@article{Fink1988Chiti-7990,
  year={1988},
  doi={10.1104/pp.88.2.270},
  title={Chitinases and beta-1,3-Glucanases in the Apoplastic Compartment of Oat Leaves (Avena sativa L.)},
  number={2},
  volume={88},
  issn={0032-0889},
  journal={Plant Physiology},
  pages={270--275},
  author={Fink, Werner and Liefland, Mathias and Mendgen, Kurt}
}

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    <dcterms:title>Chitinases and beta-1,3-Glucanases in the Apoplastic Compartment of Oat Leaves (Avena sativa L.)</dcterms:title>
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    <dcterms:issued>1988</dcterms:issued>
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    <dc:contributor>Fink, Werner</dc:contributor>
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    <dc:contributor>Mendgen, Kurt</dc:contributor>
    <dcterms:abstract xml:lang="eng">To isolate chitinases and beta-1,3-glucanases from the intercellular space of oats (Avena sativa L.), primary leaves were infiltrated with buffer and subjected to gentle centrifugation to obtain intercellular washing fluid (IWF). Approximately 5% of the chitinase and 10% of the beta-1,3-glucanase activity of the whole leaf were released. Only small amounts (0.01-0.03%) of the intracellular marker malate-dehydrogenase were released into the IWF during infiltration. Activities of chitinase and beta-1,3-glucanase in the IWF and in the leaf extract were compared by different chromatographic methods. On Sephadex G-75, chitinase appeared as a single peak (M, 29.8 kD) both in IWF and homogenate. Beta-1,3-Glucanase, however, showed two peaks in the IWF (M, 52 and 31.3 kD), whereas the elution pattern of the homogenate showed only one major peak at 22 kD. Chromatofocusing indicated that the IWF contained four chitinases and five beta-1,3-glucanases. The elution pattern of the homogenate and IWF were similar with regard to the elution pH, but the peak intensities were distinctly different. Our results demonstrate that extracellular beta-1,3-glucanases are different from those located intracellularly. Extracellular and intracellular chitinases do not differ in molecular properties, except for one isozyme which seems to be confined to the extracellular space. We suggest that both enzymes might play a special role in pathogenesis during fungal infection.</dcterms:abstract>
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    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:39:05Z</dc:date>
    <dc:creator>Liefland, Mathias</dc:creator>
    <dc:creator>Fink, Werner</dc:creator>
    <dc:language>eng</dc:language>
    <dc:creator>Mendgen, Kurt</dc:creator>
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    <dc:contributor>Liefland, Mathias</dc:contributor>
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    <dcterms:bibliographicCitation>First publ. in: Plant Physiology 88 (1988), pp. 270-275</dcterms:bibliographicCitation>
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