Sources of resistance in tomato to<i>Septoria lycopersici</i>Speg.

Сотирова, В.; Rodeva, R.

doi:10.1080/03235409009439009

Cited by 3 publications

(4 citation statements)

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“…In addition, interspecific progenies between S. lycopersicum and S. chilense LA-1967 have been obtained and the resistance to S. lycopersici could be incorporated into elite lines using this germplasm (Santana et al, 2001). Accessions with resistance factors to S. lycopersici seem to be more common within the S. peruvianum when compared with other wild species of the section Lycopersicon, confirming the results of previous screening works (Alexander et al, 1942;Alexander, 1959;Kurozawa and Balmer, 1977;Sotirova and Rodeva, 1990). In the present work, seven out of the ten highly resistant accessions were S. peruvianum Sponner et al, 2005).…”

Section: Resultssupporting

confidence: 91%

“…The availability of these fertile, interspecific inbred lines opens the possibility of further genetic studies in order to identify the genetic factors associated with S. lycopersici resistance derived from S. peruvianum. So far, such studies have been conducted only with S. pimpinellifolium and S. habrochaites accessions (Barksdale and Stoner, 1978;Barksdale 1982;Maluf et al, 1985;Sotirova and Rodeva, 1990;Tu and Poysa, 1990).…”

Section: Resultsmentioning

confidence: 99%

“…Wettst.) ] evaluated under either field conditions with natural inoculum (Barksdale, 1982;Maluf et al, 1985;Poysa & Tu, 1993) or under controlled greenhouse conditions using spore suspensions (Locke, 1949;Kurozawa & Balmer, 1977;Barksdale & Stoner, 1978;Sotirova & Rodeva, 1990;Moretto & Barreto, 1993). Sources of resistance due to the presence of putative single dominant genes have been identified in accessions of S. lycopersicum 'Targinnie Red' (= LA-1800) (Andrus & Reynard, 1945) and S. pimpinellifolium PI-422397 (Barksdale & Stoner, 1978).…”

Section: Introductionmentioning

confidence: 99%

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Resistance to Septoria lycopersici in Solanum (section Lycopersicon) species and in progenies of S. lycopersicum × S. peruvianum

Satelis

Boiteux

Reis

2010

Sci. agric. (Piracicaba, Braz.)

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Septoria leaf spot (Septoria lycopersici) is one of the major fungal diseases of tomatoes (Solanum lycopersicum) in tropical and subtropical regions with humid climates and/or in areas cultivated under sprinkler irrigation systems. Sources of resistance have been found in accessions of Solanum (section Lycopersicon) species. However, many of the described sources are not effective under Brazilian conditions. The objective of this work was to evaluate wild and cultivated Solanum (section Lycopersicon) germplasm to S. lycopersici isolates. A collection of 124 accessions was initially evaluated under greenhouse conditions. Ten accessions were highly resistance (HR), whereas 33 were classified as having a resistant (R) response to S. lycopersici isolates. Field evaluation was also conducted with a sub-set of accessions identified as either HR or R in the greenhouse experiment. This field evaluation confirmed greenhouse tests and indicated the presence of some potential sources of rate-reducing resistance. One highly resistant and eight resistant S. habrochaites accessions were identified as being resistant under both conditions, confirming that this wild species is one of the most promising sources of resistance to S. lycopersici. Five new sources with high levels of resistance were found in S. peruvianum accessions (PI-306811, CNPH-1036, LA-1910, LA-1984 and LA-2744. One accession derived from an interspecific cross between S. lycopersicum and S. peruvianum was also found to be highly resistant and might be useful to introgress resistance factors from this wild species into cultivated tomato germplasm. However, additional breeding efforts will be necessary to introgress into the cultivated tomato the resistance factors identified in other S. peruvianum accessions due to the presence of natural crossing barriers between the two species. Key words: breeding, disease control, septoria leaf spot Resistência a Septoria lycopersici em espécies de Solanum (Secção Lycopersicon) e em progênies de S. lycopersicum × S. peruvianum RESUMO: A mancha-de-septória (Septoria lycopersici) é importante doença fúngica do tomateiro (Solanum lycopersicum) em áreas tropicais e subtropicais com alta umidade ou quando esta hortaliça é cultivada sob irrigação por aspersão. Fontes de resistência têm sido encontradas em germoplasma de Solanum (secção Lycopersicon). No entanto, muitas das fontes descritas não funcionam nas condições brasileiras. Avaliou-se uma coleção de germoplasma de tomate cultivado e selvagem (Solanum secção Lycopersicon) visando identificar novas fontes de elevada resistência. Uma coleção de 124 acessos foi inicialmente avaliada sob condições de casa de vegetação. Somente dez acessos foram classificados como altamente resistentes e 33 foram classificados como resistentes. Um ensaio de campo foi também conduzido com um subconjunto de acessos promissores identificados no primeiro experimento. Foi confirmada a resposta da maioria dos acessos avaliados em casa de vegetação e indicou a presença de fontes de resistênci...

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Resistance to Septoria lycopersici in Solanum (section Lycopersicon) species and in progenies of S. lycopersicum × S. peruvianum

Satelis

Boiteux

Reis

2010

Sci. agric. (Piracicaba, Braz.)

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“…It is a potential source for a number of distinct genetic characters important to tomato breeding. According to Rick & Lamm (1955), L. chilense carries disease resistance similar to that of other wild Lycopersicon species, including resistance to brown root rot, Septoria leaf spot, tobacco mosaic virus and curly top virus (Alexander 1971;Stevens & Rick 1985;Sotirova & Rodeva 1990). Some accessions are also tolerant to low temperature and drought (Steven & Rick 1985;Holle et al 1978).…”

Section: Introductionmentioning

confidence: 99%

Plant regeneration from protoplasts isolated from cell suspension cultures of the wild tomato, Lycopersicon chilense Dun.

Latif

Mumtaz

Davey

et al. 1993

Plant Cell Tiss Organ Cult

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A protocol has been established for rapid, high frequency plant regeneration from protoplasts of the wild tomato species Lycopersicon chilense Dun. Cell suspension cultures were obtained from calli initiated from seedling stem explants. Protoplasts were isolated from cell suspensions by an overnight one-step enzyme digestion, purified by washing in salts solution and cultured in liquid medium. Dilution of liquid medium every 3 days, with medium containing low levels of growth regulators and sucrose, was critical for sustained colony formation. Up to 70% of protoplast-derived calli regenerated shoots when cultured on agar-solidified medium with Murashige & Skoog (1962) salts and vitamins, 2.0 mg 1-1 zeatin and 0.1 mgl -~ indole acetic acid for 21 days, followed by transfer to the same medium lacking indole acetic acid.

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Molecular Markers for Septoria Leaf Spot (Septoria lycopersicii Speg.) Resistance in Tomato (Solanum lycopersicum L.)

et al. 2015

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Marker assisted selection (MAS) has not been initiated in tomato (Solanum lycopersicum L.) for septoria leaf spot (SLS) resistance caused by Septoria lycopersici Speg due to lack of molecular markers. We studied the inheritance of SLS resistance and identified molecular markers linked to SLS resistance using bulked segregant analysis (BSA) in a segregating F2 population. Tomato inbred lines, NC 85L-1W (2007), susceptible to SLS and NC 839-2(2007)-1, resistant to SLS were used to develop the segregating population. A total of 250 F2 plants, and 10 plants each of P1, P2 and F1 were grown at the Mountain Horticultural Crops Research and Extension Center (MHCREC), Mills River NC in the summer of 2009. Disease severity was scored using a scale of 0 to 5, where 0 = no disease and 5 = complete development of disease. DNA was extracted from 2-3 week old plants and parental lines were screened with a total of 197 random amplified polymorphic DNA (RAPD) primers, of which 34 were polymorphic. Two DNA bulks, called resistant bulk (RB) and susceptible bulk (SB) were prepared from the F2 individuals. The RB and SB consisted of 8 individuals each with disease scores of 0, and 4.0 or 4.5, respectively. The segregation ratio of resistant and susceptible plants in F2 generation fit the expected Mendelian ratio of 3:1 for a single dominant gene. Five RAPD markers were linked to the SLS disease reaction, of which two were linked to susceptibility and three to the resistance. Subject to verification in independent populations, these markers may be useful for MAS of SLS resistance in tomato.Nepal Journal of Biotechnology. Dec. 2015 Vol. 3, No. 1: 40-47

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Sources of resistance in tomato toSeptoria lycopersiciSpeg.

Cited by 3 publications

References 2 publications

Resistance to Septoria lycopersici in Solanum (section Lycopersicon) species and in progenies of S. lycopersicum × S. peruvianum

Resistance to Septoria lycopersici in Solanum (section Lycopersicon) species and in progenies of S. lycopersicum × S. peruvianum

Plant regeneration from protoplasts isolated from cell suspension cultures of the wild tomato, Lycopersicon chilense Dun.

Molecular Markers for Septoria Leaf Spot (Septoria lycopersicii Speg.) Resistance in Tomato (Solanum lycopersicum L.)

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