Effects of selenite on chlorophyll fluorescence, starch content and fatty acid in the duckweed Landoltia punctata
详细信息 查看全文
- 作者：Yu Zhong ; Yang Li ; Jay J. Cheng
- 刊名：Journal of Plant Research
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：129
- 期：5
- 页码：997-1004
- 全文大小：785 KB
- 刊物类别：Biomedical and Life Sciences
- 刊物主题：Life Sciences
Plant Sciences
Plant Ecology
Plant Physiology
Plant Biochemistry - 出版者：Springer Japan
- ISSN：1618-0860
- 卷排序：129
文摘
Developing a Se-enriched feed for animal has become a considerable effort. In this study, Landoltia punctata 7449 was grown over a 12 day period under concentrations of selenite (Na2SeO3) from 0 to 80 μmol L−1. The growth rate, the chlorophyll fluorescence, the starch content and fatty acid were measured. Se at low concentrations of ≤20 μmol L−1 had positive effects also on growth rate, fatty acid content and yield of the L. punctata. The appropriate Se treatment enhanced the activity of the photosynthetic system by increasing Fv, Fm, Fv/Fm and Fv/Fo and decreasing Fo. However, negative impact to the L. punctata was observed when the duckweed was exposed to high Se concentrations (≥40 μmol L−1). Significant increases in starch content in the duckweed were observed after Se application. The present study suggests that the changes in growth rate, the photosynthetic system, the starch content and the fatty acid were closely associated with the application of Se. An increased Se concentration (0–20 μmol L−1) in duckweed could positively induce photosynthesis, thereby increasing the yield of L. punctata and could be a resource for high nutritive quality Se-enrich feed.KeywordsDuckweedSeleniumChlorophyll fluorescenceStarchFatty acid