Neofusicoccum parvum causing canker of seedlings of Juglans regia in China

Yu, Zhiqiang; Guo-Ning, Tang; Peng, Shaobin; Chen, Hui; Zhai, Ming

doi:10.1007/s11676-015-0130-0

Cited by 19 publications

(12 citation statements)

References 21 publications

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“…In China, species of Botryosphaeriaceae also have been isolated from a number of other woody and horticultural plants, including Acacia confusa ( Zhao et al 2010 ), Actinidia chinensis ( Zhou et al 2015 ), Bougainvillea spectabilis , Polyscias balfouriana ( Li et al 2015a ), Juglans regia ( Li et al 2015b , Yu et al 2015 ), Malus domestica ( Tang et al 2012 , Xu et al 2015a ), Rosa rugosa ( Chen et al 2016 ), Vitis vinifera ( Yan et al 2012 , 2013 ) and Vaccinium corymbosum ( Xu et al 2015b ). Botryosphaeriaceae species identified from these plants resided in Botryosphaeria , Lasiodiplodia and Neofusicoccum .…”

Section: Introductionmentioning

confidence: 99%

Botryosphaeriaceae from Eucalyptus plantations and adjacent plants in China

Liu

et al. 2018

persoonia

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The Botryosphaeriaceae is a species-rich family that includes pathogens of a wide variety of plants, including species of Eucalyptus. Recently, during disease surveys in China, diseased samples associated with species of Botryosphaeriaceae were collected from plantation Eucalyptus and other plants, including Cunninghamina lanceolata, Dimocarpus longan, Melastoma sanguineum and Phoenix hanceana, which were growing adjacent to Eucalyptus. In addition, few samples from Araucaria cunninghamii and Cedrus deodara in two gardens were also included in this study. Disease symptoms observed mainly included stem canker, shoot and twig blight. In this study, 105 isolates of Botryosphaeriaceae were collected from six provinces, of which 81 isolates were from Eucalyptus trees. These isolates were identified based on comparisons of the DNA sequences of the internal transcribed spacer regions and intervening 5.8S nrRNA gene (ITS), and partial translation elongation factor 1-alpha (tef1), β-tubulin (tub), DNA-directed RNA polymerase II subunit (rpb2) and calmodulin (cmdA) genes, the nuclear ribosomal large subunit (LSU) and the nuclear ribosomal small subunit (SSU), and combined with their morphological characteristics. Results showed that these isolates represent 12 species of Botryosphaeriaceae, including Botryosphaeria fusispora, Cophinforma atrovirens, Lasiodiplodia brasiliense, L. pseudotheobromae, L. theobromae and Neofusicoccum parvum, and six previously undescribed species of Botryosphaeria and Neofusicoccum, namely B. pseudoramosa sp. nov., B. qingyuanensis sp. nov., B. wangensis sp. nov., N. hongkongense sp. nov., N. microconidium sp. nov. and N. sinoeucalypti sp. nov. Aside from B. wangensis, C. atrovirens and N. hongkongense, the other nine Botryosphaeriaceae species were isolated from Eucalyptus trees in South China. Botryosphaeria fusispora (26 % of the isolates from Eucalyptus) is the dominant species, followed by L. pseudotheobromae (23 % of the isolates from Eucalyptus). In addition to species found on Eucalyptus trees, we also found B. pseudoramosa on M. sanguineum; B. wangensis on C. deodara; C. atrovirens on D. longan; L. theobromae on C. lanceolata, D. longan and P. hanceana; and N. hongkongense on A. cunninghamii. Pathogenicity tests showed that the 12 species of Botryosphaeriaceae are pathogenic to three Eucalyptus clones and that Lasiodiplodia species are the most aggressive. The results of our study suggest that many more species of the Botryosphaeriaceae remain to be discovered in China. This study also provides confirmation for the wide host range of Botryosphaeriaceae species on different plants.

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Section: Introductionmentioning

confidence: 99%

Botryosphaeriaceae from Eucalyptus plantations and adjacent plants in China

Liu

et al. 2018

persoonia

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“…In China, N. parvum has also been reported from a wide range of hosts including Cupressus funebris (Li et al 2010 ), Eriobotrya japonica (Zhai and Zhang 2019 ), Eucalyptus spp. (Chen et al 2011 ), Koelreuteria paniculata (Fang et al 2019 ), Hevea brasiliensis (Liu et al 2017 ) and Juglans regia (Yu et al 2015 ) and in these cases, from sub-tropical and tropical zones. Neofusicoccum kwambonambiense was first reported from Syzygium cordatum (Myrtaceae) in South Africa (Pavlic et al 2009a ).…”

Section: Discussionmentioning

confidence: 99%

Variation in Botryosphaeriaceae from Eucalyptus plantations in YunNan Province in southwestern China across a climatic gradient

Slippers

Wingfield

et al. 2020

IMA Fungus

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The Botryosphaeriaceae accommodates many important pathogens of woody plants, including Eucalyptus. Recently, Botryosphaeriaceae were isolated from diseased plant parts from surveys of Eucalyptus plantations in the YunNan Province, China. The aims of this study were to identify these Botryosphaeriaceae isolates and to evaluate their pathogenicity to Eucalyptus. A total of 166 isolates of Botryosphaeriaceae were obtained from six regions in the YunNan Province, of which 76 were from Eucalyptus urophylla × E. grandis hybrids, 49 from E. globulus trees, and 41 isolates were from other unknown Eucalyptus species or hybrids. Isolates were identified by comparing DNA sequences of the internal transcribed spacer ribosomal RNA locus (ITS), partial translation elongation factor 1-alpha (tef1), β-tubulin 2 (tub2) and DNA-directed RNA polymerase II subunit (rpb2) genes, and combined with their morphological characteristics. Eleven species were identified, including Botryosphaeria fusispora, B. wangensis, Lasiodiplodia pseudotheobromae, Neofusicoccum kwambonambiense, N. parvum, and six novel species described as B. puerensis, N. dianense, N. magniconidium, N. ningerense, N. parviconidium and N. yunnanense. The dominant species across the regions were N. yunnanense, N. parvum and B. wangensis, representing 31.3, 25.3 and 19.9% of the total isolates, respectively. Species diversity and composition changed across the different climatic zones, despite their relatively close geographic proximity and the fact that some of the species have a global distribution. All the Botryosphaeriaceae species were pathogenic to one-year-old plants of an E. urophylla × E. grandis clone and E. globulus seed-derived plants, but showed significant inter- and intra-species variation in aggressiveness amongst isolates. The study provides a foundation for monitoring and management of Botryosphaeriaceae through selection and breeding of Eucalyptus in the YunNan Province of southwestern China.

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“…All these three species were tested on seedlings as well as on green fruits, demonstrating their pathogenic ability, although, based on the lesion lengths caused, they appeared to be of differing virulence. Neofusicoccum parvum was previously reported associated with walnut dieback in Spain, California, China and Korea (Chen, Morgan, Hasey et al, 2014;Chen et al, 2019;Cheon et al, 2013;Inderbitzin et al, 2010;López-Moral et al, 2019;Yu et al, 2015). In (Frisullo et al, 1994), but no molecular support was provided to present greater information within a group of taxonomically closely related species which are difficult to differentiate.…”

Section: Discussionmentioning

confidence: 99%

“…on stem and branch canker, dieback, kernel decay, canker on seedlings and fruit rot showed the presence of B. dothidea, Lasiodiplodia pseudotheobromae and N. parvum (Chen et al, 2019;Cheon et al, 2013;Li et al, 2016;Yu et al, 2015). Recently, also on the European Continent, in Spain and in the Czech Republic, symptoms of cankers, branch dieback and shoot blight were associated with several fungal species including B.…”

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confidence: 98%

Botryosphaeriaceae species causing canker and dieback of English walnut (Juglans regia) in Italy

et al. 2020

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English walnut (Juglans regia) is an important nut crop worldwide and is currently considered emerging in Italy. Botryosphaeriaceae fungi cause symptoms including cankers, discoloration and dieback, and several species are reported across the world on walnut. In this study, symptomatic trees from an orchard in Southern Italy showing branch dieback, cankers, wood discoloration and gummosis were surveyed. Three different fungi from the Botryosphaeriaceae were consistently isolated from symptomatic tissues. Representative isolates were characterized using morphological and molecular approaches based on conidial morphology, optimum growth temperature and the comparison of DNA sequence data from the ITS, tef1‐α and tub2 loci. Three species were identified: Botryosphaeria dothidea, Neofusicoccum mediterraneum and Neofusicoccum parvum. Pathogenicity tests on detached fruits and potted plants showed that all three species were pathogenic. To our knowledge, this is the first report of these Botryosphaeriaceae species causing canker and dieback on English walnut in Italy.

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Neofusicoccum parvum causing canker of seedlings of Juglans regia in China

Cited by 19 publications

References 21 publications

Botryosphaeriaceae from Eucalyptus plantations and adjacent plants in China

Botryosphaeriaceae from Eucalyptus plantations and adjacent plants in China

Variation in Botryosphaeriaceae from Eucalyptus plantations in YunNan Province in southwestern China across a climatic gradient

Botryosphaeriaceae species causing canker and dieback of English walnut (Juglans regia) in Italy

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