Occurrence of loline alkaloids in Argyreia mollis (Convolvulaceae)*1

Tofern, Britta; Kaloga, M.; Witte, Ludger; Hartmann, Thomas; Eich, Eckart

doi:10.1016/s0031-9422(99)00121-1

Cited by 35 publications

(16 citation statements)

References 13 publications

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“…Column: 30 m × 0.25 mm; OV‐1; carrier gas: helium (14 psi); temperatures: injector, 250 °C; detector, 300 °C; GLC‐programme, 120 °C for 2 min, increase by 8 °C min −1 to 300 °C, then 6 min isothermal. MS: filament emission current, 200 μ A; electron energy, 70 eV; ion source, 175 °C; mass range, 60–650; scan time, 0.5 s. Alkaloids were identified according to MS spectra (Tofern et al. 1999).…”

Section: Methodsmentioning

confidence: 99%

Transfer of endophyte‐origin defensive alkaloids from a grass to a hemiparasitic plant

et al. 2005

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Plants growing in natural environments experience myriad interactions with a diverse assemblage of pathogens, parasites and mutualists. Many of these interactions involve symbiotic bacteria and fungi, but they also include macroparasitic plants. In this study, we investigated the interactions among a host grass (Lolium pratense, ex., Festuca pratensis), its symbiotic endophytic fungus (Neotyphodium uncinatum), a root hemiparasitic plant (Rhinanthus serotinus) of the host grass and a generalist herbivore (aphid Aulacorthum solani) of the hemiparasite. We demonstrate that the hemiparasitic plant acquires defending mycotoxins produced by the endophytic fungus living within their shared host grass. The uptake of defensive mycotoxins from the endophyte-infected host grass enhances the resistance of the hemiparasitic plant to the generalist aphid herbivore. Endophyte infection increases the performance of the hemiparasitic plant, but reduces the growth of the host grass. In other words, the mutualistic endophytic fungus becomes parasitic in the presence of the hemiparasitic plant. Our results suggest that the outcomes of grassendophyte interactions are conditional on the complexity of community-level interactions; thus, the outcome of multispecies interactions may not be predictable from pair-wise combinations of species.

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Section: Methodsmentioning

confidence: 99%

Transfer of endophyte‐origin defensive alkaloids from a grass to a hemiparasitic plant

et al. 2005

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“…For example, alkaloids produced by endophytic fungi in the genus Neotyphodium could confer deterrence to their host plants, increasing their survival from the attacks by insects. With the increased stress tolerance, host plants infected by endophytic fungi could outcompete native plants without fungal infection, and consequently became invasive (Tofern et al, 1999 ; Clement et al, 2005 ).…”

Section: Beneficial Relationships Conferred By Endophytic Fungi To Homentioning

confidence: 99%

A Friendly Relationship between Endophytic Fungi and Medicinal Plants: A Systematic Review

et al. 2016

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Endophytic fungi or endophytes exist widely inside the healthy tissues of living plants, and are important components of plant micro-ecosystems. Over the long period of evolution, some co-existing endophytes and their host plants have established a special relationship with one and another, which can significantly influence the formation of metabolic products in plants, then affect quality and quantity of crude drugs derived from medicinal plants. This paper will focus on the increasing knowledge of relationships between endophytic fungi and medicinal plants through reviewing of published research data obtained from the last 30 years. The analytical results indicate that the distribution and population structure of endophytes can be considerably affected by factors, such as the genetic background, age, and environmental conditions of their hosts. On the other hand, the endophytic fungi can also confer profound impacts on their host plants by enhancing their growth, increasing their fitness, strengthening their tolerances to abiotic and biotic stresses, and promoting their accumulation of secondary metabolites. All the changes are very important for the production of bioactive components in their hosts. Hence, it is essential to understand such relationships between endophytic fungi and their host medicinal plants. Such knowledge can be well exploited and applied for the production of better and more drugs from medicinal plants.

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“…Lolines have also been isolated from the plant Argyreia mollis (Burm. F) Choisy (Convolvulaceae), being this alkaloid absent from other species of this genus, suggesting that endophytes were responsible for the specific presence of these compounds [152]. …”

Section: Plant-herbivore-endophytementioning

confidence: 99%

Fungal Endophytes and their Role in Plant Protection

Giménez

Cabrera²,

Reina

et al. 2007

COC

102

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Endophytes (fungal and bacterial organisms) have attracted great interest over the past few years because their presence benefits the host plant (development and defence) and they are a source of secondary metabolites of potential interest and thus play an important role in the regulation of plant communities and their herbivores. There are an increasing number of reports on their identification and on the production of secondary metabolites. Their role in plant-pathogen and plant-insect interactions is receiving increasing attention because of their potential use in pest control, however, little is known about their physiology and the regulation processes of the plant-endophyte interaction.

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Occurrence of loline alkaloids in Argyreia mollis (Convolvulaceae)*1

Cited by 35 publications

References 13 publications

Transfer of endophyte‐origin defensive alkaloids from a grass to a hemiparasitic plant

Transfer of endophyte‐origin defensive alkaloids from a grass to a hemiparasitic plant

A Friendly Relationship between Endophytic Fungi and Medicinal Plants: A Systematic Review

Fungal Endophytes and their Role in Plant Protection

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