Cerón-Bustamante Minely, Tini Francesco, Beccari Giovanni, Onofri Andrea, Balducci Emilio, Sulyok Michael, Covarelli Lorenzo, Benincasa Paolo
Department of Agricultural, Food and Environmental Sciences, University of Perugia, 06121 Perugia, Italy.
Department of Agricultural Sciences, Institute of Bioanalytics and Agro-Metabolomics, BOKU University, A-3430 Tulln, Austria.
Plants (Basel). 2025 Jul 1;14(13):2013. doi: 10.3390/plants14132013.
Previous studies indicated that light influences mycotoxin production and wheat's defense responses to the cereal fungal pathogen . Herein, the effect of different light wavelengths on colonization and secondary metabolite biosynthesis in bread wheat was assessed. Heads of a susceptible bread wheat cultivar were point-inoculated and exposed to red (627 nm), blue (470 nm), blue/red, and white light. Symptom severity, fungal DNA, and secondary metabolite accumulation were evaluated. Blue and red wavelengths reduced infection but had an opposite effect on the production of its fungal secondary metabolites. While blue light enhanced the accumulation of sesquiterpene mycotoxins, red light promoted the production of polyketide compounds. In addition, blue light stimulated deoxynivalenol glycosylation. These findings suggest that the light spectrum could affect mycotoxin contamination of wheat grains, highlighting the importance of light quality studies in field crops.
先前的研究表明，光照会影响霉菌毒素的产生以及小麦对谷物真菌病原体的防御反应。在此，评估了不同光波长对面包小麦定殖和次生代谢物生物合成的影响。对一个感病面包小麦品种的麦穗进行点接种，并使其暴露于红色（627纳米）、蓝色（470纳米）、红蓝组合光和白光下。评估了症状严重程度、真菌DNA和次生代谢物积累情况。蓝色和红色波长减少了感染，但对其真菌次生代谢物的产生有相反的影响。蓝光增强了倍半萜霉菌毒素的积累，而红光促进了聚酮化合物的产生。此外，蓝光刺激了脱氧雪腐镰刀菌烯醇糖基化。这些发现表明，光谱可能会影响小麦籽粒的霉菌毒素污染，突出了田间作物光质研究的重要性。
