Abstract：
:HPLC analysis of crude dichloromethane extracts of shaken liquid cultures of the hyphomycetous fungusTolypocladium geodes Gams revealed the presence of efrapeptins. These peptides, which have mitochondrial ATPase inhibitory activity as well as antifungal and insecticidal properties, are previously known only from the congeneric species,T. niveum Rostrup. The identity of efrapeptins was confirmed by fast atom bombardment mass spectrometry and by amino acid analysis. HPLC analyses of efrapeptins extracted from single isolates of bothT. geodes andT. niveum indicated that both species produced the same efrapeptins but the profile of relative abundance of the compounds produced was diagnostic for the isolates examined. Efrapeptin F was the major component of the mixture fromT. geodes with the order of abundance of the six efrapeptins detected being F >G>D∼E>H>C. Efrapeptin D was the major component fromT. niveum with the order of abundance of the six efrapeptins detected being D >E>F>C∼G>H. Efrapeptin F diifers from efrapeptin D by a single amino acid residue, efrapeptin F having an alanine where efrapeptin D has a glycine. Addition of alanine to the culture medium increased the relative abundance of efrapeptin F in the profile of both species. Conversely, addition of glycine increased the relative abundance of efrapeptin D in the profile of both species.
journal_name
J Chem Ecoljournal_title
Journal of chemical ecologyauthors
Krasnoff SB,Gupta Sdoi
10.1007/BF00992580subject
Has Abstractpub_date
1991-10-01 00:00:00pages
1953-62issue
10eissn
0098-0331issn
1573-1561journal_volume
17pub_type
杂志文章abstract：:The metapleural gland is exclusive to ants, and unusual among exocrine glands in having no mechanism for closure and retention of secretion. As yet, no clear conclusion has been reached as to the function of metapleural gland secretion. Metapleural gland secretions were investigated for fungus-growing ants representin...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-012-0185-8
更新日期：2012-10-01 00:00:00
abstract：:Plants synthesize a wide range of bioactive secondary metabolites to defend against pests and pathogens. Red alder (Alnus rubra) bark, root, and leaf extract have a long history of use in traditional medicine and hygiene. Diarylheptanoids, especially oregonin ((5S)-1,7-bis(3,4-dihydroxyphenyl)-5-(β-D-xylopyranosyloxy)...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-021-01244-3
更新日期：2021-01-21 00:00:00
abstract：:Recently parasitoids were hypothesized to encounter a reliability-detectability problem relating to chemical stimuli from the first and second trophic level, when searching for hosts. The relative role of infochemicals originating from the host,Pieris brassicae (second trophic level), and its food plant, cabbage (firs...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00987470
更新日期：1993-01-01 00:00:00
abstract：:We conducted defoliation experiments with 7- to 8-year-old clones of Douglas fir [Pseudotsuga menziesii (Mirb.) Franco var. glauca] to assess the role of monoterpenes as a resistance mechanism to western spruce budworm (Choristoneura occidentalis Freeman) defoliation. The grafted clones were derived from mature trees ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1023/a:1015297315104
更新日期：2002-05-01 00:00:00
abstract：:Headspace extracts obtained from agar plate cultures of two marine bacteria from the North Sea (Germany), Loktanella strain BIO-204 and Dinoroseobacter shibae strain DFL-27, were analyzed by GC-MS. Several gamma-lactones and one delta-lactone were identified, besides pyrazines and some sulfur compounds. The absolute c...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-005-3553-9
更新日期：2005-04-01 00:00:00
abstract：:The grass webworm Herpetogramma licarsisalis (Lepidoptera: Crambidae), which has recently established in pasture in Northland, New Zealand, is an important pest of many tropical and subtropical grasses. Two pheromone components, (Z)-11-hexadecen-1-yl acetate (Z11-16:Ac) and (11Z,13E)-hexadecadien-1-yl acetate (Z11,E13...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-007-9259-4
更新日期：2007-04-01 00:00:00
abstract：:In 2002-2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (-)-alpha-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-009-9613-9
更新日期：2009-04-01 00:00:00
abstract：:The chemical composition of some volatile (2-heptanol) and nonvolatile constituents (a homologous 9-alkene/alkane series) of Mormolyca ringens flowers and Scaptotrigona sp. queen waxes (homologous 9-alkene/alkane series) and cephalic extracts (homologous series of 2-alkanols, including 2-heptanol) involved with the ps...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-006-9351-1
更新日期：2006-01-01 00:00:00
abstract：:Solid phase microextraction (SPME) has become a common technique for volatile sampling due to its ease of use and limited technical requirements. The solvent-free nature of SPME is also exceptionally attractive for gas chromatography mass spectrometry (GC/MS) analysis. To ensure efficient transfer of the sample to the...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-021-01247-0
更新日期：2021-01-18 00:00:00
abstract：:Rapid changes in the Earth's atmosphere and climate associated with human activity can have significant impacts on agriculture including livestock production. CO2 concentration has risen from the industrial revolution to the current time, and is expected to continue to rise. Climatic changes alter physiological proces...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-017-0820-5
更新日期：2017-03-01 00:00:00
abstract：:The alkaloids solanine and tomatine and the polyene antibiotic nystatin were tested in vitro against the entomopathogenic fungusBeauveria bassiana. Nystatin was the most inhibitory compound tested, reducing colony formation, growth, and development of conidiaphores to a greater degree and at lower concentrations than ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01014712
更新日期：1989-02-01 00:00:00
abstract：:Oxytropis lambertii has been considered to be one of the major locoweeds responsible for livestock poisoning on rangelands, but there has been much confusion as to its taxonomic identity. The objective of this study was to conduct a field survey of several populations of each of the three varieties [var. lambertii Pur...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1023/a:1015228507950
更新日期：2002-04-01 00:00:00
abstract：:The mating behaviour of the signal crayfish, Pacifastacus leniusculus (Dana), has been categorised into seven distinct stages: orientation; contact; seizure; turning; mounting; spermatophore deposition; and dismounting. These categories were used in the development of a bioassay to test whether mature females release ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1023/a:1022646414938
更新日期：2003-02-01 00:00:00
abstract：:Bracon hebetor is a larval ectoparasitoid that utilizes several pests belonging to the family Pyralidae (Lepidoptera) as hosts. In the present study, we analyzed the kairomonal response of this wasp to the male-produced sex pheromone of a host, the greater wax moth Galleria mellonella, an economically important pest o...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-010-9746-x
更新日期：2010-02-01 00:00:00
abstract：:Larvae of the mothUtetheisa ornatrix are shown to cannibalize eggs in the laboratory. They proved most cannibalistic if they were systemically deficient in pyrrolizidine alkaloid (PA), the defensive agent that protectsUtetheisa at all stages of development against predation, and whichUtetheisa acquire as larvae from t...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00987992
更新日期：1991-11-01 00:00:00
abstract：:Three different methods for the culture of rumen microorganisms (Hungate's technique, the Hohenheim in vitro gas production method, and the semicontinuous rumen simulation technique) were employed to study the influence of various alkaloids (sparteine, lupanine, cytisine, atropine, quinidine, lobeline, harmaline, arec...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-005-3543-y
更新日期：2005-04-01 00:00:00
abstract：:Carrion beetles of the subfamily Nicrophorinae search and bury a carcass that they utilize for reproduction. After burial, the carcass is coated with oral secretions that delay its decomposition. Previously, oral secretions of Nicrophorus marginatus were found to show antimicrobial activity, whereas secretion of N. ca...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-009-9680-y
更新日期：2009-08-01 00:00:00
abstract：:In nature, parasitoid wasps encounter and sometimes show oviposition behavior to nonhost species. However, little is known about the effect of such negative incidences on their subsequent host-searching behavior. We tested this effect in a tritrophic system of maize plants (Zea mays), common armyworms (hosts), tobacco...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-019-01064-6
更新日期：2019-04-01 00:00:00
abstract：:Cellulose triacetate was investigated as a chiral stationary phase for preparatively separating the enantiomers of lineatin, frontalin, exo-brevicomin, endo-brevicomin, verbenone, (E)-conophthorin, and grandisol. Tens of milligrams of both enantiomers were efficiently prepared in high percentage enantiomeric excess fr...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1023/a:1010380704106
更新日期：2001-03-01 00:00:00
abstract：:Chemical orientation of adult maleSchistosoma mansoni was studied during cultivation in vitro. Directional preference was assessed in culture vessels marked with compass coordinates by the application of circular statistics for determining clustering and orientation to a predicted direction. Organic solvent extracts o...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01022378
更新日期：1986-08-01 00:00:00
abstract：:Lodgepole pines, Pinus contorta Douglas ex Louden var. latifolia Engelm. ex S. Watson, are encountering increased abiotic stress and pest activity due to recent increases in temperature and changes in precipitation throughout their range. This tree species counters these threats by producing secondary metabolites, inc...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-011-9958-8
更新日期：2011-06-01 00:00:00
abstract：:Termite societies are abundant in the tropics, and are therefore exposed to multiple enemies and predators, especially during foraging activity. Soldiers constitute a specialized defensive caste, although workers also participate in this process, and even display suicidal behavior, which is the case with the species N...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-019-01098-w
更新日期：2019-09-01 00:00:00
abstract：:Cyclohexanone, a naturally occurring component of male Asian elephant temporal gland secretion, was tested as a candidate elicitor of bioresponses from female Asian elephants (Elephas maximus). Four female Asian elephants were presented with synthetic cyclohexanone samples during a standardized bioassay. Four types of...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF02098394
更新日期：1994-11-01 00:00:00
abstract：:Male-specific compounds, previously identified from Phyllotreta cruciferae and synthesized or isolated from natural sources, attracted both sexes of the beetle in field trials and therefore function as components of a male-produced aggregation pheromone. Six field experiments of 7 to 10 d duration each were conducted ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-005-5929-2
更新日期：2005-08-01 00:00:00
abstract：:Castilleja (Scrophulariaceae) species of the western United States contain pyrrolizidine and quinolizidine alkaloids. TheCastilleja obtain the alkaloids by root parasitism on host plants, withSenecio atratus andS. triangularis (Asteraceae) furnishing the pyrrolizidines, and quinolizidines being obtained fromLupinus sp...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01013240
更新日期：1987-08-01 00:00:00
abstract：:The European rabbit (Oryctolagus cuniculus) uses the secretion of the chin gland to maintain dominance hierarchies in the wild. Recent work has investigated changes in the secretion when social status is manipulated in the rabbit. When a rabbit becomes dominant, a new compound appears in his secretion, 2-phenoxyethano...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1023/a:1023836319677
更新日期：2003-05-01 00:00:00
abstract：:The analyses of virgin female sex pheromone gland extracts by gas chromatography (GC), GC-electroantennographic detection (GC-EAD) and GC-mass spectrometry (GC-MS) followed by field-trapping experiments, have identified (E)-9-tetradecenyl acetate (E9-14:Ac) as the primary sex pheromone component of the spruce budmoth,...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01020374
更新日期：1989-10-01 00:00:00
abstract：:The effects of differential leaf water, leaf nitrogen and cyclic hydroxamate (DIMBOA) concentrations in corn seedlings were analyzed for a polyphagous insect, the southern armyworm (Spodoptera eridania Cram.). Six different combinations of nutrients and allelochemicals [DIMBOA = 2,4-dihydroxy-7-methoxy(2H)-benzoxazin-...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01012193
更新日期：1985-11-01 00:00:00
abstract：:Tiger moths (Lepidoptera: Erebidae: Arctiinae: Arctiini) are notable for their specialized associations with hosts that produce toxic secondary compounds, and are thus an ideal study system for understanding insect-plant interactions and the evolution of antipredatory defense. Likewise, their sister lineage (Arctiinae...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-016-0799-3
更新日期：2017-01-01 00:00:00
abstract：:A bicyclic sesquiterpene dialdehyde, polygodial did not inhibit root elongation up to a concentration of 12.5 microg/ml in a lettuce seedling assay: trans-Cinnamic acid inhibited the elongation by 50% at 1.2 microg/ml (8.1 microM). The inhibitory activity of trans-cinnamic acid was enhanced 17-fold when used in combin...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1023/a:1026270329989
更新日期：2003-10-01 00:00:00
