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  1. Article ; Online: Uncovering the dominant role of root metabolism in shaping rhizosphere metabolome under drought in tropical rainforest plants.

    Hildebrand, Gina A / Honeker, Linnea K / Freire-Zapata, Viviana / Ayala-Ortiz, Christian / Rajakaruna, Sumudu / Fudyma, Jane / Daber, L Erik / AminiTabrizi, Roya / Chu, Rosalie L / Toyoda, Jason / Flowers, Sarah E / Hoyt, David W / Hamdan, Rasha / Gil-Loaiza, Juliana / Shi, Lingling / Dippold, Michaela A / Ladd, S Nemiah / Werner, Christiane / Meredith, Laura K /
    Tfaily, Malak M

    The Science of the total environment

    2023  Volume 899, Page(s) 165689

    Abstract: Plant-soil-microbe interactions are crucial for driving rhizosphere processes that contribute to metabolite turnover and nutrient cycling. With the increasing frequency and severity of water scarcity due to climate warming, understanding how plant- ... ...

    Abstract Plant-soil-microbe interactions are crucial for driving rhizosphere processes that contribute to metabolite turnover and nutrient cycling. With the increasing frequency and severity of water scarcity due to climate warming, understanding how plant-mediated processes, such as root exudation, influence soil organic matter turnover in the rhizosphere is essential. In this study, we used 16S rRNA gene amplicon sequencing, rhizosphere metabolomics, and position-specific
    MeSH term(s) Soil Microbiology ; Rainforest ; Droughts ; Rhizosphere ; RNA, Ribosomal, 16S/genetics ; Carbon/metabolism ; Soil ; Bacteria/metabolism ; Metabolome ; Plant Roots/metabolism
    Chemical Substances RNA, Ribosomal, 16S ; Carbon (7440-44-0) ; Soil
    Language English
    Publishing date 2023-07-20
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.165689
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  2. Article: Elucidating Drought-Tolerance Mechanisms in Plant Roots through ¹H NMR Metabolomics in Parallel with MALDI-MS, and NanoSIMS Imaging Techniques

    Honeker, Linnea K. / Hildebrand, Gina A. / Fudyma, Jane D. / Daber, L. Erik / Hoyt, David / Flowers, Sarah E. / Gil-Loaiza, Juliana / Kübert, Angelika / Bamberger, Ines / Anderton, Christopher R. / Cliff, John / Leichty, Sarah / AminiTabrizi, Roya / Kreuzwieser, Jürgen / Shi, Lingling / Bai, Xuejuan / Velickovic, Dusan / Dippold, Michaela A. / Ladd, S. Nemiah /
    Werner, Christiane / Meredith, Laura K. / Tfaily, Malak M.

    Environmental science & technology. 2022 Jan. 20, v. 56, no. 3

    2022  

    Abstract: As direct mediators between plants and soil, roots play an important role in metabolic responses to environmental stresses such as drought, yet these responses are vastly uncharacterized on a plant-specific level, especially for co-occurring species. ... ...

    Abstract As direct mediators between plants and soil, roots play an important role in metabolic responses to environmental stresses such as drought, yet these responses are vastly uncharacterized on a plant-specific level, especially for co-occurring species. Here, we aim to examine the effects of drought on root metabolic profiles and carbon allocation pathways of three tropical rainforest species by combining cutting-edge metabolomic and imaging technologies in an in situ position-specific ¹³C-pyruvate root-labeling experiment. Further, washed (rhizosphere-depleted) and unwashed roots were examined to test the impact of microbial presence on root metabolic pathways. Drought had a species-specific impact on the metabolic profiles and spatial distribution in Piper sp. and Hibiscus rosa sinensis roots, signifying different defense mechanisms; Piper sp. enhanced root structural defense via recalcitrant compounds including lignin, while H. rosa sinensis enhanced biochemical defense via secretion of antioxidants and fatty acids. In contrast, Clitoria fairchildiana, a legume tree, was not influenced as much by drought but rather by rhizosphere presence where carbohydrate storage was enhanced, indicating a close association with symbiotic microbes. This study demonstrates how multiple techniques can be combined to identify how plants cope with drought through different drought-tolerance strategies and the consequences of such changes on below-ground organic matter composition.
    Keywords Clitoria fairchildiana ; Hibiscus rosa-sinensis ; Piper ; carbohydrates ; carbon ; drought ; drought tolerance ; environmental science ; legumes ; lignin ; metabolomics ; organic matter ; rhizosphere ; secretion ; soil ; trees ; tropical rain forests
    Language English
    Dates of publication 2022-0120
    Size p. 2021-2032.
    Publishing place American Chemical Society
    Document type Article
    ISSN 1520-5851
    DOI 10.1021/acs.est.1c06772
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  3. Article ; Online: Single-Crystal and Electronic Structure of a 1.3 nm Indium Phosphide Nanocluster.

    Gary, Dylan C / Flowers, Sarah E / Kaminsky, Werner / Petrone, Alessio / Li, Xiaosong / Cossairt, Brandi M

    Journal of the American Chemical Society

    2016  Volume 138, Issue 5, Page(s) 1510–1513

    Abstract: Magic-sized nanoclusters have been implicated as mechanistically relevant intermediates in the synthesis of group III-V quantum dots. Herein we report the single-crystal X-ray diffraction structure of a carboxylate-ligated indium phosphide magic-sized ... ...

    Abstract Magic-sized nanoclusters have been implicated as mechanistically relevant intermediates in the synthesis of group III-V quantum dots. Herein we report the single-crystal X-ray diffraction structure of a carboxylate-ligated indium phosphide magic-sized nanocluster at 0.83 Å resolution. The structure of this cluster, In37P20(O2CR)51, deviates from that of known crystal phases and possesses a non-stoichiometric, charged core composed of a series of fused 6-membered rings. The cluster is completely passivated by bidentate carboxylate ligands exhibiting predominantly bridging binding modes. The absorption spectrum of the cluster shows an asymmetric line shape that is broader than what would be expected from a homogeneous sample. A combination of computational and experimental evidence suggests that the spectral line width is a result of multiple, discrete electronic transitions that couple to vibrations of the nanocrystal lattice. The product of reaction of this nanocluster with 1 equiv of water has also been structurally characterized, demonstrating site selectivity without a drastic alteration of electronic structure.
    Language English
    Publishing date 2016-02-10
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.5b13214
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  4. Article: Single-Crystal and Electronic Structure of a 1.3 nm Indium Phosphide Nanocluster

    Gary, Dylan C / Cossairt Brandi M / Flowers Sarah E / Kaminsky Werner / Li Xiaosong / Petrone Alessio

    Journal of the American Chemical Society. 2016 Feb. 10, v. 138, no. 5

    2016  

    Abstract: Magic-sized nanoclusters have been implicated as mechanistically relevant intermediates in the synthesis of group III-V quantum dots. Herein we report the single-crystal X-ray diffraction structure of a carboxylate-ligated indium phosphide magic-sized ... ...

    Abstract Magic-sized nanoclusters have been implicated as mechanistically relevant intermediates in the synthesis of group III-V quantum dots. Herein we report the single-crystal X-ray diffraction structure of a carboxylate-ligated indium phosphide magic-sized nanocluster at 0.83 Å resolution. The structure of this cluster, In₃₇P₂₀(O₂CR)₅₁, deviates from that of known crystal phases and possesses a non-stoichiometric, charged core composed of a series of fused 6-membered rings. The cluster is completely passivated by bidentate carboxylate ligands exhibiting predominantly bridging binding modes. The absorption spectrum of the cluster shows an asymmetric line shape that is broader than what would be expected from a homogeneous sample. A combination of computational and experimental evidence suggests that the spectral line width is a result of multiple, discrete electronic transitions that couple to vibrations of the nanocrystal lattice. The product of reaction of this nanocluster with 1 equiv of water has also been structurally characterized, demonstrating site selectivity without a drastic alteration of electronic structure.
    Keywords absorption ; indium ; ligands ; nanocrystals ; nanoparticles ; quantum dots ; X-ray diffraction
    Language English
    Dates of publication 2016-0210
    Size p. 1510-1513.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021%2Fjacs.5b13214
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

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  5. Article ; Online: Elucidating Drought-Tolerance Mechanisms in Plant Roots through

    Honeker, Linnea K / Hildebrand, Gina A / Fudyma, Jane D / Daber, L Erik / Hoyt, David / Flowers, Sarah E / Gil-Loaiza, Juliana / Kübert, Angelika / Bamberger, Ines / Anderton, Christopher R / Cliff, John / Leichty, Sarah / AminiTabrizi, Roya / Kreuzwieser, Jürgen / Shi, Lingling / Bai, Xuejuan / Velickovic, Dusan / Dippold, Michaela A / Ladd, S Nemiah /
    Werner, Christiane / Meredith, Laura K / Tfaily, Malak M

    Environmental science & technology

    2022  Volume 56, Issue 3, Page(s) 2021–2032

    Abstract: As direct mediators between plants and soil, roots play an important role in metabolic responses to environmental stresses such as drought, yet these responses are vastly uncharacterized on a plant-specific level, especially for co-occurring species. ... ...

    Abstract As direct mediators between plants and soil, roots play an important role in metabolic responses to environmental stresses such as drought, yet these responses are vastly uncharacterized on a plant-specific level, especially for co-occurring species. Here, we aim to examine the effects of drought on root metabolic profiles and carbon allocation pathways of three tropical rainforest species by combining cutting-edge metabolomic and imaging technologies in an in situ position-specific
    MeSH term(s) Droughts ; Metabolomics ; Plant Roots/metabolism ; Plants ; Proton Magnetic Resonance Spectroscopy ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization ; Stress, Physiological
    Language English
    Publishing date 2022-01-20
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ISSN 1520-5851
    ISSN (online) 1520-5851
    DOI 10.1021/acs.est.1c06772
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Hydrogenolysis of Dinuclear PCN

    Bailey, Wilson D / Phearman, Alexander S / Luconi, Lapo / Rossin, Andrea / Yakhvarov, Dmitry G / D'Accolti, Lucia / Flowers, Sarah E / Kaminsky, Werner / Kemp, Richard A / Giambastiani, Giuliano / Goldberg, Karen I

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2019  Volume 25, Issue 42, Page(s) 9920–9929

    Abstract: The hydrogenolysis of mono- and dinuclear ... ...

    Abstract The hydrogenolysis of mono- and dinuclear Pd
    Language English
    Publishing date 2019-07-03
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-X
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.201900507
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