Allele dosage–dependent selection of recessive F3’H allele homozygote altered anthocyanin composition in sweetpotato
To change the major anthocyanin in the storage roots of sweetpotato ( Ipomoea batatas ) from purplish cyanidin derivatives to reddish pelargonidin derivatives, the dosage of a recessive allele in the F3 ’ H gene locus was enriched by successive crossing and allele dosage estimation. A putative reces...
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Published in | Molecular breeding Vol. 39; no. 10-11; pp. 1 - 11 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Dordrecht
Springer Netherlands
01.11.2019
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | To change the major anthocyanin in the storage roots of sweetpotato (
Ipomoea batatas
) from purplish cyanidin derivatives to reddish pelargonidin derivatives, the dosage of a recessive allele in the
F3
’
H
gene locus was enriched by successive crossing and allele dosage estimation. A putative recessive allele of the
F3
’
H
gene, named
f3
’
h
tm
, was found in the cultivar Tanegeshimamurasaki and contained a 57-bp deletion causing a premature stop codon. Starting with the parents having a simplex
f3
’
h
tm
allele, plants considered to be homozygous with
f3
’
h
tm
were obtained in the F
4
generation. The storage roots and other pigmented tissues of the homozygous plants showed a reddish color, whereas the original parents or F
4
plants without homozygous
f3
’
h
tm
were purplish. More than approximately 90% of the anthocyanins in the storage roots of plants with homozygous
f3
’
h
tm
were pelargonidin derivatives. These results suggest that allele dosage–dependent selection is also possible in autohexaploid crops to develop mutants with novel phenotypes. In addition, the obtained plants with homozygous
f3
’
h
tm
can be important materials for breeding sweetpotato cultivars for pelargonidin production. |
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ISSN: | 1380-3743 1572-9788 |
DOI: | 10.1007/s11032-019-1062-8 |