Tree invasions and biosecurity: eco-evolutionary dynamics of hitchhiking fungi

Burgess, Treena I.; Crous, Casparus J.; Slippers, Bernard; Hantula, Jarkko; Wingfield, Michael J.

doi:10.1093/aobpla/plw076

Cited by 35 publications

(30 citation statements)

References 92 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Botryosphaeriaceae, including L. theobromae, are common endophytes in such plants and plant products, including fruits [4,64]. Endophytic infections by these fungi are typically invisible and are thus not detected by quarantine systems [3,19,65]. The present study highlights how widely species of the Botryosphaeriaceae, specifically L. theobromae, can be spread as a consequence of such human-assisted movement.…”

Section: Discussionmentioning

confidence: 84%

“…The lack of population structure and dominance of identical multilocus haplotypes on distant continents can only be explained by assisted dispersal. In this case, human-mediated movement of plant material [1,3,63] has most likely facilitated this global dispersal.…”

Section: Discussionmentioning

confidence: 99%

“…The rise in the number of invasive pathogens and pests is thought to be driven primarily by increasing international movement and trade in plants and plant products [2,3]. This problem might be even more severe than previously realized, because quarantine mechanisms designed to reduce such movement are oblivious of the multitude of cryptic and endophytic microbes that occur asymptomatically within plants [3,4]. A prominent group of fungi that reflect this threat is the Botryosphaeriaceae.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Invasive Everywhere? Phylogeographic Analysis of the Globally Distributed Tree Pathogen Lasiodiplodia theobromae

Mehl

Wingfield

Roux

et al. 2017

Forests

Self Cite

View full text Add to dashboard Cite

Fungi in the Botryosphaeriaceae are important plant pathogens that persist endophytically in infected plant hosts. Lasiodiplodia theobromae is a prominent species in this family that infects numerous plants in tropical and subtropical areas. We characterized a collection of 255 isolates of L. theobromae from 52 plants and from many parts of the world to determine the global genetic structure and a possible origin of the fungus using sequence data from four nuclear loci. One to two dominant haplotypes emerged across all loci, none of which could be associated with geography or host; and no other population structure or subdivision was observed. The data also did not reveal a clear region of origin of the fungus. This global collection of L. theobromae thus appears to constitute a highly connected population. The most likely explanation for this is the human-mediated movement of plant material infected by this fungus over a long period of time. These data, together with related studies on other Botryosphaeriaceae, highlight the inability of quarantine systems to reduce the spread of pathogens with a prolonged latent phase.

show abstract

Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Invasive Everywhere? Phylogeographic Analysis of the Globally Distributed Tree Pathogen Lasiodiplodia theobromae

Mehl

Wingfield

Roux

et al. 2017

Forests

Self Cite

View full text Add to dashboard Cite

show abstract

“…A probable explanation for the genetic similarity among the studied populations would be the movement of infected plant material (Begoude et al ., ). Lasiodiplodia theobromae is recognized as a latent pathogen that could be dispersed when seeds or symptomless plant material are moved between different regions (Mohali et al ., ; Burgess et al ., ). In a recent study, Mehl et al .…”

Section: Discussionmentioning

confidence: 97%

Genetic diversity and population structure of Lasiodiplodia theobromae from different hosts in northeastern Brazil and Mexico

et al. 2019

View full text Add to dashboard Cite

Lasiodiplodia theobromae is one of the most frequent fungal pathogens associated with dieback, gummosis, leaf spot, stem‐end rot and fruit rot symptoms in cashew, mango, papaya and grapevine. In this study, the variation in the genetic diversity of 117 L. theobromae isolates from northeastern Brazil (n = 100) and Mexico (n = 17), which were collected from these four crops, was analysed using microsatellite markers. The results revealed low genetic diversity among L. theobromae populations and the existence of two genetic groups. All Mexican isolates were grouped with Brazilian isolates, suggesting a low level of differentiation between these populations. Furthermore, no evident host or climate‐based population differentiation was observed for L. theobromae in Brazil. The populations studied were mostly clonal, but additional studies are needed to better understand the mode of reproduction of the pathogen. The low genetic diversity of L. theobromae populations in northeastern Brazil suggests that resistant cultivars could be used as a durable management strategy to reduce the impact of the diseases caused by this pathogen.

show abstract

“…The Panel also notes that, as the pathogen, similar to other Botryosphaeriaceae species (Burgess et al, 2016;Slippers et al, 2017), exists as endophyte in healthy plant tissues of its hosts for extended period of time, it could potentially spread freely in healthy plant material, including fruit. oppen-Geiger climate type map of Europe, Africa, Asia and Oceania (Peel et al, 2007).…”

Section: Entrymentioning

confidence: 99%

Pest categorisation of Botryosphaeria kuwatsukai

Jeger¹,

Bragard²,

Caffier³

et al. 2017

EFS2

View full text Add to dashboard Cite

The Panel on Plant Health performed a pest categorisation of Botryosphaeria kuwatsukai, the causal agent of fruit rot and wart bark on apple and pear, for the EU. The pathogen, which was recently characterised, is a well-defined fungal species affecting mainly Pyrus pyrifolia (Japanese pear), although Pyrus communis (European pear) and apples (Malus domestica) can also be affected. The host status of other plant species reported in the literature, i.e. Cydonia oblonga, Chaenomeles japonica, Malus micromalus, Vitis vinifera and Prunus spp., is unclear. B. kuwatsukai is currently present in Japan, China, Korea, Taiwan and the USA, and uncertainty exists about its presence in other areas, where the disease has been associated with other Botryosphaeria spp. The pathogen is not known to occur in the EU and is listed in Annex IIAI of Directive 2000/29/EC. It could potentially enter the EU on host plants for planting and fruit originated in infested countries. Climatic conditions in the EU are suitable for the establishment and spread of the pathogen, as its epidemiology is similar to that of other Botryosphaeria spp. present in the EU. Pears and apples are widely distributed in the EU. In the infested areas, B. kuwatsukai causes branch dieback and fruit rot resulting in yield/quality losses. Its introduction and spread in the EU could impact pear and apple production, although the magnitude is unknown. Cultural practices and chemical measures may reduce the inoculum sources but cannot eliminate the pathogen. Phytosanitary measures are available to mitigate the risk of introduction and spread of the pathogen in the EU. B. kuwatsukai meets all criteria assessed by EFSA for consideration as a potential Union quarantine pest. As B. kuwatsukai is not known to occur in the EU, this criterion to consider it as a Union regulated non-quarantine pest is not met.

show abstract

Tree invasions and biosecurity: eco-evolutionary dynamics of hitchhiking fungi

Cited by 35 publications

References 92 publications

Invasive Everywhere? Phylogeographic Analysis of the Globally Distributed Tree Pathogen Lasiodiplodia theobromae

Invasive Everywhere? Phylogeographic Analysis of the Globally Distributed Tree Pathogen Lasiodiplodia theobromae

Genetic diversity and population structure of Lasiodiplodia theobromae from different hosts in northeastern Brazil and Mexico

Pest categorisation of Botryosphaeria kuwatsukai

Contact Info

Product

Resources

About