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You searched for: Journal name Plant physiology Remove constraint Journal name: Plant physiology Subject chitosan Remove constraint Subject: chitosan
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1. Benzoxazinoid Metabolites Regulate Innate Immunity against Aphids and Fungi in Maize

Author:
Shakoor Ahmad; Nathalie Veyrat; Ruth Gordon-Weeks; Yuhua Zhang; Janet Martin; Lesley Smart; Gaétan Glauser; Matthias Erb; Victor Flors; Monika Frey; Jurriaan Ton
Source:
Plant physiology 2011 v.157 no.1 pp. 317-327
ISSN:
0032-0889
Subject:
Rhopalosiphum padi; Setosphaeria; Zea mays; biosynthesis; callose; chitosan; corn; dimboa; fungi; genes; grasses; herbivores; immunity; leaf extracts; phosphates; resistance to penetration; secondary metabolites
Abstract:
... Benzoxazinoids (BXs), such as 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one (DIMBOA), are secondary metabolites in grasses. The first step in BX biosynthesis converts indole-3-glycerol phosphate into indole. In maize (Zea mays), this reaction is catalyzed by either BENZOXAZINELESS1 (BX1) or INDOLE GLYCEROL PHOSPHATE LYASE (IGL). The Bx1 gene is under developmental control and is mainly respo ...
DOI:
10.1104/pp.111.180224
PubMed:
21730199
PubMed Central:
PMC3165881

2. Comparison of the ability of partially N-acetylated chitosan and chitooligosaccharides to elicit resistance reactions in wheat leaves

Author:
Vander, P.; Varum, K.M.; Domard, A.; El-Gueddari, N.E.; Moerschbacher, B.M.
Source:
Plant physiology 1998 v.118 no.4 pp. 1353-1359
ISSN:
0032-0889
Subject:
Triticum aestivum; leaves; plant pathogenic fungi; pathogenicity; disease resistance; chitosan; dose response; oligosaccharides; lignin; biosynthesis; polymerization
Abstract:
... Chitin, a linear polysaccharide composed of (1 leads to 4)-linked 2-acetamido-2-deoxy-beta-D-glucopyranose (GlcNAc) residues, and chitosan, the fully or partially N-acetylated, water-soluble derivative of chitin composed of (1 leads to 4)-linked GlcNAc and 2-amino-2-deoxy-beta-D-glucopyranose (GlcN), have been proposed as elicitors of defense reactions in higher plants. We tested and compared the ...

3. Cutin monomers and surface wax constituents elicit H2O2 in conditioned cucumber hypocotyl segments and enhance the activity of other H2O2 elicitors. [Erratum: Nov 1999, v. 121 (3), p. 1057.]

Author:
Fauth, M.; Schweizer, P.; Buchala, A.; Markstadter, C.; Riederer, M.; Kato, T.; Kauss, H.
Source:
Plant physiology 1998 v.117 no.4 pp. 1373-1380
ISSN:
0032-0889
Subject:
protoplasts; cutin; ergosterol; cell wall components; hypocotyls; Cucumis sativus; chitosan; hydrogen peroxide; plant cuticle; surfaces; mechanical damage; pH; hydrolysis; Malus domestica; hydrophobicity; saturated fatty acids; leaves; Solanum lycopersicum var. lycopersicum
Abstract:
... Hypocotyls from etiolated cucumber (Cucumis sativus L.) seedlings were gently abraded at their epidermal surface and cut segments were conditioned to develop competence for H2O2 elicitation. Alkaline hydrolysates of cutin from cucumber, tomato, and apple elicited H2O2 in such conditioned segments. The most active constituent of cucumber cutin was identified as dodecan-1-ol, a novel cutin monomer c ...

4. Differential induction of lipoxygenase isoforms in wheat upon treatment with rust fungus elicitor, chitin oligosaccharides, chitosan, and methyl jasmonate

Author:
Bohland, C.; Balkenhohl, T.; Loers, G.; Feussner, I.; Grambow, H.J.
Source:
Plant physiology 1997 v.114 no.2 pp. 679-685
ISSN:
0032-0889
Subject:
protein synthesis; dose response; chitosan; seedlings; jasmonic acid; linoleate 13S-lipoxygenase; Puccinia graminis; Triticum aestivum; leaves; plant pathogenic fungi; oligosaccharides; chitin; enzyme activity; isozymes; protein composition
Abstract:
... A glycopeptide elicitor prepared from germ tubes of the rust fungus Puccinia graminis Pers. f. sp. tritici Erikss. & Henn (Pgt),as well as chitin oligosaccharides, chitosan, and methyl jasmonate (MJ) stimulated lipoxygenase (LOX) activity (E.C. 1.13.11.12) in wheat (Triticum aestivum) leaves. Immunoblot analysis using anti-LOX antibodies revealed the induction of 92- and 103-kD LOX species after P ...

5. Influence of salicylic acid on the induction of competence for H2O2 elicitation: comparison of ergosterol with other elicitors

Author:
Kauss, H.; Jeblick, W.
Source:
Plant physiology 1996 v.111 no.3 pp. 755-763
ISSN:
0032-0889
Subject:
ergosterol; Phytophthora sojae; hypocotyls; Cucumis sativus; hydrogen peroxide; chitosan; plant pathogenic fungi; disease resistance; salicylic acid; induced resistance; niacin; hypersensitive response; defense mechanisms
Abstract:
... Hypocotyls from etiolated cucumber (Cucumis sativus L.) seedlings were gently abraded at their epidermal surface, and cut segments were used to study the rapid and transient elicitation of H2O2 by ergosterol, chitosan, mastoparan, and a polymeric fungal elicitor. Freshly abraded segments were only barely competent for any H2O2 production, but they developed this competence subsequent to abrasion. ...

6. Oligogalacturonic acid and chitosan reduce stomatal aperture by inducing the evolution of reactive oxygen species from guard cells of tomato and Commelina communis

Author:
Lee, S.; Choi, H.; Suh, S.; Doo, I.S.; Oh, K.Y.; Choi, E.J.; Taylor, A.T.S.; Low, P.S.; Lee, Y.
Source:
Plant physiology 1999 v.121 no.1 pp. 147-152
ISSN:
0032-0889
Subject:
stomatal movement; guard cells; inorganic ions; interspecific variation; chemical reactions; Commelina communis; chitosan; catalase; chelating agents; defense mechanisms; hydrogen peroxide; calcium; ascorbic acid; cell wall components; stomata; light; oxygen; galacturonic acid; Solanum lycopersicum var. lycopersicum
Abstract:
... Stomatal opening provides access to inner leaf tissues for many plant pathogens, so narrowing stomatal apertures may be advantageous for plant defense. We investigated how guard cells respond to elicitors that can be generated from cell walls of plants or pathogens during pathogen infection. The effect of oligogalacturonic acid (OGA), a degradation product of the plant cell wall, and chitosan (bet ...
PubMed:
10482669
PubMed Central:
PMC59362

7. A wound-inducible potato proteinase inhibitor gene expressed in non-tuber-bearing species is not sucrose inducible

Author:
Hansen, J.D.; Hannapel, D.J.
Source:
Plant physiology 1992 v.100 no.1 pp. 164-169
ISSN:
0032-0889
Subject:
Solanum lycopersicum var. lycopersicum; Solanum etuberosum; Solanum palustre; Solanum tuberosum; structural genes; multigene family; proteinase inhibitors; gene expression; abiotic stress; leaves; sucrose; chitosan; explants
Abstract:
... Sequences homologous to a potato cathepsin D inhibitor cDNA, p749, were identified in the genomic DNA of tomato (Lycopersicon esculentum) and of two non-tuber-bearing potato species (Solanum etuberosum and S. brevidens) by means of Southern blot analysis. The expression of these p749 genes in leaves was induced at the RNA level in response to wounding. High levels of p749 transcripts were detected ...
DOI:
10.1104/pp.100.1.164
PubMed:
16652941