期刊
TOXINS
卷 12, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/toxins12090573
关键词
wheat; Fusarium graminearum; DON; Selenium compounds
资金
- National Key R&D Program: Intergovernmental Key Items for International Scientific and Technological Innovation Cooperation [2018YFE0107700]
- National Natural Science Foundation of China [31771772]
- State's Key Project of R&D Plan for Breeding of Top-seven Crops [2017YFD0100801]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Fusarium head blight (FHB) caused byFusarium graminearumnot only results in severe yield losses, but also contaminates wheat grains with deoxynivalenol (DON) toxins. Prevention and control of FHB and DON contamination rely mainly on resistant varieties and fungicides. Selenium (Se) is an essential element for humans and animals, and also a beneficial element for plants. In this work, four Se compounds, i.e., sodium selenite (Na2SeO3), sodium selenate (Na2SeO4), selenomethionine (SeMet) and selenocysteine (SeCys(2)), were supplemented in a trichothecene biosynthesis induction (TBI) solid medium at different dosages in in vitro experiments. The four Se compounds at the dosage of 20 mg center dot L(-1)were sprayed onto wheat spikes immediately after inoculation at anthesis. All four of the Se compounds significantly inhibited the mycelial growth and DON production in the in vitro experiment; however, in planta, their effects on FHB severity and toxin accumulation in grains were compound-dependent. SeMet consistently negatively regulated fungal growth and DON accumulation both in vitro and in planta, which could be a novel and proconsumer strategy for reducing the detriment of wheat FHB disease and DON accumulation.
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