<i>Pseudomonas syringae</i> pv. <i>syringae</i> as the new causal agent of cabbage leaf blight

Basavand, Esmaeil; Khodaygan, Pejman; Rahimian, H.; Babaeizad, Valiollah; Mirhosseini, Hossein Ali

doi:10.1111/jph.12982

Cited by 4 publications

(4 citation statements)

References 35 publications

(40 reference statements)

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“…All bacterial isolates belonged to Pss, previously reported as the causal agent of bacterial canker of many plants, including stone fruits, pear, quince, almond, olive, rose, malva and pelargonium, or causing red streak of sugarcane, blast of mandarin and leaf blight of wheat, rice, oat, barley and cabbage from different areas of Iran (Bahar et al, 1982;Banapour et al, 1990;Rahimian, 1995;Najafi Pour and Taghavi, 2011;Aeini and Khodakaramian, 2018;Khezri and Mohammadi, 2018;Vasebi et al, 2019;Basavand et al, 2021). Genomic fingerprinting analyses, including REP-, BOX-and IS50-PCR showed some levels of variability among the Pseudomonas strains.…”

Section: Discussionmentioning

confidence: 99%

“…In Iran, Pss strains were isolated and characterized as causal agents of bacterial canker of stone fruit hosts (cherry, peach, apricot), almond, olive, rose, mallow, pelargonium, pear, and quince, red streak of sugarcane, blast of mandarin, and leaf blight of wheat, rice, oat, barley, and cabbage, from different areas (Bahar et al, 1982;Banapour et al, 1990;Rahimian, 1995;Najafi Pour and Taghavi, 2011;Aeini and Khodakaramian, 2018;Khezri and Mohammadi, 2018;Vasebi et al, 2019;Basavand et al, 2021). Japanese quince trees showing sunken brown cankers were observed in the Sari county during the 2016 growing season.…”

Section: Introductionmentioning

confidence: 99%

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Pseudomonas syringae pv. syringae causes bacterial canker on Japanese quince (Chaenomeles japonica)

ALLAHVERDIPOUR

Rastgou

Rahimian

et al. 2022

Phytopathol. Mediterr.

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Japanese quince trees are grown as ornamental plants in Iran, in parks and in orchards close to stone fruit and pome fruit trees. Shoots of Japanese quince (Chaenomeles japonica) showing sunken brown canker symptoms were observed and collected near Sari, the center of Mazandaran province in the North of Iran, during the 2016 growing season. Gram negative bacteria isolated from symptomatic tissues were similar to Pseudomonas syringae pv. syringae (Pss) were pathogenic on Japanese quince and on quince (Cydonia oblonga) seedlings after artificial inoculation, and were re-isolated from diseased hosts. Phylogenetic tree construction using partial sequences of ITS and rpoD genes showed that the Japanese quince isolates were in the same clade as Pss strains. The isolates had ice nucleation activity, and the InaK gene was amplified successfully. According to the results of phenotypic and genotypic characteristics, genomic DNA fingerprinting using REP-PCR, BOX-PCR and IS50-PCR and isolation of total cell proteins, we conclude that Pss is the causal agent of canker of the Japanese quince trees. Therefore, Japanese quince is a new host for Pss causing bacterial canker on many different host plants.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pseudomonas syringae pv. syringae causes bacterial canker on Japanese quince (Chaenomeles japonica)

ALLAHVERDIPOUR

Rastgou

Rahimian

et al. 2022

Phytopathol. Mediterr.

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“…Sequencing of the 16S rRNA gene is considered as a standard and simple method for the description of bacterial taxa (Basavand et al 2021b). The analysis of 16S rRNA sequence showed that strain P1 was 99% similar to A. radiobacter, which is in agreement with the results of the biochemical and physiological tests.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Agrobacterium radiobacter, a new pathogen of pistachio

Basavand

Khodaygan

Moradi

et al. 2022

Australasian Plant Pathol.

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Crown and stem gall caused by agrobacterial species is one of the most devastating diseases on different crops worldwide. In spring 2018, an alert concerning a disease forming galls on seedlings of pistachio in nurseries was received from Rafsanjan county, Kerman province, Iran. After isolation of bacteria from the galls by using conventional bacteriological methods, bacterial colonies were purified and selected for further analyses including biochemical, pathogenicity and molecular tests. Pathogenicity tests of all isolates on test plants and carrot discs were evaluated positive. Based on the results of biochemical and pathogenicity tests, supported by molecular phylogenies of housekeeping and pathogenicity genes, the isolates were identified as Agrobacterium radiobacter. Since agrobacteria could be easily spread through seedlings and agricultural materials between different areas, the identified Agrobacterium strains could be considered as a latent threat to the pistachio nurseries of Iran. The present study is the first report on the occurrence of crown and stem gall on pistachio caused by A. radiobacter worldwide.

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“…Dark brown, water soaked, angular to irregular spots on fruit and leaves were observed in the spring of 2016 in two pomegranate orchards in Behshahr county, Mazandaran province, Iran. Yellow bacterial colonies were consistently isolated on nutrient agar from infected fruit and leaves (Basavand et al 2021). All five strains were characterized as gram negative, oxidase negative, catalase positive, anaerobic, and geranium (Pelargonium × hortorum) hypersensitivity positive (HR).…”

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confidence: 99%