First Report of Anthracnose of Olive Fruit Caused by <i>Colletotrichum theobromicola</i> in Argentina

Lima, Nelson; Pastor, Silvina Estela; Maza, Claudia; Conforto, Erica Cinthia; Vargas-Gil, Silvina; Roca, Mónica Esther María

doi:10.1094/pdis-06-19-1207-pdn

Cited by 8 publications

(3 citation statements)

References 3 publications

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“…Isolates used as references in the Inter Simple Sequence Repeat (ISSR) analysis are emphasized in bold type. * = Ex-type strain; Table S2: Isolates and reference strains used in this study, with collection details and GenBank accession numbers (newly generated sequences are indicated in bold); Table S3: Binary matrix representing the absence (0) or presence (1) of a DNA fragment generated by the Inter Simple Sequence Repeat (ISSR) primers (AG) 8 YT and (CAG) 5 for the 212 Colletotrichum isolates obtained in Portugal and for the 19 Colletotrichum isolates used as reference isolates in this study: Table S4: Presence of olive anthracnose symptoms and pathogen identification in the 2018 and 2019 surveys conducted in 23 locations representing different types of olive groves with diverse cultivars located at Beira Baixa [1], Alentejo [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], and Algarve [18][19][20][21][22][23].…”

Section: Supplementary Materialsmentioning

confidence: 99%

Olive Anthracnose in Portugal Is Still Mostly Caused by Colletotrichum nymphaeae, but C. acutatum Is Spreading and C. alienum and C. cigarro Are Reported for the First Time

Cabral,

Nascimento,

Azinheira

et al. 2024

Horticulturae

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Olive anthracnose, caused by Colletotrichum fungi, is responsible for major fruit yield losses and poor olive oil quality worldwide. In the Mediterranean basin, some Colletotrichum spp. appear to be replacing others, possibly due to climate change and modification in cultural systems. To update the situation in Portugal, 525 olive groves were surveyed throughout the country over two years, revealing a decrease in disease incidence, associated with scarcer rainfall and new cropping systems using less susceptible cultivars. A collection of 212 isolates was obtained, and phylogenetic analyses using a multi-locus sequencing approach (five and six loci in the acutatum and gloeosporioides species complex, respectively) revealed the presence of seven Colletotrichum species within the collection. Compared to surveys conducted in the first decade of the 21st century, the species composition of olive anthracnose pathogens in Portugal remains mostly unchanged, with C. nymphaeae as the prevalent species, followed by C. godetiae, but with C. acutatum geographically expanding and with C. alienum and C. cigarro being reported for the first time as causal agents of olive anthracnose in Portugal. A close attention to pathogen population shifts, in the context of climate change and modification of cultivation systems, is fundamental for anticipating plant protection measures.

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Section: Supplementary Materialsmentioning

confidence: 99%

Olive Anthracnose in Portugal Is Still Mostly Caused by Colletotrichum nymphaeae, but C. acutatum Is Spreading and C. alienum and C. cigarro Are Reported for the First Time

Cabral,

Nascimento,

Azinheira

et al. 2024

Horticulturae

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“…The olive tree, Olea europaea L. (Oleaceae), is cultivated extensively worldwide in climates apart from the Mediterranean, with growing oil and fruit production (Guex et al 2018). This plant was introduced in the Americas and cultivated in Argentina, Chile, the USA (California, Florida, Hawaii, and Texas) and Brazil (Minas Gerais and Rio Grande do Sul) (Wrege et al 2015;Allan & Gillett-Kaufman 2018;Lima et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Physiological Aspects of Olea europaea (Oleaceae) Attacked by Saissetia oleae (Hemiptera: Coccidae)

Santos

Reis

Ferreira

et al. 2022

Florida Entomologist

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“…Colletotrichum siamense was found to be associated with OA in Australia and, differently from C. karsti , in artificial inoculations on detached olives proved to be aggressive (Moral et al, 2021; Schena et al, 2014). Colletotrichum theobromicola , alone or in association with other Colletotrichum species, was reported as causal agent of anthracnose in Australia and South America (Lima et al, 2020; Moreira et al, 2021; Schena et al, 2014), and in artificial inoculations on detached olives proved to be very aggressive (Schena et al, 2014). It has not been reported so far as a pathogen of olive in the northern hemisphere but has been intercepted in Israel as causal agent of fruit anthracnose on avocado ( Persea americana ) and leaf spot on cyclamen ( Cyclamen persicum ) (Sharma et al, 2017, 2016).…”

Section: Introductionmentioning

confidence: 99%

Secondary metabolites produced byColletotrichumspp. on different olive cultivars

Riolo

Luz

Santilli³

et al. 2022

Preprint

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This study was aimed to characterize the secondary metabolites produced by four Colletotrichum species, C. acutatum, C. gloeosporioides, C. godetiae and C. karsti, both in vitro, on potato dextrose agar (PDA) and oatmeal agar (OA), and during the infection process of fruits of four olive cultivars differing in susceptibility to anthracnose, Coratina and Ottobratica, both susceptible, Frantoio and Leccino, both resistant. The metabolites were extracted from axenic cultures after seven days incubation and from olives at three different times, 1, 3 and 7 days post inoculation (dpi). They were identified using the HPLC-QTOF analysis method. In total, as many as 45 diverse metabolites were identified; of these 29 were detected on infected olives and 26 in axenic cultures on agar media (OA and PDA). Only 10 metabolites were present in both fruits and axenic cultures while 19 were found exclusively on olives and 16 exclusively in axenic cultures. The 45 identified metabolites comprised fatty acid, phenolics, pyrones, sterols, terpenes and miscellaneous compounds. Each Colletotrichum species produced a different spectrum of metabolites depending of the type of matrices. On artificially inoculated olives the severity of symptoms, the amount of fungal secondary metabolites and their number peaked 7 dpi irrespective of the cultivar susceptibility and the virulence of the Colletotrichum species. The metabolite profiles as represented by heat maps were the result of the interaction olive cultivar x Colletotrichum species.

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First Report of Anthracnose of Olive Fruit Caused by Colletotrichum theobromicola in Argentina

Cited by 8 publications

References 3 publications

Olive Anthracnose in Portugal Is Still Mostly Caused by Colletotrichum nymphaeae, but C. acutatum Is Spreading and C. alienum and C. cigarro Are Reported for the First Time

Olive Anthracnose in Portugal Is Still Mostly Caused by Colletotrichum nymphaeae, but C. acutatum Is Spreading and C. alienum and C. cigarro Are Reported for the First Time

Physiological Aspects of Olea europaea (Oleaceae) Attacked by Saissetia oleae (Hemiptera: Coccidae)

Secondary metabolites produced byColletotrichumspp. on different olive cultivars

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