Diversity of Calonectria species from leaves and soils in diseased southern China Eucalyptus plantation.

Calonectria leaf blight (CLB) is one of the best-known diseases of Eucalyptus spp., particularly in Asia and South America. Recently, typical symptoms of leaf and shoot blight caused by Calonectria spp.

Phylogeny and Pathogenicity of Celoporthe Species from Plantation Eucalyptus in Southern China.

The family of Cryphonectriaceae (Diaporthales) includes many important tree pathogens, such as those that cause severe cankers on Eucalyptus trees. Recently, stem canker and cracked bark were observed on 8-year-old Eucalyptus grandis × E. urophylla trees in a plantation in southern China.

species isolated from plantations and nurseries in South China.

Diseases caused by species of () represent a serious threat to the growth and sustainability of plantations in China. Symptoms caused by these fungi mainly include leaf blight on trees in plantations and rotting of stems and leaves in nurseries. Extensive surveys have recently been conducted where species were collected in plantations and nurseries in the FuJian, GuangDong, GuangXi, and YunNan Provinces of South China.

Risk analysis and outcomes of bronchopulmonary sequestrations.

Background: Researched and discussed the risks and outcomes of bronchopulmonary sequestrations, especially the intralobar type.

Methods: A retrospective review of our experiences with bronchopulmonary sequestrations from January 2012 to April 2015 is reported. The present study researched and discusses the risks and outcomes of bronchopulmonary sequestrations, especially the intralobar type, compared with other types of bronchopulmonary sequestrations in symptoms, surgery, pathology, and excretion.

[Soil microbial community structure in Picea asperata plantations with different ages in subalpine of western Sichuan, Southwest China.].

The effects of four Picea asperata plantations with different ages (50-, 38-, 27- and 20-year-old), in subalpine of western Sichuan, on the characteristics of soil microbial diversity and microbial community structure were studied by the method of phospholipid fatty acid (PLFA) profiles. The results showed that, with the increase of age, the contents of soil organic carbon and total nitrogen gradually improved, while Shannon's diversity index and Pielou's evenness index of soil microorganisms increased at first and then decreased. The amounts of microbial total PLFAs, bacterial PLFAs, fungal PLFAs, actinobacterial PLFAs, and arbuscular mycorrhizal fungal (AMF) PLFAs in soils consistently increased with increasing age.

[Dynamics of carbon and nitrogen storage of Cupressus chengiana plantations in the arid valley of Minjiang River, Southwest China].

The carbon and nitrogen storage and distribution patterns of Cupressus chengiana plantation ecosystems with different stand ages in the arid valley of Minjiang River were studied. The results showed that carbon contents in different organs of C. chengiana were relatively stable, while nitrogen contents were closely related to different organs, and soil organic carbon and nitrogen contents increased with the stand age.