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Titolo:
IS THE LEGUME NODULE A MODIFIED ROOT OR STEM OR AN ORGAN SUI-GENERIS
Autore:
HIRSCH AM; LARUE TA;
Indirizzi:
UNIV CALIF LOS ANGELES,DEPT MOL CELL & DEV BIOL,405 HILGARD AVE LOS ANGELES CA 90095 UNIV CALIF LOS ANGELES,INST MOL BIOL LOS ANGELES CA 90095 CORNELL UNIV,BOYCE THOMPSON INST PLANT RES ITHACA NY 14853
Titolo Testata:
Critical reviews in plant sciences
fascicolo: 4, volume: 16, anno: 1997,
pagine: 361 - 392
SICI:
0735-2689(1997)16:4<361:ITLNAM>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
PISUM-SATIVUM-L; SYMBIOTIC NITROGEN-FIXATION; AUXIN TRANSPORT INHIBITORS; VICIA-FABA L; RHIZOBIUM-MELILOTI; MEDICAGO-TRUNCATULA; FLOWER DEVELOPMENT; PARASPONIA-RIGIDA; NODULATION GENES; ACTINORHIZAL SYMBIOSES;
Keywords:
LEGUME PHYLOGENY; HOMOLOGY; REGULATORY GENES; NODULE DEVELOPMENT;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
143
Recensione:
Indirizzi per estratti:
Citazione:
A.M. Hirsch e T.A. Larue, "IS THE LEGUME NODULE A MODIFIED ROOT OR STEM OR AN ORGAN SUI-GENERIS", Critical reviews in plant sciences, 16(4), 1997, pp. 361-392

Abstract

The legume nodule, which houses nitrogen-fixing rhizobia, is a uniqueplant organ. Its homology with lateral roots has been inferred by a comparison with other nitrogen-fixing nodules, especially those formed on actinorhizal plants in response to Frankia inoculation or on Parasponia roots following inoculation with Bradyrhizobium species. These nodules are clearly modified lateral roots in terms of their structure and development. However, legume nodules differ from lateral roots and these other nodules in their developmental origin, anatomy, and patterns of gene expression, and, consequently, several other evolutionary derivations, including from stems, wound or defense responses, or the more ancient vesicular-arbuscular mycorrhizal symbiosis, have been postulated for the legume nodule. In this review, we first present a broadview of the legume family showing the diversity of nodulation occurrence and types in the different subfamilies and particularly within thesubfamily Papilionoideae. We then define the typological and molecular criteria used to discriminate the basic organs - root, stem, leaf - of the plant. Finally, we discuss the possible origins of the legume nodule in terms of these typological and molecular bases.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 22:03:27