Calonectria species isolated from Eucalyptus plantations and nurseries in South China

JieQiong Li, Michael J. Wingfield, Qianli Liu, Irene Barnes, Jolanda Roux, Lorenzo Lombard, Pedro W. Crous, ShuaiFei Chen

Research output: Contribution to journal/periodicalArticleScientificpeer-review

Abstract

Diseases caused by species of Calonectria (Ca.) represent a serious threat to the growth and sustainability of Eucalyptus 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 Calonectria species were collected in Eucalyptus plantations and nurseries in the FuJian, GuangDong, GuangXi, and YunNan Provinces of South China. Additional isolates were baited from soil samples in the Hong Kong Region. The aim of this study was to identify the 115 Calonectria isolates obtained using comparisons of DNA sequence data for the -tubulin (tub2), calmodulin (cmdA), histone H3 (his3) and partial translation elongation factor-1 (tef1) gene regions as well as their morphological features. Seven known species were identified, including Calonectria arbusta, Ca. asiatica, Ca. chinensis, Ca. eucalypti, Ca. hongkongensis, Ca. mossambicensis and Ca. pentaseptata. In addition, six novel taxa were collected and are described here as Ca. aciculata, Ca. honghensis, Ca. lantauensis, Ca. pseudoturangicola, Ca. pseudoyunnanensis, and Ca. yunnanensis spp. nov. Overall, the results reflect a high diversity of Calonectria species in China.
Original languageEnglish
Pages (from-to)259-294
Number of pages36
JournalIMA Fungus
Volume8
Issue number2
DOIs
Publication statusPublished - Dec 2017

Keywords

  • Cylindrocladium
  • forest pathogens
  • Nectriaceae
  • phylogeny
  • soil
  • systematics

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