The threat of myrtle rust to M257;ori taonga plant species in New Zealand

Teulon, D.A.J.; Alipia, T.T.; Ropata, H.T.; Green, J.M.; Rollinson, S.L.H. Viljanen; Cromey, M. G.; Arthur, Karen E.; MacDiarmid, Robin M.; Waipara, Nick; Marsh, A.T.

doi:10.30843/nzpp.2015.68.5869

Cited by 22 publications

(16 citation statements)

References 19 publications

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“…Specifically, risk assessments for new plant introductions should consider taxonomic similarity to the native flora as an indication of the risk of pathogen transmission (Gilbert et al ., ), similar to the taxonomically stratified host assessment strategy (Wapshere, ; Barton, ) used to evaluate potential biological control agents (Table ). Myrtle rust ( Puccinia psidii Winter), for example, is able to infect native and alien plant species in the Myrtaceae (Morin et al ., ; Teulon et al ., ), including economically, ecologically and culturally important species (e.g. Leptospermum scoparium J.R.Forst.…”

Section: Discussionmentioning

confidence: 99%

Taxonomic similarity, more than contact opportunity, explains novel plant–pathogen associations between native and alien taxa

et al. 2016

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Novel associations between plants and pathogens can have serious impacts on managed and natural ecosystems world-wide. The introduction of alien plants increases the potential for biogeographically novel plant-pathogen associations to arise when pathogens are transmitted from native to alien plant species and vice versa. We quantified biogeographically novel associations recorded in New Zealand over the last 150 yr between plant pathogens (fungi, oomycetes and plasmodiophorids) and vascular plants. We examined the extent to which taxonomic similarity, pathogen traits, contact opportunity and sampling effort could explain the number of novel associates for host and pathogen species. Novel associations were common; approximately one-third of surveyed plants and pathogens were recorded with at least one biogeographically novel associate. Native plants had more alien pathogens than vice versa. Taxonomic similarity between the native and alien flora and the total number of recorded associations (a measure of sampling effort) best explained the number of novel associates among species. The frequency of novel associations and the importance of sampling effort as an explanatory variable emphasize the need for effective monitoring and risk assessment tools to mitigate the potential environmental and economic impact of novel pathogen associations.

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Section: Discussionmentioning

confidence: 99%

Taxonomic similarity, more than contact opportunity, explains novel plant–pathogen associations between native and alien taxa

et al. 2016

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“…The incorporation of traditional ecological knowledge has enriched the quality and diversity of contemporary science, and has also included and upskilled those who have an interest and enduring relationship with forests but may not have previously had the opportunity or resources for involvement. Whilst the above highlights some positive examples of how indigenous Māori knowledge and participation can strengthen and extend forest biosecurity practices, the authors acknowledge Māori still struggle to be involved in forest biosecurity from the outset, to get their management strategies recognised and implemented, and to obtain adequate resources to do so (Teulon et al, 2015;Lambert et al, 2018;Lambert and Mark-Shadbolt, 2021).…”

Section: Māori Groups Have Been Involved In Issues Surroundingmentioning

confidence: 99%

Elevating and Recognising Knowledge of Indigenous Peoples to Improve Forest Biosecurity

Kuru

Marsh

Ganley

2021

Front. For. Glob. Change

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Current forest biosecurity systems and processes employed in many countries are, in large, constructs of Western principles, values and science knowledge that have been introduced and integrated internationally. They are often devoid of knowledge, and of the values and principles, held by indigenous people, even those who have an intimate and enduring relationship with their forests. Indigenous people are also often overlooked in policy and decision-making processes, yet are often most affected by biosecurity pests and pathogens that impact native plant species that they may rely on for sustenance, cultural or spiritual purposes. By adopting an inclusive approach, scientists and indigenous people can achieve more comprehensive and robust biosecurity outcomes through a shared diversity of knowledge and at the same time serves to elevate and recognise the importance of indigenous knowledge. A co-innovation approach can also result in more widespread adoption of tools or practices by end-users including indigenous people. Understanding New Zealand Māori and their unique knowledge base can help improve forest biosecurity systems and practices, as can discussions of barriers that can and have prevented adoption of inclusiveness. Here we outline key principles behind indigenous engagement, specifically the need to develop enduring relationships.

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“…There is considerable concern about the long-term impact of myrtle rust in New Zealand, particularly on native species. New Zealand has at least 27 indigenous Myrtaceae taxa (de Lange et al 2018) that have a significant value in Māori culture (Teulon et al 2015), New Zealand's economy (Essien et al 2019), and ecosystems. Assessing the impacts of myrtle rust on susceptible hosts and monitoring disease progress over time under natural conditions will provide crucial information for management strategies against this disease.…”

Section: Introductionmentioning

confidence: 99%

Monitoring Austropuccinia psidii (myrtle rust) on New Zealand Myrtaceae in native forest

Sutherland¹,

Soewarto²,

Beresford³

et al. 2020

NZJE

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Austropuccinia psidii (myrtle rust) was first detected on mainland Aotearoa (New Zealand) in 2017 and has established in various urban areas and native forests. To understand the spread of this pathogen and its effect on host species, surveillance for myrtle rust on Myrtaceae in native forests was undertaken in central Te Ika a Māui (North Island). In one site, with confirmed A. psidii infection, the rust infected up to 90% of new flush stem and leaves of some ramarama and rōhutu (Lophomyrtus spp.), with the pathogen eventually causing dieback of these shoots. The rust also infected developing fruit, causing it to prematurely drop, and infected all seedlings monitored in the site. It is likely that heavily infected trees will die and natural regeneration of Lophomyrtus spp. is unlikely; localised extinction is probable. Other Myrtaceae species in the stand, white rātā (Metrosideros diffusa) and mānuka (Leptospermum scoparium), were also infected but the severity of infection was less on these species than observed on Lophomyrtus spp. However, the long-term impact on these species from increasing or sustained disease pressure is unknown. Highly infected plants had decreased insect activity and diversity, highlighting the multi-tropic risk this invasive disease poses. A second site, approximately 15 km from known infected areas, which also contained Lophomyrtus spp., remained myrtle rust-free, showing that spread of this disease across landscapes is variable. This is the first monitoring study of myrtle rust on native forests in New Zealand. Continued monitoring is critical to provide information for effective management of this disease.

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The threat of myrtle rust to M257;ori taonga plant species in New Zealand

Cited by 22 publications

References 19 publications

Taxonomic similarity, more than contact opportunity, explains novel plant–pathogen associations between native and alien taxa

Taxonomic similarity, more than contact opportunity, explains novel plant–pathogen associations between native and alien taxa

Elevating and Recognising Knowledge of Indigenous Peoples to Improve Forest Biosecurity

Monitoring Austropuccinia psidii (myrtle rust) on New Zealand Myrtaceae in native forest

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