Effects of resource manipulation on the correlation between total phenolics and astringency in Douglas-fir
The correlation between total phenolics and tannin content within a species is often considered to be suitably strong to allow researchers to assume, with some degree of confidence, that levels of one will approximately parallel the other. However, the manipulation of resource availability could lea...
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| Veröffentlicht in: | Journal of chemical ecology 1993-07, Vol.19 (7), p.1429-1437 |
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| container_end_page | 1437 |
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| container_title | Journal of chemical ecology |
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| creator | Horner, J.D Cates, R.G Gosz, J.R |
| description | The correlation between total phenolics and tannin content within a species is often considered to be suitably strong to allow researchers to assume, with some degree of confidence, that levels of one will approximately parallel the other. However, the manipulation of resource availability could lead to disproportionate changes in total phenolics and tannins and/or in the specific monomers of which these fractions are composed, thus altering the correlation between these components. In order to test this hypothesis, we examined the correlation between foliar levels of total phenolics (as measured by the ferric chloride assay) and tannins (as measured by an astringency assay) in Douglas-fir (Pseudotsuga menziesii Mirb. Franco) before and after the manipulation of nitrogen and water availability. Prior to manipulation of resources, the correlation between total phenolics and tannins was strong and highly significant (r2 = 0.869; P 0.001). This correlation was considerably weaker and not statistically significant following resource manipulation (r2 |
| doi_str_mv | 10.1007/BF00984887 |
| format | Article |
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However, the manipulation of resource availability could lead to disproportionate changes in total phenolics and tannins and/or in the specific monomers of which these fractions are composed, thus altering the correlation between these components. In order to test this hypothesis, we examined the correlation between foliar levels of total phenolics (as measured by the ferric chloride assay) and tannins (as measured by an astringency assay) in Douglas-fir (Pseudotsuga menziesii Mirb. Franco) before and after the manipulation of nitrogen and water availability. Prior to manipulation of resources, the correlation between total phenolics and tannins was strong and highly significant (r2 = 0.869; P 0.001). 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However, the manipulation of resource availability could lead to disproportionate changes in total phenolics and tannins and/or in the specific monomers of which these fractions are composed, thus altering the correlation between these components. In order to test this hypothesis, we examined the correlation between foliar levels of total phenolics (as measured by the ferric chloride assay) and tannins (as measured by an astringency assay) in Douglas-fir (Pseudotsuga menziesii Mirb. Franco) before and after the manipulation of nitrogen and water availability. Prior to manipulation of resources, the correlation between total phenolics and tannins was strong and highly significant (r2 = 0.869; P 0.001). This correlation was considerably weaker and not statistically significant following resource manipulation (r2</description><subject>Agronomy. Soil science and plant productions</subject><subject>AGUA</subject><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Autoecology</subject><subject>AZOTE</subject><subject>Biological and medical sciences</subject><subject>COMPOSE PHENOLIQUE</subject><subject>COMPOSICION QUIMICA</subject><subject>COMPOSITION CHIMIQUE</subject><subject>COMPUESTOS FENOLICOS</subject><subject>DISPONIBILIDAD DE NUTRIENTES</subject><subject>DISPONIBILITE D'ELEMENT NUTRITIF</subject><subject>EAU</subject><subject>FEUILLE</subject><subject>Fundamental and applied biological sciences. 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Soil science and plant productions</topic><topic>AGUA</topic><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Autoecology</topic><topic>AZOTE</topic><topic>Biological and medical sciences</topic><topic>COMPOSE PHENOLIQUE</topic><topic>COMPOSICION QUIMICA</topic><topic>COMPOSITION CHIMIQUE</topic><topic>COMPUESTOS FENOLICOS</topic><topic>DISPONIBILIDAD DE NUTRIENTES</topic><topic>DISPONIBILITE D'ELEMENT NUTRITIF</topic><topic>EAU</topic><topic>FEUILLE</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>HOJAS</topic><topic>NITROGENO</topic><topic>Plants and fungi</topic><topic>PSEUDOTSUGA MENZIESII</topic><topic>TANINOS</topic><topic>TANNIN</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Horner, J.D</creatorcontrib><creatorcontrib>Cates, R.G</creatorcontrib><creatorcontrib>Gosz, J.R</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Journal of chemical ecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Horner, J.D</au><au>Cates, R.G</au><au>Gosz, J.R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of resource manipulation on the correlation between total phenolics and astringency in Douglas-fir</atitle><jtitle>Journal of chemical ecology</jtitle><addtitle>J Chem Ecol</addtitle><date>1993-07-01</date><risdate>1993</risdate><volume>19</volume><issue>7</issue><spage>1429</spage><epage>1437</epage><pages>1429-1437</pages><issn>0098-0331</issn><eissn>1573-1561</eissn><coden>JCECD8</coden><abstract>The correlation between total phenolics and tannin content within a species is often considered to be suitably strong to allow researchers to assume, with some degree of confidence, that levels of one will approximately parallel the other. However, the manipulation of resource availability could lead to disproportionate changes in total phenolics and tannins and/or in the specific monomers of which these fractions are composed, thus altering the correlation between these components. In order to test this hypothesis, we examined the correlation between foliar levels of total phenolics (as measured by the ferric chloride assay) and tannins (as measured by an astringency assay) in Douglas-fir (Pseudotsuga menziesii Mirb. Franco) before and after the manipulation of nitrogen and water availability. Prior to manipulation of resources, the correlation between total phenolics and tannins was strong and highly significant (r2 = 0.869; P 0.001). This correlation was considerably weaker and not statistically significant following resource manipulation (r2</abstract><cop>New York, NY</cop><pub>Springer</pub><pmid>24249173</pmid><doi>10.1007/BF00984887</doi><tpages>9</tpages></addata></record> |
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| ispartof | Journal of chemical ecology, 1993-07, Vol.19 (7), p.1429-1437 |
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| subjects | Agronomy. Soil science and plant productions AGUA Animal and plant ecology Animal, plant and microbial ecology Autoecology AZOTE Biological and medical sciences COMPOSE PHENOLIQUE COMPOSICION QUIMICA COMPOSITION CHIMIQUE COMPUESTOS FENOLICOS DISPONIBILIDAD DE NUTRIENTES DISPONIBILITE D'ELEMENT NUTRITIF EAU FEUILLE Fundamental and applied biological sciences. Psychology HOJAS NITROGENO Plants and fungi PSEUDOTSUGA MENZIESII TANINOS TANNIN |
| title | Effects of resource manipulation on the correlation between total phenolics and astringency in Douglas-fir |
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