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 Phylogenetic Analysis of Chloroplast Genomes Elucidates the Relationships of the Six Economically Important Brassica Species Comprising the Triangle of U
Frontiers in Plant Science 8 (2017). - ISSN 1664-462X
Genome-wide analysis of auxin transport genes identifies the hormone responsive patterns associated with leafy head formation in Chinese cabbage
Scientific Reports 7 (2017). - ISSN 2045-2322 - p. 42229 - 42229.
U in Brassica Research
Splicing-related genes are alternatively spliced upon changes in ambient temperatures in plants
PLoS One 12 (2017)3. - ISSN 1932-6203
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.
Cytogenetic diversity of simple sequences repeats in morphotypes of Brassica rapa ssp. Chinensis
Frontiers in Plant Science 7 (2016)JULY2016. - ISSN 1664-462X
Subgenome parallel selection is associated with morphotype diversification and convergent crop domestication in Brassica rapa and Brassica oleracea
Nature Genetics 48 (2016)10. - ISSN 1061-4036 - p. 1218 - 1224.
You say tomato, I say potato: high-quality genome assembly of the sister-group species Solanum etuberosum provides insights into genome and trait evolution
Microspore induced doubled haploids production from ethyl methanesulfonate (EMS) soaked flower buds is an efficient strategy for mutagenesis in Chinese cabbage
Frontiers in Plant Science 7 (2016). - ISSN 1664-462X - 9 p.
- Sara Bergonzi
- José Abelenda
- Mina Jin
- Kristin Hennig
- Ram Kumar Basnet
- XiaoXue Sun