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Abundance of lipids in differently sized aggregates depends on their chemical composition

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10382517" target="_blank" >RIV/00216208:11310/18:10382517 - isvavai.cz</a>

  • Nalezeny alternativní kódy

    RIV/60077344:_____/18:00493259

  • Výsledek na webu

    <a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Oldf7cIgvQ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Oldf7cIgvQ</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1007/s10533-018-0481-7" target="_blank" >10.1007/s10533-018-0481-7</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Abundance of lipids in differently sized aggregates depends on their chemical composition

  • Popis výsledku v původním jazyce

    Evidence for a vital role of soil mineral matrix interactions in lipid preservation is steadily increasing. However, it remains unclear whether solvent-extractable (&apos;free&apos;) or hydrolyzable (&apos;bound&apos;) lipids, including molecular proxies, e.g., for cutin and suberin, are similarly affected by different stabilization mechanisms in soil (i.e., aggregation or organo-mineral association). To provide insights into the effect of these stabilization mechanisms on lipid composition and preservation, we investigated free and bound lipids in particulate and mineral soil fractions, deriving from sand- and silt-/clay-sized aggregates from a forest subsoil. While free lipids accumulated in sand-sized aggregates, the more complex bound lipids accumulated in silt- and clay-sized aggregates, particularly in the respective mineral fractions &lt; 6.3 A mu m (fine silt and clay). The presence of both, cutin and suberin markers indicated input of leaf- and root-derived organic matter to the subsoil. Yet, our cutin marker (9,10,omega-trihydroxyoctadecanoic acid) was not extracted from the mineral aggregate compartments &lt; 6.3 A mu m, perhaps due to its chemical structure (i.e., cross-linking via several hydroxy groups, and thus higher &apos;stability&apos;, in macromolecular structures). Combined, these results suggest that the chemical composition of lipids (and likely also that of other soil organic matter compounds) governs interaction with their environment, such as accumulation in aggregates or association with mineral soil compartments, and thus indirectly influences their persistence in soil.

  • Název v anglickém jazyce

    Abundance of lipids in differently sized aggregates depends on their chemical composition

  • Popis výsledku anglicky

    Evidence for a vital role of soil mineral matrix interactions in lipid preservation is steadily increasing. However, it remains unclear whether solvent-extractable (&apos;free&apos;) or hydrolyzable (&apos;bound&apos;) lipids, including molecular proxies, e.g., for cutin and suberin, are similarly affected by different stabilization mechanisms in soil (i.e., aggregation or organo-mineral association). To provide insights into the effect of these stabilization mechanisms on lipid composition and preservation, we investigated free and bound lipids in particulate and mineral soil fractions, deriving from sand- and silt-/clay-sized aggregates from a forest subsoil. While free lipids accumulated in sand-sized aggregates, the more complex bound lipids accumulated in silt- and clay-sized aggregates, particularly in the respective mineral fractions &lt; 6.3 A mu m (fine silt and clay). The presence of both, cutin and suberin markers indicated input of leaf- and root-derived organic matter to the subsoil. Yet, our cutin marker (9,10,omega-trihydroxyoctadecanoic acid) was not extracted from the mineral aggregate compartments &lt; 6.3 A mu m, perhaps due to its chemical structure (i.e., cross-linking via several hydroxy groups, and thus higher &apos;stability&apos;, in macromolecular structures). Combined, these results suggest that the chemical composition of lipids (and likely also that of other soil organic matter compounds) governs interaction with their environment, such as accumulation in aggregates or association with mineral soil compartments, and thus indirectly influences their persistence in soil.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    10511 - Environmental sciences (social aspects to be 5.7)

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/GA18-24138S" target="_blank" >GA18-24138S: Tvorba půdních agregátů během sukcese a její úloha v akumulaci uhlíku a zadržování vody v půdě</a><br>

  • Návaznosti

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Ostatní

  • Rok uplatnění

    2018

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    Biogeochemistry

  • ISSN

    0168-2563

  • e-ISSN

  • Svazek periodika

    140

  • Číslo periodika v rámci svazku

    1

  • Stát vydavatele periodika

    NL - Nizozemsko

  • Počet stran výsledku

    15

  • Strana od-do

    111-125

  • Kód UT WoS článku

    000442208100008

  • EID výsledku v databázi Scopus

    2-s2.0-85051805028