Latest News Archive

Please select Category, Year, and then Month to display items
Categories
UFS News Media Release Research
Years
2017 2018 2019 2020 2021 2022 2023 2024
Months
January February March April May June July August September October November December
Previous Archive
26 September 2019 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Read More Prof Wijnand Swart PSHB
A small 2 mm beetle, known as the Polyphagous shothole borer (PSHB) kills and infects trees. South Africa is the largest geographical area in the world to be infested with this tree killer. Pictured here is Prof Wijnand Swart who is working with two neighbourhood associations in Bloemfontein to monitor the occurrence of the beetle in the city.

Ornamental trees are dying all over South Africa, and it is feared that certain fruit and nut trees are also in danger. This is cause for great concern, not only among ecologists, farmers, foresters, and landscapers, but for homeowners as well. In private gardens and on streets throughout the country, trees that are afflicted include English oak, Chinese and Japanese maples, boxelder, and sweetgum.
 
The cause of all this havoc is a small 2-mm beetle, known as the Polyphgous shothole borer (PSHB; Euwallacea fornicatus) that originates from Southeast Asia.

Working to find a solution

"Based on damage seen in the USA and Israel, there is significant danger of losing many of our ornamental trees as well as fruit and certain nut trees in South Africa,” says Prof Wijnand Swart, Professor of Plant Pathology and Discipline Head in the Department of Plant Pathology at the University of the Free State (UFS).

Cases of afflicted trees were reported from all provinces in South Africa, except for Mpumalanga. Countries such as Israel and the USA have also suffered great losses as a result of this beetle.  

Research is being conducted on the beetle and its associated fungus, Fusarium euwallaceae, in order to understand their relationship and hopefully find a solution to stop, or at least manage, the invasion of trees. To investigate the largest geographical outbreak of this beetle in the world, academics from seven universities in South Africa are working together with the Forestry and Agricultural Biotechnology Institute (FABI) at the University of Pretoria through a multi-institutional and multi-disciplinary research network. UFS researchers are part of this network.
 
Senior Lecturer in the UFS Department of Plant Sciences, Dr Gert Marais, is conducting research on the PSHB and its associated fungi, with the focus on pecan trees, in conjunction with the South African Pecan Nut Producers' Association. Cases of infected pecan-nut trees were reported in the Northern Cape as well as in Nelspruit. 
 
Prof Swart is working with entomologists in the UFS Department of Zoology and Entomology to find a biological control agent to parasitise the beetle. “I have already found one instance of a parasitic wasp associated with the beetle and will continue to search for more specimens during the coming summer,” he commented. 
 
Understanding the beetle

The first cases of infected trees were discovered in 2017 when Dr Trudi Paap, associated with FABI and the South African National Biodiversity Institute, conducted a survey of pests and diseases in and around National Botanical Gardens in South Africa. 
 
FABI has been studying the tree killer intensively to find out more about its life cycle. The term ‘polyphagous’ refers to the ability of the PSHB to infest many different tree species.

On their website, FABI states that an important distinction is being made between different types of infestations. “Reproductive host trees are trees that are infested by the beetle and where it successfully establishes a breeding gallery in which the fungus grows, where eggs are laid, and larvae develop into mature adults, thus completing its life cycle. The majority of reproductive hosts eventually succumb to the disease symptoms caused by the fungus.”
 
“Non-reproductive host trees are trees where the beetle attacks, penetrates, and inoculates the fungus, which then starts to grow in the sapwood. However, the beetle either leaves or dies without reproducing in these trees. The fungus can eventually kill or damage reproductive hosts, but many of the tree species on this list seem to be unaffected.”
 
Involving the community

The situation also provides an opportunity for communities to directly benefit from research conducted by tertiary institutions. Prof Swart is working together with two neighbourhood associations in Bloemfontein to monitor the occurrence of the beetle in the city and surrounding areas. 

He urges residents in the Mangaung Metro who find instances of infected trees, to report it to Duart Hugo (duarthugo99@gmail.com ), who is compiling a database of infected trees in the area. 
 
FABI advises homeowners to cut down heavily infested reproductive host trees. Should you decide to burn the wood, note that beetles will fly away when the wood becomes hot or when smoke appears. Do not burn infested trees in uninfected areas.

Other interesting material

An actual Polyphagous shothole borer PSHB beetle
An actual Polyphagous shothole borer PSHB beetle
UFS Researcher Prof Wijnand Swart seeks to eradicate Polyphagous shothole borer PSHB
UFS Researcher Prof Wijnand Swart seeks to eradicate Polyphagous shothole borer PSHB
Polyphagous shothole borer PSHB larva in tree bark
Polyphagous shothole borer PSHB larva in tree bark

News Archive

New student leaders for UFS
2013-08-29

 

Rudi Buys, Dean of Student Affairs (centre), with newly elected president of the Bloemfontein Campus SRC, Phiwe Mathe (left) and Matlogelwa Moema, president of the Qwaqwa Campus SRC.
Photo: Sonia Small
29 August 2013

  Photo Gallery
2013/14 Student Representative Councils: YouTube video

Phiwe Mathe and Matlogelwa Moema, both third year students, have been elected as presidents of the 2013/14 Student Representative Councils (SRC) of the University of the Free State’s Bloemfontein and Qwaqwa Campuses respectively. They now also serve as the presidency of the Central SRC and will take up their seats as voting members of the UFS council in September 2013. Thirty-eight candidates contested the 19 elective seats of the campus SRCs, for which 83 nominations were received.

Rudi Buys, Dean of Student Affairs, announced the completion of the elections at the two campuses as successful.Buys deemed the elections highly significant, considering it is the third year of peaceful elections since students adopted changes in student governance in 2011. These changes included, among others, the introduction of independent candidacy for elective portfolios and organisational candidacy in SRC sub-councils that hold ex-officio seats on the campus SRC. Changes also included the establishment of student representative seats in faculty forums and the adoption of reviewed SRC constitutions, Buys said.

The SRC elections at the Qwaqwa Campus were completed on 23 August 2013, while the elections at the Bloemfontein Campus took place on 26 and 27 August 2013. Elections at the Qwaqwa Campus showed a voter turnout of 44% and at the Bloemfontein Campus a turnout of 31.5%, which is among the highest in the country.

Both campuses reached the required quorums and the campus elections bodies, the IEA (Bloemfontein Campus) and IEC (Qwaqwa Campus), declared the elections free and fair and announced the results as a true reflection of the will of the student bodies at the campuses.

This year also saw the piloting of a central SRC elections oversight committee (CEC) to strengthen independent oversight of all elections. The CEC monitors the elections as free, fair and democratic and consists of senior academics and former student leaders of the Student Elders Council. Prof Loot Pretorius, inaugural chair of the CEC, announced the CECs confirmation of the SRC elections across campuses as free, fair and democratic.

Celebrations marked a mass meeting on the Bloemfontein Campus where the new student leaders were announced on Thursday 29 August 2013. There were cheers and singing as Quintin Koetaan, Head of the Bloemfontein IEA, on behalf of the two elections bodies, read the names of the newly-elected student leaders of both campuses. Delivering his victory speech, Phiwe thanked competitors for running a good debate, saying it was not about characters or personalities, but rather the ideas that would best serve a Kovsie. “Students will remain central and the ‘R’ is back in SRC,” he told the resounding crowd. Matlogelwa reiterated this message and said, "the SRC is for students and will serve all students equally."

Following on the heels of the SRC elections, voting for residence committees will take place next week with 618 candidates contesting 231 available positions. The elections of association executive committees will also take place in September.

The new SRC members of the Bloemfontein Campus are:

President: Phiwe Mathe
Vice-President: Tshepo Moloi
Secretary: Masiteng Paul Matlanyane
Treasurer: Willem du Plooy
Arts andCulture:Hlonipa Matshamba
Accessibility and Student Support:Anastasia Sehlabo
First Generation Students: Nthabiseng Malete
Legal and Constitutional Affairs: Mosa Leteane
Media, Marketing and Liaison: Callie Hendricks
Sport: Laurika Hugo
Student Development and Environmental Affairs: Bataung Qhotsokoane
Transformation: Christopher Rawson
Assosiations Council and Ex officio:Ntakuseni Razwiedani
Academics Affairs Council and Ex officio: TBC
Residence Council and Ex officio: Andricia Hinckermann
Commuter Council and Ex officio:Clarise Haasbroek
Postgraduate Council and Ex officio: Oluwatoba Fadeyi
International Council and Ex officio: Brian Hlongwane
Student Media Council and Ex officio: Keabetswe Magano
RAG Fundraising Council and Ex officio: Jaco Faul
Rag Service Council and Ex officio: Suzanne Maree


The new SRC members of the Qwaqwa Campu are:

President: MP Moema
Deputy-President: NT Mndebele
Secretary General: JC Mosiea
Treasurer General: NT Zuma
Politics and Transformation: IT Dube
Media and Publicity: ZF Madlala
Student Development and Environmental Affairs:SS Mtetwa
Off-Campus Students: TSJ Sithole
Arts and Culture: S Mabele
Academic Affairs: NE Litabo
Sport Affairs: TSG Mohlakoana
Religious Affairs:TW Mofokeng
Residence and Catering Affairs: A Ndabankulu
RAG Community Service and Dialogue: S Yende

Issued by: Lacea Loader
Director: Strategic Communication

Telephone: +27(0)51 401 2584
Cellphone: +27 (0) 83 645 2454
E-mail: loaderl@ufs.ac.za

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept