Diversity of Seed-Borne Bacterial Phytopathogens

Umesha, S.

doi:10.1007/978-981-32-9046-4_13

Cited by 4 publications

(3 citation statements)

References 37 publications

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“…Seed is always considered as major vehicle of pathogen dispersal in new geographical areas where it previously not found. Studies showed that even a small friction of seed infection could lead to crop epidemics (Shenge et al, 2010;Umesha, 2020). Therefore, Pseudomonas syringae presence at such a high percentage is looming threat to sustainable chilli production in Pakistan.…”

Section: Objectivesmentioning

confidence: 99%

Susceptibility of chilli selected cultivars to foliar and seed infecting bacteria

Jamshed,

Aziz,

Mukhtar

et al. 2023

World J. Biol. Biotechnol.

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Phytobacteria are potent threat to sustainable chilli (Capsicum annuum L.) production all over the world. In past, bacterial infections were reported in chilli plantations of Pakistan but data is still scanty and sporadic. Therefore, this study was planned to evaluate the chilli germplasm resistance against local putative bacterial isolates. Chilli infected disease samples were collected from Mianwali, Taxila, Chakwal, Islamabad and Rawalpindi during 2021-22. In addition, seeds of different chilli cultivars were also investigated for bacterial infection. In total, six putative isolates were obtained viz., GP, ISL, TAX, CM, and AAR from infected leaf samples while 1 (APO) from infected seeds. On basis of biochemical and pathogenicity assays, two putative isolates; GP (Xanthomonas vesicatoria) and APO (Pseudomonas syringae) isolates were screened for further analysis. Detached leaf and seedling inoculations assays showed that hot pepper and Gola Peshawari were found resistant against GP and APO respectively. Out of three cultivars (TAX, Sky Star, and Golden Hot), TAX cultivar showed resistance against GP isolate and Sky star show resistance against APO isolate in seedling inoculation assay. GP and APO isolates sensitivity against copper sulphate and antibiotics viz., erythromycin, penicillin, streptomycin and tetracycline was also assessed by gel diffusion and plate poisoning method respectively. It was observed that tetracycline and streptomycin were effective against GP and APO respectively while bacterial strains APO and GP showed resistance against copper sulphate. Our data showed that Xanthomonas vesicatoria and Pseudomonas syringae are prevailing in chilli field plantations and seeds. Chilli germplasm must be screened against these bacteria before cultivation to avoid future disease spread.

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Section: Objectivesmentioning

confidence: 99%

Susceptibility of chilli selected cultivars to foliar and seed infecting bacteria

Jamshed,

Aziz,

Mukhtar

et al. 2023

World J. Biol. Biotechnol.

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“…Seeds can carry a heavy load of microorganisms, which can cause severe diseases and be responsible for various negative effects on yield and the spread of pathogen inoculum in the soil. Seed movement is also the main cause of pathogenic spread across international borders and the introduction of diseases into previously unaffected areas or their re-emergence [1]. There are many examples of seedborne pathogens that have spread globally, some of which can cause devastating diseases in some of the most important staple crops.…”

Section: Introductionmentioning

confidence: 99%

“…1 Natural contamination; 2 artificial inoculation; * soil contamination; EO = essential oil; WE = water extract.…”

mentioning

confidence: 99%

Basic Substances and Potential Basic Substances: Key Compounds for a Sustainable Management of Seedborne Pathogens

Orzali,

Allagui,

Chaves-Lopez

et al. 2023

Horticulturae

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Seedborne pathogens represent a critical issue for successful agricultural production worldwide. Seed treatment with plant protection products constitutes one of the first options useful for reducing seed infection or contamination and preventing disease spread. Basic substances are active, non-toxic substances already approved and sold in the EU for other purposes, e.g., as foodstuff or cosmetics, but they can also have a significant role in plant protection as ecofriendly, safe, and ecological alternatives to synthetic pesticides. Basic substances are regulated in the EU according to criteria presented in Article 23 of Regulation (EC) No 1107/2009. Twenty-four basic substances are currently approved in the EU and some of them such as chitosan, chitosan hydrochloride, vinegar, mustard seed powder, and hydrogen peroxide have been investigated as seed treatment products due to their proven activity against fungal, bacterial, and viral seedborne pathogens. Another basic substance, sodium hypochlorite, is under evaluation and may be approved soon for seed decontamination. Potential basic substances such as essential oils, plant extracts, and ozone were currently found effective as a seed treatment for disease management, although they are not yet approved as basic substances. The aim of this review, run within the Euphresco BasicS project, is to collect the recent information on the applications of basic substances and potential basic substances for seed treatment and describe the latest advanced research to find the best application methods for seed coating and make this large amount of published research results more manageable for consultation and use.

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A viability qPCR protocol to assess the efficacy of a heat treatment to sanitize carrot seeds from Candidatus Liberibacter solanacearum

Othmen

Nibali²,

Cassanelli³

et al. 2023

Eur J Plant Pathol

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Diversity of Seed-Borne Bacterial Phytopathogens

Cited by 4 publications

References 37 publications

Susceptibility of chilli selected cultivars to foliar and seed infecting bacteria

Susceptibility of chilli selected cultivars to foliar and seed infecting bacteria

Basic Substances and Potential Basic Substances: Key Compounds for a Sustainable Management of Seedborne Pathogens

A viability qPCR protocol to assess the efficacy of a heat treatment to sanitize carrot seeds from Candidatus Liberibacter solanacearum

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