Freda Elizabeth Anderson

Freda Elizabeth Anderson
National Scientific and Technical Research Council | conicet · CERZOS - Centro de Recursos Naturales Renovables de la Zona Semiarida

Doctor in Biology

About

28
Publications
2,626
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
144
Citations
Citations since 2016
10 Research Items
97 Citations
20162017201820192020202120220510152025
20162017201820192020202120220510152025
20162017201820192020202120220510152025
20162017201820192020202120220510152025

Publications

Publications (28)
Article
Puccinia graminella is one of several rusts considered as potential biocontrol agents for the grass weed Nassella neesiana in Australia and New Zealand. While Uromyces pencanus was chosen as the most promising candidate, results of our studies on P. graminella in Argentina (where the rust and grass are native) could be useful if a complementary age...
Article
Araujia hortorum is a perennial, broad-leaved herbaceous climber native to South America considered an invasive weed in New Zealand and several other countries where it has been introduced. Ascochyta araujiae and Septoria araujiae are the causal agents of two of the most frequently encountered diseases affecting natural populations in Argentina, wh...
Article
Full-text available
Hedychium coronarium (Zingiberales: Zingiberaceae), native to the Himalayas and southern China, has become an environmental weed in many countries around the world. Reported in several provinces of Argentina, H. coronarium constitutes a serious environmental problem especially in the wetlands of natural areas of Misiones Province, such as the Iguaz...
Article
Nassella neesiana (Poaceae) is a perennial grass species indigenous to South America. While usually not troublesome and sometimes appreciated as a forage species within its native range, it is an unwanted species in other parts of the world, where it is considered a serious threat to native biodiversity and an important hindrance to agriculture. Th...
Poster
Los mayores esfuerzos en conservación se han centrado tradicionalmente en animales y plantas. Los hongos en cambio han recibido menor atención, aunque enfrentan los mismos riesgos frente al cambio climático, sobreexplotación, destrucción y fragmentación de hábitat que otros organismos. La magnitud de la diversidad fúngica a nivel global es desconoc...
Article
The objective of this work was to find practical procedures to overcome methodological drawbacks encountered during studies on sunflower downy mildew. Techniques for recovering living isolates of Plasmopara halstedii from the field and for the preservation of infected leaf samples for further molecular analysis were developed. A Polymerase Chain Re...
Article
The South American vine Araujia hortorum (Apocynaceae) is now considered an invasive species in many countries. In New Zealand it has been targeted for biological control. In its native range in Argentina it is frequently affected by cercosporoid fungi but little is known about the diseases they cause. These pathogens produce no, or scarce, conidia...
Article
Araujia hortorum E. Fourn. is native to South America, where it is a valued species. In contrast, in other parts of the world where it was introduced as an ornamental, it has become an invasive weed. In New Zealand, it has been targeted for biological control, and this motivated field surveys for fungal pathogens in its native range in Argentina. T...
Poster
During the last hundred years, plants from Argentina (e.g. water hyacinth and alligator weed) have been accidentally or deliberately transported to other countries where they became invasive weeds. In 1962, the Agriculture Research Service (ARS) of the United States Department of Agriculture established the South American Biological Control Laborat...
Article
Nassella neesiana (Chilean needle grass) is a South American grass species that is a serious weed in Australia and New Zealand. The rust fungus Uromyces pencanus is a promising biocontrol agent that could be used to control the weed in both countries. Extensive host range testing has been conducted to explore the specificity of the rust. In this pa...
Article
The rust fungus Puccinia araujiae is proposed as a biological control agent for moth plant (Araujia hortorum) in New Zealand. This pathogen completes its life cycle on this host, it has the capacity of damaging it by producing premature foliage senescence and defoliation, and, it is only known from members of the Oxypetalinae (Apocynaceae). P. arau...
Article
Full-text available
The type species of the genus Tiarosporella, T. paludosa, is epitypified and confirmed as a member of the Botryosphaeriaceae. Based on morphology and DNA sequence data of the large subunit nuclear ribosomal RNA gene (LSU, 28S) and the internal transcribed spacers (ITS) and 5.8S rRNA gene of the nrDNA operon, the genus Tiarosporella is shown to be p...
Article
The type species of the genus Tiarosporella, T. paludosa, is epitypified and confirmed as a member of the Botryosphaeriaceae. Based on morphology and DNA sequence data of the large subunit nuclear ribosomal RNA gene (LSU, 28S) and the internal transcribed spacers (ITS) and 5.8S rRNA gene of the nrDNA operon, the genus Tiarosporella is shown to be p...
Conference Paper
Full-text available
Araujia hortorum E.Fourn. (Apocynaceae) es una especie nativa de Argentina conocida vulgarmente como “tasi”. En su ambiente nativo es apreciada por su valor ornamental, alimenticio y medicinal pero en otros lugares del mundo, es una maleza invasora. El objetivo de este trabajo fue conocer las enfermedades foliares fúngicas que afectan a esta especi...
Article
Full-text available
A previously undescribed species of the genus Scopinella was found during a survey of the fungi associated with Cortaderia selloana (Poaceae) in Argentina. The ascospores are strongly asymmetrical and have the shape of a truncated pyramid with a convex quadrangular base. This peculiar ascospore shape sets this species, described here as new, apart...
Presentation
Full-text available
Compilation of foliar and floret fungal pathogens associated with pampas Cortaderia spp. in New Zealand and Argentina
Article
Three rusts, Puccinia nassellae, Uromyces pencanus, and Puccinia graminella, are being studied as potential biological control agents for Nassella neesiana (Chilean needle grass) in Australia and New Zealand. An understanding of the life cycle of a pathogen is desirable before its release as a biocontrol agent is considered, to enable the assessmen...
Article
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 achie...
Article
Nassella neesiana (Chilean needle grass), a South American species, is an intractable weed invading managed pastures and natural grasslands that has become a target for biological control in Australia and New Zealand. Studies have been carried out to assess the potential of three rusts naturally infecting this grass species in Argentina: Uromyces p...
Article
In 1990, onion leaf blotch was observed for the first time in the Lower Rio Colorado Valley (Province of Buenos Aires), the most important onion-producing region of Argentina. Since then, the disease has been found in other production areas of this country. Infections on shallot have also been recorded. The causal agent, Mycosphaerella allii-cepae,...
Conference Paper
Full-text available
Nassella trichotoma (serrated tussock) and Nassella neesiana (Chilean needle-grass) are the two most widespread and damaging species of stipoid grasses that have been introduced into Australia. A project was set up in 1999 in Argentina to investigate the potential of pathogens as biological control agents for these species. A Corticiaceae fungus fo...
Article
Full-text available
Surveys of pathogens attacking N. trichotoma and N. neesiana in South America have identified three pathogens showing potential for biological control. These are a rust, Puccinia nassellae, a smut, Ustilago sp. and a Corticiaceae basidiomycete fungus. Different strains of the P. nassellae have been found attacking N. trichotoma and N. neesiana. Dif...
Technical Report
Full-text available
Foreword Serrated tussock (Nassella trichotoma) and Chilean needle grass (Nassella neesiana) are two related species of South American grass that are highly invasive in southeastern Australia. They pose a substantial threat to Australian pastures and to native grasslands, and both species have been declared weeds of national significance under the...
Conference Paper
Full-text available
Several stipoid grasses of temperate South American origin have invaded Australia. One of these, Nassella trichotoma, is considered the most important grass weed of pas- tures in south-eastern Australia, while another, Nassella neesiana is viewed as a serious threat to native Australian grasslands. Blue heliotrope, Heliotropium amplexicaule, a toxi...
Article
Full-text available
1999. Manchas foliares de Dichondra spp. (Orejita de ratón), Convolvulaceae. Rev. Fac. Agron., La Plata 104 (1): 61-66. La orejita de ratón (Dichondra spp.), planta para césped objeto de creciente interés, se encuentra frecuentemente afectada por varias enfermedades que disminuyen su valor ornamental. Se estudia-ron tres manchas foliares en céspede...
Article
A new species of Phaeoramularia Muntañola is described as P. destruens. It has been experimentally proven to be the causal agent of a leaf spot disease of Dichondra sp. (Convolvulaceae), eventually causing leaf drop and death of plants.
Article
Full-text available
A fungus belonging to the genus Bartalinia Tassi was isolated from chlorotic leaves of Mimosa rocae (Leguminosae) As it could not be assigned to any of the known species it is here described as a new one under the name Bartalinia mellea. This is the first report of the genus for Argentina.
Article
Full-text available
4 CSIRO Entomology, c/o CERZOS, Universidad Nacional del Sur, CC 738 (8000), Bahia Blanca, Argentina Xanthium spinosum (Bathurst burr) is a widespread summer annual weed in rangeland, pasture and crops in eastern Australia. Prospects for classical biological control of this weed were investigated in the 1990s by carrying out a series of surveys for...

Network

Cited By