Exploring the host range of Fusarium tumidum, a candidate bioherbicide for gorse and broom

Barton, Jane; Gianotti, Alison F.; Morin, L.; Webster, Ray

doi:10.1071/ap03009

Cited by 7 publications

(4 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Further studies examining soil and juvenile application found that such applications caused significant reductions in seedling emergence and 95% mortality in juvenile plants [64,65]. The pathogen C. purpureum causes ‘silver leaf’ disease and has been suspected to be the cause of localised declines in woody weeds [66,67], albeit that its specific mode of action as a mycoherbicide is unknown.…”

Section: Resultsmentioning

confidence: 99%

A World of Gorse: Persistence of Ulex europaeus in Managed Landscapes

Broadfield

McHenry

2019

Plants

View full text Add to dashboard Cite

Gorse (Ulex europeus L.) is a woody legume and invasive woody weed that has been introduced to temperate pastoral landscapes worldwide. Despite the apparent cosmopolitan distribution of gorse across much of the temperate agroecological landscapes of the world, research and practice pertaining to the management of gorse has been largely constrained to single-treatments, regions, or timeframes. Gorse eradication has been widely attempted, with limited success. Using the PRISMA (preferred reporting items for systematic reviews and meta-analysis) method and a quasi-metanalytical approach, we reviewed the seminal ~299 papers pertaining to gorse management. We identified (i) the ecological characteristics of the species that predispose gorse to behaving invasively, and (ii) the success of management actions (from a plant ecological life history perspective) in reducing weed vigour and impact. A broad ecological niche, high reproductive output, propagule persistence, and low vulnerability to pests allow for rapid landscape exploitation by gorse throughout much the world. Additionally, there are differences in flowering duration and season in the northern and southern hemisphere that make gorse particularly pernicious in the latter, as gorse flowers twice per year. The implications of these life history stages and resistance to environmental sieves after establishment are that activity and efficacy of control is more likely to be favourable in juvenile stages. Common approaches to gorse control, including herbicides, biological controls, and fire have not been ubiquitously successful, and may in fact target the very site resources—sward cover, soil stability, hydrological balance—that, when degraded, facilitate gorse invasion. Ongoing seedling regeneration presents difficulties if eradication is a goal, but facilitated competition may reduce costs via natural suppression. Mechanical methods of gorse removal, though highly successful, induce chronic soil erosion and land degradation and should hence be used sparingly.

show abstract

Section: Resultsmentioning

confidence: 99%

A World of Gorse: Persistence of Ulex europaeus in Managed Landscapes

Broadfield

McHenry

2019

Plants

View full text Add to dashboard Cite

show abstract

“…35 There are other examples of broad host-range pathogens being targeted for inclusion in bioherbicides: Alternaria alternata, 28,36 Fusarium spp. including F. oxysporum 37 and F. tumidum, 38,39 Diaporthe spp., 40 Lasiodiplodia pseudotheobromae 41 and Macrophomina phaseolina. 42 The host range of some fungal species can be large, although individual strains often are limited to one or a few plant species.…”

Section: Specificity Within Broad Host-range Pathogensmentioning

confidence: 99%

“…There are other examples of broad host‐range pathogens being targeted for inclusion in bioherbicides: Alternaria alternata , 28,36 Fusarium spp. including F. oxysporum 37 and F. tumidum , 38,39 Diaporthe spp., 40 Lasiodiplodia pseudotheobromae 41 and Macrophomina phaseolina 42 …”

Section: Specificity Within Broad Host‐range Pathogensmentioning

confidence: 99%

Broad host‐range pathogens as bioherbicides: managing nontarget plant disease risk

Bourdôt

Casonato

2023

Pest Management Science

View full text Add to dashboard Cite

Plant pathogens with a broad host range are commercially more attractive as microbial bioherbicides than strictly host‐specific pathogens as a result of the wider market potential of a product capable of controlling multiple species. However, the perceived spatiotemporal disease risk to nontarget plants is a barrier to their adoption for weed control. We consider two approaches to managing this risk. First, we consider safety zones and withholding periods for bioherbicide treatment sites. These must ensure inoculum spreading from, or surviving at the site, exposes nontarget plants to no more inoculum than from natural sources. They can be determined using simple dispersal models. We show that a ratio of added:natural inoculum of 1.0 is biologically reasonable as an ‘acceptable risk’ and a sound basis for safety zones and withholding periods. These would be analogous to the ‘conditions of use’ for synthetic chemical herbicides aimed at minimizing collateral damage to susceptible plants from spray drift and persistent soil residues. Second, weed‐specific isolates of broad host‐range pathogens may avoid the need for safety zones and withholding periods. Such isolates have been found in many broad host‐range pathogen species. Their utilization as bioherbicides may more easily meet the requirements of regulators. Mixtures of different weed‐specific isolates of a pathogen could provide bioherbicides with commercially attractive spectrums of weed control activity. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

show abstract

“…Ongoing work centres on gorse (Ulex europaeus L.), Scotch broom (Cytisus scoparius (L.) Link), and Californian thistle (Cirsium arvense (L.) Scopoli). Recent research has focused on fungi pathogenic to weeds (Fröhlich et al 1999(Fröhlich et al , 2000. The investigation of fungi to control New Zealand weeds began in 1910, for control of C. arvense (Popay 1997).…”

Section: Introductionmentioning

confidence: 99%

Using parasite databases to identify potential nontarget hosts of biological control organisms

McPartland¹,

Nicholson

2003

New Zealand Journal of Botany

View full text Add to dashboard Cite

Biological control organisms undergo host range studies to identify potential nontarget hosts. The selection criterion for host range studies is primarily based on the target host's taxonomy. Thus, inaccuracies in host taxonomy may compromise the validity of host range studies. We propose that biocontrol researchers use internet-available databases to identify potential nontarget organisms that share parasites (biotrophic pathogens and pests) with target hosts, and add these organisms to host range tests. Marijuana (Cannabis sativa) has been targeted for biocontrol, and host range studies have focused upon the Moraceae. A list of Cannabis parasites was compared with database lists of pests and pathogens for hosts in the order Urticales. The databases revealed seven Cannabis biotrophic parasites that were shared by hosts in the family Urticaceae, one biotroph shared by a host in the Celtidaceae, and no biotrophs shared by hosts in the Moraceae, Cercropiaceae, or Ulmaceae. These results suggest that biocontrol host range studies of Cannabis parasites should focus on the Urticaceae and Celtidaceae as well as the Moraceae. These results also suggest that taxonomic relationships within the Uricales be reassessed.

show abstract

Exploring the host range of Fusarium tumidum, a candidate bioherbicide for gorse and broom

Cited by 7 publications

References 16 publications

A World of Gorse: Persistence of Ulex europaeus in Managed Landscapes

A World of Gorse: Persistence of Ulex europaeus in Managed Landscapes

Broad host‐range pathogens as bioherbicides: managing nontarget plant disease risk

Using parasite databases to identify potential nontarget hosts of biological control organisms

Contact Info

Product

Resources

About