Transfer of alkaloids from Delphinium to Castilleja via root parasitism. Norditerpenoid alkaloid analysis by electrospray mass spectrometry

Marko, Michelle D.; Stermitz, Frank R.

doi:10.1016/s0305-1978(97)00010-0

Cited by 29 publications

(26 citation statements)

References 8 publications

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“…The genetic similarity of our mutant and wild-type hosts minimized the potential for other variables to alter host-herbivore interactions and, thus, supports the interpretation that host secondary metabolites, in this case glucosinolates, can increase the resistance of the parasite. Therefore, our findings lend credibility to the suggestion that host-species effects on parasite-herbivore ecology may be explained by the transfer of host secondary metabolites (Marko, 1996;Loveys and Tyerman, 2001;Adler, 2002).…”

Section: Discussionsupporting

confidence: 83%

“…Relatively few studies have examined parasite defense enhancement by host secondary metabolites, and to our knowledge, this study is unique in focusing on glucosinolates (others focused on various alkaloids and one terpenoid) and also on using mutant host plants, rather than different host species or isolines, to manipulate the level of host secondary metabolites (Stermitz et al, 1989;Marko, 1996;Marvier, 1998;Adler, 2000Adler, , 2002Adler, , 2003Adler et al, 2001;Loveys and Tyerman, 2001). The genetic similarity of our mutant and wild-type hosts minimized the potential for other variables to alter host-herbivore interactions and, thus, supports the interpretation that host secondary metabolites, in this case glucosinolates, can increase the resistance of the parasite.…”

Section: Discussionmentioning

confidence: 99%

“…For example, herbivore success in feeding on particular parasite species has been shown to vary when the parasite feeds on different hosts (Harvey, 1966;Marvier, 1996Marvier, , 1998Adler, 2002;Schädler et al, 2005;Rowntree et al, 2014), but this variation could be influenced by a wide range of factors other than host secondary metabolites, including parasite biomass accumulation (Rowntree et al, 2014), nitrogen content (Marvier, 1998), volatile emission patterns (Troncoso et al, 2010), and, presumably, parasite endogenous defenses. Consequently, it is hardly surprising that studies noting the transfer of insect-deterrent secondary metabolites into parasitic plants have reported inconsistent effects on insect herbivores (Stermitz et al, 1989;Marko, 1996;Marvier, 1996;Loveys and Tyerman, 2001;Adler, 2002;Adler, 2003), as few studies (Adler, 2000;Adler et al, 2001) effectively controlled for other potential influences of the host species on parasite resistance to (or quality for) herbivores. Furthermore, given the heavy focus on alkaloids in previous empirical work, the effects of other classes of host-derived secondary metabolites on parasite-herbivore interactions remain largely unexplored.…”

mentioning

confidence: 99%

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Glucosinolates from Host Plants Influence Growth of the Parasitic Plant Cuscuta gronovii and Its Susceptibility to Aphid Feeding

Smith

Woldemariam²,

Mescher

et al. 2016

Plant Physiol.

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Parasitic plants acquire diverse secondary metabolites from their hosts, including defense compounds that target insect herbivores. However, the ecological implications of this phenomenon, including the potential enhancement of parasite defenses, remain largely unexplored. We studied the translocation of glucosinolates from the brassicaceous host plant Arabidopsis (Arabidopsis thaliana) into parasitic dodder vines (Convolvulaceae; Cuscuta gronovii) and its effects on the parasite itself and on dodder-aphid interactions. Aliphatic and indole glucosinolates reached concentrations in parasite tissues higher than those observed in corresponding host tissues. Dodder growth was enhanced on cyp79B2 cyp79B3 hosts (without indole glucosinolates) but inhibited on atr1D hosts (with elevated indole glucosinolates) relative to wild-type hosts, which responded to parasitism with localized elevation of indole and aliphatic glucosinolates. These findings implicate indole glucosinolates in defense against parasitic plants. Rates of settling and survival on dodder vines by pea aphids (Acyrthosiphon pisum) were reduced significantly when dodder parasitized glucosinolate-producing hosts (wild type and atr1D) compared with glucosinolate-free hosts (cyp79B2 cyp79B3 myb28 myb29). However, settling and survival of green peach aphids (Myzus persicae) were not affected. M. persicae population growth was actually reduced on dodder parasitizing glucosinolate-free hosts compared with wild-type or atr1D hosts, even though stems of the former contain less glucosinolates and more amino acids. Strikingly, this effect was reversed when the aphids fed directly upon Arabidopsis, which indicates an interactive effect of parasite and host genotype on M. persicae that stems from host effects on dodder. Thus, our findings indicate that glucosinolates may have both direct and indirect effects on dodder-feeding herbivores.Parasitic plants make their living by extracting resources from other plants and, therefore, share many of the same ecological challenges faced by other plantfeeding organisms, including the need to acquire appropriate hosts and overcome host defenses (Runyon et al

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Glucosinolates from Host Plants Influence Growth of the Parasitic Plant Cuscuta gronovii and Its Susceptibility to Aphid Feeding

Smith

Woldemariam²,

Mescher

et al. 2016

Plant Physiol.

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“…This has been shown for Castilleja, Pedicularis and Orthocarpus parasitic genera of the Scrophulariaceae closely related to Melampyrum (Stermitz and Harris 1987;Stermitz et al 1989;Boros et al 1991;Mead et al 1992;Marvier 1996;Adler 2002). Marko and Stermitz (1997) found a similar spectrum of alkaloids in Delphinium and its parasite Castilleja, suggesting a non-selective uptake of these compounds. However, in our study there was no positive correlation between the palatability of the leaves of a host and those of the parasite grown on that host.…”

Section: Palatability Of Hosts and Hemiparasites To Generalist Herbivsupporting

confidence: 57%

Is palatability of a root-hemiparasitic plant influenced by its host species?

et al. 2005

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Palatability of parasitic plants may be influenced by their host species, because the parasites take up nutrients and secondary compounds from the hosts. If parasitic plants acquired the full spectrum of secondary compounds from their host, one would expect a correlation between host and parasite palatability. We examined the palatability of leaves of the root-hemiparasite Melampyrum arvense grown with different host plants and the palatability of these host plants for two generalist herbivores, the caterpillar of Spodoptera littoralis and the slug Arion lusitanicus. We used 19 species of host plants from 11 families that are known to contain a wide spectrum of anti-herbivore compounds. Growth of M. arvense was strongly influenced by the host species. The palatability of the individual host species for the two herbivores differed strongly. Both A. lusitanicus and S. littoralis discriminated also between hemiparasites grown with different host plants. There was no correlation between the palatability of a host species and that of the parasites grown on that host, i.e., hemiparasites grown on palatable host species were not more palatable than those grown on unpalatable hosts. We suggest an interacting pattern of specific effects of chemical anti-herbivore defences and indirect effects of the hosts on herbivores through effects on growth and tissue quality of the parasites.

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“…Studies by Stermitz and Harris (1987), Stermitz et al (1989), Bäumel et al (1991), Wink and Witte (1993), Bäumel et al (1995) and Marko and Stermitz (1997) have documented the transfer of large alkaloid compounds between host and parasite. Eight tetranortriterpene limonoid compounds, thought to be specific to M. azedarach, have been isolated and named melia-toxins (Oelrichs et al 1983;Takeya et al 1996).…”

Section: Discussionmentioning

confidence: 99%

Untitled

Tyerman¹,

Loveys²

2001

Aust. J. Bot.

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Plant hemiparasites obtain a wide range of primary compounds from their host plants, including carbon, water and ions. In this paper, we examine the transfer of carbon from the host plant Myoporum parvifolium and the movement of an insecticidal compound from the host Melia azedarach to the root hemiparasite Santalum acuminatum (R.Br) (quandong). By using 14 C we determined that glucose was moving from the M. parvifolium host to the parasite while the carbon fixed by quandongs was found to be mostly in mannitol. Mannitol occurred in fruit, leaf, stem and root tissue and also in xylem sap. We also provide evidence from direct infusion electrospray mass spectrometry (DIEMS) that quandong fruit from trees growing near Melia azedarach (L.) contain an insecticidal compound. This was supported by results from a bioassay in which apple moth (Epiphyas postvittana Walker) larvae suffered higher mortality when fed only on quandong fruit that was growing near M. azedarach than those fed on quandong fruit from trees growing away from M. azedarach. B . R . L o ve ys , S . D. T ye r ma n, B. R. Lo v ey s B T9 90 8 0 B . R . L ov e ys O rg a ni c -C tr a ns f er f ro m h os t s t o t h e h em ip a ra s it e S. ac u mi na t um e t a l .

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Transfer of alkaloids from Delphinium to Castilleja via root parasitism. Norditerpenoid alkaloid analysis by electrospray mass spectrometry

Cited by 29 publications

References 8 publications

Glucosinolates from Host Plants Influence Growth of the Parasitic Plant Cuscuta gronovii and Its Susceptibility to Aphid Feeding

Glucosinolates from Host Plants Influence Growth of the Parasitic Plant Cuscuta gronovii and Its Susceptibility to Aphid Feeding

Is palatability of a root-hemiparasitic plant influenced by its host species?

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