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  • 1
    Online Resource
    Online Resource
    Brassinosteroids affect the symbiosis between the AM fungus Rhizoglomus irregularis and solanaceous host plants (2019)
    Berlin : Humboldt-Universität zu Berlin
    Details
    UID:
    b3kat_BV045678572
    Format: 1 Online-Ressource
    Language: English
    URN: urn:nbn:de:kobv:11-110-18452/20938-9
    URL: Volltext  (kostenfrei)
    Author information: Bitterlich, Michael 1981-
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    Fulltext
    HU Berlin
  • 2
    Book
    Book
    The photosynthetic response of greenhouse tomato cultures under a changing environment and the implications of using arbuscular Mycorrhiza (2016)
    Berlin
    Details
    UID:
    b3kat_BV044424236
    Format: XV, 179 Seiten , Illustrationen, Diagramme
    Note: Dissertation Humboldt-Universität zu Berlin 2016
    Additional Edition: Reproduziert als Bitterlich, Michael The photosynthetic response of greenhouse tomato cultures under a changing environment and the implications of using arbuscular Mycorrhiza Berlin : MIK-Center GmbH, 2016
    Language: English
    Subjects: Agriculture, Forestry, Horticulture, Fishery, Domestic Science , Biology
    RVK:
    WN 3100
    RVK:
    ZC 61250
    RVK:
    ZC 14110
    Keywords: Hochschulschrift
    Author information: Bitterlich, Michael 1981-
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  • 3
    Microfilm
    Microfilm
    The photosynthetic response of greenhouse tomato cultures under a changing environment and the implications of using arbuscular Mycorrhiza (2016)
    Berlin | Berlin : MIK-Center GmbH
    Details
    UID:
    b3kat_BV044489380
    Format: 2 Mikrofiches (XV, 179 Seiten) , Illustrationen, Diagramme
    Note: Dissertation Humboldt-Universität zu Berlin 2016
    Additional Edition: Reproduktion von Bitterlich, Michael The photosynthetic response of greenhouse tomato cultures under a changing environment and the implications of using arbuscular Mycorrhiza Berlin, 2016
    Language: English
    Subjects: Agriculture, Forestry, Horticulture, Fishery, Domestic Science , Biology
    RVK:
    WN 3100
    RVK:
    ZC 61250
    RVK:
    ZC 14110
    Keywords: Hochschulschrift
    Author information: Bitterlich, Michael 1981-
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    Microfilm
    HU Berlin get availability status
  • 4
    Online Resource
    Online Resource
    Brassinosteroids and sucrose transport in mycorrhizal tomato plants (2020)
    Berlin : Humboldt-Universität zu Berlin
    Details
    UID:
    edochu_18452_22240
    Format: 1 Online-Ressource (6 Seiten)
    Content: Silencing of SlSUT2 expression in tomato plants leads to a dwarfed phenotype, reduced pollen vitality and reduces pollen germination rate. Male sterility of flowers, together with a dwarfed growth behavior is reminiscent to brassinosteroid defective mutant plants. Therefore we aimed to rescue the SlSUT2 silencing phenotype by local brassinosteroid application. The phenotypical effects of SlSUT2 down-regulation could partially be rescued by epi-brassinolide treatment suggesting that SlSUT2 interconnects sucrose partitioning with brassinosteroid signaling. We previously showed that SlSUT2 silenced plants show increased mycorrhization and, this effect was explained by a putative sucrose retrieval function of SlSUT2 at the periarbuscular membrane. More recently, we reported that the symbiotic interaction between Solanaceous hosts and AM fungi is directly affected by watering the roots with epi-brassinolide. Here we show that the SlSUT2 effects on mycorrhiza are not only based on the putative sucrose retrieval function of SlSUT2 at the periarbuscular membrane. Our analyses argue that brassinosteroids as well as SlSUT2 per se can impact the arbuscular morphology/architecture and thereby affect the efficiency of nutrient exchange between both symbionts and the mycorrhizal growth benefit for the plant.
    Content: Peer Reviewed
    Note: This article was supported by the Open Access Publication Fund of Humboldt-Universität zu Berlin.
    In: Austin, Tex. : Landes Bioscience, 15,2
    Language: English
    DOI: 10.18452/21515
    DOI: 10.1080/15592324.2020.1714292
    URN: urn:nbn:de:kobv:11-110-18452/22240-5
    URL: Volltext  (kostenfrei)
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    Fulltext
    HU Berlin
  • 5
    Online Resource
    Online Resource
    Arbuscular Mycorrhiza Improves Substrate Hydraulic Conductivity in the Plant Available Moisture Range Under Root Growth Exclusion (2018)
    Berlin : Humboldt-Universität zu Berlin
    Details
    UID:
    edochu_18452_21881
    Format: 1 Online-Ressource (11 Seiten)
    Content: Arbuscular mycorrhizal fungi (AMF) proliferate in soils and are known to affect soil structure. Although their contribution to structure is extensively investigated, the consequences of those processes for soil water extractability and transport has, so far, gained surprisingly little attention. Therefore we asked, whether AMF can affect water retention and unsaturated hydraulic conductivity under exclusion of root ingrowth, in order to minimize plant driven effects. We carried out experiments with tomato inoculated with Rhizoglomus irregulare in a soil substrate with sand and vermiculite that created variation in colonization by mixed pots with wild type (WT) plants and mycorrhiza resistant (RMC) mutants. Sampling cores were introduced and used to assess substrate moisture retention dynamics and modeling of substrate water retention and hydraulic conductivity. AMF reduced the saturated water content and total porosity, but maintained air filled porosity in soil spheres that excluded root ingrowth. The water content between field capacity and the permanent wilting point (6–1500 kPa) was only reduced in mycorrhizal substrates that contained at least one RMC mutant. Plant available water contents correlated positively with soil protein contents. Soil protein contents were highest in pots that possessed the strongest hyphal colonization, but not significantly affected. Substrate conductivity increased up to 50% in colonized substrates in the physiologically important water potential range between 6 and 10 kPa. The improvements in hydraulic conductivity are restricted to substrates where at least one WT plant was available for the fungus, indicating a necessity of a functional symbiosis for this effect. We conclude that functional mycorrhiza alleviates the resistance to water movement through the substrate in substrate areas outside of the root zone.
    Content: Peer Reviewed
    In: Lausanne : Frontiers Media S.A., 9
    Language: English
    DOI: 10.3389/fpls.2018.00301
    DOI: 10.18452/21133
    URN: urn:nbn:de:kobv:11-110-18452/21881-2
    URL: Volltext  (kostenfrei)
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    HU Berlin
  • 6
    Online Resource
    Online Resource
    Arbuscular Mycorrhizas: A Promising Component of Plant Production Systems Provided Favorable Conditions for Their Growth (2018)
    Berlin : Humboldt-Universität zu Berlin
    Details
    UID:
    edochu_18452_21882
    Format: 1 Online-Ressource (6 Seiten)
    Content: Arbuscular mycorrhizal (AM) fungi have become an attractive target as biostimulants in agriculture due to their known contributions to plant nutrient uptake and abiotic stress tolerance. However, inoculation with AM fungi can result in depressed, unchanged, or stimulated plant growth, which limits security of application in crop production systems. Crop production comprises high diversity and variability in atmospheric conditions, substrates, plant species, and more. In this review, we emphasize that we need integrative approaches for studying mycorrhizal symbioses in order to increase the predictability of growth outcomes and security of implementation of AM fungi into crop production. We briefly review known mechanisms of AM on nutrient uptake and drought tolerance of plants, on soil structure and soil hydraulic properties. We carve out that an important factor for both nutrient availability and drought tolerance is yet not well understood; the AM effects on soil hydraulic properties. We gave special emphasis to circular references between atmospheric conditions, soil hydraulic properties and plant nutrient and water uptake. We stress that interdisciplinary approaches are needed that account for a variability of atmospheric conditions and, how this would match to mycorrhizal functions and demands in a way that increased plant nutrient and water uptake can be effectively used for physiological processes and ultimately growth. Only with integrated analyses under a wide range of growing conditions, we will be able to make profound decisions whether or not to use AM in particular crop production systems or can adjust culture conditions in ways that AM plants thrive.
    Content: Peer Reviewed
    In: Lausanne : Frontiers Media S.A., 9
    Language: English
    DOI: 10.3389/fpls.2018.01329
    DOI: 10.18452/21134
    URN: urn:nbn:de:kobv:11-110-18452/21882-8
    URL: Volltext  (kostenfrei)
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    HU Berlin
  • 7
    Online Resource
    Online Resource
    An arbuscular mycorrhizal fungus alters soil water retention and hydraulic conductivity in a soil texture specific way (2023)
    Berlin : Humboldt-Universität zu Berlin
    Details
    UID:
    edochu_18452_29129
    Format: 1 Online-Ressource (15 Seiten)
    Content: Arbuscular mycorrhizal fungi (AMF) alter plant water relations and contribute to soil structure. Although soil hydraulic properties depend on soil structure and may limit plant water uptake, little is known about how AMF influence soil water retention (the relation between the soil water content and soil water potential) and hydraulic conductivity in different soils. Instead, these soil hydraulic properties often are considered to be independent of AMF presence in experiments. We asked if this assumption holds true for both sand and loam. We grew maize plants either inoculated with Rhizophagus irregularis or with autoclaved inoculum in pots filled with quartz sand or loam soil until extraradical spread of the fungus throughout the pots was achieved. Each pot contained a hyphal compartment made of a soil sampling core (250 cm3) covered with a 20-µm nylon mesh to encourage fungus ingrowth but to exclude root ingrowth. We measured soil water retention and unsaturated hydraulic conductivity in these undisturbed root-free soil volumes. We observed that in loam harboring the mycorrhizal fungus, the soil water retention decreased, while in sand, it increased without detectable changes in the soil bulk density. The effects of the fungus on the soil water potential were strongest at low soil water contents in both soils. As a consequence of the altered water potentials in soils with the mycorrhizal fungus, soil hydraulic conductivity increased in loam but decreased in sand after fungus ingrowth. We conclude that in our study, the mycorrhizal fungus acted as a soil conditioner even distant from roots, which encouraged drainage in loams prone to sogginess but enhanced water storage in sands prone to quick desiccation. We recommend considering soil hydraulic properties as being dynamic in future studies on water relations of mycorrhizal plants.
    Content: Peer Reviewed
    In: Heidelberg : Springer, 33,3, Seiten 165-179
    Language: English
    DOI: 10.18452/28487
    DOI: 10.1007/s00572-023-01106-8
    URN: urn:nbn:de:kobv:11-110-18452/29129-6
    URL: Volltext  (kostenfrei)
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    HU Berlin
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