Cylindrocladium quinqueseptatum on Myrtaceous tree seedlings.

Pitkethley, R. N.

doi:10.1071/app9760057a

Cited by 10 publications

(6 citation statements)

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“…Calonectria microconidialis produces microconidiophores in culture, a characteristic shared with C. reteaudii and C. pseudoreteaudii , but distinguishing it from C. pentaseptata , C. queenslandica and C. terrae-reginae ( Lombard et al., 2010d , Crous et al., 2012 ). Species of the C. reteaudii complex are well-known causal agents of CLB in Australia, South America and Southeast Asia ( Pitkethley, 1976 , Bolland et al., 1985 , Sharma and Mohanan, 1991 , Sharma and Mohanan, 1992 , Kang et al., 2001a , Crous, 2002 , Rodas et al., 2005 , Lombard et al., 2010d ), but the pathogenicity of C. microconidialis and C. pentaseptata will need to be tested experimentally.…”

Section: Discussionmentioning

confidence: 99%

New species, hyper-diversity and potential importance of Calonectria spp. from Eucalyptus in South China

Lombard¹,

Chen²,

Mou³

et al. 2015

Studies in Mycology

120

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Plantation forestry is expanding rapidly in China to meet an increasing demand for wood and pulp products globally. Fungal pathogens including species of Calonectria represent a serious threat to the growth and sustainability of this industry. Surveys were conducted in the Guangdong, Guangxi and Hainan Provinces of South China, where Eucalyptus trees in plantations or cuttings in nurseries displayed symptoms of leaf blight. Isolations from symptomatic leaves and soils collected close to infected trees resulted in a large collection of Calonectria isolates. These isolates were identified using the Consolidated Species Concept, employing morphological characters and DNA sequence comparisons for the β-tubulin, calmodulin, histone H3 and translation elongation factor 1-alpha gene regions. Twenty-one Calonectria species were identified of which 18 represented novel taxa. Of these, 12 novel taxa belonged to Sphaero-Naviculate Group and the remaining six to the Prolate Group. Southeast Asia appears to represent a centre of biodiversity for the Sphaero-Naviculate Group and this fact could be one of the important constraints to Eucalyptus forestry in China. The remarkable diversity of Calonectria species in a relatively small area of China and associated with a single tree species is surprising.

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Section: Discussionmentioning

confidence: 99%

New species, hyper-diversity and potential importance of Calonectria spp. from Eucalyptus in South China

Lombard¹,

Chen²,

Mou³

et al. 2015

Studies in Mycology

120

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“…reteaudii complex are important pathogens of Eucalyptus spp. causing Cylindrocladium leaf blight and cutting rot in Australia, South East Asia and South America ( Pikethley 1976 , Bolland et al 1985 , Sharma & Mohanan 1991 , 1992 , Booth et al 2000 , Crous & Kang 2001 , Crous 2002 , Rodas et al 2005 ) and their refined taxonomy presented here will contribute to efforts to manage diseases caused by them.…”

Section: Discussionmentioning

confidence: 99%

<I>Calonectria</I> species associated with cutting rot of <I>Eucalyptus</I>

Lombard

Zhou²,

Crous³

et al. 2010

Pers - Int Mycol J

127

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Decline in the productivity of Eucalyptus hybrid cutting production in the Guangdong Province of China is linked to cutting rot associated with several Calonectria spp. The aim of this study was to identify these fungi using morphological and DNA sequence comparisons. Two previously undescribed Calonectria spp., Ca. pseudoreteaudii sp. nov. and Ca. cerciana sp. nov. were identified together with Ca. pauciramosa. Calonectria pseudoreteaudii resides in the Ca. reteaudii complex and Ca. cerciana is closely related to Ca. morganii. Connected to the discovery of Ca. pseudoreteaudii, species in the Ca. reteaudii complex were re-considered and the group is shown to accommodate two cryptic species. These originate from Australia and are described as Ca. queenslandica sp. nov. and Ca. terrae-reginae sp. nov.

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“…Cylindrocladium leaf blight (CLB) of Eucalyptus, caused by Cylindrocladium quinqueseptatum Boedijn & Reitsma, is one of the most serious leaf diseases of plantation and nursery eucalypts in India (Sharma and Mohanan 1991b) and Vietnam (Booth et al 2000) and has also been regarded as important on this host in Brazil (Ferreira 1989), northern Australia (Pitkethley 1976;Bolland et al 1985), Madagascar (Crous and Swart 1995), Indonesia, Malaysia, and Mauritius (Peerally 1974). This disease has become so significant in parts of central and southeastern Vietnam that selection for resistant provenances, families, and clones of Eucalyptus camaldulensis Dehnh.…”

Section: Introductionmentioning

confidence: 99%

Non-conspecificity ofCylindrocladium quinqueseptatumandCalonectria quinqueseptatabased on a β-tubulin gene phylogeny and morphology

Kang¹,

Crous²,

Old³

et al. 2001

Can. J. Bot.

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Cylindrocladium quinqueseptatum Boedijn & Reitsma was originally described from leaf spots of Hibiscus sabdariffa L. from Indonesia. This fungus infects many host plants in Southeast Asia and causes severe leaf blight disease of eucalypts. Calonectria quinqueseptata Figueiredo & Namek., which was described from leaf spots on Annona squamosa L. from Brazil, has been regarded as the teleomorph of Cy. quinqueseptatum. Based on morphology and on the phylogeny derived from the DNA sequence of a β-tubulin gene portion spanning several phylogenetically informative introns, the two respective ex-type cultures are shown to be distinct species. Furthermore, Calonectria reteaudii (Bugn.) C. Booth (anamorph Cy. reteaudii (Bugn.) Boesew.), which was described on Smithia bequaertii De Wild. from Vietnam, is shown to be morphologically identical to a comprehensive selection of isolates of Cy. quinqueseptatum from Southeast Asia, Australia, and Madagascar. As Cy. reteaudii represents an older name for Cy. quinqueseptatum, we suggest that the fungus causing widespread damage on eucalypts and other hosts in the above regions be referred to as Cy. reteaudii. Calonectria quinqueseptata should be retained for the fungus that thus far has been found only in Brazil.Key words: Cylindrocladium reteaudii, Eucalyptus, Hypocreales, phylogeny, systematics.

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Cylindrocladium quinqueseptatum on Myrtaceous tree seedlings.

Cited by 10 publications

References 1 publication

New species, hyper-diversity and potential importance of Calonectria spp. from Eucalyptus in South China

New species, hyper-diversity and potential importance of Calonectria spp. from Eucalyptus in South China

<I>Calonectria</I> species associated with cutting rot of <I>Eucalyptus</I>

Non-conspecificity ofCylindrocladium quinqueseptatumandCalonectria quinqueseptatabased on a β-tubulin gene phylogeny and morphology

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