Abstract：
:Mutualistic associations such as the fungal farms of insects are prone to parasitism and are consequently vulnerable to attack by weeds and pests. Therefore, efficient farm management requires quick detection of weeds for their elimination. Furthermore, if the available weedicides are non-specific, then the ability of insects to discriminate between crop and weeds becomes essential for targeted application of such compounds. Here, we demonstrate for the first time in fungus-farming insects, that worker castes of the fungus-growing termite Odontotermes obesus discriminate between their crop (Termitomyces) and the weedy (Pseudoxylaria) fungi, even if exposed to only fungal scents. Termites respond to the presence of fungal mycelium or scent alone, by burying the weed with the offered material such as soil or agar, possibly anointing the weed with chemicals in the process. The scent profiles of crop and weedy fungi are distinct and the differences are likely exploited by termites to selectively mount their defences. Sesquiterpene compounds such as aristolene and viridiflorol, which are absent from crop odours, may constitute the "weedy scent". Our results provide a general mechanism of how other fungus-farming insects could avoid indiscriminate application of non-specific fungicides which could lead to poisoning their crops, and have bearing on the stability of the mutualism between termites and their crop fungus in the face of parasitism by weedy fungi.
journal_name
J Chem Ecoljournal_title
Journal of chemical ecologyauthors
Katariya L,Ramesh PB,Gopalappa T,Desireddy S,Bessière JM,Borges RMdoi
10.1007/s10886-017-0902-4subject
Has Abstractpub_date
2017-10-01 00:00:00pages
986-995issue
10eissn
0098-0331issn
1573-1561pii
10.1007/s10886-017-0902-4journal_volume
43pub_type
杂志文章abstract：:By utilizing one- and two-dimensional nuclear magnetic resonance techniques, the complete assignments of the proton and carbon spectra of the lactones anastrephin, epianastrephin, and suspensolide have been accomplished. These compounds are pheromone components for both the Caribbean and Mexican fruit flies. The relat...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00984894
更新日期：1993-07-01 00:00:00
abstract：:A previous study showed that Sitka black-tailed deer (Odocoileus hemionus sitkensis) consumption was negatively correlated with monoterpene content in western redcedar (Thuja plicata). To test whether these monoterpenes were deterrent to Sitka black-tailed deer, we performed feeding choice experiments with four hydroc...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1023/a:1021423816695
更新日期：2002-12-01 00:00:00
abstract：:We focus this mini-review on how naturally occurring chemical cues mediate ecological interactions, especially interspecific competition and predation in freshwater communities. Although freshwater chemical ecology lags behind terrestrial and marine chemical ecology, we identify recent progress toward: (1) identifying...
journal_title：Journal of chemical ecology
pub_type： 杂志文章,评审
doi：10.1023/a:1020785525081
更新日期：2002-10-01 00:00:00
abstract：:The foliage and fruit of the tomato plantLycopersicon esculentum contains polyphenol oxidases (PPO) and peroxidases (POD) that are compartmentally separated from orthodihydroxyphenolic substrates in situ. However, when leaf tissue is damaged by insect feeding, the enzyme and phenolic substrates come in contact, result...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01014725
更新日期：1989-12-01 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：:Previous work identified aphids and caterpillars as having distinct effects on plant responses to herbivory. We sought to decipher these interactions across different levels of biological organization, i.e., molecular, biochemical, and organismal, with tomato plants either damaged by one 3rd-instar beet armyworm cater...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-010-9854-7
更新日期：2010-10-01 00:00:00
abstract：:The redbay ambrosia beetle, Xyleborus glabratus Eichhoff, is an exotic wood-boring insect that vectors the mycopathogen responsible for laurel wilt, a lethal vascular disease of trees in the Lauraceae. High mortality has occurred in native Persea species in the southeastern U.S., and the vector-pathogen complex poses ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-011-9998-0
更新日期：2011-09-01 00:00:00
abstract：:In spite of the importance of chemoreception in social organization and sexual selection of lizards, there is a lack of general knowledge on how the characteristics of chemical signals mediate these behaviors. Moreover, it is unknown which are the mechanisms that might confer honesty to the information provided by che...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-005-9012-9
更新日期：2006-02-01 00:00:00
abstract：:Sasa (Sasa cernua Makino) is a very serious weed pest. Its allelopathy was studied using lettuce, wheat, timothy, and green amaranth as testing species. Cultured in the rhizosphere soil ofSasa cernua, the seedlings were inhibited by 42-80% compared with the controls cultured in normal soil and vermiculite. The phenoli...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF02751103
更新日期：1992-10-01 00:00:00
abstract：:Defensive mutualism is widely accepted as providing the best framework for understanding how seed-transmitted, alkaloid producing fungal endophytes of grasses are maintained in many host populations. Here, we first briefly review current knowledge of bioactive alkaloids produced by systemic grass-endophytes. New findi...
journal_title：Journal of chemical ecology
pub_type： 杂志文章,评审
doi：10.1007/s10886-013-0310-3
更新日期：2013-07-01 00:00:00
abstract：:Potato cyst nematodes (PCNs) are a major pest of solanaceous crops such as potatoes, tomatoes, and eggplants and have been widely studied over the last 30 years, with the majority of earlier studies focusing on the identification of natural hatching factors. As a novel approach, we focused instead on chemicals involve...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-012-0105-y
更新日期：2012-06-01 00:00:00
abstract：:The parsnip webworm,Depressaria pastinacella (Lepidoptera: Oecophoridae), feeds on plants rich in furanocoumarins, phototoxic allomones. Final-instar larvae possess high levels of activities of antioxidant enzymes (Superoxide dismutase, catalase, glutathione reductase), which detoxify oxygen radicals generated from th...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01017468
更新日期：1990-08-01 00:00:00
abstract：:Acrolepiopsis assectella andPlutella xylostella frass volatiles, trapped on Tenax GC, were examined by capillary gas chromatography. In both moths, the same three disulfides, dimethyl, dipropyl, and methyl propyl, were the most abundant substances, but in different proportions. The synthetic disulfides elicited the sa...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01014838
更新日期：1989-04-01 00:00:00
abstract：:Red imported fire ants, Solenopsis invicta Buren, build nests by excavating soil. Incorporation of ant-derived chemicals in nesting material has long been known; however, only a few chemicals have been identified. This paucity of identified ant-derived chemicals may be due to the interference from soil-borne compounds...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-006-9249-y
更新日期：2007-03-01 00:00:00
abstract：:The sorghum shootfly,Atherigona soccata, under low population density conditions lays one egg per sorghum plant. Possible regulatory mechanisms of this oviposition behavior are reported. The presence of an egg thoroughly washed and reattached to a leaf does not deter further oviposition, indicating the absence of visu...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00992377
更新日期：1981-09-01 00:00:00
abstract：:The structure elucidation of sex pheromones of Lepidoptera by a solid-sample injection technique in conjunction with capillary gas chromatography is described. The applicability of this method in GC and GC-MS modes was demonstrated by reanalyzing the sex attractants of females ofOstrinia nubilalis andBombyx mori. The ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01020556
更新日期：1987-05-01 00:00:00
abstract：:Results of experiments conducted on ink recovered from the squid Sepioteuthis australis indicate that there is no epinephrine or protein naturally present in the ink as it would be ejected in vivo. Protein content was effectively zero when ink was syringed from the duct end of the ink sac of freshly killed animals. By...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-010-9869-0
更新日期：2010-11-01 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：:Olfactometer bioassays showed that odors from mature Thyanta perditor males attracted females but not males. Furthermore, odors from females did not attract either sex, indicating that like other phytophagous pentatomid bugs, the males produce a sex pheromone. Attraction appeared to peak in late afternoon to evening. ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-005-5294-1
更新日期：2005-06-01 00:00:00
abstract：:The parasitoidsB. intermedia andB. lasus aggregate at sites previously frequented. Extracts from filter paper conditioned by aggregated parasitoids were chromatographed (adsorption column and gas-liquid chromatography) and bioassayed. An active component that elicited aggregation response forB. intermedia was isolated...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01012285
更新日期：1987-06-01 00:00:00
abstract：:The identification of pheromones and chemicals that may inhibit or stimulate growth and reproduction necessarily leads to the consideration of biochemical methods to isolate and characterize these molecules. Analysis ofSchistosoma mansoni surface antigens by direct radioiodination, metabolic labeling with tritiated an...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01022388
更新日期：1986-08-01 00:00:00
abstract：:To evaluate methods for promoting consumption of tamarisk plants by beavers (Castor canadensis), we determined the feeding responses by captive beavers to diets that contained tannins and sodium chloride (hereafter referred to as tamarisk diet). In two-choice tests, beavers consumed equivalent quantities of tamarisk d...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-008-9496-1
更新日期：2008-08-01 00:00:00
abstract：:Coupled gas chromatographic (GC)-electroantennographic detection (EAD) analyses of ovipositor extract of calling Hessian fly, Mayetiola destructor, females revealed that seven compounds elicited responses from male antennae. Four of the compounds-(2S)-tridec-2-yl acetate, (2S,10Z)-10-tridecen-2-yl acetate, (2S,10E)-10...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-008-9569-1
更新日期：2009-01-01 00:00:00
abstract：:Female sex pheromones ofPeriplaneta americana, P. australasiae, andBlatta orientalis elicit locomotion and upwind orientation in conspecific males. Interspecific attraction between these species was observed in a wind tunnel assay for most species combinations, with the exception ofP. australasiae males not being attr...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00988196
更新日期：1985-02-01 00:00:00
abstract：:Olfactory reception of potential pheromones and host-plant odors by male and female tarnished plant bugs (TPBs),Lygus lineolaris (Hemiptera: Miridae), was investigated by utilizing electroantennogram (EAG) techniques. In general, EAGs were similar between the sexes. Among 31 compounds of seven chemical groups tested, ...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF02033724
更新日期：1994-12-01 00:00:00
abstract：:Females of the gregarious endoparasitoid Cotesia kariyai were attracted to a blend of volatiles released from corn plants infested with larvae of their host, the common armyworm (Mythimna separata). We investigated the effects of time after the last infestation (1-168 h) on the attractiveness of corn plants infested b...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-011-9915-6
更新日期：2011-03-01 00:00:00
abstract：:Fertile queens of the antMonomorium pharaonis produce a chemical substance which is not present in worker ants or in young, alate (virgin) queens. The material has been identified as (E,E,E)-1-isopropenyl-4,8,12-trimethylcyclotetradeca-3,7,11-triene (neocembrene). This chemical is produced in the Dufour's gland of fer...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF00987358
更新日期：1984-12-01 00:00:00
abstract：:The salticid spider Cosmophasis bitaeniata preys on the larvae of the green tree ant Oecophylla smaragdina. Gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) reveal that the cuticle of C. bitaeniata mimics the mono- and dimethylalkanes of the cuticle of its prey. Recognition bioassays with extra...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1023/a:1015249012493
更新日期：2002-04-01 00:00:00
abstract：:Many species of insects are known to produce and secrete benzoquinone derivatives. These compounds are usually defined as "defense chemicals." However, in many cases, it has not been determined what the chemicals are meant to defend against. Tribolium beetles produce up to three benzoquinones, but their specific funct...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/s10886-007-9293-2
更新日期：2007-06-01 00:00:00
abstract：:Diastereomers of the spiroacetal, 2,8-dimethyl-1,7-dioxaspiro [5.5]undecane, represent main components of the cephalic secretion from males of the solitary bee,Andrena wilkella. The major compound proved to be of high enantiomeric purity, showing (2S,6R,8S) configuration. Only the naturally occurring enantiomer attrac...
journal_title：Journal of chemical ecology
pub_type： 杂志文章
doi：10.1007/BF01021775
更新日期：1990-02-01 00:00:00
