By Bogert M.T.
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Additional info for Researches on Selenium Organic Compounds V. A Simple Method for the Synthesis of 2-Substituted Benzoselenazoles
Liatris punctata Picea engelmannii Delphinium occidentale Lolium temulentum Arceutholobium microcarpum Castilleja sulphurea Rhinanthus minor References fungus, it acquires the fungal toxins (the pyrrolizidine alkaloid loline). If Lolium was parasitized by Rhinanthus minor, a second transfer was observed into the hemiparasite, which could increase its ﬁtness through this sequestration . 5 Conclusions Alkaloids are not waste products but have evolved mainly as defense compounds against herbivores, but also against microbes, competing other plants, and even viruses.
1990) Secondary Metabolism in Microorganisms, Plants and Animals, Springer, Heidelberg. 23 24 1 Ecological Roles of Alkaloids 12 Wink, M. (1999) Biochemistry of plant 13 14 15 16 17 18 19 20 21 22 secondary metabolism, Annual Plant Reviews, Vol. 2 Shefﬁeld Academic Press, Shefﬁeld. Wink, M. (1999) Function of plant secondary metabolites and their exploitation in biotechnology, Annual Plant Reviews, Vol. 3 Shefﬁeld Academic Press, Shefﬁeld. Mann, J. (1992) Murder, Magic and Medicine, Oxford University Press, London.
It could be a target-site modiﬁcation as observed for cardiac glycosides at the Naþ/Kþ-ATPase in Monarch butterﬂies  or simply sequestration in tissues or cells without corresponding targets. A comparable situation to insect specialists can be found in parasitic and hemiparasitic plants, another example of multitrophic interactions. In several instances it can be shown that the parasites can tap the xylem or phloem of their host plants and sequester the host alkaloids into their own system [2,31].
Researches on Selenium Organic Compounds V. A Simple Method for the Synthesis of 2-Substituted Benzoselenazoles by Bogert M.T.