Library

X
Language
Preferred search index
Number of Hits per Page
Default Sort Criterion
Default Sort Ordering
Size of Search History
Default Email Address
Default Export Format
Default Export Encoding
Facet list arrangement
Maximum number of values per filter
Auto Completion
Feed Format
Maximum Number of Items per Feed
Permalink If you want to be able to use settings permanently, you must save your settings and then set a Bookmark to the permalink
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Endophyte-infected grasses  (1)
  • host plant resistance  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Influence of endophyte infection, plant age and harvest interval on Rhopalosiphum padi survival and its relation to quantity of N-formyl and N-acetyl loline in tall fescue (1991)
    Springer
    Entomologia experimentalis et applicata 60 (1991), S. 29-38 
    Details
    ISSN: 1570-7458
    Keywords: Festuca arundinacea ; pyrrolizidine alkaloids ; Acremonium coenophialum ; host plant resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rhopalosiphum padi L. (Homoptera: Aphididae) is sensitive to loline alkaloids present in tall fescue, Festuca arundinacea Shreb., infected with the endophytic fungus, Acremonium coenophialum Morgan-Jones & Gams. Aphid survival was higher on endophyte-free plants regardless of plant age after germination or age of regrowth tissue after clipping. Survival of aphids on endophyte-infected grass was lower on young tissue but increased as plants aged, although it never reached the same level on endophyte-free plants. Both N-formyl and N-acetyl loline increased as uncut or regrowth tissue aged; however, this was influenced by the age of the plant at the initial cut and the clipping frequency. Although even small amounts of loline cause high aphid mortality, the aphids are able to survive on endophyte-infected plants if the tillers have senescing leaves which contain lower amounts of loline. Preference for senescing leaves may help R. padi avoid plant parts containing high amounts of toxic allelochemicals, thus contributing to higher numbers of aphids on older, endophyte-infected plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00164956
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Fungal endophyte-infected grasses: Alkaloid accumulation and aphid response (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 3301-3315 
    Details
    ISSN: 1573-1561
    Keywords: Endophyte-infected grasses ; Acremonium ; endophytes ; Epichloe typhina ; grass alkaloids ; lolines ; ergovaline ; peramine ; lolitrem B ; aphid responses ; plant resistance to herbivory ; Rhopalosiphum padi ; Schizaphis graminum ; Homoptera ; Aphididae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The occurrence of the alkaloidsN-formyl andN-acetyl loline, peramine, lolitrem B, and ergovaline and the response of aphids to plants containing these compounds were determined in species and cultivars ofFestuca,Lolium, and other grass genera infected with fungal endophytes (Acremonium spp., andEpichloe typhina). Twenty-nine of 34 host-fungus associations produced one or more of the alkaloids, most frequently peramine or ergovaline. Three alkaloids (lolines, peramine, and ergovaline) were found in tall fescue and in perennial ryegrass infected withA. coenophialum, while peramine, lolitrem B, and ergovaline were present in perennial ryegrass and in tall fescue infected withA. lolii and inF. longifolia infected withE. typhina. WhileA. coenophialum andA. lolii produced similar patterns of alkaloids regardless of the species or cultivar of grass they infected, isolates ofE. typhina produced either no alkaloids or only one or two different alkaloids in the grasses tested. Aphid bioassays indicated thatRhopalosiphum padi andSchizaphis graminum did not survive on grasses containing loline alkaloids and thatS. graminum did not survive on peramine-containing grasses. Ergovaline-containing grasses did not affect either aphid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00982100
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...