Colletotrichum coccodes, a Potential Bioherbicide for Control of Velvetleaf (Abutilon theophrasti)

Wymore, L. A.; Poirier, C.; Watson, A. K.; Gotlieb, A. R.

doi:10.1094/pd-72-0534

Cited by 65 publications

(48 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The optimum temperatures for growth, germination, and disease development are similar to those reported for other Colletotrichum spp. evaluated as mycoherbicides [24][25][26][27][28]. These temperatures are typical of those that occur in much of the southeastern U. S., where coffee senna is a serious weed problem [4].…”

Section: Discussionmentioning

confidence: 99%

Biological Control Potential of Colletotrichum gloeosporioides for Coffee Senna (Cassia occidentalis)

Boyette¹,

Hoagland²,

Weaver³

et al. 2012

AJPS

View full text Add to dashboard Cite

A fungal pathogen, Colletotrichum gloeosporioides was isolated from a greenhouse-grown seedling of coffee senna (Cassia occidentalis) and evaluated as a mycoherbicide for that weed. Host range tests revealed that coffee senna, wild senna (C. marilandica), and sicklepod (C. obtusifolia) were also affected by this pathogen, but 35 other crop and weed species, representing 8 botanical families were not affected. The fungus sporulated prolifically on solid and liquid media with maximum spore germination and growth occurring at 20˚C -30˚C. Optimal environmental conditions included at least 12 h of free moisture (dew) at 20˚C -30˚C. Spray mixtures containing approximately 1.0 × 10 5 or more conidia·ml -1 gave maximum control when coffee senna seedlings were sprayed until runoff occurred. Coffee senna seedlings that were in the cotyledon to first-leaf growth stage were most susceptible to this pathogen. Weed control efficacy studies under field conditions demonstrated that control of coffee senna was directly proportional to the inoculum concentration applied. Results of these tests suggest that this fungus has potential as a mycoherbicide to control coffee senna, a serious weed in the southeastern U.S.

show abstract

Section: Discussionmentioning

confidence: 99%

Biological Control Potential of Colletotrichum gloeosporioides for Coffee Senna (Cassia occidentalis)

Boyette¹,

Hoagland²,

Weaver³

et al. 2012

AJPS

View full text Add to dashboard Cite

show abstract

“…Conversely, pathogens that infect below the soil surface are best delivered in a solid or granular formulation. Granular formulations are better suited for use as pre-planting or pre-emergence mycoherbicides than are liquid spray formulations because: (i) granules provide a buffer from environmental extremes, (ii) granules can provide a food-base for the fungus, prolonging persistence, and (iii) granules are less likely to be washed away from the treated areas (Mitchell, 1986;Wymore et al, 1988).…”

Section: Granular Formulationsmentioning

confidence: 99%

Bioherbicides for weed control.

Weaver¹,

Lyn²,

Boyette³

et al. 2007

Non-Chemical Weed Management: Principles, Concepts and Technology

View full text Add to dashboard Cite

This chapter focuses on the use of plant pathogens as bioherbicides (e.g. mycoherbicides) for weed control. The application technology of bioherbicides is discussed, as well as their compatibility with other weed management practices. Through a pragmatic understanding of economic constraints and safety, the intelligent use of formulation and deployment methods, and with genetic engineering, the pathogen discoveries of the past might be harnessed as the bioherbicides of the future.

show abstract

“…Many weak pathogens (fungi that invade only senescent or stressed plants) can be induced to cause herbicidal effects when applikd with low and otherwise innocuous levels of certain chemical herbicides or growth regulators (Rahe et al 1990;Scheepens 1987;Wymore et al 1987). Assuming public acceptance of any chemical herbicides, perhaps their levels in the environment can be reduced by combining them with pathogenic fungi.…”

Section: Potential Role In Forestrymentioning

confidence: 99%

“…Because many potential mycoherbicides are weak pathogens, often innocuously present in the soil or air surrounding host plants, special treatments may be necessary either to the pathogens or the host to increase herbicidal efficacy. These treatments may consist of nutrients to stimulate spore germination, humectants to prolong the dew period, sunscreens to minimize inactivation by ultraviolet light, wounding to allow penetration, or sub-lethal dosages of chemical herbicides or growth regulators to increase host susceptibility (Rahe et al 1990;Wymore et al 1987). Many mycoherbicide preparations may therefore be multi-component systems, combining one or more pathogenic fungi with adjuvants or agents which stress the host.…”

Section: Potential Role In Forestrymentioning

confidence: 99%

The development and potential role of mycoherbicides for forestry

Wall¹,

Prasad²,

Shamoun³

1992

The Forestry Chronicle

View full text Add to dashboard Cite

With increasing intensification of forest management and limited options for control of competing vegetation, there is need for research on alternative vegetation management methods, including biological control. Most forest weeds in Canada are native species with useful as well as detrimental roles, and therefore classical biological control with introduced natural enemies generally cannot be considered. At present, use of native fungal pathogens, or mycoherbicides, is one of the most promising approaches, and recent advancements in agriculture indicate that effective, site-specific controls using mycoherbicides are possible. Mycoherbicide use in forestry appears attractive because of the likelihood of fewer off-target effects than present vegetation management methods and because it could provide either selective controls for specific weeds or broad spectrum controls.Vegetation management in forestry has some unique aspects which will make the development of biological controls different from that in agriculture. There are many indigenous plant pathogens that are potential mycoherbicides, but their efficacy will need to be enhanced by adjuvants, stress treatments, and integration with other vegetation control practices. Currently, at three Canadian institutions and several other locations worldwide, there are research programs on biological control of forest vegetation.

show abstract

Colletotrichum coccodes, a Potential Bioherbicide for Control of Velvetleaf (Abutilon theophrasti)

Cited by 65 publications

References 0 publications

Biological Control Potential of <i>Colletotrichum gloeosporioides</i> for Coffee Senna (<i>Cassia occidentalis</i>)

Biological Control Potential of <i>Colletotrichum gloeosporioides</i> for Coffee Senna (<i>Cassia occidentalis</i>)

Bioherbicides for weed control.

The development and potential role of mycoherbicides for forestry

Contact Info

Product

Resources

About

Colletotrichum coccodes, a Potential Bioherbicide for Control of Velvetleaf (Abutilon theophrasti)

Cited by 65 publications

References 0 publications

Biological Control Potential of &lt;i&gt;Colletotrichum gloeosporioides&lt;/i&gt; for Coffee Senna (&lt;i&gt;Cassia occidentalis&lt;/i&gt;)

Biological Control Potential of &lt;i&gt;Colletotrichum gloeosporioides&lt;/i&gt; for Coffee Senna (&lt;i&gt;Cassia occidentalis&lt;/i&gt;)

Bioherbicides for weed control.

The development and potential role of mycoherbicides for forestry

Contact Info

Product

Resources

About

Biological Control Potential of <i>Colletotrichum gloeosporioides</i> for Coffee Senna (<i>Cassia occidentalis</i>)

Biological Control Potential of <i>Colletotrichum gloeosporioides</i> for Coffee Senna (<i>Cassia occidentalis</i>)