Australia’s Food Future: CRISPR, Potato Sorting, and Biosecure Oysters in Catalyst Special

Overview

In this Catalyst special from ABC Science, the future of food in Australia is explored through biotech, farming innovation and biosecurity. The program travels from large scale potato processing to chemical free wine making, oyster biosecurity and ambitious food waste solutions, weaving together science, industry and policy perspectives.

• Automated potato sorting at Motolo showcases scale, speed and minute quality control through cameras and gentle machinery.
• Biosecurity and disease resistance feature in oyster farming, including breeding and cryopreservation approaches.
• CRISPR and other gene technologies are examined as potential routes to chemical free farming, alongside debates about GM regulation.
• Reclaiming discarded produce demonstrates how waste streams can become nutritious, shelf-stable foods.

Australia’s food system on the horizon

This Catalyst special looks at how Australians might stay fed in the coming decades by blending biology, data science and sustainable farming practices. It stitches together a landscape of innovation from potato processing to drought-resilient crops, and from wine making without synthetic chemicals to biosecurity measures protecting seafood like oysters. The series frames a big question: how can a country with rich natural resources feed 40 million people by 2050 without compromising its pristine environment?

Potatoes at scale and precision farming

In South Australia’s Barossa region, one of the world’s largest potato processes is showcased. The Motolo sorting plant handles tens of thousands of tonnes annually and accounts for a large share of Australia’s fresh potatoes. A team of around 65 workers oversees an astonishingly automated system: washing, hydrocooling, and gentle conveying, with cameras capturing each potato from multiple angles. The computer grades spuds by blemishes and other quality traits, while a human check ensures consumer expectations of appearance remain. This is presented as a model of how a nation can feed itself with high efficiency while maintaining quality standards.

Biology in the field: from vineyards to the lab

The program then tours the Barossa wine country, where organic farming eschews synthetic chemicals in favor of natural microbiota. The guest, Troy Koleski, demonstrates pump-overs in fermentation and the idea that chemical-free farming can be sustainable and potentially yield better-tasting wines. The discussion broadens to the challenges of biosecurity, including threats like mildews to vines and the risk of pests that Australia must keep at bay as a small island nation in a global market. The segment introduces two core technologies: breeding resistance through genetics and exploration of new gene technologies under regulatory scrutiny.

CRISPR and the GM debate

Scientists at the Waite campus explain genetic modification and the emergence of gene editing as a more precise, potentially more acceptable tool for improving crops. The piece outlines distinctions between traditional GM and CRISPR-based editing, showing how gene editing can mimic natural mutations without introducing foreign DNA. The regulatory debate is highlighted by contrasting views from researchers and industry representatives, and the episode features a hands-on demonstration of CRISPR concepts. The goal is to show both the scientific potential and the policy landscape shaping adoption in agriculture.

Biosecurity and seafood: oysters under threat

The program shifts to the York Peninsula to examine Pacific Oyster Mortality Syndrome, a virus threatening Australian oyster farms. South Australia’s strict biosecurity measures illustrate how outbreaks could devastate a key export industry. Scientists at the Aquatic Services Centre describe breeding strategies for resistance and the development of cryopreservation techniques to safeguard oyster lines for the future. The segment emphasizes the role of biotechnology and breeding as part of a broader strategy to keep the nation fed while maintaining ecological and economic resilience.

From waste to wonder: reclaiming discarded food

Back at Motolo, attention turns to waste: roughly one in five potatoes never reach consumers. The narrative connects this loss to broader food-system inefficiencies, energy use and water consumption. Australian food scientists at WAITT are exploring ways to transform discarded produce into long-lasting foods such as potato puree desserts that emphasize nutritional value like dietary fiber and potassium. While such reclaimed foods show promise, the discussion also cautions against over-processing and the importance of maintaining healthful, minimally processed options.

Sensory science and taste resetting

The final act follows a sensory lab at the University of Adelaide where taste perception is tested. The host tries to understand personal taste sensitivity, discovering that some people are supertasters with heightened sensitivity to flavor. A plan to reset taste through bland, simple foods is explored, highlighting how understanding perception can influence healthier eating patterns without sacrificing enjoyment. The segment frames taste as a key lever in shaping food choices and, by extension, agricultural demand and reformulation strategies.

Plant science and the farming of tomorrow

The climate reality in Australia is dramatized as the series visits wheat country. The Goitre Line historically separated wetter and drier regions, a symbol of how climate shapes cropping choices. Researchers use drone-based imaging and plant phenotyping to assess drought and salt tolerance under simulated field conditions. Plant accelerators speed up the evaluation of crop traits, enabling researchers to rapidly identify varieties that will endure harsher conditions. The message is clear: today’s breeders rely on advanced imaging, hyperspectral cameras and data analytics to stay ahead of climate change.

Conclusion: a new era of food production

Across these stories the show emphasizes that the future of food is not just about growing more but growing smarter and more sustainable. It closes with a vision of a highly interconnected system that blends farming practice, molecular biology, data science and responsible policy to secure a resilient food supply for a growing population while safeguarding Australia’s natural heritage.