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In an investigation of Pythium species in China, two new species, P. agreste and P. wuhanense, were identified based on morphological characteristics and DNA sequence data. Pythium agreste has slightly inflated sporangia, oogonia encompassed by antheridia and antheridial stalks forming a very complicated knot, and plerotic oospores. It differs from the(More)
BACKGROUND Drought is a common stress limiting crops growth and productivities worldwide. Water deficit may increase cellular membrane permeability, resulting in K outflow. Internal K starvation may disorder plant metabolism and limit plant growth. However, it is seldom reported about the effects of external K on drought tolerance of contrasting wheat(More)
Three Pestalotiopsis isolates were obtained from leaves of Coffea arabica and Rhodomyrtus tomentosa. Among them, two isolates produced versicolorous conidia, and the other produced concolorous conidia. Phylogenetic analysis based on a combination of ITS, β-tubulin and tef1 gene sequence data clearly confirms that they belong to two species and distinguishes(More)
In an investigation of Pythium species in lawn grassland of south China, two new species, Pythium breve and P. baisense, were identified based on morphological characteristics and DNA sequence data. These two new species differ morphologically from the other Pythium species by the oogonia encompassed by many antheridia and with 1–3 antheridia on the wavy(More)
Bayberry (Myrica rubra) is a fruit tree native to the subtropical regions of China. It produces fruit with a unique taste and pharmacological characteristics, thus making it a widely cultivated tree commercially in many regions of China, including Zhejiang, Fujian, Guizhou, Sichuan and Yunnan Provinces. Recently, a twig blight disease occurred on the fruit(More)
Pestalotiopsis is a common and important plant-associated pathogen and endophyte with wide geographical and host distribution. In an investigation of endophytic Pestalotiopsis species associated with Podocarpaceae in China, a new species Pestalotiopsis yunnanensis was isolated from Podocarpus macrophyllus in Kunming, southwestern China. This new species(More)
Hemiberlesia pitysophila Takagi is an extremely harmful exotic insect in forest to Pinus species, including Pinus massoniana. Using both morphological taxonomy and molecular phylogenetics, we identified 15 strains of entomogenous fungi, which belong to 9 genera with high diversities. Surprisingly, we found that five strains that were classified as species(More)
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