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A 10 -day old colony of Colletotrichum siamense, (a) upper surface, (b) lower surface, (c) conidia, and (d) appressoria. Figure 5: A 10 -day old colony of Colletotrichum endophytica on PDA, (a) upper surface, (b) lower surface, (c) conidia, and (d) appressoria.
Source publication
Avocado (Persea americana) is a sub-tropical fruit with high nutritional value and numerous health benefits. Among the postharvest fungal diseases that affect ripe avocados, anthracnose is one of the most destructive disease worldwide, causing significant postharvest fruit losses and limiting shelf life. Over 15 Colletotrichum species have been rep...
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... cultures produced both ovoid and lobed appressoria. Appressoria were initially pale brown color and later turned dark brown ( Figure 5). ...
Similar publications
Avocado (Persea americana) is a subtropical fruit with high nutritional value and numerous health benefits. Among the postharvest fungal diseases that affect ripe avocados, anthracnose is one of the most destructive disease worldwide, causing significant postharvest fruit losses and limiting shelf life. Over 15 Colletotrichum species have been repo...
Anthracnose caused by Colletotrichum species is one of the most frequent and damaging fungal diseases affecting avocado fruits (Persea americana Mill.) worldwide. In Chile, the disease incidence has increased over the last decades due to the establishment of commercial groves in more humid areas. Since 2018, unusual symptoms of anthracnose have bee...
Citations
... Zealand (Hofer et al., 2021) and Sri Lanka (Dissanayake et al., 2021;Hunupolagama et al., 2015). However, a comprehensive study investigating the diversity, phylogeny and pathogenicity of Colletotrichum species associated with avocado in Thailand is lacking. ...
... Therefore, we agree with synonymizing C. pandanicola and C. parvisporum as C. siamense, as discussed by Zhang et al. (2023). In addition to C. fructicola and C. siamense, there has been only one other report of C. endophytica on avocado (Dissanayake et al., 2021) and it has not been properly studied. ...
Avocado production is restricted globally by the anthracnose disease caused by
Colletotrichum species. In Thailand, anthracnose symptoms can be found on avocado leaves and fruits, and it is an important postharvest disease, reducing the
shelf life of the fruits and causing huge economic losses. Avocado leaves and fruits
showing anthracnose disease were collected from Chiang Rai province, located in
northern Thailand, and the Colletotrichum species isolated from the samples were
identified based on morphological examination and multigene phylogenetic analyses. Phylogenetic analyses using five loci (ITS, ACT, CHS-1, GAPDH and TUB2) coupled with the morphology of 11 isolates showed that they belonged to four known species of Colletotrichum. Colletotrichum endophytica, C. fructicola and C. siamense are illustrated as new geographical records, and C. henanense is characterized as a new host record. Furthermore, the pathogenicity of these species in avocado fruits and leaves (West Indian variety) has been proven. In addition, this study provides further evidence for the synonymization of C. pandanicola and C. parvisporum with C. siamense.
