aku cellulose
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CELLULOSE BIOSYNTHESIS
IN OOMYCETES
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Oomycetes can be biotrophs,hemibiotrophs or necrotrophs.
Biotrophic species obtain their nutrients
from living tissues Hemibiotrophs rst feed on living tissues
and !ill their host at a later stage.
"ecrotrophs live e#lusively on dead hosttissues.
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The Oomycete cellulose is microbrillar,of low crystallinity .
Since little se-uence information from
Oomycetes has been available untilrecently, genes encoding the $esAcatalytic subunit in these microorganismsremain un!nown.
"o $esA terminal comple# has beenobserved in Oomycetes
$esA $ellulose synthases
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The e#act mode of assembly of thecarbohydrate components in the cellwalls of Oomycetes is not !nown, even
though it is believed that the cell wallsconsist of an inner layer of cellulose .
$ellulose in Oomycetes has most li!elythe same sca/olding function as chitin in
fungal cell walls.