Expression Analysis of CENH3 and APOLLO Genes in Sexual and Apomictic Boechera Species

    Bakin, Evgeny / Sezer, Fatih / Özbilen, Aslıhan / Kilic, Irem / Uner, Buket / Rayko, Mike / Taskin, Kemal Melih / Brukhin, Vladimir

    Plants. 2022 Jan. 30, v. 11, no. 3

    2022  

    Abstract: Apomictic plants (reproducing via asexual seeds), unlike sexual individuals, avoid meiosis and egg cell fertilization. Consequently, apomixis is very important for fixing maternal genotypes in the next plant generations. Despite the progress in the study ...

    Abstract Apomictic plants (reproducing via asexual seeds), unlike sexual individuals, avoid meiosis and egg cell fertilization. Consequently, apomixis is very important for fixing maternal genotypes in the next plant generations. Despite the progress in the study of apomixis, molecular and genetic regulation of the latter remains poorly understood. So far APOLLO gene encoding aspartate glutamate aspartate aspartate histidine exonuclease is one of the very few described genes associated with apomixis in Boechera species. The centromere-specific histone H3 variant encoded by CENH3 gene is essential for cell division. Mutations in CENH3 disrupt chromosome segregation during mitosis and meiosis since the attachment of spindle microtubules to a mutated form of the CENH3 histone fails. This paper presents in silico characteristic of APOLLO and CENH3 genes, which may affect apomixis. Furthermore, we characterize the structure of CENH3 by bioinformatic tools, study expression levels of APOLLO and CENH3 transcripts by Real-Time Polymerase Chain Reaction RT-PCR in gynoecium/siliques of the natural diploid apomictic and sexual Boechera species at the stages of meiosis and before and after fertilization. While CENH3 was a single copy gene in all Boechera species, the APOLLO gene have several polymorphic alleles associated with sexual and apomictic reproduction in the Boechera genera. Expression of the APOLLO apo-allele during meiosis was upregulated in gynoecium of apomict B. divaricarpa downregulating after meiosis until the 4th day after pollination (DAP). On the 5th DAP, expression in apomictic siliques increased again. In sexual B. stricta gynoecium and siliques APOLLO apo-allele did not express. Expression of the APOLLO sex-allele during and after meiosis in gynoecium of sexual plants was several times higher than that in apomictic gynoecium. However, after pollination the sex-allele was downregulated in sexual siliques to the level of apomicts and increased sharply on the 5th DAP, while in apomictic siliques it almost did not express. At the meiotic stage, the expression level of CENH3 in the gynoecium of apomicts was two times lower than that of the sexual Boechera, decreasing in both species after meiosis and keep remaining very low in siliques of both species for several days after artificial pollination until the 4th DAP, when the expression level raised in sexual B. stricta siliques exceeding 5 times the level in apomictic B. divaricarpa siliques. We also discuss polymorphism and phylogeny of the APOLLO and CENH3 genes. The results obtained may indicate to a role of the CENH3 and APOLLO genes in the development of apomixis in species of the genus Boechera.
    Keywords apomixis ; aspartic acid ; bioinformatics ; chromosome segregation ; computer simulation ; diploidy ; glutamic acid ; gynoecium ; histidine ; histones ; meiosis ; microtubules ; mitosis ; ova ; phylogeny ; pollination ; quantitative polymerase chain reaction ; siliques
    Language English
    Dates of publication 2022-0130
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2704341-1
    ISSN 2223-7747
    ISSN 2223-7747
    DOI 10.3390/plants11030387
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Article: Phylogenetic and Expression Analysis of

    Bakin, Evgeny / Sezer, Fatih / Özbilen, Aslıhan / Kilic, Irem / Uner, Buket / Rayko, Mike / Taskin, Kemal Melih / Brukhin, Vladimir

    Plants (Basel, Switzerland)

    2022  Volume 11, Issue 3

    Abstract: Apomictic plants (reproducing via asexual seeds), unlike sexual individuals, avoid meiosis and egg cell fertilization. Consequently, apomixis is very important for fixing maternal genotypes in the next plant generations. Despite the progress in the study ...

    Abstract Apomictic plants (reproducing via asexual seeds), unlike sexual individuals, avoid meiosis and egg cell fertilization. Consequently, apomixis is very important for fixing maternal genotypes in the next plant generations. Despite the progress in the study of apomixis, molecular and genetic regulation of the latter remains poorly understood. So far
    Language English
    Publishing date 2022-01-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704341-1
    ISSN 2223-7747
    ISSN 2223-7747
    DOI 10.3390/plants11030387
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  9. Article ; Online: Tragopogon pratensis: Multiple introductions to North America, circumscription, and the formation of the allotetraploid T. miscellus

    Soltis, Douglas E. / Mavrodiev, Evgeny V. / Brukhin, Vladimir / Roalson, Eric H. / Albach, Dirk C. / Godden, Grant T. / Alexeev, Yuri E. / Gitzendanner, Matthew A. / Freeman, Craig C. / Suárez‐Santiago, Víctor N. / Soltis, Pamela S.

    TAXON. 2023 Aug., v. 72, no. 4 p.848-861

    2023  

    Abstract: Tragopogon (Asteraceae) includes two recently and repeatedly formed allopolyploids, T. mirus and T. miscellus, both of which formed in western North America following the human‐mediated introduction of three diploids from Europe: T. dubius, T. ... ...

    Abstract Tragopogon (Asteraceae) includes two recently and repeatedly formed allopolyploids, T. mirus and T. miscellus, both of which formed in western North America following the human‐mediated introduction of three diploids from Europe: T. dubius, T. porrifolius, and T. pratensis. We recently investigated the genetics of the introduction history to North America of T. dubius, the shared parent of both allopolyploids. Here, we investigate the introduction of T. pratensis into North America, the second diploid parent of T. miscellus. Using ITS sequence data, we found that T. pratensis as currently defined in the narrow sense is polyphyletic and comprises at least four different major ITS types in its native range. Of these native range ITS patterns, two have been introduced from Europe into North America and now occur widely across Canada and the U.S.A. Although the allotetraploid T. miscellus formed multiple times in western North America, only one of these ITS types was involved in the recurrent formations. These results for T. pratensis parallel our findings for T. dubius and further suggest that not all genotypes of these two species may be able to participate in the formation of allopolyploids. Our phylogenetic analyses reveal that several entities traditionally considered part of T. pratensis in the narrow sense are genetically distinct and mark unique lineages that may ultimately merit recognition as separate species. This proclivity for genetically distinct entities (potential cryptic species) within species recognized based on morphology appears common in Tragopogon. To unravel the complexities of what is referred to as “T. pratensis”, more intensive phylogenetic analyses involving many more samples from across the geographic range of the species are required, as are detailed assessments of taxonomy, morphology, and cytology.
    Keywords Tragopogon pratensis ; allotetraploidy ; cryptic species ; diploidy ; geographical distribution ; polyphyly ; taxonomy ; Canada ; Europe
    Language English
    Dates of publication 2023-08
    Size p. 848-861.
    Publishing place John Wiley & Sons, Inc.
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 204216-2
    ISSN 0040-0262
    ISSN 0040-0262
    DOI 10.1002/tax.12936
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 4975: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  10. Article: First Genome of Rock Lizard Darevskia valentini Involved in Formation of Several Parthenogenetic Species

    Ochkalova, Sofia / Korchagin, Vitaly / Vergun, Andrey / Urin, Avel / Zilov, Danil / Ryakhovsky, Sergei / Girnyk, Anastasiya / Martirosyan, Irena / Zhernakova, Daria V. / Arakelyan, Marine / Danielyan, Felix / Kliver, Sergei / Brukhin, Vladimir / Komissarov, Aleksey / Ryskov, Alexey

    Genes. 2022 Sept. 01, v. 13, no. 9

    2022  

    Abstract: The extant reptiles are one of the most diverse clades among terrestrial vertebrates and one of a few groups with instances of parthenogenesis. Due to the hybrid origin of parthenogenetic species, reference genomes of the parental species as well as of ... ...

    Abstract The extant reptiles are one of the most diverse clades among terrestrial vertebrates and one of a few groups with instances of parthenogenesis. Due to the hybrid origin of parthenogenetic species, reference genomes of the parental species as well as of the parthenogenetic progeny are indispensable to explore the genetic foundations of parthenogenetic reproduction. Here, we report on the first genome assembly of rock lizard Darevskia valentini, a paternal species for several parthenogenetic lineages. The novel genome was used in the reconstruction of the comprehensive phylogeny of Squamata inferred independently from 7369 trees of single-copy orthologs and a supermatrix of 378 conserved proteins. We also investigated Hox clusters, the loci that are often regarded as playing an important role in the speciation of animal groups with drastically diverse morphology. We demonstrated that Hox clusters of D. valentini are invaded with transposons and contain the HoxC1 gene that has been considered to be lost in the amniote ancestor. This study provides confirmation for previous works and releases new genomic data that will contribute to future discoveries on the mechanisms of parthenogenesis as well as support comparative studies among reptiles.
    Keywords Squamata ; ancestry ; genes ; genome assembly ; genomics ; hybrids ; lizards ; parthenogenesis ; phylogeny ; progeny ; transposons
    Language English
    Dates of publication 2022-0901
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2527218-4
    ISSN 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes13091569
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top