Effects of Spore Concentration, Temperature, and Dew Period on Disease of Field Bindweed Caused by<i>Phoma proboscis</i>

Heiny, Dana Kelly

doi:10.1094/phyto-81-905

Cited by 26 publications

(19 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The requirement for long leaf wetness periods has also been reported for other Phoma species, such as P. proboscis on field bindweed, which required 12 h or more of dew for high levels of disease to occur in the greenhouse (Heiny and Templeton 1991). The requirement of sufficient dew period is common to a number of potential mycoherbicides but might be overcome by formulation techniques that will either bypass or decrease the dew period requirement (Heiny and Templeton 1991). Several adjuvants have been used to enhance bioherbicidal efficacy of biological control agents under field conditions (Neumann and Boland 1999;Rosskopf et al 2000;Shabana et al 1997) and may provide sufficient nutrition and protection to P. argillacea.…”

Section: Effect Of P Argillacea On Nontarget Hostsmentioning

confidence: 81%

Section: Effect Of P Argillacea On Nontarget Hostsmentioning

confidence: 97%

“…(Zhao and Shamoun 2005), a Phoma species to control Canada thistle (Cirsium arvense (L.) Scop.) (Bailey et al 2000), Phoma proboscis Heiny to control field bindweed (Convolvulus arvensis L.) (Heiny and Templeton 1991) and Phoma clematidina (Thüm.) Boerema to control old man's beard (Clematis sp.)…”

Section: Effect Of P Argillacea On Nontarget Hostsmentioning

confidence: 99%

See 2 more Smart Citations

Occurrence ofPhoma argillaceaonRubus spectabilisin British Columbia and an evaluation of its potential as a forest weed biological control agent

Sumampong

Shamoun

Punja

2008

Canadian Journal of Plant Pathology

View full text Add to dashboard Cite

A survey was conducted on Vancouver Island and in coastal mainland British Columbia of naturally occurring fungal pathogens of salmonberry (Rubus spectabilis), an endemic plant species considered to be undesirable in conifer regeneration sites. Fungi were recovered from necrotic lesions on foliage and stems and identified to genus level. An in vitro pathogenicity test was performed on 281 fungal isolates using detached salmonberry leaves. Nineteen isolates were found to be moderately to highly aggressive, causing >50% leaf area necrosis within 14 days. These included Botrytis cinerea (17 isolates), Phoma sp. (3 isolates), and Septoria rubi (1 isolate). The three isolates of Phoma, identified as P. argillacea, were selected for further testing on salmonberry plants under greenhouse conditions. Mycelial or conidial inoculum were applied to the foliage of plants, which were incubated for 48 h at 20-22°C and 100% relative humidity (RH) and then grown at 20-22°C and 55-65% RH, with a 16 h photoperiod, under greenhouse conditions. Extensive necrosis of leaves and stems developed within 14 days for all isolates using mycelia and conidia as inoculum. A minimum of 18 h of continuous leaf wetness and mycelial inoculum of 2.6 × 10 3 colony forming units/mL was required for infection to occur. In a small host range test, three economically important conifer species, namely Douglas-fir (Pseudotsuga menziesii), western hemlock (Tsuga heterophylla), and western red cedar (Thuja plicata), showed tolerance at the seedling stage with <5% disease severity. On red raspberry (Rubus idaeus), P. argillacea caused some initial damage (leaf spots and chlorosis) but failed to cause cane blight. These results demonstrate the pathogenicity of P. argillacea on salmonberry and the conditions required for establishing disease. Résumé : Une étude des agents pathogènes fongiques naturels de la ronce remarquable (Rubus spectabilis), une espèce endémique considérée comme nuisible dans les sites de reboisement de conifères, a été menée sur l'île de Vancouver et sur la côte de la Colombie-Britannique. Des champignons ont été collectés sur des lésions nécrotiques trouvées sur des feuilles ainsi que sur des tiges et ont été identifiés au niveau du genre. Un test in vitro de pathogénicité a été effectué sur 281 isolats fongiques à partir de feuilles de ronce remarquable qui avaient été collectées. Dix-neuf isolats se sont avérés de moyennement à hautement agressifs, causant de la nécrose sur plus de la moitié de la surface foliaire en moins de 14 jours. Ceux-ci incluaient Botrytis cinerea (17 isolats), Phoma sp. (3 isolats) et Septoria rubi (1 isolat). Les trois isolats de Phoma, identifiés comme étant P. argillacea, ont été choisis pour effectuer d'autres tests en serre. Des inoculums à base mycélium ou de conidies ont été appliqués sur le feuillage des plants de ronce remarquable qui, dans un premier temps, ont été incubés pendant 48 heures à 20-22°C et à 100 % HR et, ensuite, cultivés en serre à 20-22°C et à 55-65 % HR, avec une photopériode de 16 h...

show abstract

Section: Effect Of P Argillacea On Nontarget Hostsmentioning

confidence: 81%

Section: Effect Of P Argillacea On Nontarget Hostsmentioning

confidence: 97%

See 1 more Smart Citation

Occurrence ofPhoma argillaceaonRubus spectabilisin British Columbia and an evaluation of its potential as a forest weed biological control agent

Sumampong

Shamoun

Punja

2008

Canadian Journal of Plant Pathology

View full text Add to dashboard Cite

show abstract

“…This growth is comparable to conidial yields produced by other Phoma spp. that have been evaluated as bioherbicides [36,37]. …”

Section: Germination and Growth Of Phoma Commelinicolamentioning

confidence: 99%

“…For example, Heiny [39,40] isolated a highly host specific strain of P. proboscis from diseased field bindweed (Convolvulus arvensis L.). Heiny and Templeton [37] reported significant bioherbicidal effects when conidia of this fungus were applied to weed seedlings, under temperatures from 16-28 °C, and ≥9 h dew period and the compatibility with synthetic herbicides was investigated [40]. Studies of environmental factors on the effectiveness of a Phoma herbarum strain against Commelina communis showed that temperatures of 28-32 °C and a 48-h dew period were required for optimal control [41].…”

Section: Disease Progression Of P Commelinicola On C Diffusa Under mentioning

confidence: 99%

Biological Control of Spreading Dayflower (Commelina diffusa) with the Fungal Pathogen Phoma commelinicola

2015

View full text Add to dashboard Cite

Greenhouse and field experiments showed that conidia of the fungal pathogen, Phoma commelinicola, exhibited bioherbicidal activity against spreading dayflower (Commelina diffusa) seedlings when applied at concentrations of 10 6 to 10 9 conidia· mL −1 .Greenhouse tests determined an optimal temperature for conidial germination of 25 °C -30 °C, and that sporulation occurred on several solid growth media. A dew period of ≥ 12 h was required to achieve 60% control of cotyledonary-first leaf growth stage seedlings when applications of 10 8 conidia· mL −1 were applied. Maximal control (80%) required longer dew periods (21 h) and 90% plant dry weight reduction occurred at this dew period duration. More efficacious control occurred on younger plants (cotyledonary-first leaf growth stage) than older, larger plants. Mortality and dry weight reduction values in field experiments were ~70% and >80%, respectively, when cotyledonary-third leaf growth stage seedlings were sprayed with 10 8 or 10 9 conidia· mL −1 . These results indicate that this fungus has potential as a biological control agent for controlling this problematic weed that is tolerant to the herbicide glyphosate.

show abstract

The Genus Phoma: A Review of Its Potential Bioactivities, Implications, and Prospects

Luft¹,

Confortin²,

Todero³

et al. 2021

Phoma: Diversity, Taxonomy, Bioactivities, and Nanotechnology

View full text Add to dashboard Cite

Effects of Spore Concentration, Temperature, and Dew Period on Disease of Field Bindweed Caused byPhoma proboscis

Cited by 26 publications

References 0 publications

Occurrence ofPhoma argillaceaonRubus spectabilisin British Columbia and an evaluation of its potential as a forest weed biological control agent

Occurrence ofPhoma argillaceaonRubus spectabilisin British Columbia and an evaluation of its potential as a forest weed biological control agent

Biological Control of Spreading Dayflower (Commelina diffusa) with the Fungal Pathogen Phoma commelinicola

The Genus Phoma: A Review of Its Potential Bioactivities, Implications, and Prospects

Contact Info

Product

Resources

About