Aphelenchoides besseyiParasitizing Common Bean in Brazil
| Autor: | Andressa Cristina Zamboni Machado, Michele Corpolato Maia da Silva, Santino Aleandro da Silva, Maurício Conrado Meyer, L. Favoreto, Angélica Calandrelli |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine food and beverages Plant Science Biology biology.organism_classification 01 natural sciences Foliar nematode 03 medical and health sciences Horticulture 030104 developmental biology Nematode Aphelenchoides besseyi Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Plant Disease. 105:748-751 |
| ISSN: | 1943-7692 0191-2917 |
| Popis: | Aphelenchoides besseyi is the causal agent of soybean green stem and foliar retention syndrome known as “Soja Louca II.” This nematode has recently been reported parasitizing cotton in Brazil. In Costa Rica, it causes the symptoms known as “amachamiento” and false angular spots in common bean (Phaseolus vulgaris). Due to the great importance of beans to Brazilian agriculture, the objective of this research was to study the pathogenicity of A. besseyi in common bean under greenhouse conditions, including its endoparasitic relationships by staining root and shoot system tissues with fuchsin acid. In addition, A. besseyi was collected and quantified from shoot systems 30 days after inoculation by washing the tissue in water and blender centrifugal flotation. We observed the symptoms of amachamiento, leaf and vein deformation in the expanded trifoliate leaves, and also leaves with necrotic, brown to reddish and angular lesions, characteristics from false angular spot, and deformed stems characterized by enlargement of nodes, retortions, and necrotic lesions. High numbers of nematodes were found inside common bean plants. This is the first report of the pathogenicity and symptoms caused by A. besseyi in common bean in Brazil. These findings are important for development of management strategies to avoid losses on bean cropped in infested areas. |
| Databáze: | OpenAIRE |
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