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Titolo:
Differential expression of eight chitinase genes in Medicago truncatula roots during mycorrhiza formation, nodulation, and pathogen infection
Autore:
Salzer, P; Bonanomi, A; Beyer, K; Vogeli-Lange, R; Aeschbacher, RA; Lange, J; Wiemken, A; Kim, D; Cook, DR; Boller, T;
Indirizzi:
Univ Basel, Inst Bot, CH-4056 Basel, Switzerland Univ Basel Basel Switzerland CH-4056 nst Bot, CH-4056 Basel, Switzerland Texas A&M Univ, Dept Plant Pathol & Microbiol, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 robiol, College Stn, TX 77843 USA Texas A&M Univ, Crop Biotechnol Ctr, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 ol Ctr, College Stn, TX 77843 USA
Titolo Testata:
MOLECULAR PLANT-MICROBE INTERACTIONS
fascicolo: 7, volume: 13, anno: 2000,
pagine: 763 - 777
SICI:
0894-0282(200007)13:7<763:DEOECG>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
FUNGUS GLOMUS INTRARADICES; CLASS-II CHITINASE; MESSENGER-RNA; RHIZOCTONIA-SOLANI; RHIZOBIUM-MELILOTI; PLANT CHITINASES; NOD FACTORS; N-ACETYLCHITOOLIGOSACCHARIDES; EXTRACELLULAR ALKALINIZATION; SYMBIOTIC INTERACTION;
Keywords:
chalcone synthase; trehalase;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
80
Recensione:
Indirizzi per estratti:
Indirizzo: Salzer, P Univ Basel, Inst Bot, Hebelstr 1, CH-4056 Basel, Switzerland Univ Basel Hebelstr 1 Basel Switzerland CH-4056 el, Switzerland
Citazione:
P. Salzer et al., "Differential expression of eight chitinase genes in Medicago truncatula roots during mycorrhiza formation, nodulation, and pathogen infection", MOL PL MICR, 13(7), 2000, pp. 763-777

Abstract

Expression of eight different chitinase genes, representing members of five chitinase classes, was studied in Medicago truncatula roots during formation of arbuscular mycorrhiza with Glomus intraradices, nodulation with Rhizobium meliloti, and pathogen attack by Phytophthora megasperma f. sp. medicaginis, Fusarium solani f. sp. phaseoli (compatible interactions with root rot symptoms), Ascochyta pisi (compatible, symptomless), and F. solani f. sp. pisi (incompatible, nonhost interaction). In the compatible plant-pathogen interactions, expression of class I, II, and IV chitinase genes was enhanced. The same genes were induced during nodulation. Transcripts of class Iand II chitinase genes accumulated transiently during early stages of the interaction, and transcripts of the class IV chitinase gene accumulated in mature nodules, The pattern of chitinase gene expression in mycorrhizal roots was markedly different: Expression of class I, II, and IV chitinase genes was not enhanced, whereas expression of three class III chitinase genes, with almost no basal expression, was strongly induced. Two of these three (Mtchitinase III-2 and Mtchitinase III-3) were not induced at all in interactions with pathogens and rhizobia Thus, the expression of two mycorrhiza-specific class III chitinase genes can be considered a hallmark for the establishment of arbuscular mycorrhiza in Medicago truncatula.

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Documento generato il 04/07/20 alle ore 21:27:46