First Report of Phytophthora heveae and Pythium spp. on Tropical Tree Seedlings in Panama
نویسندگان
چکیده
منابع مشابه
Survival and ecophysiology of tree seedlings during El Niño drought in a tropical moist forest in Panama
In tropical forests, severe droughts caused by El Niño events may strongly influence the water relations of tree seedlings and thereby increase their mortality. Data on known-aged seedlings of three common shade-tolerant canopy tree species (Trichilia tuberculata, Tetragastris panamensis and Quararibea asterolepis) in a Panamanian moist forest are presented. Seedling survival during a severe El...
متن کاملHost Specificity of Pathogenic Pythium Species: Implications for Tree Species Diversity
In the Janzen—Connell hypothesis, host-specific natural enemies enhance species diversity and influence the structure of plant communities. This study tests the explicit assumption of host specificity for soil pathogens of the genus Pythium that cause damping-off disease of germinating seeds and seedlings. We isolated Pythium spp. from soil of a tropical forest in Panama. Then, in an inoculatio...
متن کاملChemical stimulation of sexual reproduction in Phytophthora and Pythium
The genera of Phytophthora and Pythium are two of the very destructive groups of plant pathogens in the world (Plaats-Niterink, 1981; Erwin and Ribeiro, 1996). They attack mainly mature plants and young seedlings, respectively, of forest, fruit, vegetable, flower, and ornamental species. These two groups of fungi are classified in the family Pythiaceae of the Oomycetes, which is excluded from t...
متن کاملEffect of tree host species on fungal community composition in a tropical rain forest in Panama
To determine whether host species influence the composition of fungal communities, the ascomycetes and basidiomycetes present on three tree species (Prioria copaifera (Fabaceae), Quararibea asterolepis (Bombacaceae), and Trichilia tuberculata (Meliaceae)) were sampled on the 50-ha Forest Dynamics Project plot in lowland moist tropical forest on Barro Colorado Island, Panama. The most abundant f...
متن کاملThe Taxonomy and Biology of Phytophthora and Pythium
Members of the genera Phytophthora de Bary and Pythium Pringsheim are economically important “fungal-like-organisms” or “pseudofungi” which have been widely studied throughout the world but their taxonomic treatment has been highly controversial. The production of globose oogonia in the sexual reproduction has placed them in the phylum Oomycota. Although members of Oomycota are similar to all f...
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ژورنال
عنوان ژورنال: Plant Disease
سال: 2000
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pdis.2000.84.6.706c