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A Contribution to the study of the distribution of Medicago-Sinorhizobium symbiosis in Sardinia (Italy)

Brundu, Giuseppe Antonio Domenico and Camarda, Ignazio and Caredda, Marco and Garau, Giovanni and Maltoni, Sara Lucia and Deiana, Pietrino (2004) A Contribution to the study of the distribution of Medicago-Sinorhizobium symbiosis in Sardinia (Italy). Agricoltura mediterranea, Vol. 134 (1), p. 33-48. ISSN 0394-0438. Article.

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Abstract

The paper summarizes the results of a Medicago-Sinorhizobium germplasm survey and collection carried out in the island of Sardinia (Italy) in 1998/99 and subsequent laboratory isolation of microbial strains, soil sample analyses and determination of Medicago species. According to a stratified sampling methodology, the major ecological characteristics of island's habitats were taken into account, collecting and surveying mostly in natural or semi-natural habitats (no roadside sites nor cultivated fields were sampled). Forty-six sites, widely distributed in semi-natural representative areas of Sardinia, ranging from sea level to above 1000 m asl, were sampled and 24 were surveyed to gather additional data on species distribution. Root nodules were collected from 15 species (13 annuals) out of the total 21 Medicago species recorded in Sardinia. Isolation of root nodule bacteria accessions and identification of 29 strains were achieved. A total number of 17 species were surveyed and mapped. The present study gives a first contribution to the knowledge of the present distribution of the species of the genus Medicago in Sardinia with special concern to the species recorded or sampled during the survey and highlights the presence of Medicago biodiversity hot spots.

Item Type:Article
ID Code:1982
Status:Published
Refereed:Yes
Uncontrolled Keywords:Medicago species, natural or semi-natural habitats, root nodule bacteria, Sardinia
Subjects:Area 05 - Scienze biologiche > BIO/02 Botanica sistematica
Area 07 - Scienze agrarie e veterinarie > AGR/16 Microbiologia agraria
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze botaniche, ecologiche e geologiche
002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto di ricerca sul controllo biologico dell'ambiente, Sassari
001 Università di Sassari > 01 Dipartimenti > Scienze ambientali agrarie e biotecnologie agro-alimentari
Publisher:Edizioni PLUS - Università di Pisa
ISSN:0394-0438
Publisher Policy:Depositato per gentile concessione dell'Editore
Deposited On:18 Aug 2009 10:06

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