Alternaria Diseases of Carrot

Farrar, J. J.; Pryor, Barry M.; Davis, Ryan A.

doi:10.1094/pdis.2004.88.8.776

Cited by 89 publications

(68 citation statements)

References 38 publications

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“…The main economic damage by the latter occurs during storage. A. radicina has also been reported to cause foliar blight on parsley, stalk/root rot of celery, and to be pathogenic on caraway, dill, fennel and parsnip (Farrar et al 2004). A. radicina is a producer of mycotoxins that adversely affect the germination of carrot seeds (Tylkowska et al 2003) but apparently do not present a hazard for consumers (Solfrizzo et al 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Commercial seed lots are frequently contaminated with one or both species (Maude 1966;Soteros 1979). The degree of infestation with A. radicina has been shown to reach very high levels, highlighting that contamination of carrot seeds with this pathogen is a continuing problem (Farrar et al 2004). Seeds that are moderately or heavily infested with A. radicina or A. dauci fail to germinate, or the hypcotyls of seedlings growing from infested seeds are infected at or just below the soil line, resulting in post emergence damping off within 2-3 weeks of emergence Strandberg 2002, Farrar et al 2004).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of non-chemical seed treatment methods for the control of Alternaria dauci and A. radicina on carrot seeds

Koch¹,

Schmitt²,

Stephan³

et al. 2010

Eur J Plant Pathol

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The current study was initiated to evaluate the efficacy of physical methods (hot water, aerated steam, electron treatment) and agents of natural origin (resistance inducers, plant derived products, microorganisms) as seed treatments of carrots for control of Alternaria dauci and A. radicina. Control of both Alternaria species by seed treatment with the resistance inducers was generally poor. Results were also Eur J Plant Pathol

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of non-chemical seed treatment methods for the control of Alternaria dauci and A. radicina on carrot seeds

Koch¹,

Schmitt²,

Stephan³

et al. 2010

Eur J Plant Pathol

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“…Takođe je u nekim slučajevima konstatovana i mešana infekcija A. radicina i A. dauci (Strandberg 2002). Ovako visok procent zaraze sa A. dauci može dovesti do jake epidemije koje mogu smanjiti prinos mrkve od 40% do 60% (Farrar et al 2004). A. radicina takođe ima izuzetan ekonomski značaj, pa su tako u Australiji zabeleženi gubici prinosa čak do 88% .…”

Section: Rezultati I Diskusijaunclassified

Isolation and detection of the fungi Alternaria dauci (Kühn) Groves et Skolk and Alternaria radicina Meier, Drechsler et Eddy from carrot seeds

Petrovic¹,

Ignjatov²,

Vujakovic³

et al. 2011

Ratar i povrt

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Izvod: Mrkva spada u veoma značajnu povrtarsku biljnu vrstu zbog svog sastava i sadržaja vitamina. Gljive koje pripadaju rodu Alternaria, naročito A. dauci (Kühn) Groves et Skolk, prouzrokovač lisne pegavosti i sušenja lista, i A. radicina Meier, Drechsler et Eddy, prouzrokovač crne truleži korena mrkve, mogu da ugroze celokupnu proizvodnju mrkve. Obe vrste se mogu u visokom procentu naći na semenu, ne samo mrkve, već i peršuna i celera. U cilju njihove detekcije preporučuje se metod fi lter papira i metod izolacije na hranljivoj podlozi (ISTA Rules). Ispitivanje prisustva A. dauci i A. radicina vršeno je na 12 uzoraka potencijalno zaraženog semena mrkve poreklom iz Francuske kao dela laboratorijskih kružnih testova. Procenat prisustva A. dauci metodom na fi lter papiru kretao se od 0% do 21%, dok je A. radicina bila prisutna od 1% do 30%. Na hranljivoj podlozi procenat prisustva A. dauci se kretao od 0% do 23% a A. radicina od 1% do 31%. Ključne reči: A. dauci, A. radicina, fi lter papir metod, metod izolacije na hranljivoj podlozi, mrkva, seme

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“…The use of fungicides is very often ineffective, and in addition some chemically synthesized fungicides can cause environmental pollution. Therefore, successful control of black rot has been difficult, costly, labor-and resource-intensive, depending on integration of the most appropriate methods for distinct carrot production regions (Tylkowska 1992;Pryor and Gilbertson 2001;Farrar et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Response of carrot protoplasts and protoplast-derived aggregates to selection using a fungal culture filtrate of Alternaria radicina

Grzebelus

Kruk

Macko-Podgórni

et al. 2013

Plant Cell Tiss Organ Cult

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Protoplasts isolated from three accessions of cultivated carrot and 5-day-old protoplast-derived aggregates were subjected to selection to identify somaclonal variants with enhanced tolerance to the fungal disease black rot incited by Alternaria radicina. Different concentrations [1, 2, 3.5, 5, 10, 20, 35 and 50 % (v/v)] of a fungal culture filtrate (FCF) from 2-week-old liquid cultures of A. radicina were used. Protoplasts and aggregates were subjected to short-term selection for a period of 10 days. All FCF concentrations added to the cultures on the day of isolation decreased protoplast survival frequency and plating efficiency, while FCF applied 5 days later inhibited cell divisions in 5-50 % concentrations. The responses of protoplasts to the treatment were genotype dependent. Most R0 plants were regenerated in all accessions from cell lines grown with 1 % FCF, while only a few plants were produced from 2 to 3.5 % FCF-treated cultures of 'Dolanka' and the breeding line '9304B', respectively. Nineteen-percent of putative stress-tolerant regenerants were tetraploids, while only 5 % tetraploids were observed in the control. The incidence of unique random amplified polymorphic DNA fragments indicating possible chromosomal rearrangements was low and did not differ among regenerants after selection and those derived from the control. Mobilization of miniature inverted repeat transposable elements was not observed. Some R0 individuals regenerated both from FCF-treated and untreated cultures showed lower susceptibility to A. radicina in a laboratory assay in comparison to control plants grown from seed. Regenerants from FCF-treated cultures showed lower frequency of flowering plants and a higher rate of male sterility. Pollen viability of the putative stress-tolerant regenerants varied over a wide range (6-98 %), independently of in vitro selection conditions. Our data suggest that A. radicina FCF may be feasible for the in vitro selection to generate plants with superior phenotypic performance against A. radicina.

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Alternaria Diseases of Carrot

Cited by 89 publications

References 38 publications

Evaluation of non-chemical seed treatment methods for the control of Alternaria dauci and A. radicina on carrot seeds

Evaluation of non-chemical seed treatment methods for the control of Alternaria dauci and A. radicina on carrot seeds

Isolation and detection of the fungi Alternaria dauci (Kühn) Groves et Skolk and Alternaria radicina Meier, Drechsler et Eddy from carrot seeds

Response of carrot protoplasts and protoplast-derived aggregates to selection using a fungal culture filtrate of Alternaria radicina

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