importance of quinolizidine alkaloids in the relationship between larvae ofuresiphita reversalis (lepidoptera: pyralidae) and a host plant,genista monspessulana. | larvae ofuresiphita reversalis feed almost exclusively on legumes in the tribe genisteae, which characteristically contain a variety of quinolizidine alkaloids. the larvae are aposematic, and ongenista monspessulana, a major host in california, they feed on the youngest leaves, at the periphery of the plant. these leaves, which were preferred over older foliage in choice tests, contained four to five times the level of alkaloid found in older leaves. the major alkaloids detected in these plants ... | 1990 | 24263989 |
a molecular phylogenetic analysis of invasive and ornamental brooms and their relationships within the genistoid legumes. | the cytisus-genista complex includes species that have become invasive following introduction into new geographic ranges as ornamental shrubs. despite their impacts, the evolutionary relationships among invasives, ornamentals, and native-range species have never been investigated. our objective was to examine relationships within the cytisus-genista complex to determine (1) the taxonomic identity of invasive "french broom" and ornamental "sweet broom" and (2) whether "sweet broom" contributes to ... | 2011 | 21925614 |
modulation of neuronal nicotinic receptor by quinolizidine alkaloids causes neuroprotection on a cellular alzheimer model. | alzheimer's disease (ad) is a progressive and neurodegenerative disorder and one of the current therapies involves strengthening the cholinergic tone in central synapses. neuroprotective properties for nicotine have been described in ad, through its actions on nicotinic receptors and the further activation of the pi3k/akt/bcl-2 survival pathway. we have tested a quinolizidine alkaloid extract (tm0112) obtained from teline monspessulanna (l.) k. koch seeds to evaluate its action on nicotinic acet ... | 2014 | 24825567 |
prediction of the geographic distribution of the psyllid, arytinnis hakani (homoptera: psyllidae), a prospective biological control agent of genista monspessulana, based on the effect of temperature on development, fecundity, and survival. | the psyllid, arytinnis hakani (loginova), is a prospective biological control agent of genista monspessulana (french broom), an invasive shrub originating from western europe. it is a multivoltine species that is not known to diapause. the insect is established in australia, where it appears to cause heavy defoliation and mortality of the target weed, except at warm sunny sites. this suggests that bright light or high temperatures may hamper the agent. we measured the effect of temperature on de ... | 2014 | 25199116 |
neuroactive alkaloids that modulate the neuronal nicotinic receptor and provide neuroprotection in an alzheimer's disease model: the case of teline monspessulana. | | 2014 | 25558235 |
temporal patterns in the abundance and species composition of spiders on host plants of the invasive moth epiphyas postvittana (lepidoptera: tortricidae). | generalist predators such as spiders may help mitigate the spread and impact of exotic herbivores. the lack of prey specificity and long generation times of spiders may allow them to persist when pests are scarce, and to limit the growth of pest populations before they reach damaging levels. we examined whether resident spiders are likely to play a role in maintaining populations of the invasive light brown apple moth, epiphyas postvittana (walker) (lepidoptera: tortricidae), below outbreak leve ... | 2017 | 28379400 |
impacts of the psyllid arytinnis hakani (homoptera: psyllidae) on invasive french broom in relation to plant size and psyllid density. | the impacts of weed biological control agents may vary with plant ontogeny. as plants grow, structural and chemical changes can alter plant resistance, which may reduce herbivory via chemical or structural defenses, and plant tolerance, which may enable plants to maintain fitness despite attack. resistance and tolerance generally increase as plants grow. nonetheless, prerelease tests of agent efficacy often overlook plant ontogeny. here, we assess the performance and impacts of a candidate bioco ... | 2017 | 28402389 |
light brown apple moth in california: a diversity of host plants and indigenous parasitoids. | the light brown apple moth, epiphyas postvittana (walker), an australia native tortricid, was found in california in 2006. a field survey of host plants used by e. postvittana was conducted in an urban region of the san francisco bay area. an inspection of 152 plant species (66 families), within a 23-ha residential community, found e. postvittana on 75 species (36 families). most (69 species) host plants were not australian natives, but had a wide geographic origin; 34 species were new host reco ... | 2012 | 22525062 |
diversity of rhizobia nodulating wild shrubs of sicily and some neighbouring islands. | legume shrubs have great potential for rehabilitation of semi-arid degraded soils in mediterranean ecosystems as they establish mutualistic symbiosis with n-fixing rhizobia. eighty-eight symbiotic rhizobia were isolated from seven wild legume shrubs native of sicily (southern italy) and grouped in operational taxonomic units (otu) by analysis of the ribosomal internal transcribed spacer (its) polymorphism. partial sequencing of 16s rrna gene of representative isolates of each otu revealed that m ... | 2008 | 18566799 |