The group focuses on investigating the genetic regulation of phenotypic diversity. The two main crop species that we work on are Brassica oleracea and B. rapa on the one hand, and potato at the other hand. In Brassica a main topic is to understand the enormous phenotypic diversity, ranging from cabbages to tuber forming and oilseed crops, and the role of the recent genome triplication in this. In potato, the main goal is to understand tuber development. The cloning of the earliness gene was a major break-through and is continued, with special attention to the role of external factors on tuberization.
In Brassica a main team is to understand the enormous phenotypic diversity, with in B. oleracea cauliflowers, cabbages, kohlrabi’s, Brussels sprouts and kale and in B. rapa a similar diversity in crops, ranging from Chinese cabbage and pakchoi to turnips and rapeseed. We develop core collections and biparental populations from crosses between different morphotypes for (association) mapping and resequence inbred lines, landraces and modern hybrids to search marks of domestication. This illustrated that the genome triplication shared by these Brassica species facilitated diversification and showed that subgenome parallel selection is associated with convergent domestication of the different crops. Key traits for investigation are leafy head formation of cabbages and tuber formation of turnips and kohlrabi’s. In addition both flowering time and leaf development, which are strictly related to diverse morphotypes, are studied. We also studied seed quality and variation in glucosinolates, both in planta but also the variation in degradation kinetics during food processing in collaboration with Food Scientists.
Potato tuberisation and the moment it occurs are very important in determining the final size distribution, number of tubers and total yield. Following on from the identification of an important regulator of tuberisation controlling potato life cycle published in Nature in 2013 and also additional research into the important role of hormones in this process. The research focus is on the interaction between the regulation of flowering and tuber formation in potato and the effects of environmental stress on potato tuberisation.
A Systems genetics approach identifies gene regulatory networks associated with fatty acid composition in brassica rapa seed
Plant Physiology 170 (2016)1. - ISSN 0032-0889 - p. 568 - 585.
Transcriptomic and proteomic analyses provide new insights into the regulation mechanism of low-temperature-induced leafy head formation in Chinese cabbage
Journal of Proteomics 144 (2016). - ISSN 1874-3919 - p. 1 - 10.
Regulating flower and tuber formation in potato with light spectrum and day length
Acta Horticulturae 1134 (2016). - ISSN 0567-7572 - p. 267 - 275.
Low Temperature Affects Stem Cell Maintenance in Brassica oleracea Seedlings
Frontiers in Plant Science 7 (2016). - ISSN 1664-462X
Cytogenetic diversity of simple sequences repeats in morphotypes of Brassica rapa ssp. Chinensis
Frontiers in Plant Science 7 (2016)JULY2016. - ISSN 1664-462X
Quantitative Trait Locus Analysis of seed germination and seedling vigour in Brassica rapa reveals QTL hotspots and epistatic interactions
Frontiers in Plant Science 6 (2015). - ISSN 1664-462X - 32 p.
Development of a leafy Brassica rapa fixed line collection for genetic diversity and population structure analysis
Molecular Breeding 35 (2015)1. - ISSN 1380-3743 - p. 54 - 54.
Making the difference: integrating structural variation detection tools
Briefings in Bioinformatics 16 (2015)5. - ISSN 1467-5463 - p. 852 - 864.
Homologues of potato chromosome 5 show variable collinearity in the euchromatin, but dramatic absence of synteny in the pericentromeric heterochromatin
BMC Genomics 16 (2015). - ISSN 1471-2164 - p. 374 - 374.
Karyotype variation and conservation in morphotypes of non-heading Chinese cabbage
Plant Systematics and Evolution 301 (2015)7. - ISSN 0378-2697 - p. 1781 - 1791.
- Sara Bergonzi
- José Abelenda
- Mina Jin
- Kristin Hennig
- Ram Kumar Basnet
- XiaoXue Sun