Flesh Color in Hybrids of Tomato

Lesley, J. W.; Lesley, Margaret Mann

doi:10.1093/oxfordjournals.jhered.a105742

Cited by 7 publications

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“…tives (Chmielewski, 1965;Lesley, 1943;Lesley, 1947;Miller & Tanksley, 1990;Rick, 1956;Ronen et al, 2000;Soost, 1956;Stommel, 2001). A number of vintage cultivars also contain high β-carotene, though the origin of this variation has not been described.…”

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confidence: 99%

Identification and assessment of alleles in the promoter of the Cyc‐B gene that modulate levels of β‐carotene in ripe tomato fruit

et al. 2021

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Novel diversity may be mined from databases and de novo sequencing, but functional characterization remains a limiting step to identifying new alleles. Classical breeding approaches augmented by marker‐assisted selection offer a means to rapidly assess the function of new variation in coding or regulatory regions to modulate traits. We used the Cyc‐B gene (B) of tomato (Solanum lycopersicum L.) for a proof of concept because of its role in the production of β‐carotene, a provitamin A carotenoid with importance to human nutrition. We measured carotenoid content in vintage and contemporary varieties and the profiles had a range of β‐carotene from 0.2 to 4.06 mg 100 g−1 fresh weight. We characterized variation in B from 84 sequences recovered from public databases and from an additional 29 high β‐carotene tomato, S. galapagense S. C. Darwin & Peralta, and S. cheesmaniae (L. Riley) Fosberg accessions. Thirteen unique haplotypes across 1600 bp of sequence 5′ to the first ATG were identified with 11 occurring in high β‐carotene accessions we sequenced, and additional haplotypes were identified in public data. Phylogenetic analysis suggested that the alleles in high β‐carotene varieties were derived from wild species. Association analysis suggested two single nucleotide polymorphisms (SNPs) as the most likely causes of high β‐carotene, presumably through their influence on transcription of B that is elevated in ripening fruit. A marker‐assisted backcross breeding scheme leveraging SNPs for background genome selection was used to rapidly develop germplasm resources containing different alleles of B in a uniform genetic background. Evaluation demonstrated that distinct promoter haplotypes function as different alleles that can be used to modulate the levels of β‐carotene in tomato.

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Section: Core Ideasmentioning

confidence: 99%

Identification and assessment of alleles in the promoter of the Cyc‐B gene that modulate levels of β‐carotene in ripe tomato fruit

et al. 2021

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“…LUCKWILL'S (1943) classification is very similar to that of MULLER except that LUCKWILL recognizes an additional species, L. pissisi, which in MULLER'S treatment is L. peruuianum var. humifusum.The wild species, especially L. hirsutum, were intensively studied for disease resistance by ALEXANDER (1942) ; PORTE, DOOLITTLE and WELLMAN (1939) ; KIKUTA and FRAZIER (1947) ; and for flesh color by LESLEY and LESLEY ( 1947). MACARTHUR and CHIASSON (1947) studied the crossing relations of L. esculentum with the rest of the species and made preliminary observations of meiosis in pollen-mother cells of the F, hybrids.In none of these, nor any other works, however, were segregating generations subjected to detailed genetical study, which is so important to breeding work.…”

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confidence: 99%

“…The wild species, especially L. hirsutum, were intensively studied for disease resistance by ALEXANDER (1942) ; PORTE, DOOLITTLE and WELLMAN (1939) ; KIKUTA and FRAZIER (1947) ; and for flesh color by LESLEY and LESLEY ( 1947). MACARTHUR and CHIASSON (1947) studied the crossing relations of L. esculentum with the rest of the species and made preliminary observations of meiosis in pollen-mother cells of the F, hybrids.…”

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CYTOGENETICS OF INTERSPECIFIC HYBRIDS, LYCOPERSICON ESCULENTUM MILL. x L. HIRSUTUM HUMB. AND BONPL

Sawant

1958

Genetics

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genus Lycopersicon has been divided by MULLER (1940) into two suba. Eulycopersicon, to which L. esculentum Mill. (cultivated tomato) and L. pimpinellifolium Mill. (currant tomato) belong. These species are redfruited and lack pseudostipules. b. Eriopersicon, to which L. peruuianum Mill., L. cheesmanii Riley, L. glandulosum C. H. Mull. and L. hirsutum Humb. & Bonpl. belong. These species are green-fruited and have pseudostipules. LUCKWILL'S (1943) classification is very similar to that of MULLER except that LUCKWILL recognizes an additional species, L. pissisi, which in MULLER'S treatment is L. peruuianum var. humifusum.The wild species, especially L. hirsutum, were intensively studied for disease resistance by ALEXANDER (1942) ; PORTE, DOOLITTLE and WELLMAN (1939) ; KIKUTA and FRAZIER (1947) ; and for flesh color by LESLEY and LESLEY ( 1947). MACARTHUR and CHIASSON (1947) studied the crossing relations of L. esculentum with the rest of the species and made preliminary observations of meiosis in pollen-mother cells of the F, hybrids.In none of these, nor any other works, however, were segregating generations subjected to detailed genetical study, which is so important to breeding work. TO understand the segregating generations it is necessary to study cytologically the chromosome behavior in the hybrid. These studies may furthermore contribute to our understanding of the cytotaxonomy and evolution of these species.With these objectives in mind the present project was undertaken to investigate the relationships between L. esculentum and two botanical forms of L. hirsutum. THE genera: MATERIALS A N D METHODSThe following stocks for these studies were provided by DR. CHARLES M. RICK.Line a. This is a line derived from the commercial variety San Marzano, with the marker genes Woolly ( W O ) , dwarf ( d ) and male-sterile,, (ms,,) , known to be linked on chromosome 2 (RICK and BUTLER 1956). Stocks of L. esculentum1 Part of a thesis submitted to the Graduate Division of the University of California in partid fulfillment of the requirements for the degree of Doctor of Philosophy in Genetics.

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Genetic aspects of some carotenoids synthesis in tomatoes

Chmielewski

Berger

1966

Plant Food Hum Nutr

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Flesh Color in Hybrids of Tomato

Cited by 7 publications

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Identification and assessment of alleles in the promoter of the Cyc‐B gene that modulate levels of β‐carotene in ripe tomato fruit

Identification and assessment of alleles in the promoter of the Cyc‐B gene that modulate levels of β‐carotene in ripe tomato fruit

CYTOGENETICS OF INTERSPECIFIC HYBRIDS, LYCOPERSICON ESCULENTUM MILL. x L. HIRSUTUM HUMB. AND BONPL

Genetic aspects of some carotenoids synthesis in tomatoes

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