Puccinia araujiae , a promising classical biocontrol agent for moth plant in New Zealand: Biology, host range and hyperparasitism by Cladosporium uredinicola

Anderson, Freda E.; López, Silvina P. Santos; Sánchez, Romina M.; Fuentealba, Cintia G. Reinoso; Barton, Jane

doi:10.1016/j.biocontrol.2015.12.015

Cited by 14 publications

(10 citation statements)

References 21 publications

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“…The search for biological control agents led to proposal of the rust fungus Puccinia araujiae Lev. in New Zealand [ 8 , 9 , 10 ]. More recently, Ascohyta araujiae Speg.…”

Section: Introductionmentioning

confidence: 99%

Araufuranone: A New Phytotoxic Tetrasubstituted Dihydrofuro[3,2-b]furan-2(5H)-One Isolated from Ascochyta araujiae

et al. 2022

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Araujia hortorum is a perennial vining plant species native to South America. It was introduced into many countries for ornamental and medicinal purposes as well as for its edible fruits, but it has become highly invasive, generating severe environmental problems. Biological control using bioherbicides and natural compounds is an interesting control option. The pathogenic fungus Ascochyta araujiae, isolated from infected leaves of A. hortorum, could be considered as a potential biocontrol agent. Its ability to produce bioactive metabolites was studied. The organic extract of the fungal culture filtrates showed interesting phytotoxic activities consisting of clearly visible necrotic symptoms (0.5–1 cm in diameter) in the punctured leaves. Thus, it was purified; this afforded three main metabolites. These were chemically and biologically characterised: one proved to be a new pentasubstituted dihydrofuro[3,2-b]furan-2(5H)-one, named araufuranone (1). The others were the already known fungal metabolites neovasinin and 2,4-dihydroxy-6-hydoxymethylbenzaldehyde (2 and 3). The structure of araufuranone was determined using spectroscopic methods (essentially 1D and 2D 1H and 13C NMR and HR ESIMS spectra); its relative configuration was assigned by a NOESY spectrum. To the best of our knowledge, araufuranone is the first example of a naturally occurring compound showing that carbon skeleton. Assayed by a puncture, araufuranone proved to be weakly active on the leaves of Diplotaxis sp. and Sonchus sp.; the other two metabolites were even less toxic. Tested on cress, compounds 2 and 3 were able to partially inhibit rootlet elongation whereas araufuranone was almost inactive.

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“…The search for biological control agents led to proposal of the rust fungus Puccinia araujiae Lev. in New Zealand [ 8 , 9 , 10 ]. More recently, Ascohyta araujiae Speg.…”

Section: Introductionmentioning

confidence: 99%

Araufuranone: A New Phytotoxic Tetrasubstituted Dihydrofuro[3,2-b]furan-2(5H)-One Isolated from Ascochyta araujiae

et al. 2022

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“…pseudocladosporioides (Torres et al, 2017), and C . uredinicola (Anderson et al, 2016; Dolińska et al, 2011; Morgan‐Jones & McKemy, 1990). To our knowledge, rust mycoparasitism or antagonism by members of the C .…”

Section: Discussionmentioning

confidence: 99%

“…cladosporioides complex such as C. tennuisimum (Assante et al, 2004;Moricca et al, 2001Moricca et al, , 2005, C. cladosporioides (Torres et al, 2017;Zhan et al, 2014), C. pseudocladosporioides (Torres et al, 2017), and C. uredinicola (Anderson et al, 2016;Dolińska et al, 2011;Morgan-Jones & McKemy, 1990). To our knowledge, rust mycoparasitism or antagonism by members of the C. herbarum complex has not been previously reported.…”

Section: Additional Mechanisms Of Disease Modificationmentioning

confidence: 99%

Phylogenetic conservatism of mycoparasitism and its contribution to pathogen antagonism

et al. 2022

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Microbes play diverse and vital roles in ecosystems, from oxygen production to decomposition. Microbial function is known to be influenced both by adaptation to the environment and shared ancestry (Martiny et al., 2013;Powell et al., 2009). In particular, closely related microbes tend to have more similar functions due to phylogenetic trait conservatism (Goberna & Verdu, 2016;Isobe et al., 2019). While much previous research has focused on bacteria and archaea, advances in molecular tools across the tree of life have fuelled interest in addressing whether more closely related fungi also share more similar functions (Zanne et al., 2019).

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“…3) To avoid culture contamination with antagonists, more resources need to be invested during agent collection and production, contaminated material needs to be discarded, and methods need to be developed to clean and maintain clean cultures and inoculum (Morin et al, 2000b;Barton et al, 2005;Anderson et al, 2010;Kurose et al, 2012;Anderson et al, 2016); 4) Antagonists reduce infection pressure of the pathogen in the field. By inhibiting the invasion of plant tissue, the production and viability of spores and the damaging of rust galls, the biocontrol effectiveness of the agent is reduced (Morris, 1999;Dodd et al, 2010;Kurose et al, 2012;Garbelotto et al, 2019); 5) Presence of antagonists affect laboratory, glasshouse, and field studies.…”

Section: Discussionmentioning

confidence: 99%

Plant pathogens as introduced weed biological control agents: Could antagonistic fungi be important factors determining agent success or failure?

Breeÿen

Lange

Fowler

2022

Front. Fungal Biol.

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Mycoparasitic interactions are common in nature, form part of the microbiota of plants, and are considered significant contributors to fungus-fungus antagonism. Mycoparasites kill plant pathogens, protect the plant from abiotic and biotic stressors, and reduce disease incidence and severity at the plant population level. Their exploitation as biocontrol agents in agriculture is well documented. However, mycoparasites may potentially affect classical fungal biocontrol agents of invasive weed species. Classical biological control, or biocontrol, of invasive weeds involves the intentional introduction of exotic, usually co-evolved plant pathogens and insects, for permanent establishment and long-term control of the target plant. Agent establishment, effectiveness, and safety are the critical elements for a successful weed biocontrol programme. Establishment and effectiveness of agents on the invasive plant often vary throughout the invaded range with about two-thirds of weed biocontrol agents failing to suppress their target weed. There are many documented reasons why weed biocontrol agents do not establish or are ineffective when they do, and the presence and accumulation of natural enemies in the invaded range is one of them. Endophyte-enriched, invasive weeds and those forming mutualistic associations with indigenous, native endophytes could explain the lack of consistency of some classical biological control introductions. However, another variable could be factored into the mix: mycoparasitism, where one fungus parasitises another, the natural enemies of the plant’s natural enemies. In this review article, we introduce the concept of invasive weed biocontrol and the history of using plant pathogens as biocontrol agents. We discuss the success and failure of fungal agent programmes and delve into the patterns of success or failure, with a focus on the potential antagonistic role of endophytes and mycoparasites.

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Puccinia araujiae , a promising classical biocontrol agent for moth plant in New Zealand: Biology, host range and hyperparasitism by Cladosporium uredinicola

Cited by 14 publications

References 21 publications

Araufuranone: A New Phytotoxic Tetrasubstituted Dihydrofuro[3,2-b]furan-2(5H)-One Isolated from Ascochyta araujiae

Araufuranone: A New Phytotoxic Tetrasubstituted Dihydrofuro[3,2-b]furan-2(5H)-One Isolated from Ascochyta araujiae

Phylogenetic conservatism of mycoparasitism and its contribution to pathogen antagonism

Plant pathogens as introduced weed biological control agents: Could antagonistic fungi be important factors determining agent success or failure?

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