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Titolo:
Mycoplasmas, plants, insect vectors: a matrimonial triangle
Autore:
Garnier, M; Foissac, X; Gaurivaud, P; Laigret, F; Renaudin, J; Saillard, C; Bove, JM;
Indirizzi:
INRA, Inst Biol Vegetale Mol, Biol Cellulaire & Mol Lab, UMR Genom Dev Pouvoir Pathogene, F-33883 Villenave Dornon, France INRA Villenave Dornon France F-33883 e, F-33883 Villenave Dornon, France
Titolo Testata:
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE III-SCIENCES DE LA VIE-LIFE SCIENCES
fascicolo: 10, volume: 324, anno: 2001,
pagine: 923 - 928
SICI:
0764-4469(200110)324:10<923:MPIVAM>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPIROPLASMA-CITRI; FRUCTOSE UTILIZATION; STUBBORN DISEASE; TOBACCO PLANTS; PATHOGENICITY; PHYTOPLASMA; EXPRESSION; ORGANISM; PROKARYOTES; PERIWINKLE;
Keywords:
mollicutes; mycoplasmas; phytoplasmas; spiroplasmas; phytopathology; pathogeny; leafhopper; psyllid; transmission;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Garnier, M INRA, Inst Biol Vegetale Mol, Biol Cellulaire & Mol Lab, UMR Genom Dev Pouvoir Pathogene, BP 81, F-33883 Villenave Dornon, France INRA BP 81 Villenave Dornon France F-33883 nave Dornon, France
Citazione:
M. Garnier et al., "Mycoplasmas, plants, insect vectors: a matrimonial triangle", CR AC S III, 324(10), 2001, pp. 923-928

Abstract

Plant pathogenic mycoplasmas were discovered by electron microscopy, in 1967, long after the discovery and culture in 1898 of the first pathogenic mycoplasma of animal origin, Mycoplasma mycoides. Mycoplasmas are Eubacteria of the class Mollicutes, a group of organisms phylogenetically related to Gram-positive bacteria. Their more characteristic features reside in the small size of their genomes, the low guanine (G) plus cytosine (C) content of their genomic DNA and the lack of a cell wall. Plant pathogenic mycoplasmasare responsible for several hundred diseases and belong to two groups: thephytoplasmas and the spiroplasmas. The phytoplasmas (previously called MLOs, for mycoplasma like organisms) were discovered first; they are pleiomorphic, and have so far resisted in vitro cultivation. Phytoplasmas represent the largest group of plant pathogenic Mollicutes. Only three plant pathogenic spiroplasmas are known today. Spiroplasma citri, the agent of citrus stubborn was discovered and cultured in 1970 and shown to be helical and motile. S. kunkelii is the causal agent of corn stunt. S. phoeniceum, responsible for periwinkle yellows, was discovered in Syria. There are many other spiroplasmas associated with insects and ticks. Plant pathogenic mycoplasmas are restricted to the phloem sieve tubes in which circulates the photosynthetically-enriched sap, the food for many phloem-feeding insects (aphids, leafhoppers, psyllids, etc.). Interestingly, phytopathogenic mycoplasmas are very specifically transmitted by leafhoppers or psyllid species. In this paper, the most recent knowledge on phytopathogenic mycoplasmas in relation with their insect and plant habitats is presented as well as the experiments carried out to control plant mycoplasma diseases, by expression of mycoplasma-directed-antibodies in plants (plantibodies). (C) 2001 Academie des Sciences/Editions scientificlues et medicales Elsevier SAS.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 02:25:59