Soybean green stem and foliar retention syndrome caused by Aphelenchoides besseyi
| Autor: | D. Klepker, Maurício Conrado Meyer, Francismar Corrêa Marcelino-Guimarães, L. Favoreto |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Fusarium biology Inoculation fungi food and beverages Tropics Fungus biology.organism_classification 01 natural sciences 03 medical and health sciences 030104 developmental biology Nematode Aphelenchoides Aphelenchoides besseyi Crop production Botany 010606 plant biology & botany |
| Zdroj: | Tropical Plant Pathology. 42:403-409 |
| ISSN: | 1983-2052 |
| Popis: | Soybean, the most important agricultural product in Brazil, is widely cultivated all over the country. The occurrence of green stem and foliar retention (GSFR) has been reported since the beginning of the soybean cultivation in Brazil and its potential causes were attributed to severe attack of stinkbugs or plant nutritional disorders. About two decades ago, a new type of GSFR was reported in Brazilian tropical regions of soybean production, also of an unknown cause. Several possible causes were investigated, but the presence of the nematode Aphelenchoides sp. in symptomatic plants was frequently observed. Koch’s postulates were conducted to check whether this nematode could be the cause of the syndrome. Specimens of Aphelenchoides sp. were isolated from soybean plants and multiplied in colonies of the fungus Fusarium sp. in PDA culture medium. Nematode suspensions were inoculated onto healthy soybean plants and the typical GSFR symptoms were observed. The nematode was recovered from the inoculated plants. Based on both morphological and molecular data, we suggest that Aphelenchoides besseyi is the causal agent of GSFR of soybeans in Brazil, a syndrome popularly known as “Soja Louca II”. |
| Databáze: | OpenAIRE |
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