Pathogenicity of seedborne Alternaria and Stemphylium species and stem-infecting Neofusicoccum and Lasiodiplodia species to cannabis (Cannabis sativa L., marijuana) plants

Roberts, Alastair J.; Punja, Zamir K.

doi:10.1080/07060661.2021.1988712

Cited by 6 publications

(6 citation statements)

References 74 publications

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“…The utility of disease-tolerant genotypes that may have been developed through selective breeding and genotype screening is an important aspect of IDM for stock plants. Disease-tolerant genotypes of cannabis have been identified for a number of pathogens, including root rot (Fusarium oxysporum) [23], powdery mildew (Golovinomyces ambrosiae) [10][11][12]32], leaf blight (Neofusicoccum parvum) [33], and bud rot (B. cinerea) [34,35] (Figure 8). Recent research suggests that specific defense genes may play a role in certain hostpathogen interactions, leading to a resistant phenotype [11][12][13]36].…”

Section: Utilizing Disease-tolerant Genotypesmentioning

confidence: 99%

“…Routine testing for pathogens that may be present in seeds is not currently a standard practice in the cannabis industry, which can result in the spread of seed-borne pathogens. Cannabis and hemp seeds are known to harbour species of Alternaria, Fusarium, and several post-harvest molds [33,37], as well as HLVd [26,27]. Implementing stringent sanitation protocols and testing for fungal or bacterial pathogens using PCR and for viruses or viroids using RT-PCR, as described previously, are important IDM approaches during plant propagation in greenhouse crops, including cannabis [4,7,38,39].…”

Section: Propagation Stagementioning

confidence: 99%

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Integrated Management of Pathogens and Microbes on Cannabis sativa L. (Cannabis) under Greenhouse Conditions

Buirs,

PUNJA

2024

Preprint

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The increased cultivation of high THC-containing Cannabis sativa L. (cannabis), particularly in greenhouses, has resulted in a greater incidence of diseases and molds that can negatively affect the growth and quality of the crop. Among them, the most important diseases are root rots (Fusarium and Pythium spp.), Botrytis bud rot (Botrytis cinerea), powdery mildew (Golovinomyces ambrosiae), cannabis stunt disease (caused by Hop latent viroid), and a range of microbes that reduce post-harvest quality. An integrated management approach to reduce the impact of these diseases/microbes requires combining different approaches that target the reproduction, spread and survival of the associated pathogens, many of which can occur on the same plant simultaneously. These approaches will be discussed in the context of developing an integrated plan to manage the important pathogens of greenhouse-grown cannabis at different stages of plant development. These stages include maintenance of stock plants, propagation through cuttings, vegetative growth of plants, and flowering. The cultivation of cannabis genotypes with tolerance or resistance to various pathogens is a very important approach, followed by the maintenance of pathogen-free stock plants. When combined with cultural approaches (sanitation, management of irrigation, and monitoring for diseases) and environmental approaches (greenhouse climate modification), a significant reduction in pathogen development and spread can be achieved. The use of preventive applications of microbial biological control agents and reduced risk biorational products can also reduce disease development at all stages of production in jurisdictions where they are registered for use. The combined use of promising strategies for integrated disease management on cannabis plants during greenhouse production will be reviewed. Future areas for research are identified.

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Section: Utilizing Disease-tolerant Genotypesmentioning

confidence: 99%

Section: Propagation Stagementioning

confidence: 99%

Integrated Management of Pathogens and Microbes on Cannabis sativa L. (Cannabis) under Greenhouse Conditions

Buirs,

PUNJA

2024

Preprint

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“…The utility of disease-tolerant genotypes that may have been developed through selective breeding and genotype screening is an important aspect of IDM for stock plants. Disease-tolerant genotypes of cannabis have been identified for a number of pathogens, including root rot ( Fusarium oxysporum ) [ 23 ], powdery mildew ( Golovinomyces ambrosiae ) [ 10 , 11 , 12 , 32 ], leaf blight ( Neofusicoccum parvum ) [ 33 ], and bud rot ( B. cinerea ) [ 34 , 35 ] ( Figure 8 ). Recent research suggests that specific defense genes may play a role in certain host–pathogen interactions, leading to a resistant phenotype [ 11 , 12 , 13 , 36 ].…”

Section: Cannabis Pathogens: Symptoms and Management Approaches At Di...mentioning

confidence: 99%

“…Routine testing for pathogens that may be present in seeds is not currently a standard practice in the cannabis industry, which can result in the spread of seed-borne pathogens. Cannabis and hemp seeds are known to harbour species of Alternaria , Fusarium , and several post-harvest molds [ 33 , 37 ], as well as HLVd [ 26 , 27 ]. Implementing stringent sanitation protocols and testing for fungal or bacterial pathogens using PCR and for viruses or viroids using RT-PCR, as described previously, are important IDM approaches during plant propagation in greenhouse crops, including cannabis [ 4 , 7 , 38 , 39 ].…”

Section: Cannabis Pathogens: Symptoms and Management Approaches At Di...mentioning

confidence: 99%

Integrated Management of Pathogens and Microbes in Cannabis sativa L. (Cannabis) under Greenhouse Conditions

Buirs,

Punja

2024

Plants

Self Cite

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The increased cultivation of high THC-containing Cannabis sativa L. (cannabis), particularly in greenhouses, has resulted in a greater incidence of diseases and molds that can negatively affect the growth and quality of the crop. Among them, the most important diseases are root rots (Fusarium and Pythium spp.), bud rot (Botrytis cinerea), powdery mildew (Golovinomyces ambrosiae), cannabis stunt disease (caused by hop latent viroid), and a range of microbes that reduce post-harvest quality. An integrated management approach to reduce the impact of these diseases/microbes requires combining different approaches that target the reproduction, spread, and survival of the associated pathogens, many of which can occur on the same plant simultaneously. These approaches will be discussed in the context of developing an integrated plan to manage the important pathogens of greenhouse-grown cannabis at different stages of plant development. These stages include the maintenance of stock plants, propagation through cuttings, vegetative growth of plants, and flowering. The cultivation of cannabis genotypes with tolerance or resistance to various pathogens is a very important approach, as well as the maintenance of pathogen-free stock plants. When combined with cultural approaches (sanitation, management of irrigation, and monitoring for diseases) and environmental approaches (greenhouse climate modification), a significant reduction in pathogen development and spread can be achieved. The use of preventive applications of microbial biological control agents and reduced-risk biorational products can also reduce disease development at all stages of production in jurisdictions where they are registered for use. The combined use of promising strategies for integrated disease management in cannabis plants during greenhouse production will be reviewed. Future areas for research are identified.

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“…(Welch et al, 2022) Estudo da resistência genética em diferentes genótipos da Cannabis em relação aos patógenos identificados, visando o desenvolvimento de variedades mais resistentes. (Roberts & Punja, 2021) Trabalhos para elucidar a presença de microrganismos e seus possíveis riscos dentro do contexto da cannabis medicinal. (Thompson et al, 2017) Cluster 2 Potencial de fungos endofíticos associados a cannabis.…”

Section: Clusterunclassified

Fungal contamination of medicinal cannabis: A bibliometric evaluation, trends, and future perspectives

Alzate,

Clara Shiroma,

Castro-Rios

2024

Sci. agropecu.

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Fungal contamination is an important problem in cannabis and medical cannabis production, as fungi can produce toxic compounds or reduce the quality and safety of the product. The aim of this study was to perform a bibliometric evaluation related to fungal contamination in cannabis, analyzing current trends in this field and providing future perspectives for research. For this purpose, an exhaustive search was carried out in the scientific literature in electronic databases such as Scopus and Web of Science (WOS), covering the period from 2000 to 2023. The results obtained were processed through bibliometrics and network analysis, using tools such as RStudio and Bibliometrix software. The results revealed that the main themes associated with fungal contamination in cannabis are focused on: diseases related to fungal contamination of the plant, use of fungi as an alternative biological control in cannabis cultivation, metabolites associated with cannabis and their potential in fungal control, as well as fungal diversity in cannabis cultivation and postharvest and the risk to consumer health. Finally, future research areas are proposed to address the challenge of fungal contamination in medicinal cannabis production, covering topics such as pest control, contamination, genetic resistance, active compounds, analysis methods, and the impact of fungi on cannabis.

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Pathogenicity of seedborne Alternaria and Stemphylium species and stem-infecting Neofusicoccum and Lasiodiplodia species to cannabis (Cannabis sativa L., marijuana) plants

Cited by 6 publications

References 74 publications

Integrated Management of Pathogens and Microbes on <em>Cannabis sativa</em> L. (Cannabis) under Greenhouse Conditions

Integrated Management of Pathogens and Microbes on <em>Cannabis sativa</em> L. (Cannabis) under Greenhouse Conditions

Integrated Management of Pathogens and Microbes in Cannabis sativa L. (Cannabis) under Greenhouse Conditions

Fungal contamination of medicinal cannabis: A bibliometric evaluation, trends, and future perspectives

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