Colletotrichum clavatum sp. nov. identified as the causal agent of olive anthracnose in Italy

Colletotrichum clavatum sp. nov. identified as the causal agent of olive anthracnose in Italy

Roberto Faedda, Giovanni Enrico Agosteo, Leonardo Schena, Saveria Mosca, Salvatore Frisullo. Gaetano Magnano Di San Lio and Santa Olga Cacciola | View Article Molecular analyses of a large population of isolates, previously identified as group B or genetic group A4 of the Colletotrichum acutatum species complex, mainly of Italian origin from olive, but also from other hosts collected since 1992, confi rmed a well-resolved phylogenetic lineage with distinctive phenotypic characters which can be recognized as a separate species. Based on RAPD genomic fi ngerprinting, ITS and β-tubulin DNA sequences, this species was clearly distinct from C. acutatum sensu stricto, C. fi oriniae and C. simmondsii as well as from the genetic groups A1, A6, A7 and A8, all previously referred to as C. acutatum sensu lato. Group A4 is widespread in Europe, being responsible for olive anthracnose epidemics in some Mediterranean countries, including Greece, Italy, Montenegro, Portugal and Spain; moreover, it causes anthracnose diseases on a wide range of other hosts including about 20 different genera of woody and herbaceous plants, ornamentals and fruit trees. This new anamorphic taxon is described as Colletotrichum clavatum sp....
First report of olive anthracnose caused by Colletotrichum gloeosporioides in Tunisia

First report of olive anthracnose caused by Colletotrichum gloeosporioides in Tunisia

Ali Rhouma, Mohamed Ali Triki and Monji Msallem | View Article Ripe and overripe olive fruits (cv. Meski, Manzanilla and Picholine) showing circular spots 1 to 10 mm in diameter, slightly depressed and reddish-brown in color, were collected from local markets and orchards located in the regions of Takelsa, Zarzis and Rgueb in Tunisia. Colletotrichum gloeosporioides was isolated from symptomatic fruits and Koch’s postulates were fulfilled. This is the first report of Colletotrichum gloeosporioides causing anthracnose of olives in...
Neofusicoccum luteum associated with leaf necrosis and fruit rot of olives

Neofusicoccum luteum associated with leaf necrosis and fruit rot of olives

Vera Sergeeva, Artur Alves and Alan J.L. Phillips | View Article Neofusicoccum luteum is reported for the first time from olives (Olea europaea), causing fruit rot and leaf necrosis. Affected fruits initially became brown with pycnidia developing on the surface, later drying out and becoming mummified. The fungus was shown to be pathogenic on both fruits and leaves. The association of Botryosphaeriaceae with rotting olive fruits in Mediterranean regions and in New South Wales, Australia indicates that these fungi play a significant role in fruit rots of olives and deserve greater...