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Abiotic stress response

Abiotic stresses like drought, heat, cold and salt stress are major factors limiting plant production worldwide. With the progress of climate change, the severity and variation of these stresses will increase.



Molecular interactions in the rhizosphere of maize

The rhizosphere is the narrow region of soil surrounding plant roots. Roots extract nutrients and water from their soil environment and secrete exudates to the rhizosphere.   more



Heterosis describes the superior performance of heterozygous hybrids compared to their genetically diverse parental inbred lines. Heterosis is extensively exploited in agriculture for more than 100 years. Nevertheless, the underlying molecular basis remains largely enigmatic.   more


Reverse genetic resources

Genome-wide insertional mutagenesis is a tool to create loss-of-function mutations for virtually all genes in a genome. In maize, Mutator transposons are one system used to generate insertional mutations. Sequence indexed collections of Mutator induced maize mutants are used for reverse and forward genetics experiments to identify and characterize novel mutants.


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Root architecture

Although hidden in the ground and therefore often neglected, roots are important plant organs: they serve as anchorage, take up water and nutrients and interact with microbes in the soil.   more


Gene im Dornröschenschlaf

von der Arbeitsgruppe Crop Functional Genomics von Prof. Dr. Frank Hochholdinger erforscht an Mais „springende Gene“. (© Foto:  Volker Lannert / Uni Bonn)

Wissenschaftlerinnen und Wissenschaftler der Universität Bonn provozieren natürliche Erbgutveränderungen in Maispflanzen: Mit einem Enzym aktivieren sie „springende Gene“, die die Sequenz der Keimlinge verändern.


BonnMu collection is still expanding

The latest BonnMu release (as of 08-17-2020) adds > 5,000 genes tagged by Mu transposons. Our BonnMu collection is still expanding to archive genes tagged by germinal Mu insertions.



covers insertions in >16,000 maize genes

C. Marcon, F. Hochholdinger and colleagues published a research article in Plant Physiology on BonnMu: the novel Europe based Mutator (Mu) transposon insertional library.



Baldauf and Hochholdinger published a research article in the Journal of Experimental Botany on the robustness of hybrid-associated gene expression patterns during primary root development.


Graduate celebrations

Our former master students Verena Müller, Yan Naing Win and Annika Kortz (from left to right) attended the annual graduate celebrations of the University of Bonn. All three continue their work in our group as PhD students.


Visit at Southwest University in China

Frank Hochholdinger and Peng Yu visited their collaborator Xinping Chen at Southwest University (SWU) and met former PhD student Changzheng Xu who is now associate professor at SWU and future PhD student Li Guo.