ENGLISH ACCESSIBILITA' ALTA
Torna alla Home Page Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria Cerca nel sito...  

Carta europea dei ricercatori      HR EXCELLENCE IN RESEARCH
CREA - Via Po, 14 - 00198 ROMA
P.IVA: 08183101008 - C.F.: 97231970589
Tel: +39 06 478361 - Fax: +39 06 47836320 -
Posta Elettronica Certificata:

ACCESSO CIVICO RASSEGNA STAMPA URP LAVORO/FORMAZIONE GARE/APPALTI AMMINISTRAZIONE TRASPARENTE

freccina Sei qui: Home->Pubblicazioni->Dettaglio POSTA


Scheda pubblicazione
Titolo:
FUSARIUM FUJIKUROI ASSOCIATED WITH BAKANAE DISEASE OF RICE IN SOUTHERN LAO PDR.
Autori:
Scherm, B.; Infantino, A.; Balmas, V.; Aragona, M.; Ireland, K.; Phantavong, S.; Phitsanoukane, P.; Vongvichid, K.; Burgess, L.
Anno:
2015
Lingue:
ENG, eng
Rivista:
Book of Abstract 13th European Fusarium Seminar, Martina Franca (TA), Italy, 11-14 maggio 2015.
Tipo di pubblicazione:
Cartaceo
Luogo:
Editore:
Riassunto in Italiano:
Riassunto in Inglese:
Samples of rice plants, showing typical symptoms of bakanae disease were collected in 2013 and 2014 from three provinces in southern Laos: Champasak; Saravan and Savannakhet. Symptomatic plants were scattered but easy to detect due to the abnormal stem elongation. However there were some stunted plants with symptoms of stem base browning and necrosis. These were also collected. The presence of white-violet mycelium was occasionally observed on the stem of diseased plants. Up to 20 plants were collected from each sampling site. Isolations were attempted by plating a 2 cm length including the 2nd node from one symptomatic stem of each plant. Two hundred and seventeen colonies were isolated. Monosporic cultures were grown on CLA and were morphologically identified. Ninety five percent of the fungal isolates recovered were F. fujikuroi. A total of 12 populations, ranging from 9 to 24, were selected. In order to confirm the morphological identification, DNA was extracted from these isolates and a species-specific PCR was conducted on each with primers Fuji1F (5- ACGTGTCAAACTAAACATTCGA-3) and TEF1R (5-GCGACAACATACCAATGACG- 3). Mating type distribution within each population was assessed by PCR using primer pairs M1C-5/M1C-13, and M2C-9/ M2C-4, specific for MAT-1 and for MAT-2 alleles, respectively. The results will be presented in the poster. The etiology of bakanae disease in Laos has not been clearly defined to the best of our knowledge although the has been reported. In this note we clearly demonstrate that F. fujikuroi is the causative agent of bakanae in southern Laos. The disease is not a serious problem in the Lao PDR and is mainly found in traditional varieties that farmers prefer for home consumption. It is rarely seen in modern higher-yielding rice varieties. Thus the situation in the Lao PDR differs from Italy where the disease is causing concern in modern varieties.

AREA RISERVATA  Webmaster:
Logo mySQL Logo PHP