Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
07 August 2025 | Story Martinette Brits | Photo Stephen Collett
Prof Willem Boshoff
Prof Willem Boshoff shares insights from decades of rust disease research during his inaugural lecture at the University of the Free State.

Rust diseases of food crops remain one of agriculture’s most enduring and evolving challenges. In his inaugural lecture on 23 July 2025 at the University of the Free State (UFS), Prof Willem Boshoff shared how these complex pathogens continue to pose a significant threat to South Africa’s staple crops – and why continued research is more critical than ever.

Titled Battling rust diseases of food crops in South Africa, the lecture reflected on decades of rust research and recent developments in pathogen virulence. Prof Boshoff, from the Department of Plant Sciences, emphasised that the threat posed by rust fungi today stems from their “mechanisms of variability, their ease of long-distance spore dispersal, and subsequent foreign race incursions”.

 

A shifting disease landscape

Rust fungi are biotrophic organisms that cannot be cultured on artificial growth media. This makes rust research a technically demanding field that requires living pathogen collections, seed sources, skilled researchers, and specialised infrastructure. Prof Boshoff noted that for more than 35 years, the UFS has been at the forefront of this work, monitoring rust pathogens on wheat, barley, oats, maize, and sunflower.

While wheat remains the most extensively studied type, recent rust outbreaks across a range of crops point to a worrying trend. A localised outbreak of stem rust on spring wheat in the Western Cape has been linked to race BFGSF, which carries a previously unknown combination of virulence genes affecting both wheat and triticale. In 2021, leaf rust race CNPSK was detected, showing virulence to the highly effective Lr9 resistance gene.

More recently, stripe rust race 142E30A+ – first reported in Zimbabwe – was found in wheat cultivars from the Free State and northern irrigation areas. “Results revealed increased susceptibility of especially spring irrigation wheat cultivars,” Prof Boshoff explained, particularly due to its virulence to the Yr9 and Yr27 resistance genes.

Rust pathogens affecting other crops are also evolving. In maize, only a few lines with mostly stacked resistance gene combinations were effective against all tested isolates. In sunflower, just four of 30 Agricultural Research Council national trial hybrids showed resistance to local rust races.

 

Building better resistance

A key strategy in rust control lies in identifying and understanding resistance in host plants. This, Prof Boshoff stressed, requires optimised phenotyping systems for both greenhouse and field conditions, along with a solid understanding of available resistance sources. At the UFS, several recent studies have contributed valuable data to both local and international plant breeding programmes.

“Continued local and regional rust research is critical,” he said. “It supports early detection of new races, alerts to producers through updated cultivar responses, and enables efficient breeding strategies and other sustainable methods of rust management.”

The rust programme at the UFS has not only supported varietal release and on-farm risk management, but also strengthened collaboration between plant scientists, industry partners, and international researchers. With South Africa’s strategic location and history of rust surveillance, the programme continues to play a pivotal role in continental and global food security efforts.

 

About Prof Willem Boshoff

Prof Willem Boshoff is a plant pathologist with a strong background in wheat breeding and rust disease control. He holds four degrees from the University of the Free State, all awarded cum laude: a BScAgric (1994), BScAgric Honours (1995), MScAgric (1997), and PhDAgric (2001). His doctoral research focused on the control of foliar rusts in wheat.

Between 2001 and 2016, he worked as a wheat breeder and contributed to the release of several commercial cultivars. He joined the UFS Department of Plant Sciences in 2017 and has since been actively involved in national and international research projects, capacity development, and advancing disease resistance in food crops.

News Archive

Academic and security arrangements on the Bloemfontein and South Campuses for the coming week
2016-02-28

All academic and administrative services on the Bloemfontein and South Campuses of the University of the Free State (UFS) will resume on Monday 29 February 2016.

The following academic and security arrangements have been put in place:

1.    Academic arrangements:

It is important to remember that losing an academic week has major implications for all students, particularly for first-year students, and for purposes of academic planning. The university will therefore resume its normal work on Monday 29 February 2016. Losing any additional time will severely disadvantage students, especially those who desperately need the time to catch up with lectures ahead of the coming tests and examinations. Many more students will struggle to complete the academic year if any further time is lost.

In order to ensure that the academic work of the university is not undermined, the UFS will extend this academic term by one week.
This will allow the completion of the work scheduled for last week. Given the impact that disruptions had on the emotions and concentration of many of our students, academics are requested to manage the setting and re-setting of all tests and assignments scheduled for last week with sensitivity, and to be supportive of students as they re-start their academic work.  No student should be disadvantaged in terms of tests or assignments as a result of last week’s closure. We know you would do this anyway, but this is a reminder to all staff of what we expect to be a common approach and understanding on the part of lecturers.

We rely on the leadership of the deans in the seven faculties to support staff and students in dealing with the lost time in the most appropriate manner and in supporting all efforts to refocus energies on the academic project.

As the senior leadership and management of the university, we will continue to do everything in our power to make sure that the academic programme continues uninterrupted.

2.    Security arrangements:
The Bloemfontein Campus is secure and we have more than doubled the security arrangements, with the interdict firmly in place.

The university management condemns in the strongest possible terms the violence that took place at Xerox Shimla Park on the night of Monday 22 February 2016. It also condemns the disruptions of the university that followed Monday’s event, which resulted in the suspension of academic and administrative activities on the Bloemfontein Campus. In line with the terms of the interdict - and now that we are at full capacity to secure this very large and spread-out campus - the university will act swiftly and firmly if any protests or disruption recur.

The following security arrangements are in place:
2.1  Staff and students must have their staff and student cards with them when entering the campus. Passengers in motor vehicles will have to present their cards to security personnel before access could be granted. Security personnel will check this physically by verifying that each person has a valid staff or student card.

2.2  Buses will not be allowed to enter the campus and passengers will have to be dropped off outside the gates - passengers will enter through the turnstiles with their valid access cards. Anyone without a valid access card will have to go to the Visitors Centre and present positive proof of ID (SA ID, passport or driver’s licence).

2.3  Pedestrians will have to swipe their cards at the turnstiles at the gates. Those without cards will have to enter through the Visitors Centre by presenting positive proof of ID (SA ID, passport or driver’s licence).

2.4  Visitors must report to the Visitors Centre (at Gate 5 in DF Malherbe Drive) and present positive proof of ID (SA ID, passport or driver’s licence).

2.5  Due to anticipated delays, it is advised that people allow some additional time when planning their routes to campus and to also make use of the less busy gates, such as Gate 4 (Furstenburg Road) and Gate 2 (Roosmaryn Residence).

2.6  It is advised that walkways be used, especially at night, and that pedestrians should keep to areas that are well lit.

Security helpline: +27(0)51 401 2911 | +27(0)51 401 2634.
 

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