First report of Neofusicoccum parvum causing Juglans neotropica dieback in Costa Rica

被引：0
|
作者：
Solis, Maria Rodriguez [1 ]
Jimenez, Alexander Berrocal [1 ]
Alvarez, Dawa Mendez [1 ]
Barquero, Veronica Villalobos [1 ]
机构：
[1] Inst Tecnol Costa Rica, Sanidad Forestal, Cartago, Costa Rica
来源：
REVISTA FORESTAL MESOAMERICA KURU-RFMK | 2025年 / 22卷 / 50期
关键词：
Juglans; Neofusicoccum; tropical plant disease; walnut;
D O I：
10.18845/rfmk.v22i50.7761
中图分类号：
S7 [林业];
学科分类号：
0829 ; 0907 ;
摘要：
During the rainy season in the province of Cartago, Costa Rica, Juglans neotropica (walnut) trees showed symptoms of dieback. Isolations were made from the zone of symptom progression of these diseased trees on FDA plus antibiotic culture medium and the pathogen Neofusicoccum parvum was identified morphologically and molecularly (ITS4-ITS5 primers). The disease caused by this pathogen was confirmed by pathogenicity tests, where the plants inoculated with the fungus, reached lesions of up to 51.5 mm, unlike the control that presented 7.8 mm, showing a significant difference (alpha <= 0.05) and a normal distribution among the variables. This is the first report of N. parvum causing apical death on J. neotropica in Costa Rica.
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收藏
页码：29 / 32
页数：4
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