Persoonia (2011) 26, 1-12

S.F. Chen, L. Lombard, J. Roux, Y.J. Xie, M.J. Wingfield and X.D. Zhou (2011)
Novel species of Calonectria associated with Eucalyptus leaf blight in Southeast China
Persoonia 26, 1-12
Abstract: Leaf blight caused by Calonectria spp. is an important disease occurring on Eucalyptus trees grown in plantations of Southeast Asia. Symptoms of leaf blight caused by Calonectria spp. have recently been observed in commercial Eucalyptus plantations in FuJian Province in Southeast China. The aim of this study was to identify these Calonectria spp. employing morphological characteristics, DNA sequence comparisons for the β-tubulin, histone H3 and translation elongation factor-1α gene regions and sexual compatibility. Four Calonectria spp. were identified, including Ca. pauciramosa and three novel taxa described here as Ca. crousiana, Ca. fujianensis and Ca. pseudocolhounii. Inoculation tests showed that all four Calonectria spp. found in this study were pathogenic on two different E. urophylla × E. grandis hybrid clones, commercially utilised in eucalypt plantations in China.
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Full text of article
Database assignments for author(s): Xudong Zhou, Shuai Fei Chen, Lorenzo Lombard, Jolanda Roux, Michael J. Wingfield

Research topic(s) for pests/diseases/weeds:
identification/taxonomy

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Calonectria pauciramosa	Eucalypt (Eucalyptus)	China (south)
	Calonectria crousiana	Eucalypt (Eucalyptus)	China (south)
	Calonectria eucalypti	Eucalypt (Eucalyptus)	China (south)
	Calonectria fujianensis	Eucalypt (Eucalyptus)	China (south)