INVESTIGADORES
MASUELLI Ricardo Williams
artículos
Título:
Identification, Pathogenicity and Distribution of Penicillium spp. isolated from Garlic in two regions in Argentina.
Autor/es:
VALDEZ, J.G.; MAKUCH, M.A.; ORDOVINI, A.F.; FRISVAD, J.C.; OVERY, D.P.; MASUELLI, R.W.; PICCOLO, R
Revista:
PLANT PATHOLOGY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Año: 2009 p. 352 - 361
ISSN:
0032-0862
Resumen:
A total of 147 samples of garlic (
Allium sativum
) bulbs affected by blue mould were obtained from a variety of agroclimatic
districts between December 1999 and February 2000.
Penicillium
species were identified using both morphological and
chemotaxonomic characteristics.
Penicillium allii
was the predominant species isolated (81·8%) in this survey and
the only species proven to be pathogenic on garlic. Other species were isolated much less frequently:
P. chrysogenum
(13·7%),
P. brevicompactum
(2·8%),
P. phoeniceum
(0·9%),
P. aurantiogriseum
(0·6%) and
P. flavigenum
(0·2%).
Colonies of
P. allii
could be classified into four morphotypes and their distribution seemed to be influenced by seed trade
and agricultural practices.
Penicillium allii
isolates were grouped into three aggressiveness phenotypes (low, medium and
high) based on their ability to cause disease during field trials on susceptible (Fuego INTA) and less susceptible (Castaño
INTA) garlic cultivars. The number of surviving plants at 191 days after planting and postharvest bulb weight contributed
the most towards aggressiveness modelling.