Surveys for potential biocontrol agents for moth plant in New Zealand and Argentina

Waipara, Nick; Winks, C. J.; Gianotti, Alison F.; Villamil, Carlos B.; Villamil, S.C.; Delhey, R.; Kiehr, M; Traversa, M. G.; Carpintero, Diego Leonardo

doi:10.30843/nzpp.2006.59.4498

Cited by 17 publications

(7 citation statements)

References 6 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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“…Araujia hortorum is an invasive species in New Zealand, Australia, Spain, and North America, often regarded as a weed pest (Vivian-Smith and Panetta 2005). Surveys for potential biological control agents have therefore been undertaken, with A. australis currently as the main candidate (Silveira-Guido and Habeck 1976;Waipara et al 2006;Carpintero and Testoni 2013). Given our results, A. nigra can be considered as an alternative option for the biological control of A. hortorum and related vines in Uruguay.…”

Section: Discussionmentioning

confidence: 97%

The curvicauda species group of Anastrepha Schiner, 1868 (Diptera, Tephritidae, Trypetinae) in Uruguay: new records of species and host plant

Calvo¹,

Delgado²,

Duarte³

et al. 2019

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We report for the first time the occurrence in Uruguay of three species of Anastrepha, which belong to the curvicauda species group. Specimens of Anastrepha australis (Blanchard, 1959), Anastrepha littoralis (Blanchard, 1959), and Anastrepha nigra (Blanchard, 1959) were collected with McPhail traps baited with PBX ® yeast/borax placed in fruit orchards. These records represent the most southern distribution known for A. littoralis and A. nigra, in addition to the first host plant records for A. nigra, which were reared from larvae on fruits of Araujia hortorum E. Fourn. (Apocynaceae).

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“…At each site, 0 collection locations were randomly selected. Methods outlined previously to sample moth plant (Waipara et al 2006) were used to collect invertebrates present on Japanese honeysuckle. A collecting tray (80 x 80 cm) was placed under suitable parts of selected plants, and the foliage above the tray was hit five times with a solid stick.…”

Section: Materials and Methods Survey Of Invertebrates On Japanese Homentioning

confidence: 99%

“…A dissecting microscope was used to search necrotic areas for diagnostic reproductive structures of fungi. Methods outlined previously (Waipara et al 2006) were used to isolate fungi from diseased tissues. Small pieces of tissue (469 in total) were cut from the leading edge of diseased areas and surface sterilised.…”

Section: Survey Of Plant Pathogens On Japanese Honeysucklementioning

confidence: 99%

Natural enemies of Japanese honeysuckle <i>Lonicera japonica</i> in New Zealand

Waipara

Winks²,

Smith³

et al. 2007

NZPP

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Japanese honeysuckle is rapidly increasing as a weed throughout most of the North Island and northern South Island of New Zealand. A classical biological control programme was initiated in 2004-2005 with a survey of the natural invertebrate fauna and pathogens associated with the weed in New Zealand. The honeysuckle was being attacked by a diverse range of native and introduced invertebrates. But overall the damage was minimal and none of the herbivore niches on the weed were well utilised implying that exotic agents may have a chance of inflicting additional damage that might be sufficient to control the species. Most damage was caused by foliage feeders, such as lepidopterous larvae and thrips, but this affected less than 5% of total plant biomass. Primary and secondary foliar pathogens, such as Pseudocercospora lonicerae, Colletotrichum gloeosporioides, Insolibasidium deformans and Phoma spp., were frequently recorded. Potential use of these natural enemies for weed biocontrol is discussed.

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Surveys for potential biocontrol agents for moth plant in New Zealand and Argentina

Cited by 17 publications

References 6 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

The curvicauda species group of Anastrepha Schiner, 1868 (Diptera, Tephritidae, Trypetinae) in Uruguay: new records of species and host plant

Natural enemies of Japanese honeysuckle <i>Lonicera japonica</i> in New Zealand

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