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Titolo:
THE FLAVONOID NARINGENIN STIMULATES THE INTERCELLULAR COLONIZATION OFWHEAT ROOTS BY AZORHIZOBIUM-CAULINODANS
Autore:
WEBSTER G; JAIN V; DAVEY MR; GOUGH C; VASSE J; DENARIE J; COCKING EC;
Indirizzi:
UNIV NOTTINGHAM,CTR CROP NITROGEN FIXAT,PLANT SCI DIV,UNIV PK NOTTINGHAM NG7 2RD ENGLAND UNIV NOTTINGHAM,CTR CROP NITROGEN FIXAT,PLANT SCI DIV NOTTINGHAM NG7 2RD ENGLAND INRA,LAB BIOL MOL RELAT PLANTES MICROORGANISMS,CNRS F-31326 CASTANET TOLOSAN FRANCE
Titolo Testata:
Plant, cell and environment
fascicolo: 4, volume: 21, anno: 1998,
pagine: 373 - 383
SICI:
0140-7791(1998)21:4<373:TFNSTI>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
AMINOLEVULINIC-ACID SYNTHETASE; RHIZOBIUM-MELILOTI; SESBANIA-ROSTRATA; AZOSPIRILLUM-BRASILENSE; PARASPONIA-ANDERSONII; STEM NODULES; NOD LOCUS-1; GEN-NOV; NODULATION; LEGUME;
Keywords:
AZORHIZOBIUM CAULINODANS ORS571; AZOSPIRILLUM BRASILENSE; CRACK ENTRY; ENDOPHYTIC NITROGEN FIXATION; INTERCELLULAR COLONIZATION; LATERAL ROOT CRACKS; NARINGENIN; NON-LEGUME; REPORTER GENES; RHIZOBIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
66
Recensione:
Indirizzi per estratti:
Citazione:
G. Webster et al., "THE FLAVONOID NARINGENIN STIMULATES THE INTERCELLULAR COLONIZATION OFWHEAT ROOTS BY AZORHIZOBIUM-CAULINODANS", Plant, cell and environment, 21(4), 1998, pp. 373-383

Abstract

We have studied intercellular colonization of wheat roots by Azorhizobium caulinodans and other diazotrophic bacteria, using strains markedwith the lacZ reporter gene to facilitate their detection and identification. A. caulinodans was observed by light and electron microscopy to enter the roots of wheat at high frequency at the points of emergence of lateral roots (lateral root cracks). After lateral root crack colonization, bacteria moved into intercellular spaces within the cortical cell layer of roots. The flavonoid naringenin at 10 and 100 mmol m(-3) significantly stimulated root colonization. The roles of the structural nodABC genes and the regulatory nodD gene were also studied; lateral root crack colonization of wheat was shown to be Nod factor- and NodD-independent. Similar frequencies of lateral root crack colonization were observed following inoculation of wheat with Azospirillum brasilense. Colonization by A. brasilense was stimulated by naringenin andalso by other flavonoid molecules.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 21:48:05