First report of Diaporthe ambigua causing Phomopsis stem canker on sunflower in Argentina
Phomopsis stem canker, a disease emerging on sunflower (Helianthus annuus) in response to environmental change, has already been described in Argentina with Diaporthe helianthi as the main aetiological agent (Ridao et al., 1994). During a survey (2020-2021) in the Argentinian sunflower-growing region of Pampeane, 208 sunflower plants with canker symptoms were collected from 75 cultivated fields (Fig. 1). Necrotic triangular dark leaf lesions invaded the stem, forming a conspicuous brown to black canker at the corresponding nodes.
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| Main Authors: | , , , |
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| Format: | info:ar-repo/semantics/artículo biblioteca |
| Language: | eng |
| Published: |
Wiley
2023-07-25
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| Subjects: | Hongos, Organismos Patógenos, Girasol, Pathogens, Fungi, Sunflowers, Argentina, Phomopsis, Diaporthe, Cancro, Diaporthe ambigua, |
| Online Access: | http://hdl.handle.net/20.500.12123/14968 https://bsppjournals.onlinelibrary.wiley.com/doi/10.1002/ndr2.12204 https://doi.org/10.1002/ndr2.12204 |
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| Summary: | Phomopsis stem canker, a disease emerging on sunflower (Helianthus annuus) in response to environmental change, has already been described in Argentina with Diaporthe helianthi as the main aetiological agent (Ridao et al., 1994). During a survey (2020-2021) in the Argentinian sunflower-growing region of Pampeane, 208 sunflower plants with canker symptoms were collected from 75 cultivated fields (Fig. 1). Necrotic triangular dark leaf lesions invaded the stem, forming a conspicuous brown to black canker at the corresponding nodes. |
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