Data -The potential of alternative seed treatments to control anthracnose disease in white lupin

White lupin (Lupinus albus L.) is a promising crop to meet the rising global demand for plant-based protein. The<br> seed-borne pathogen Colletotrichum lupini, however, threatens lupin cultivation worldwide. Seed dressings using<br> synthetic fungicides were shown effective to reduce infection levels, but their negative environmental impact and<br> exclusion from organic production calls for more sustainable solutions. In this study, a total of eleven different<br> alternative seed treatments were tested in field trials in Switzerland between 2018 and 2021. Treatment types<br> consisted of: hot water, steam, electron, long-term storage, elevated partial pressure of oxygen (EPPO), vinegar,<br> plant extracts and biological control agents (BCAs). The BCAs were tested for potential antagonistic activity<br> against C. lupini during white lupin infection under controlled conditions prior to field trials. Long-term storage<br> and vinegar treatments successfully reduced disease incidence and increased yield to levels similar to those<br> observed for certified seeds, without significantly affecting germination rate. Although promising, effectiveness<br> of these treatments needs further validation. Four BCAs showed significant disease reductions under controlled<br> conditions. Besides lowering disease severity, two BCAs also reduced C. lupini DNA in stem tissue. These reductions,<br> however, were not observed in the field, highlighting the importance of field validations. The treatments<br> identified in this study provide a solid basis for the development of sustainable and effective seed<br> protection strategies in white lupin to control C. lupini successfully.白羽扇豆（Lupinus albus L.）是一种有望满足全球日益增长的植物蛋白需求的优质作物。然而，种传病原菌羽扇豆炭疽病菌（Colletotrichum lupini）正威胁着全球范围内的白羽扇豆种植。使用合成杀菌剂的种子处理措施可有效降低病原菌侵染水平，但这类处理对环境存在负面影响，且无法应用于有机生产体系，因此亟需开发更可持续的解决方案。 本研究于2018至2021年间在瑞士开展田间试验，共测试了11种不同的替代种子处理方案。处理类型包括：热水处理、蒸汽处理、电子处理、长期贮藏、高局部氧分压（elevated partial pressure of oxygen, EPPO）、醋处理、植物提取物以及生物防治菌（biological control agents, BCAs）。 在田间试验开展前，研究人员先在受控条件下，测试了这些生物防治菌在白羽扇豆侵染过程中对抗羽扇豆炭疽病菌的潜在拮抗活性。长期贮藏与醋处理可有效降低病害发生率，并将产量提升至与认证种子处理相当的水平，且未显著影响种子发芽率。尽管这些处理效果喜人，但其有效性仍需进一步验证。 在受控条件下，共有4种生物防治菌可显著降低病害发生率。除降低病害严重程度外，其中2种生物防治菌还可降低茎组织中的羽扇豆炭疽病菌DNA含量。然而，这一效果在田间试验中并未观测到，这凸显了田间验证的重要性。 本研究中筛选出的处理方案，为开发可持续且高效的白羽扇豆种子保护策略、成功防控羽扇豆炭疽病菌提供了坚实基础。