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  1. Article: Epichloë fungal endophytes and the formation of synthetic symbioses in Hordeeae (=Triticeae) grasses

    SIMPSON, Wayne R / FAVILLE, Marty J / MORAGA, Roger A / WILLIAMS, Warren M / MCMANUS, Michael T / JOHNSON, Richard D

    Journal of systematics and evolution. 2014 Nov., v. 52, no. 6

    2014  

    Abstract: This review examines two classes of organism that live in symbiosis; grasses, and fungi. Specifically it deals with grasses of the tribe Hordeeae (formerly Triticeae) of the subfamily Poöideae and the Epichloë fungi of family Clavicipitaceae. Epichloë ... ...

    Abstract This review examines two classes of organism that live in symbiosis; grasses, and fungi. Specifically it deals with grasses of the tribe Hordeeae (formerly Triticeae) of the subfamily Poöideae and the Epichloë fungi of family Clavicipitaceae. Epichloë endophytes, particularly asexual forms, have important roles in pastoral agricultural systems in the Americas, Australia, and New Zealand. Selected strains add value to some grass‐based forage systems by providing both biotic and abiotic stress resistance. The importance of cereal grasses such as wheat, barley, rye, and oats to human and animal nutrition and indeed to the foundation and maintenance of human civilization is well documented. Both organism classes, Epichloë endophytes and cereal grasses, are of great importance in their own contexts. Here, we seek to review these two classes of organism and examine the possibility of bringing them together in symbiosis with the ultimate goal of improving cereal production systems.
    Keywords Clavicipitaceae ; abiotic stress ; animal nutrition ; barley ; endophytes ; forage ; fungi ; grasses ; humans ; oats ; production technology ; rye ; stress tolerance ; symbiosis ; wheat ; Australia ; New Zealand
    Language English
    Dates of publication 2014-11
    Size p. 794-806.
    Publishing place Science Press
    Document type Article
    ZDB-ID 2516638-4
    ISSN 1759-6831 ; 1674-4918
    ISSN (online) 1759-6831
    ISSN 1674-4918
    DOI 10.1111/jse.12107
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Dicer is required for proper liver zonation

    Sekine, Shigeki / Ogawa, Reiko / Mcmanus, Michael T / Kanai, Yae / Hebrok, Matthias

    Journal of pathology. 2009 Nov., v. 219, no. 3

    2009  

    Abstract: A number of genes and their protein products are expressed within the liver lobules in a region-specific manner and confer heterogeneous metabolic properties to hepatocytes; this phenomenon is known as 'metabolic zonation'. To elucidate the roles of ... ...

    Abstract A number of genes and their protein products are expressed within the liver lobules in a region-specific manner and confer heterogeneous metabolic properties to hepatocytes; this phenomenon is known as 'metabolic zonation'. To elucidate the roles of Dicer, an endoribonuclease III type enzyme required for microRNA biogenesis, in the establishment of liver zonation, we examined the distribution of proteins exhibiting pericentral or periportal localization in hepatocyte-specific Dicer1 knockout mouse livers. Immunohistochemistry showed that the localization of pericentral proteins was mostly preserved in Dicer1-deficient livers. However, glutamine synthetase, whose expression is normally confined to a few layers of hepatocytes surrounding the central veins, was expressed in broader pericentral areas. Even more striking was the observation that all the periportal proteins that were examined, including phosphoenolpyruvate carboxykinase, E-cadherin, arginase 1, and carbamoyl phosphate synthetase-I, lost their localized expression patterns and were diffusely expressed throughout the entire lobule. Thus, with regard to periportal protein expression, the consequences of Dicer loss were similar to those caused by the disruption of β-catenin. An analysis of livers deficient in β-catenin did not identify the down-regulation of Dicer1 or any microRNAs, indicating that they are not directly activated by β-catenin. Thus, the present study illustrates that Dicer plays a pivotal role in the establishment of liver zonation. Dicer is essential for the suppression of periportal proteins by Wnt/β-catenin/TCF signalling, albeit it likely acts in an indirect manner. Copyright © 2009 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
    Language English
    Dates of publication 2009-11
    Size p. 365-372.
    Publishing place John Wiley & Sons, Ltd.
    Document type Article
    ZDB-ID 3119-7
    ISSN 1096-9896 ; 0022-3417
    ISSN (online) 1096-9896
    ISSN 0022-3417
    DOI 10.1002/path.2606
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 66/40: Show issues

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  3. Article ; Online: Dicer is required for proper liver zonation.

    Sekine, Shigeki / Ogawa, Reiko / Mcmanus, Michael T / Kanai, Yae / Hebrok, Matthias

    The Journal of pathology

    2009  Volume 219, Issue 3, Page(s) 365–372

    Abstract: A number of genes and their protein products are expressed within the liver lobules in a region-specific manner and confer heterogeneous metabolic properties to hepatocytes; this phenomenon is known as 'metabolic zonation'. To elucidate the roles of ... ...

    Abstract A number of genes and their protein products are expressed within the liver lobules in a region-specific manner and confer heterogeneous metabolic properties to hepatocytes; this phenomenon is known as 'metabolic zonation'. To elucidate the roles of Dicer, an endoribonuclease III type enzyme required for microRNA biogenesis, in the establishment of liver zonation, we examined the distribution of proteins exhibiting pericentral or periportal localization in hepatocyte-specific Dicer1 knockout mouse livers. Immunohistochemistry showed that the localization of pericentral proteins was mostly preserved in Dicer1-deficient livers. However, glutamine synthetase, whose expression is normally confined to a few layers of hepatocytes surrounding the central veins, was expressed in broader pericentral areas. Even more striking was the observation that all the periportal proteins that were examined, including phosphoenolpyruvate carboxykinase, E-cadherin, arginase 1, and carbamoyl phosphate synthetase-I, lost their localized expression patterns and were diffusely expressed throughout the entire lobule. Thus, with regard to periportal protein expression, the consequences of Dicer loss were similar to those caused by the disruption of beta-catenin. An analysis of livers deficient in beta-catenin did not identify the down-regulation of Dicer1 or any microRNAs, indicating that they are not directly activated by beta-catenin. Thus, the present study illustrates that Dicer plays a pivotal role in the establishment of liver zonation. Dicer is essential for the suppression of periportal proteins by Wnt/beta-catenin/TCF signalling, albeit it likely acts in an indirect manner.
    MeSH term(s) Animals ; Cytochrome P-450 CYP2E1/metabolism ; DEAD-box RNA Helicases/deficiency ; DEAD-box RNA Helicases/physiology ; Endoribonucleases/deficiency ; Endoribonucleases/physiology ; Excitatory Amino Acid Transporter 2/metabolism ; Female ; Hepatocytes/metabolism ; Immunoenzyme Techniques ; Liver/cytology ; Liver/metabolism ; Mice ; Mice, Knockout ; MicroRNAs/genetics ; Ornithine-Oxo-Acid Transaminase/metabolism ; Proteins/metabolism ; Ribonuclease III ; beta Catenin/metabolism ; beta Catenin/physiology
    Chemical Substances CTNNB1 protein, mouse ; Excitatory Amino Acid Transporter 2 ; MicroRNAs ; Proteins ; beta Catenin ; Cytochrome P-450 CYP2E1 (EC 1.14.13.-) ; Ornithine-Oxo-Acid Transaminase (EC 2.6.1.13) ; Endoribonucleases (EC 3.1.-) ; Dicer1 protein, mouse (EC 3.1.26.3) ; Ribonuclease III (EC 3.1.26.3) ; DEAD-box RNA Helicases (EC 3.6.4.13)
    Language English
    Publishing date 2009-08-30
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 3119-7
    ISSN 1096-9896 ; 0022-3417
    ISSN (online) 1096-9896
    ISSN 0022-3417
    DOI 10.1002/path.2606
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Ud II Zs.12: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  4. Article: Epichloë fungal endophytes and the formation of synthetic symbioses in Hordeeae (=Triticeae) grasses

    SIMPSON, Wayne R. / FAVILLE, Marty J. / MORAGA, Roger A. / WILLIAMS, Warren M. / MCMANUS, Michael T. / JOHNSON, Richard D.

    Journal of systematics and evolution

    Volume v. 52,, Issue no. 6

    Abstract: This review examines two classes of organism that live in symbiosis; grasses, and fungi. Specifically it deals with grasses of the tribe Hordeeae (formerly Triticeae) of the subfamily Poöideae and the Epichloë fungi of family Clavicipitaceae. Epichloë ... ...

    Abstract This review examines two classes of organism that live in symbiosis; grasses, and fungi. Specifically it deals with grasses of the tribe Hordeeae (formerly Triticeae) of the subfamily Poöideae and the Epichloë fungi of family Clavicipitaceae. Epichloë endophytes, particularly asexual forms, have important roles in pastoral agricultural systems in the Americas, Australia, and New Zealand. Selected strains add value to some grass‐based forage systems by providing both biotic and abiotic stress resistance. The importance of cereal grasses such as wheat, barley, rye, and oats to human and animal nutrition and indeed to the foundation and maintenance of human civilization is well documented. Both organism classes, Epichloë endophytes and cereal grasses, are of great importance in their own contexts. Here, we seek to review these two classes of organism and examine the possibility of bringing them together in symbiosis with the ultimate goal of improving cereal production systems.
    Keywords wheat ; animal nutrition ; endophytes ; production technology ; humans ; Clavicipitaceae ; grasses ; symbiosis ; barley ; fungi ; forage ; stress tolerance ; oats ; rye ; abiotic stress
    Language English
    Document type Article
    ISSN 1674-4918
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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    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.

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