Journal
PHYTOCHEMISTRY
Volume 70, Issue 9, Pages 1098-1106Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2009.06.001
Keywords
Nicotiana tobacum; Tobacco; Selenium; Volatiles; Methylselenocysteine; Selenocysteine methyltransferase; ATP-sulfurylase
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Funding
- New Zealand Foundation for Research, Science and Technology (FRST) [C06X0207]
- Vital Vegetables(R)
- Horticulture Australia Ltd.
- New Zealand Institute for Plant and Food Research Ltd.
- Victorian Department of Primary Industries
- New Zealand Vegetable and Potato Growers Federation Inc.
- Australian Vegetable and Potato Growers Federation Inc
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Nicotiana tabacum L. (tobacco) plants were transformed to overexpress a selenocysteine methyltransferase gene from the selenium hyperaccumulator Astragalus bisulcatus (Hook.) A. Gray (two-grooved milk-vetch), and an ATP-sulfurylase gene from Brassica oleracea L. var. italica (broccoli). Solvent extraction of leaves harvested from plants treated with selenate revealed five selenium-containing compounds, of which four were identified by chemical synthesis as 2-(methylseleno)acetaldehyde, 2,2-bis(methylseleno)acetaldehyde, 4-(methylseleno)-(2E)-nonenal, and 4-(methylseleno)-(2E,6Z)-nonadienal. These four compounds have not previously been reported in nature. (C) 2009 Elsevier Ltd. All rights reserved.
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