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12 September 2019 | Story Valentino Ndaba | Photo Charl Devenish
Arbor tree plant
To celebrate National Arbor Week the University of the Free State has embarked on a drive to plant 150 trees during the month of September

If you’ve wondered whether Arbor Month was important, you only have to look at the destruction and long-term damage that deforestation causes to the environment and the world’s inhabitants. To observe National Arbor Month, the University of the Free State’s has (UFS) kick-started a drive to plant 150 trees during the month of September.

To launch this initiative, the Rector and Vice-Chancellor, Prof Francis Petersen, alongside members of the rectorate, assisted the University Estates team in planting the first 10 of 100 trees at the Bloemfontein Campus on Wednesday 4 September 2019. A total of 50 trees will be planted on the Qwaqwa Campus.

Towards a sustainable future

“We have gone through periods of drought in the Free State that have severely impacted not only the plants but the trees on our campuses. The idea is to emphasise sustainability, and as a university, we believe that sustainability is important. As an education institution, we have to look at the generations that are still to come to our campuses,” said Prof Petersen.

He urged the Kovsie community to ensure that all practices across the campuses are linked to global standards of sustainability. “As we develop over the next couple of months and years, we will get much closer alignment between what we are doing as a university and the Sustainable Development Goals.

Drought-resistant man-made forests

Clusters of mini forests across the campuses will be created with a variety of trees including the karee, white karee, white stinkwood, and wild olive. These indigenous trees can adapt well to different soils including those that are poorly drained.

Celebrating Arbor Week

This year’s campaign was held under the theme Forests and Sustainable Cities. As part of the celebration, University Estates made a commitment to the environment by embarking on the green initiative which includes other project such as the upgrade of Red Square on the Bloemfontein Campus.

News Archive

UFS study on cell development in top international science journal
2008-09-16

A study from the University of the Free State (UFS) on how the change in the packaging of DNA with cell development influenced the expression of genes, will be published in this week’s early edition of the prestigious international, peer-reviewed science journal, the Proceeding of the National Academy of Sciences of the USA (PNAS).

The PNAS journal has an impact factor of 10, which means that studies published in the journal are, on average, referred to by ten other scientific studies in a two year period. The South African Journal of Science, by comparison, has an impact factor of 0.7.

The UFS study, funded by the Wellcome Trust and the National Research Foundation (NRF), looked at how the change in the packaging of DNA with cell development influenced the expression of genes. It is very relevant to research on stem cells, an area of medicine that studies the possible use of undifferentiated cells to replace damaged tissue.

Prof. Hugh Patterton, of the Department of Microbial, Biochemical and Food Biotechnology at the UFS, who led the study, said: "We are extremely proud of this study. It was conceived in South Africa, it was performed in South Africa, the data were analysed in South Africa, and it was published from South Africa."

When a gene is expressed, the information encoded in the gene is used to manufacture a specific protein. In eukaryotes, which include humans, there is approximately 1m of DNA, containing the genes, in every cell. This length of DNA has to fit into a cell nucleus with a diameter of only about 10 micrometer. In order to fit the DNA into such a small volume, eukaryotic cells wrap their DNA onto successive protein balls, termed nucleosomes. Strings of nucleosomes, resembling a bead of pearls, is folded into a helix to form a chromatin fiber. The study from the UFS investigated how the binding of a specific protein, termed a linker histone, that binds to the length of DNA between nucleosomes, influenced the formation of the chromatin fiber and also the activity of genes.

"We found that the linker histone bound to chromatin in yeast, which we use as a model eukaryote, under conditions where virtually all the genes in the organism were inactive. It was widely believed that the binding of the linker histone caused the inactivation of genes. We studied the relationship between the amount of linker histone bound in the vicinity of each gene and the expression of that gene for all the genes in yeast, using genomic techniques. We made the surprising discovery that even through the linker histone preferentially bound to genes under conditions where the genes were shut off, this inactivation of genes was not caused by the binding of the linker histone and folding of the chromatin,” said Prof. Patterton.

He said: “Instead our data strongly suggested that the observed anti-correlation was due to the movement of enzymes along the DNA molecule, involved in processing the information in genes for the eventual manufacture of proteins. This movement of enzymes displaced the linker histones from the DNA. This finding now requires a rethink on aspects of how packaging of DNA influences gene activity."

Prof. Patterton said that his research group, using the Facility for Genomics and Proteomics as well as the Bioinformatics Node at the UFS, was currently busy with follow-up studies to understand how other proteins in nucleosomes affected the activities of genes, as well as with projects to understand how chemicals found in red wine and in green tea extended lifespan. "We are certainly having a marvelous time trying to understand the fundamental mechanisms of life, and the UFS is an exciting place to be if one was interested in studying life at the level of molecules," he said.


Media Release
Issued by: Lacea Loader
Assistant Director: Media Liaison
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl.stg@ufs.ac.za  
18 September 2008
 

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