A single ectomycorrhizal fungal species can enable a <i>Pinus</i> invasion

Hayward, J.; Horton, Thomas R.; Pauchard, Aníbal; Núñez, Martín A.

doi:10.1890/14-1100.1

Cited by 110 publications

(105 citation statements)

References 36 publications

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“…PSF can facilitate the spread of invasive plants if the invader disrupts positive PSF in the native community (Callaway et al, 2008) or if the invader experiences positive PSF itself (Zhang et al, 2010;Hayward et al, 2015). Our results indicate that positive PSF are likely stronger in T. ceratophorum than in T. officinale under current conditions.…”

Section: Shifts In Mycorrhizal Functioning With [Co 2 ]mentioning

confidence: 75%

Host plant physiology and mycorrhizal functioning shift across a glacial through future CO2 gradient

Becklin¹,

Mullinix²,

Ward³

2016

Plant Physiol.

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Section: Shifts In Mycorrhizal Functioning With [Co 2 ]mentioning

confidence: 75%

Host plant physiology and mycorrhizal functioning shift across a glacial through future CO2 gradient

Becklin¹,

Mullinix²,

Ward³

2016

Plant Physiol.

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“…In fact, recent research has revealed that both co-invasion of nonnative mutualist species and novel associations with native species determine invasion success (Pringle et al 2009, Dickie et al 2010, Nun˜ez and Dickie 2014, Wood et al 2015. For example, ectomycorrhizal pines appear to invade only when co-invading exotic or cosmopolitan fungi are available (Nun˜ez et al 2009, Dickie et al 2010, Hynson et al 2013, Hayward et al 2015, though introduced trees may form novel associations with native fungi as adults (Parlade´et al 1995, Jairus et al 2011, Trocha et al 2012, Bahram et al 2013. These studies also demonstrate that the importance of co-invasion in conferring invasion success is variable among studies or taxa, but the reasons for this are unresolved.…”

Section: Introductionmentioning

confidence: 99%

Mycorrhizal co‐invasion and novel interactions depend on neighborhood context

Moeller

Dickie

Peltzer

et al. 2015

Ecology

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Abstract. Biological invasions are a rapidly increasing driver of global change, yet fundamental gaps remain in our understanding of the factors determining the success or extent of invasions. For example, although most woody plant species depend on belowground mutualists such as mycorrhizal fungi and nitrogen-fixing bacteria, the relative importance of these mutualisms in conferring invasion success is unresolved. Here, we describe how neighborhood context (identity of nearby tree species) affects the formation of belowground ectomycorrhizal partnerships between fungi and seedlings of a widespread invasive tree species, Pseudotsuga menziesii (Douglas-fir), in New Zealand. We found that the formation of mycorrhizal partnerships, the composition of the fungal species involved in these partnerships, and the origin of the fungi (co-invading or native to New Zealand) all depend on neighborhood context. Our data suggest that nearby ectomycorrhizal host trees act as both a reservoir of fungal inoculum and a carbon source for late-successional and native fungi. By facilitating mycorrhization of P. menziesii seedlings, adult trees may alleviate mycorrhizal limitation at the P. menziesii invasion front. These results highlight the importance of studying biological invasions across multiple ecological settings to understand establishment success and invasion speed.

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“…It is now recognized that these introduced fungi are being spread well beyond their areas of initial introduction (Nuñez et al 2013, Wood et al 2015 and are facilitating the spread of invasive trees (Nuñez et al 2009, Dickie et al 2010. Sometimes, a single fungal species is enough to trigger the invasion of nonnative trees (Hayward et al 2015). Plant-fungal co-invasions (when both nonnative species invade together) are associated with major changes in soil nutrient cycling, particularly with the movement of soil nutrients from recalcitrant into more labile pools, facilitating subsequent invasion by other nonnative plants .…”

Section: Can Nonnative Mutualists Be a Problem?mentioning

confidence: 99%

What can possibly go wrong?: The risks of introducing soil microorganisms from Antarctica into South America

et al. 2015

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SUMMARYEndophytic fungi form mutualistic associations with plant roots which can increase plant survival and resistance to stress. Recently, it has been proposed that endophytic fungi from Antarctica should be used to facilitate reintroduction and establishment of native plants in xeric environments of northern Chile. In this note, we suggest this is a risky proposition and may lead to biological invasions. It is difficult to predict which endophytic fungi will become invasive, where they will invade, or what their impacts will be. Organisms that move across continents may or may not become invasive depending on the interaction between the species and the invaded community; unexpected outcomes may occur due to adaptation and novel interactions of the introduced species in the new environment. The fact that these endophytes are mutualistic does not imply that they will not have negative effects on the recipient community, since they might promote invasion of other non-native species or may change the competitive relationships among native species. Further, taxonomically uncharacterized fungal isolates from plant roots are likely to contain non-beneficial species. The fact that these endophytic fungi species are from Antarctica does not ensure that they cannot invade elsewhere. It should be recognized that invasive microorganisms are extremely difficult to control. We strongly suggest that the further translocation, use and spread of endophytes from Antarctica should be halted until a risk assessment is undertaken. Biosecurity measures must be taken when considering transcontinental experiments. Based on previous experiences, it is likely that the risk and potential costs of introducing these new species significantly exceed any potential benefits of their introductions.Key words: biological invasions, endophytes, fungi, pathogens, soil biota. RESUMENLos hongos endófitos forman asociaciones mutualísticas con raíces de plantas y pueden mejorar la sobrevivencia y resistencia al estrés. Recientemente se ha propuesto usar hongos endófitos de la Antártida para facilitar la reintroducción y establecimiento de plantas nativas en formaciones xerofíticas del norte de Chile. En esta nota se sugiere que aquello es una propuesta riesgosa y puede conducir a invasiones biológicas. Es difícil predecir qué especies se convertirán en invasoras, dónde lo harán o cuáles serán sus efectos. Los organismos transportados entre continentes pueden o no convertirse en invasores, según las interacciones entre especies y con la comunidad invadida, y pueden ocurrir resultados inesperados debido a adaptaciones de especies invasoras al nuevo ambiente y a novedosas interacciones con especies introducidas en el nuevo ambiente. Estos endófitos mutualistas pueden tener efectos negativos en la comunidad receptora, como promover invasiones de otras especies exóticas o cambiar relaciones de competencia entre especies nativas. Los hongos endófitos de la Antártida no garantizan que no puedan invadir otros lugares. La falta de identificación taxonómica d...

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A single ectomycorrhizal fungal species can enable a Pinus invasion

Cited by 110 publications

References 36 publications

Host plant physiology and mycorrhizal functioning shift across a glacial through future CO2 gradient

Host plant physiology and mycorrhizal functioning shift across a glacial through future CO2 gradient

Mycorrhizal co‐invasion and novel interactions depend on neighborhood context

What can possibly go wrong?: The risks of introducing soil microorganisms from Antarctica into South America

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