Studies to assess the suitability of<i>Uromyces pencanus</i>as a biological control agent for<i>Nassella neesiana</i>(Poaceae) in Australia and New Zealand

Anderson, Freda E.; Barton, Jane; McLaren, David

doi:10.1071/ap09057

Cited by 15 publications

(16 citation statements)

References 17 publications

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“…has since been identified as the most promising control agent for N. neesiana. It has been observed to have a negative impact on its host in the laboratory (Giordano et al 2009) and in the field in Argentina, where it naturally infects N. neesiana and appears to be expanding its geographical distribution (Anderson et al 2006(Anderson et al , 2010. It is therefore expected to impose a negative effect on N. neesiana populations in Australia and New Zealand, should it eventually be introduced in these countries.…”

Section: Introductionmentioning

confidence: 92%

Microscopic observations of a compatible host/pathogen interaction between a potential biocontrol agent (Uromyces pencanus) and its target weed (Nassella neesiana)

et al. 2010

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Uromyces pencanus is a prospective biocontrol agent for Nassella neesiana in Australia and New Zealand. The infection process of U. pencanus urediniospores in leaves of its susceptible host N. neesiana was found to be similar to that of most other rust species. A pattern against which to compare nonhost reactions in host range experiments was achieved using a modification of Bruzzese and Hasan's whole leaf clearing and staining technique. The staining of microtome leaf sections provided supplemental information about this pathosystem.

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Section: Introductionmentioning

confidence: 92%

Microscopic observations of a compatible host/pathogen interaction between a potential biocontrol agent (Uromyces pencanus) and its target weed (Nassella neesiana)

et al. 2010

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“…They evaluated the biocontrol potential of the rust in a greenhouse and field inoculation experiments and observed that the rust rapidly killed infected plants and reduced or prevented seed production. Similarly, Anderson et al [ 20 ] conducted a study to evaluate the potential of three rusts naturally infecting Chilean needle grass ( Nassella neesiana ) in Argentina, Uromyces pencanus , Puccinia graminella , and P. nassellae , as biocontrol agents. They found U. pencanus to be most effective due to the damage it inflicts on its host in the field.…”

Section: Biology Pathogenicity and Life Cycle Of Uromycesmentioning

confidence: 99%

A Global Overview of Diversity and Phylogeny of the Rust Genus Uromyces

Gautam¹,

Avasthi

Verma

et al. 2022

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Uromyces is the second-largest plant pathogenic rust genus, is responsible for numerous diseases, and has major effects on both agricultural and non-agricultural plants. The genus is generally characterized by its unicellular teliospores that help to characterize it and distinguish it from another important rust genus, Puccinia. In this study, a global overview of the diversity and distribution of Uromyces is presented based on both online and offline resources. The information obtained was analyzed for numerical and graphical summaries to provide the diversity and distribution of the genus by country and continent. Besides this, broad taxonomical aspects, a brief life cycle, and other comparative aspects on diversity and distribution were also provided. In addition, a phylogenetic analysis based on the ITS and nLSU DNA sequence data available in GenBank and published literature was performed to examine the intergeneric relationships of Uromyces. The results obtained revealed that the rust genus is found distributed over 150 countries, territories, and occupancies of the world on around 647 plant genera belonging to 95 plant families. Phylogenetic studies based on LSU and ITS sequence data revealed that Uromyces species are polyphyletic and require more DNA-based analyses for a better understanding of their taxonomic placement.

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“…Furthermore, if animals are forced to graze it, the fibres, which are indigestible, can form boles in the rumen, causing rapid loss of health, which may lead to death (Wells and De Beer, 1987;Campbell, 1998). This reduction in pasture quality can be massive, leading to sub-economic carrying capacities (Campbell, 1998;McLaren et al, 2004;Anderson et al, 2010). In New Zealand, carrying capacity reductions of up to 90% were reported on some farms, leading to the abandonment of sheep farming (Healy, 1945).…”

Section: Socio-economic Impactmentioning

confidence: 99%

“…Most of the losses were suffered by the wool and lamb industries due to reduced carrying capacity on invaded farms (Vere and Campbell, 1984). Young animals, especially lambs, can have their skin or eyes damaged by the sharp awns, while the awns are difficult to remove from wool and reduce its quality (Anderson et al, 2010;Campbell, 1998).…”

Section: Socio-economic Impactmentioning

confidence: 99%

“…Fungus N. trichotoma Potential (Briese and Evans, 1998;Anderson et al, 2002;McLaren and Cowan, 2012 (Anderson et al, 2011(Anderson et al, , 2006) Puccinia nassellae (Pucciniaceae) Fungus N. neesiana, N. trichotoma Not host specific and not sufficiently pathogenic (Anderson et al, 2002;Anderson et al, 2011Anderson et al, , 2006McLaren and Cowan, 2012 (Briese and Evans, 1998;Anderson et al, 2006Anderson et al, , 2010Anderson et al, , 2011Anderson et al, , 2017Flemmer et al, 2010 (Briese and Evans, 1998;Anderson et al, 2002) ecological, economic, social and legal issues will probably be the most effective (Anderson et al, 2003;Early et al, 2016).…”

Section: Integrated Controlmentioning

confidence: 99%

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The invasive grass genus Nassella in South Africa: A synthesis

Mapaura

Canavan

Richardson

et al. 2020

South African Journal of Botany

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Three species of Nassella have naturalized in South Africa. Nassella trichotoma and N. tenuissima are declared weeds under category 1b of the National Environmental Management: Biodiversity Act (NEM:BA) and occur mainly in the montane grasslands of the Western and Eastern Cape provinces. Nassella neesiana is not listed in NEM:BA but is naturalized in the Eastern Cape, Western Cape and Free State provinces. Research conducted in the 1970s and 1980s led to vigorous government-funded awareness and control campaigns which ended in 2000. No research on Nassella distribution or control has been undertaken since then. Despite this hiatus, Nassella remains a dangerous genus in southern Africa, given the serious impacts of these species in similar social-ecological systems in Australia and New Zealand. This paper presents a synthesis of available information about Nassella invasions in South Africa and identifies research gaps. It specifically addresses these questions: What identification issues exist? What is the current spatial distribution of Nassella? What is the autecology of the genus? What are the social-ecological impacts of Nassella? What control measures are currently applied and what are their strengths and limitations? What do we know about Nassella distribution and its response to climate change? This paper highlights many knowledge gaps about Nassella, such as the species' current distribution range, field identification and detection difficulties, and the uncoordinated control efforts that require urgent research to inform an effective management response.

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Studies to assess the suitability ofUromyces pencanusas a biological control agent forNassella neesiana(Poaceae) in Australia and New Zealand

Cited by 15 publications

References 17 publications

Microscopic observations of a compatible host/pathogen interaction between a potential biocontrol agent (Uromyces pencanus) and its target weed (Nassella neesiana)

Microscopic observations of a compatible host/pathogen interaction between a potential biocontrol agent (Uromyces pencanus) and its target weed (Nassella neesiana)

A Global Overview of Diversity and Phylogeny of the Rust Genus Uromyces

The invasive grass genus Nassella in South Africa: A synthesis

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