Inheritance of pollen enzymes and polyploid origin of apple (Malus x domestica Borkh.)

Chevreau, Elisabeth; Lespinasse, Yves; Gallet, M.

doi:10.1007/bf00252066

Cited by 65 publications

(44 citation statements)

References 14 publications

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“…The origin of Maloieae has been discussed extensively (Sax 1933;Challice 1974Challice , 1981Phipps et al 1991). Evidence from isozyme analyses of apples supports an allopolyploid origin (Chevreau et al 1985;Weeden and Lamb 1987). Recently, phylogenetic analysis of Maloideae species based on DNA sequences for the granule-bound starch synthase gene apparently demonstrated their polyploid origin (Evans and Campbell 2002).…”

Section: Resultsmentioning

confidence: 91%

Isolation of LEAFY and TERMINAL FLOWER 1 homologues from six fruit tree species in the subfamily Maloideae of the Rosaceae

2005

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Flowering is an essential stage of fruit production. To understand the molecular mechanisms controlling flowering in maloid fruit tree species, we isolated and analyzed genes homologous to Arabidopsis LEAFY (LFY; flower meristem identity gene) and TERMINAL FLOWER 1 (TFL1; inflorescence meristem identity gene) from six fruit tree species in the subfamily Maloideae of the Rosaceae; apple (Malus · domestica), Japanese pear (Pyrus pyrifolia), European pear (Pyrus communis), quince (Cydonia oblonga), Chinese quince (Chaenomeles sinensis), and loquat (Eriobotrya japonica). Two LFY homologues and two TFL1 homologues were cloned from all six maloid species by rapid amplification of 3¢ and 5¢ cDNA ends, reverse transcription-PCR, and PCR with genomic DNA. Phylogenetic analysis by the neighbor-joining method showed that the two LFY homologues and two TFL1 homologues were classified into two distinct clades. The presence of multiple copies of LFY and TFL1 homologues is discussed with reference to the polyploid origin of the subfamily Maloideae.

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Section: Resultsmentioning

confidence: 91%

Isolation of LEAFY and TERMINAL FLOWER 1 homologues from six fruit tree species in the subfamily Maloideae of the Rosaceae

2005

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“…PGD is generally coded by two loci (see Gottlieb, 1982, for review), and the formation of heterodimeric compounds has been mentioned in maize (Goodman et al, 1980b). The duplicated origin of PGI genes was previously mentioned in several genera (Gottlieb, 1977;Second & Trouslot, 1980;Chevreau et al, 1985;Goldring et al, 1985;Martinez Zapater & Oliver, 1985).…”

Section: Discussionmentioning

confidence: 99%

Heredity of seventeen isozyme loci in cassava (Manihot esculenta Crantz)

Lefèvre

Charrier²

1992

Euphytica

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Starch gel electrophoresis was used to assess isozyme polymorphism in two Manihot species. Crude extracts were obtained from leaves and pollen. Ten enzymes were examined for their polymorphism in a germplasm collection of 365 cultivated plus 109 wild accessions, mainly from Africa. The inheritance of these enzymes was examined using 13 intra and interspecific progenies. Seventeen polymorphic loci were found for the ten enzyme systems, with 59 alleles. All the markers showed disomic heredity and three linkage groups were identified.

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“…The apple is self-incompatible and highly heterozygous diploid with a base chromosome number of 17. Although the apple is a diploid (2n = 34), it has an allopolyploid origin (Chevreau et al 1985). The apple is not only a major economic fruit crop grown world-wide, but also serves as an important model species for functional genomics research of woody perennial angiosperms due to its relative small genome size of 750 Mb/haploid (Tatum et al 2005).…”

Section: Introductionmentioning

confidence: 99%

An overview of the apple genome through BAC end sequence analysis

Han

Korban

2008

Plant Mol Biol

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The apple, Malus x domestica Borkh., is one of the most important fruit trees grown worldwide. A bacterial artificial chromosome (BAC)-based physical map of the apple genome has been recently constructed. Based on this physical map, a total of approximately 2,100 clones from different contigs (overlapping BAC clones) have been selected and sequenced at both ends, generating 3,744 high-quality BAC end sequences (BESs) including 1,717 BAC end pairs. Approximately 8.5% of BESs contain simple sequence repeats (SSRs), most of which are AT/TA dimer repeats. Potential transposable elements are identified in approximately 21% of BESs, and most of these elements are retrotransposons. About 11% of BESs have homology to the Arabidopsis protein database. The matched proteins cover a broad range of categories. The average GC content of the predicted coding regions of BESs is 42.4%; while, that of the whole BESs is 39%. A small number of BES pairs were mapped to neighboring chromosome regions of A. thaliana and Populus trichocarpa; whereas, no pairs are mapped to the Oryza sativa genome. The apple has a higher degree of synteny with the closely related Populus than with the distantly related Arabidopsis. BAC end sequencing can be used to anchor a small proportion of the apple genome to the Populus and possibly to the Arabidopsis genomes.

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Inheritance of pollen enzymes and polyploid origin of apple (Malus x domestica Borkh.)

Cited by 65 publications

References 14 publications

Isolation of LEAFY and TERMINAL FLOWER 1 homologues from six fruit tree species in the subfamily Maloideae of the Rosaceae

Isolation of LEAFY and TERMINAL FLOWER 1 homologues from six fruit tree species in the subfamily Maloideae of the Rosaceae

Heredity of seventeen isozyme loci in cassava (Manihot esculenta Crantz)

An overview of the apple genome through BAC end sequence analysis

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