Inheritance of Red Leaf Colour From Pear Red Sports of 'Doyenné Du Comice', 'Bartlett' and 'Beurré Hardy'

Lespinasse, Yves; Guérif, P.

doi:10.17660/actahortic.2011.909.9

Cited by 4 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A previous study 12 using 90 F1 seedlings of cross ‘Abbé Fétel’ × MRB, mapped the red fruit colour as a morphological marker on LG4 of MRB, which is consistent with results from this study. This dominant gene in MRB is also associated with the red foliage, and was named C, the Cardinal red colour gene 31,32 . In ‘Bayuehong’, a red-blushed cultivar derived from the European pear cultivar ‘Clapp’s Favorite’, a major QTL for red phenotype was mapped to LG5, and a gene PyMYB114 was identified within the QTL region 8,15 .…”

Section: Discussionmentioning

confidence: 99%

Fine-mapping and validation of the genomic region underpinning pear red skin colour

et al. 2019

View full text Add to dashboard Cite

Red skin colour is an important target trait in various pear breeding programmes. In this study, the genetic control of red skin colour was investigated in an interspecific population derived using the descendants of the red sport European pear cultivar ‘Max Red Bartlett’ (MRB) and the red-blushed Chinese pear cultivar ‘Huobali’. Approximately 550 seedlings from nine families were phenotyped for red skin over-colour coverage (Ocolcov) and the intensity of red over-colour (Ocolint) on a 0–9 scale, and genotyped using genotyping-by-sequencing. Genome-wide association analyses were conducted using 7500 high-quality single nucleotide polymorphisms (SNPs). Genomic regions on linkage groups (LG) 4 and 5 were found to be associated, and the best SNP (S578_25116) on LG4 accounted for ~15% of phenotypic variation in Ocolcov and Ocolint. The association of S578_25116 with Ocolcov and Ocolint was successfully validated in a sample of ~200 European and Asian pear accessions. The association with red skin at locus S578_25116 was not present in Asian pear accessions, suggesting its close proximity to the MRB’s Cardinal gene. Several putative candidate genes, including MYB transcription factors (PCP027962 and PCP027967), were identified in the quantitative trait locus region on LG4 and await functional validation.

show abstract

Section: Discussionmentioning

confidence: 99%

Fine-mapping and validation of the genomic region underpinning pear red skin colour

et al. 2019

View full text Add to dashboard Cite

show abstract

“…For oriental pear, especially Chinese sand pear (P. pyrifolia Nakai) and Chinese white pear (P. pyrifolia White Pear Group), red peel color is hard to obtain and is unstable in different regions and under different cultivation conditions [4][5][6] ; fully red-skinned cultivars are rare. Previous studies have shown that the developmental patterns of red coloration are different among plants and pear cultivation groups 1,7,8 , and it has been shown that the red color is a dominant characteristic and that the ratio of red-skinned fruits in progeny is 1:1 for the crosses between a yellow pear parent and heterozygous red pear parent 9,10 .…”

Section: Introductionmentioning

confidence: 99%

A 14 nucleotide deletion mutation in the coding region of the PpBBX24 gene is associated with the red skin of “Zaosu Red” pear (Pyrus pyrifolia White Pear Group): a deletion in the PpBBX24 gene is associated with the red skin of pear

Zhang

Wang

et al. 2020

Hortic Res

View full text Add to dashboard Cite

Red skin is an important quality trait for pear fruits and is determined by the concentration and composition of anthocyanins. The regulatory mechanism underlying anthocyanin accumulation is a popular topic in fruit research. Red mutants are ideal materials for studying the molecular mechanism of color diversity in pear. Although several red pear mutants have been cultivated and are in production, no exact locus containing the responsible genetic mutation has been identified. In this study, by combining the bulked segregant analysis with whole-genome sequencing, we identified a 14 nucleotide deletion mutation in the coding region of the PpBBX24 gene from the red pear mutant "Zaosu Red". We further verified that the deletion was present only in the red mutant of "Zaosu" and in its red offspring, which was different from that which occurred in other red pear fruits. This deletion results in a coding frame shift such that there is an early termination of the PpBBX24 gene and loss of key NLS and VP domains from PpBBX24. The lost domains may reduce or alter the normal function of PpBBX24. In addition, we found that the transcript levels of the PpMYB10 and PpHY5 genes in red samples were significantly higher than those in green samples, whereas the results for the normal-type PpBBX24 gene were the opposite. We ultimately revealed that the 14 nucleotide deletion mutation in the coding region of the PpBBX24 gene is associated with the red skin of the "Zaosu Red" pear. This finding of somatic mutational events will be helpful for breeding new red pear cultivars and for understanding the regulatory mechanisms involved in pear skin pigmentation.

show abstract

Inheritance of leaf and flower morphologies in Kalanchoe spp.

Huang

Chu

2016

Euphytica

View full text Add to dashboard Cite

Inheritance of Red Leaf Colour From Pear Red Sports of 'Doyenné Du Comice', 'Bartlett' and 'Beurré Hardy'

Cited by 4 publications

References 0 publications

Fine-mapping and validation of the genomic region underpinning pear red skin colour

Fine-mapping and validation of the genomic region underpinning pear red skin colour

A 14 nucleotide deletion mutation in the coding region of the PpBBX24 gene is associated with the red skin of “Zaosu Red” pear (Pyrus pyrifolia White Pear Group): a deletion in the PpBBX24 gene is associated with the red skin of pear

Inheritance of leaf and flower morphologies in Kalanchoe spp.

Contact Info

Product

Resources

About