Lincoln University Secures Smart Ideas Extension for Pine Tree Disease Research

Lincoln University has received an extension of funding through the Ministry of Business, Innovation and Employment’s Smart Ideas programme to continue groundbreaking work on microbial bioactive compounds for managing foliar diseases in New Zealand’s radiata pine plantations. The project, titled Unlocking the potential of microbial bioactive compounds to promote forest health, represents a significant step forward in sustainable forestry research at the institution.

Background on the Smart Ideas Funding Initiative

The Smart Ideas programme supports innovative, high-risk, high-reward research projects that have the potential to deliver significant benefits to New Zealand. Lincoln University’s initiative focuses on shifting away from traditional chemical controls toward biological alternatives derived from beneficial microorganisms. This extension builds directly on more than two years of prior laboratory and nursery work, allowing the team to advance into expanded field assessments.

Forestry is a cornerstone of the New Zealand economy, with the sector valued at approximately $6.25 billion. Radiata pine dominates commercial plantations, yet it faces persistent threats from foliar pathogens that can cause substantial economic losses when trees appear healthy for the first two or three years before sudden decline sets in.

The Challenge of Foliar Diseases in Radiata Pine

Diseases such as Dothistroma needle blight and Red Needle Cast have long challenged New Zealand’s pine forests. These pathogens lead to needle loss, reduced growth, and in severe cases, tree mortality. Current management relies heavily on copper-based fungicides, with around 50 tonnes applied annually at an estimated cost of $57 million, plus broader environmental, health, and social impacts.

Researchers at Lincoln University are exploring how microbial bioactive compounds produced by plant-beneficial fungi can enhance the trees’ natural defence mechanisms. Early laboratory results demonstrated promising control of the target pathogens, paving the way for the current phase of real-world testing.

Innovative Research Approach Using Microbial Bioactive Compounds

The core innovation lies in harnessing compounds from beneficial fungi rather than relying solely on synthetic chemicals. This approach aims to boost the pine trees’ innate immune responses, offering a more sustainable pathway for disease management. The research team has already observed growth responses in nursery trials, providing initial evidence that the compounds can influence tree performance under controlled conditions.

Field trials are now underway at plantation sites on the West Coast, where one-year-old treated and untreated seedlings have been established. These plantings allow researchers to monitor real-world performance, disease incidence, and overall tree health over multiple seasons.

Photo by Jacob Thorson on Unsplash

Progress in Nursery and Plantation Trials

Nursery work has provided valuable data on seedling responses, while the extension funding will support a second round of plantation assessments. Trees will be measured for height and evaluated for disease presence, with comparisons against untreated controls. Additional investigations will examine whether different pine seedlines show varying responses to the microbial treatments.

Dr Artemio Mendoza-Mendoza, who leads the project at Lincoln University, noted that further testing is essential to confirm effectiveness beyond the nursery environment. The work positions Lincoln University at the forefront of efforts to develop environmentally friendly alternatives that could reduce reliance on copper fungicides.

Key Collaborations and Institutional Partners

The project benefits from extensive partnerships across academia and industry. Collaborators include Massey University, the Bioeconomy Science Institute, University of Canterbury, University of Otago, Ngāi Tahu Forestry, West Coast Forests, Radiata Pine Breeding Company, PF Olsen Nursery, Southern Cypresses Nursery, Appletons Tree Nursery, and Proseed Ltd NZ.

At Lincoln University, Dr Mendoza-Mendoza is supported by Dr Helen Whelan, Dr Nicole Xu, and PhD student Aravinda Kumar Potluri. This multidisciplinary team brings together expertise in microbiology, plant pathology, forestry, and applied research, strengthening the project’s capacity to deliver practical outcomes.

Implications for New Zealand’s Forestry Sector and Sustainability

Successful development of microbial bioactive compound treatments could transform disease management practices across New Zealand’s commercial pine forests. By reducing chemical inputs, the approach aligns with broader goals of environmental sustainability and reduced ecological footprint in the forestry industry.

The findings may also hold relevance internationally, as similar foliar diseases affect pine plantations in Europe and other regions. Lincoln University’s research therefore contributes to global knowledge on biological disease control in forestry.

Lincoln University’s Role in Higher Education Research

As a specialist land-based university, Lincoln University plays a vital role in advancing applied research that directly supports New Zealand’s primary industries. The Smart Ideas extension underscores the institution’s strength in securing competitive funding for projects with clear industry relevance and potential for commercial translation.

PhD training forms an integral part of the initiative, providing early-career researchers with hands-on experience in microbiology, field trial design, and stakeholder engagement. Such opportunities help build the next generation of scientists equipped to address complex challenges in plant health and sustainable land use.

Photo by Mikheil Kuzmidi on Unsplash

Future Outlook and Next Steps

The funding extension will enable continued data collection through additional plantation assessments and seedline response studies. Researchers hope the results will demonstrate the value of sustained investment in these biological tools, potentially opening pathways for larger-scale trials or commercial development.

Longer-term, the project could contribute to more resilient pine plantations, supporting both economic returns and environmental outcomes for the forestry sector. Lincoln University remains committed to translating laboratory discoveries into practical solutions that benefit industry partners and the wider community.

Broader Context of Research Funding in New Zealand Higher Education

Competitive programmes such as Smart Ideas form a critical part of the research funding landscape for New Zealand universities. They encourage innovative thinking and cross-institutional collaboration while prioritising projects with tangible benefits for the economy and environment.

Lincoln University’s success in securing the extension highlights the quality of its research proposals and the strength of its partnerships with government agencies, other universities, and industry stakeholders. This model of collaborative, applied research continues to drive progress in areas vital to New Zealand’s land-based economy.