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Titolo:
Novel infection process in the indeterminate root nodule symbiosis betweenChamaecytisus proliferus (tagasaste) and Bradyrhizobium sp.
Autore:
Vega-Hernandez, MC; Perez-Galdona, R; Dazzo, FB; Jarabo-Lorenzo, A; Alfayate, MC; Leon-Barrios, M;
Indirizzi:
Univ La Laguna, Fac Farm, Dept Microbiol & Biol Celular, La Laguna 38071, Tenerife, Spain Univ La Laguna La Laguna Tenerife Spain 38071 guna 38071, Tenerife, Spain Michigan State Univ, Dept Microbiol, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 obiol, E Lansing, MI 48824 USA Michigan State Univ, Ctr Microbial Ecol, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 Ecol, E Lansing, MI 48824 USA
Titolo Testata:
NEW PHYTOLOGIST
fascicolo: 3, volume: 150, anno: 2001,
pagine: 707 - 721
SICI:
0028-646X(200106)150:3<707:NIPITI>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEGUMINOSARUM BIOVAR TRIFOLII; PARASPONIA-ANDERSONII; RHIZOBIUM-MELILOTI; SESBANIA-ROSTRATA; LEGUME NODULATION; STEM NODULES; WHITE CLOVER; EXOPOLYSACCHARIDE; DIFFERENTIATION; PALMENSIS;
Keywords:
tagasaste (Chamaecytisus proliferus); Rhizobium-legume symbiosis; Bradyrhizobium sp.; crack entry; infection; nodulation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
55
Recensione:
Indirizzi per estratti:
Indirizzo: Leon-Barrios, M Univ La Laguna, Fac Farm, Dept Microbiol & Biol Celular, La Laguna 38071, Tenerife, Spain Univ La Laguna La Laguna Tenerife Spain 38071 rife, Spain
Citazione:
M.C. Vega-Hernandez et al., "Novel infection process in the indeterminate root nodule symbiosis betweenChamaecytisus proliferus (tagasaste) and Bradyrhizobium sp.", NEW PHYTOL, 150(3), 2001, pp. 707-721

Abstract

The main characteristics of the symbiosis of tagasaste (Chamaecytisus proliferus ssp. proliferus var. palmensis), a woody legume forming N-2-fixing indeterminate nodules in response to infection by strains of Bradyrhizobium sp. (Chamaecytisus), are reported here. The infection process in this legume was examined by bright field, phase contrast and transmission electron microscopy, and was found to be unlike any other previously described. First steps in the infection process involve initiation of infection threads within deformed root hairs and induction of foci of host-cell divisions in the inner root cortex. However, infection of root hairs aborts early, and instead, the bacteria use the crack-entry mode of host infection, wherebythey penetrate the periphery of the emerging nodule through an intercellular route, eventually infecting host nodule cells directly through altered cell walls. No successful infection threads were detected at any stage of primary-host infection or nodule invasion. Indeterminate nodules were mainly formed on unbranched areas of lateral roots. This is the first description of such a combination of events in an infection process in the Rhizobium-legume root-nodule symbiosis.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 14:09:36