First report of secondary leaf fall in rubber trees caused by Phyllosticta capitalensis in the Eastern Plains of Colombia
Rubber trees (Hevea brasiliensis) are planted on 65,545 hectares in Colombia (Minagricultura, 2021). Since September 2020, unusual leaf spots were observed on mature leaves of rubber trees (clones RRIM 600 and FX 3864), in three plantations in the Eastern Plains region. The regular spots (usuall...
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British Society for Plant Pathology and John Wiley & Sons
2024
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| Online Access: | https://onlinelibrary.wiley.com/doi/abs/10.1002/ndr2.12096 http://hdl.handle.net/20.500.12324/38781 |
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RepoAGROSAVIA38781 |
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Corporación Colombiana de Investigación Agropecuaria |
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Repositorio AGROSAVIA |
| language |
Inglés |
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Enfermedades de las plantas - H20 Caucho Phyllosticta Enfermedades de las plantas Permanentes http://aims.fao.org/aos/agrovoc/c_6678 http://aims.fao.org/aos/agrovoc/c_5822 http://aims.fao.org/aos/agrovoc/c_5962 |
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Enfermedades de las plantas - H20 Caucho Phyllosticta Enfermedades de las plantas Permanentes http://aims.fao.org/aos/agrovoc/c_6678 http://aims.fao.org/aos/agrovoc/c_5822 http://aims.fao.org/aos/agrovoc/c_5962 Guevara Agudelo, Elsa Judith Lopez Casallas, Marcela Rivano, Franck Castro Navarro, Olga Maria First report of secondary leaf fall in rubber trees caused by Phyllosticta capitalensis in the Eastern Plains of Colombia |
| description |
Rubber trees (Hevea brasiliensis) are planted on 65,545 hectares in
Colombia (Minagricultura, 2021). Since September 2020, unusual leaf
spots were observed on mature leaves of rubber trees (clones RRIM
600 and FX 3864), in three plantations in the Eastern Plains region.
The regular spots (usually 1–3 per leaf) were up to 8 mm in diameter,
with a clearly defined brownish to blackish margin and a necrotic centre (Figure 1). The disease led to secondary leaf fall, causing up to 30%
defoliation.
Diseased leaves were collected and transferred to the laboratory
for diagnosis. After surface disinfection with ethanol (70%) and sodium
hypochlorite (2%), 0.5 cm2 sections of diseased tissue were transferred
to potato dextrose agar (PDA) medium and incubated at 28◦C for two
weeks. The developing colonies had irregular borders and gradually
turned dark greyish-green in colour, then black (Figure 2a). Sporulation
was induced on a parboiled rice medium (Figure 2b) under controlled
conditions (12 hr photoperiod, relative humidity 50%, 26 ±2◦C). Pycnidia with conidia were observed after 44 days. Conidia (Figure 3a) were
small, single-celled, hyaline, ovoid to elongate, measuring 8–11×5-6
µm. Pycnidia were dark, ostiolate and lenticular to globose (Figure 3b).
These morphological characters were consistent with the descriptions
of Phyllosticta species (Wikee et al., 2013). |
| format |
article |
| author |
Guevara Agudelo, Elsa Judith Lopez Casallas, Marcela Rivano, Franck Castro Navarro, Olga Maria |
| author_facet |
Guevara Agudelo, Elsa Judith Lopez Casallas, Marcela Rivano, Franck Castro Navarro, Olga Maria |
| author_sort |
Guevara Agudelo, Elsa Judith |
| title |
First report of secondary leaf fall in rubber trees caused by Phyllosticta capitalensis in the Eastern Plains of Colombia |
| title_short |
First report of secondary leaf fall in rubber trees caused by Phyllosticta capitalensis in the Eastern Plains of Colombia |
| title_full |
First report of secondary leaf fall in rubber trees caused by Phyllosticta capitalensis in the Eastern Plains of Colombia |
| title_fullStr |
First report of secondary leaf fall in rubber trees caused by Phyllosticta capitalensis in the Eastern Plains of Colombia |
| title_full_unstemmed |
First report of secondary leaf fall in rubber trees caused by Phyllosticta capitalensis in the Eastern Plains of Colombia |
| title_sort |
first report of secondary leaf fall in rubber trees caused by phyllosticta capitalensis in the eastern plains of colombia |
| publisher |
British Society for Plant Pathology and John Wiley & Sons |
| publishDate |
2024 |
| url |
https://onlinelibrary.wiley.com/doi/abs/10.1002/ndr2.12096 http://hdl.handle.net/20.500.12324/38781 |
| work_keys_str_mv |
AT guevaraagudeloelsajudith firstreportofsecondaryleaffallinrubbertreescausedbyphyllostictacapitalensisintheeasternplainsofcolombia AT lopezcasallasmarcela firstreportofsecondaryleaffallinrubbertreescausedbyphyllostictacapitalensisintheeasternplainsofcolombia AT rivanofranck firstreportofsecondaryleaffallinrubbertreescausedbyphyllostictacapitalensisintheeasternplainsofcolombia AT castronavarroolgamaria firstreportofsecondaryleaffallinrubbertreescausedbyphyllostictacapitalensisintheeasternplainsofcolombia |
| _version_ |
1808106821995462656 |
| spelling |
RepoAGROSAVIA387812024-01-20T03:01:23Z First report of secondary leaf fall in rubber trees caused by Phyllosticta capitalensis in the Eastern Plains of Colombia Guevara Agudelo, Elsa Judith Lopez Casallas, Marcela Rivano, Franck Castro Navarro, Olga Maria Enfermedades de las plantas - H20 Caucho Phyllosticta Enfermedades de las plantas Permanentes http://aims.fao.org/aos/agrovoc/c_6678 http://aims.fao.org/aos/agrovoc/c_5822 http://aims.fao.org/aos/agrovoc/c_5962 Rubber trees (Hevea brasiliensis) are planted on 65,545 hectares in Colombia (Minagricultura, 2021). Since September 2020, unusual leaf spots were observed on mature leaves of rubber trees (clones RRIM 600 and FX 3864), in three plantations in the Eastern Plains region. The regular spots (usually 1–3 per leaf) were up to 8 mm in diameter, with a clearly defined brownish to blackish margin and a necrotic centre (Figure 1). The disease led to secondary leaf fall, causing up to 30% defoliation. Diseased leaves were collected and transferred to the laboratory for diagnosis. After surface disinfection with ethanol (70%) and sodium hypochlorite (2%), 0.5 cm2 sections of diseased tissue were transferred to potato dextrose agar (PDA) medium and incubated at 28◦C for two weeks. The developing colonies had irregular borders and gradually turned dark greyish-green in colour, then black (Figure 2a). Sporulation was induced on a parboiled rice medium (Figure 2b) under controlled conditions (12 hr photoperiod, relative humidity 50%, 26 ±2◦C). Pycnidia with conidia were observed after 44 days. Conidia (Figure 3a) were small, single-celled, hyaline, ovoid to elongate, measuring 8–11×5-6 µm. Pycnidia were dark, ostiolate and lenticular to globose (Figure 3b). These morphological characters were consistent with the descriptions of Phyllosticta species (Wikee et al., 2013). Caucho natural-Ficus elastica 2024-01-19T16:52:17Z 2024-01-19T16:52:17Z 2022 2022 article Artículo científico http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article https://purl.org/redcol/resource_type/ART http://purl.org/coar/version/c_970fb48d4fbd8a85 https://onlinelibrary.wiley.com/doi/abs/10.1002/ndr2.12096 2044-0588 http://hdl.handle.net/20.500.12324/38781 10.1002/ndr2.12096 reponame:Biblioteca Digital Agropecuaria de Colombia instname:Corporación colombiana de investigación agropecuaria AGROSAVIA eng New Disease Reports 45 2 1 4 Carbone, I. & Kohn, L.M. (1999) A method for designing primer sets for speciation studies in filamentous ascomycetes. Mycolo gia, 91, 553–556. https://doi.org/10.1080/00275514.1999.120610 51 Herath, I.H.M.I.S., Manamgoda, D.S. & Udayanga, D. (2019) Morphologi cal and molecular identification of fungal pathogens associated with cultivated rubber trees in Sri Lanka. Proceedings of the First National Symposium of Sri Lanka Association for Mycology and Plant Pathology Avail able at: https://slampp.org.lk/pubs/Proceedings-of-Plant-Health-2019. pdf [Accessed 9 March 2022]. Ministerio de Agricultura y Desarrollo Rural (Minagricultura) (2021) Cadena Caucho Indicadores, apoyos. Junio 2021. Available at: https://sioc.minagricultura.gov.co/Caucho/Documentos/2021-06- 30%20Cifras%20Sectoriales.pdf [Accessed 9 March 2022]. Narayanan, C. & Reju, M.J. (2020) Variation in susceptibility to Phyl losticta capitalensis-associated leaf disease among inter-specific hybrids, half-sibs and high-yielding clones of Para rubber tree (Hevea). Plant Pathology & Quarantine, 10, 100–110. https://doi.org/10. 5943/ppq/10/1/12 White, T.J., Bruns, T.D., Lee, S. & Taylor, S. (1990) Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. In: Innis, M.A., Gelfand, D.H., Sninsky, J.J. & White, T.J. (Eds.) PCR - Protocols and Applications - A Laboratory Manual, New York, NY: Academic Press, pp. 315–322. https://doi.org/10.1016/B978-0-12-372180-8.50042-1 Wikee, S., Lombard, L., Crous, P.W., Nakashima, C., Motohashi, K., Chukeatirote, E., et al. (2013) Phyllosticta capitalensis, a widespread endophyte of plants. Fungal Diversity, 60, 91–105. https://doi.org/ 10.1007/s13225-013-0235-8 Attribution-ShareAlike 4.0 International http://creativecommons.org/licenses/by-sa/4.0/ application/pdf application/pdf Colombia British Society for Plant Pathology and John Wiley & Sons Gran Bretaña (Inglaterra) New Disease Reports; Vol. 45, (2022): New Disease Reports;p. 1 -4. |