Organoselenides from Nicotiana tabacum genetically modified to accumulate selenium

Four organoselenides, 2-(methylseleno)acetaldehyde, 2,2-bis(methylseleno)acetaldehyde, 4-(methylseleno)-(2E)-nonenal, and 4-(methylseleno)-(2E,6Z)-nonadienal, were identified in leaf extracts of tobacco (Nicotiana tabacum) that was genetically modified to overexpress genes for selenium accumulation, and treated with inorganic selenium.