Victorin-induced extracellular. beta. -glucan in oat protoplasts
Conference
·
· Plant Physiology, Supplement; (USA)
OSTI ID:5839578
- MSU-DOE Plant Research Laboratory, East Lansing, MI (USA) Michigan State Univ., East Lansing (USA)
The host specific phytotoxin victorin, produced by Cochliobolus (Helminthosporium) victoriae, induces mesophyll protoplasts of victorin-sensitive oat (Avena sativa) cultivars to produce an extracellular polysaccharide (EPS). This EPS is maximally induced by 60 pg victorin/ml, fluoresces in the presence of Calcofluor and Sirofluor, is degraded by purified {beta} (1{yields}3) glucanase, and is composed solely of glucose. Induction of EPS is not a general response to toxic compounds. However, AlCl{sub 3} induces EPS maximally at 200 {mu}M at pH 6.0 as measured by incorporation of ({sup 14}C)glucose into ethanol-insoluble product. EPS induced by AlCl{sub 3} has been further analyzed and determined to be (1{yields}3) linked glucan. This response to AlCl{sub 3} is not host-selective oat varieties that are tolerant of victorin as well as wheat (Triticum aestivum) and barley (Hordeum vulgare) also produce EPS in response to AlCl{sub 3}. However, the production of EPS by mesophyll protoplasts is not related to aluminum tolerance at the level of whole plants.
- OSTI ID:
- 5839578
- Report Number(s):
- CONF-9007196--
- Conference Information:
- Journal Name: Plant Physiology, Supplement; (USA) Journal Volume: 93:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550901 -- Pathology-- Tracer Techniques
560300* -- Chemicals Metabolism & Toxicology
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALUMINIUM CHLORIDES
ALUMINIUM COMPOUNDS
ANTIGENS
BARLEY
CARBOHYDRATES
CARBON 14 COMPOUNDS
CEREALS
CHLORIDES
CHLORINE COMPOUNDS
GRAMINEAE
HALIDES
HALOGEN COMPOUNDS
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LILIOPSIDA
MAGNOLIOPHYTA
MATERIALS
ORGANIC COMPOUNDS
PLANTS
POLYSACCHARIDES
SACCHARIDES
TOXIC MATERIALS
TOXICITY
TOXINS
TRACER TECHNIQUES
WHEAT
560300* -- Chemicals Metabolism & Toxicology
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALUMINIUM CHLORIDES
ALUMINIUM COMPOUNDS
ANTIGENS
BARLEY
CARBOHYDRATES
CARBON 14 COMPOUNDS
CEREALS
CHLORIDES
CHLORINE COMPOUNDS
GRAMINEAE
HALIDES
HALOGEN COMPOUNDS
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LILIOPSIDA
MAGNOLIOPHYTA
MATERIALS
ORGANIC COMPOUNDS
PLANTS
POLYSACCHARIDES
SACCHARIDES
TOXIC MATERIALS
TOXICITY
TOXINS
TRACER TECHNIQUES
WHEAT