A new species of Phellinus sensu stricto associated with esca on grapevine in South Africa

Cloete, M.; Fischer, Michael GND; Du Plessis, I.L.; Mostert, L.; Halleen, F.

A new species of Phellinus sensu stricto was isolated from diseased Vitis vinifera in the Northern Cape and Limpopo provinces of South Africa. Phellinus resupinatus is described here based on fruit body morphology, internal transcribed spacer (ITS) and large subunit (LSU) phylogenies. Phellinus resupinatus forms a well-supported clade closely related to Phellinus bicuspidatus, a species associated with white rot in oak trees in the United States. Morphologically, P. resupinatus is characterised by its resupinate fruit body shape, straight, ventricose hymenial setae and broadly ellipsoid hyaline basidiospores. It has been isolated from esca-diseased grapevines in the summer rainfall regions of South Africa and is found on the uppermost trunks of declining vines showing symptoms of white rot.

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Cloete, M. / Fischer, Michael / Du Plessis, I.L. / et al: A new species of Phellinus sensu stricto associated with esca on grapevine in South Africa. 2016.

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