根癌农杆菌复合物引起大麻(cannabis sativa L.,大麻)植物的冠胆发育

IF 1.6 4区 农林科学 Q3 PLANT SCIENCES Canadian Journal of Plant Pathology Pub Date : 2023-06-26 DOI:10.1080/07060661.2023.2224776
J. Holmes, H. Sanghera, Z. Punja
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Isolations made from root and stem galls on MacConkey medium (selective for Gram -ve bacteria) and on D1 medium (selective for Agrobacterium spp.) yielded a range of bacterial species, which did not include Agrobacterium sp. However, the presence of Agrobacterium in gall tissues was confirmed following PCR amplification with primers for the indole-acetic acid (iaa) H gene on the T-DNA region of Agrobacterium spp. and showed > 99% similarity to A. tumefaciens. Artificial inoculations were conducted using an A. tumefaciens strain from ATCC (Rhizobium radiobacter, strain designation TT134 [6-1-2, CIP 104 336], cat. 15955) which resulted in gall formation on five cannabis genotypes tested. These galls contained the iaaH gene as determined by PCR and the pathogen was successfully re-isolated on MacConkey agar medium at 4 and 10 weeks post-inoculation. 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Crown gall development on cannabis (Cannabis sativa L., marijuana) plants caused by Agrobacterium tumefaciens species-complex
Abstract Crown gall, caused by Agrobacterium tumefaciens (syn. Rhizobium radiobacter), is characterized by gall formation on crowns, stems or roots on many plant species. We describe the occurrence of this disease for the first time on cannabis (Cannabis sativa L. marijuana) plants in two licenced production facilities in British Columbia. Galls were observed on crowns, stems and roots of several genotypes, including ‘White Rhino’, ‘Pink Kush’ and ‘Sour Kush’. The affected plants displayed no other visible symptoms. The incidence of crown gall was extremely low, estimated at 0.01% of total plants. Isolations made from root and stem galls on MacConkey medium (selective for Gram -ve bacteria) and on D1 medium (selective for Agrobacterium spp.) yielded a range of bacterial species, which did not include Agrobacterium sp. However, the presence of Agrobacterium in gall tissues was confirmed following PCR amplification with primers for the indole-acetic acid (iaa) H gene on the T-DNA region of Agrobacterium spp. and showed > 99% similarity to A. tumefaciens. Artificial inoculations were conducted using an A. tumefaciens strain from ATCC (Rhizobium radiobacter, strain designation TT134 [6-1-2, CIP 104 336], cat. 15955) which resulted in gall formation on five cannabis genotypes tested. These galls contained the iaaH gene as determined by PCR and the pathogen was successfully re-isolated on MacConkey agar medium at 4 and 10 weeks post-inoculation. Our findings confirm the occurrence of A. tumefaciens on naturally infected and artificially infected cannabis plants grown under greenhouse conditions and demonstrate reproducible gall symptoms on several cannabis genotypes following A. tumefaciens inoculation.
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来源期刊
CiteScore
4.50
自引率
5.00%
发文量
56
审稿时长
6-12 weeks
期刊介绍: Canadian Journal of Plant Pathology is an international journal which publishes the results of scientific research and other information relevant to the discipline of plant pathology as review papers, research articles, notes and disease reports. Papers may be submitted in English or French and are subject to peer review. Research articles and notes include original research that contributes to the science of plant pathology or to the practice of plant pathology, including the diagnosis, estimation, prevention, and control of plant diseases. Notes are generally shorter in length and include more concise research results. Disease reports are brief, previously unpublished accounts of diseases occurring on a new host or geographic region. Review papers include mini-reviews, descriptions of emerging technologies, and full reviews on a topic of interest to readers, including symposium papers. These papers will be highlighted in each issue of the journal and require prior discussion with the Editor-in-Chief prior to submission.
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