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  4. Lab-on-a-chip trial looks to up biosecurity detection times

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Lab-on-a-chip trial looks to up biosecurity detection times

  • Media release
  • Plants
  • Biosecurity
  • Detection
22 August 2022

A diagnostic tool using nano technology to rapidly detect high-risk plant pests and pathogens in the field will undergo feasibility testing in a biosecurity innovation pilot kicking off this month.

The lab-on-a-chip project will investigate if portable nano-biosensors improve the efficiency of plant disease detection at Australian borders and in-field surveillance.

Once the technology is proven a handheld prototype will be developed for use by frontline biosecurity officers.

Department of Agriculture, Fisheries and Forestry Deputy Secretary of Biosecurity and Compliance Dr Chris Locke said the pilot was one of up to 24 innovation program pilots funded this year.

"When our biosecurity officers detect suspected high-risk plant pests presently, they send the samples to off-site laboratories, where diagnostic personnel confirm results. It can be a time-consuming, lengthy and costly process," Dr Locke said.

"If this technology works, it means our biosecurity officers can take a sample from a suspect plant. Then, using the nano-device, identify the specimen by detecting a pest's or plant's RNA (ribonucleic acid) while still at the airport, port or in the field.

"This technology will significantly help the clearance rate of goods at our border, often held up waiting on test results."

Nano-biosensors are currently used in the medical field to diagnose infectious diseases and conditions such as cancer.

Project research will take place at the department's Plant Innovation Centre at the Post-Entry Quarantine facility in Melbourne.

A tandem line of research will be undertaken by the NanoBiotechnology Research Laboratory at RMIT University also in Melbourne.

A second project will investigate the use of nano-fabricated microneedles in conjunction with the biosensors.

All samples taken must be purified. Microneedles use Micro-Electro-Mechanical-Systems (MEMS) to extract cell contents from a suspect plant. This is then placed in the nano-sensor and scanned.

The microneedle research component will be conducted by the University of Southern Queensland.

Images of the nano-biosensor and microneedles are available for media use here.

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Page last updated: 22 August 2022

We acknowledge the continuous connection of First Nations Traditional Owners and Custodians to the lands, seas and waters of Australia. We recognise their care for and cultivation of Country. We pay respect to Elders past and present, and recognise their knowledge and contribution to the productivity, innovation and sustainability of Australia’s agriculture, fisheries and forestry industries.

Artwork: Protecting our Country, Growing our Future
© Amy Allerton, contemporary Aboriginal Artist of the Gumbaynggirr, Bundjalung and Gamilaroi nations.

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