Pseudomonas syringae pv. lachrymans
cucurbit angular leaf spot
Bacillus lachrymans, Bacterium burgeri, Bacterium lachrymans, Chlorobacter lachrymans, Phytomonas lachrymans, Pseudomonas burgeri, Pseudomonas lachrymans, Pseudomonas lachrymans f. cucumis
Africa: Algeria, Egypt, Gabon, Kenya, South Africa, Zimbabwe; Asia: China, India, Israel, Japan, Jordan, Kazakhstan, Laos, North Korea, Philippines, South Korea, Tajikistan, Thailand, Turkey, Uzbekistan; Europe: Australia, Belarus, Bulgaria, Czechia, Denmark, France, Germany, Greece, Hungary, Italy, Moldova, Netherlands, Romania, Russia, Slovakia, Switzerland, Ukraine, UK; North America: Canada, Guadeloupe, Martinique, Nicaragua, Puerto Rico, Trinidad and Tobago, USA: Oceania: Australia, New Zealand; South America: Argentina, Brazil, Colombia, Venezuela.
Widespread
2024-10-16
bacterium
MX
Main: Cucurbitaceae family
PSDMLA
This pathogen occurs in MX
4 Known Hosts
Citrullus lanatus
watermelon
uncertain
PSDMLA-2, CABI CPC, ISF RPLD, PSDMLA-5, PSDMLA-7, PSDMLA-10
Watermelon is a host of this pathogen. No evidence of seed as a pathway was found. Often inferred as seed-borne because it is seed-borne in cucumber.
2024-10-16 13:33:04
Ohuchi A, Hayashi N, Sakai Y, Ezuka A, 1980. Bacteriological properties and pathogenicity of Pseudomonas lachrymans, the causal agent of angular leaf spot of cucumber, from Japan. Bulletin of the National Institute of Agricultural Sciences, C, No.34:1-13
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon Switzerland
Shila, S. J., Islam, M. R., Ahmed, N. N., Dastogeer, K. M. G., & Meah, M. B. (2013). Detection of Pseudomonas syringae pv. lachrymans associated with the seeds of cucurbits. Universal Journal of Agricultural Research, 1(1), 1-8.
Kritzman G, Zutra D, 1983. Systemic movement of Pseudomonas syringae pv. lachrymans in the stem, leaves, fruits, and seeds of cucumber. Canadian Journal of Plant Pathology, 5(4):273-278
Leben C, 1981. Survival of Pseudomonas syringae pv. lachrymans with cucumber seed. Canadian Journal of Plant Pathology, 3(4):247-249
Cucumis melo
melon
uncertain
PSDMLA-2, CABI CPC, ISF RPLD, PSDMLA-5, PSDMLA-6
Some melons can be a host of this pathogen. No evidence of seed as a pathway found. Often inferred as seed borne because it is seedborne in cucumber.
2024-10-16 13:34:38
Ohuchi A, Hayashi N, Sakai Y, Ezuka A, 1980. Bacteriological properties and pathogenicity of Pseudomonas lachrymans, the causal agent of angular leaf spot of cucumber, from Japan. Bulletin of the National Institute of Agricultural Sciences, C, No.34:1-13
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon Switzerland
Shila, S. J., Islam, M. R., Ahmed, N. N., Dastogeer, K. M. G., & Meah, M. B. (2013). Detection of Pseudomonas syringae pv. lachrymans associated with the seeds of cucurbits. Universal Journal of Agricultural Research, 1(1), 1-8.
Atlas de Gotuzzo E, 1976. Angular spot of cucurbits in Argentina. Fitopatologia, 11(1):41-46
Cucumis sativus
cucumber
Yes
PSDMLA-2, PSDMLA-4, CABI CPC, ISF RPLD, PSDMLA-5, PSDMLA-6, PSDMLA-8, PSDMLA-9, PSDMLA-10
Cucumber seed as a pathway has been established and is accepted.
Yes
Culture plate, SDS-PAGE electrophoresis
These methods have not been validated or standardized. Commercial testing is available.
PSDMLA-3, PSDMLA-10, PSDMLA-12
Chemical, cultural
Various seed treatments and disinfectants have been used with varying success. Fermintation during seed harvest also decreases seed contamination.
CABI CPC, PSDMLA-7
2024-10-16 13:45:54
Ohuchi A, Hayashi N, Sakai Y, Ezuka A, 1980. Bacteriological properties and pathogenicity of Pseudomonas lachrymans, the causal agent of angular leaf spot of cucumber, from Japan. Bulletin of the National Institute of Agricultural Sciences, C, No.34:1-13
Komoto Y, Kimura T, 1983. The process of seed transmission in angular leaf spot of cucumber. Bulletin of the Chugoku National Agricultural Experiment Station, E, No.21:1-20
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon Switzerland
Shila, S. J., Islam, M. R., Ahmed, N. N., Dastogeer, K. M. G., & Meah, M. B. (2013). Detection of Pseudomonas syringae pv. lachrymans associated with the seeds of cucurbits. Universal Journal of Agricultural Research, 1(1), 1-8.
Atlas de Gotuzzo E, 1976. Angular spot of cucurbits in Argentina. Fitopatologia, 11(1):41-46
Umekawa M, Watanabe Y, 1978. Dry heat and hot water treatments of cucumber seeds for control of angular leaf spot. Bulletin of the Vegetable and Ornamental Crops Research Station, B (Morioka, Iwate), No. 2:55-61
Kutova I, Filipova N, 1977. Effect of seed treatment with some trace elements and antibiotics on infection by Ps. lachrymans on cucumber. B"lg. Plod., Zelench. i Konservi, No.3:30-32
Leben C, 1981. Survival of Pseudomonas syringae pv. lachrymans with cucumber seed. Canadian Journal of Plant Pathology, 3(4):247-249
Moura AB, Romeiro RS, 1993. Detection and quantification of Pseudomonas syringae pv. lachrymans in cucumber seeds lots. Revista Brasileira de Sementes, 15:183-186
Scortichini, M. (1992). Occurrence of Pseudomonas syringae pv. lachrymans in imported commercial black zucchini squash seeds. Informatore Fitopatologico, 42 (11), 55-58.
Kritzman G, Zutra D, 1983. Systemic movement of Pseudomonas syringae pv. lachrymans in the stem, leaves, fruits, and seeds of cucumber. Canadian Journal of Plant Pathology, 5(4):273-278
Cucurbita spp.
squash, pumpkin, gourd
uncertain
PSDMLA-2, CABI CPC, ISF RPLD, PSDMLA-7, PSDMLA-8, PSDMLA-12
Squash, pumpkin and gourd maybe hosts of this pathogen, but usually are resistant to infection. Pseudomonas lachyrmans was isolated from one squash variety involved in a disease outbreak in Italy (PSDLMA-7). Article needs translation to verify methods. No evidence of seed as a pathway found. Often inferred as seed borne because it is seedborne in cucumber.
2024-10-16 13:36:48
Ohuchi A, Hayashi N, Sakai Y, Ezuka A, 1980. Bacteriological properties and pathogenicity of Pseudomonas lachrymans, the causal agent of angular leaf spot of cucumber, from Japan. Bulletin of the National Institute of Agricultural Sciences, C, No.34:1-13
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon Switzerland
Kritzman G, Zutra D, 1983. Systemic movement of Pseudomonas syringae pv. lachrymans in the stem, leaves, fruits, and seeds of cucumber. Canadian Journal of Plant Pathology, 5(4):273-278
Umekawa M, Watanabe Y, 1978. Dry heat and hot water treatments of cucumber seeds for control of angular leaf spot. Bulletin of the Vegetable and Ornamental Crops Research Station, B (Morioka, Iwate), No. 2:55-61
Scortichini, M. (1992). Occurrence of Pseudomonas syringae pv. lachrymans in imported commercial black zucchini squash seeds. Informatore Fitopatologico, 42 (11), 55-58.
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