Sulfur limitation increases duckweed starch accumulation without compromising growth
Sulfur limitation increases duckweed starch accumulation without compromising growth
Abstract Duckweeds contain relatively high levels of starch and are a potential biomass feedstock for biofuel production. Here, the biomass and starch yield of duckweed under three different nutrient-limited conditions were analyzed to investigate possible ways of further increasing the efficiency of starch production. The results showed that sulfur limitation resulted in the highest starch yield, which was 42% and 73% higher than in nitrogen or phosphorus limitation, respectively. The high yield of sulfur-limited duckweed is largely due to the combinations of little effects on biomass and high accumulations of starch. Although nitrogen limitation led to higher starch content (67.4%), it severely reduced biomass production. The photosynthetic performance indicator Fv/Fm was a simple and sensitive indicator of starch content in nutrient-limited duckweed. Taken together, this study demonstrates that sulfur limitation is a simple and efficient way to increase starch yield, highlighting the great potential of duckweed for biofuel production. We report that sulfur limitation is a practical approach to increase starch yields in duckweed without affecting growth or biomass. HighlightsSulfur limitation induces starch production in a duckweed specie.Nitrogen limitation triggers the highest starch content, but limits growth.Sulfur limitation results in the highest starch yield.Fv/Fm is a rapid and robust proxy of starch content in nutrient-limited duckweed.
Xu Shuqing、Duan Pengfei、Hou Hongwei、Sun Zuoliang、Guo Wenjun、Yang Jingjing、Zhao Xuyao
Institute for Evolution and Biodiversity, University of M¨1nsterCollege of Agricultural Engineering, Nanyang Normal UniversityThe State Key Laboratory of Freshwater Ecology and Biotechnology, The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences||University of Chinese Academy of SciencesThe State Key Laboratory of Freshwater Ecology and Biotechnology, The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences||University of Chinese Academy of SciencesThe State Key Laboratory of Freshwater Ecology and Biotechnology, The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences||University of Chinese Academy of SciencesThe State Key Laboratory of Freshwater Ecology and Biotechnology, The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences||University of Chinese Academy of SciencesThe State Key Laboratory of Freshwater Ecology and Biotechnology, The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences||University of Chinese Academy of Sciences
生物能、生物能机械设备生物化学生物工程学
DuckweedFv/Fmstarch contentstarch yieldsulfur limitation
Xu Shuqing,Duan Pengfei,Hou Hongwei,Sun Zuoliang,Guo Wenjun,Yang Jingjing,Zhao Xuyao.Sulfur limitation increases duckweed starch accumulation without compromising growth[EB/OL].(2025-03-28)[2025-04-28].https://www.biorxiv.org/content/10.1101/2021.02.22.432231.点此复制
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