• Title, Summary, Keyword: Pheromone

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미생물의 성 pheromone

  • 정영기
    • Journal of Life Science
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    • v.2 no.1
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    • pp.11-19
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    • 1992
  • pheromone은 생물의 체내에서 합성되고 체외로 분비되어 동종개체에 작용함으로써 특정의 생리적 변화를 유발하는 물질이다. 생물 중에서는 성장의 어느 단계에서 pheromone과 같은 물질이 관여하고 있다는 것이 알려져 있다. 또한, 단세포생물에서 세포 외로 분비하여 2개의 세포를 서로 접합시키는 물질이 있는데 이러한 물질을 성pheromone이라 부르고 있다. 특히, 효모 버섯, 조류, 섬모충류에서 연구되고 있다. 효모는 성접합형을 달리하는 두 균주가 상호pheromone을 분비, 수용하여 성분화를 행하여가고 있다. 그리고 세균에 있어서도 pheromone 양상의 물질이 세포 외로 분비되고 이 물질에 의하여 세균의 생리적 조건에 영향을 주는 예가 있다. 지금까지 알려져 있는 미생물의 성 pheromone에 대하여 크게 나누어 보면 지용성 성 pheromone과 수용성 성 pheromone으로 대별할 수 있다. 본 총설에서는 세균과 자낭균효모, 담자균효모유래의 성 pheromone 중 peptide(수용성) 성 pheromone에 대해서만 집약하였다.

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A pheromone mutant of Schizosaccharomyces pombe displays nucleolar fragmentation

  • Jun, Jai-Hyun;Kim, Dae-Myung
    • BMB Reports
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    • v.41 no.3
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    • pp.248-253
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    • 2008
  • Stresses and nutritional starvation are two main external signals for the induction of sex pheromones in the fission yeast Schizosaccharomyces pombe. In an attempt to identify the components involved in transduction of starvation signals, we screened 135 temperature-sensitive (ts) mutants and isolated 6 mutants that induced the pheromone even in the presence of a nitrogen source. These mutants exhibited two distict induction phenotypes: pheromone induction at restrictive but not at permissive temperatures; and pheromone induction at both permissive and restrictive temperatures. The times required for the maximum pheromone induction at the restrictive temperature differed slightly in each mutant. In addition to the pheromone induction phenotype, the ts243 and ts304 mutants exhibited cell-division-cycle defects. The ts304 mutant cells showed an abnormal cytoplasmic DAPI staining pattern. The nucleolus of this mutant seemed to be fragmented, a phenomenon which is typically observed in aged yeast cells. The result of our genetic analysis indicated that the pheromone induction mutants belonged to 6 separate complementation groups. We designated these mutants pws1 to pws6.

The Olfactory Organ is Activated by a Repelling Pheromone in the Red-spotted Newt Notophthalmus viridescens

  • Park, Daesik;Propper, Catherine R.
    • Animal cells and systems
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    • v.6 no.3
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    • pp.233-237
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    • 2002
  • The pheromonal repelling response occurs when a combination of female and male pheromones is found to be less attractive to courting males than are female pheromones alone. This repelling response may act to conserve a courting males’reproductive fitness by minimizing ma1e-male competition within a courting group. Recently, a Pheromonal repelling response was first reported for vertebrates in the red-spotted newt, Notophthalmus viride-scens. A male cloacal pheromone, a ∼33 kDa protein, was identified as a repelling pheromone. In this study, to determine whether both the main olfactory epithelium (MOE) and/or the vomeronasal organ (VNO) are activated by the repelling pheromone, we recorded electrical field potentials from both olfactory epithelia while applying the repelling pheromone. The repelling pheromone induced electrical responses from both olfactory organs, and the magnitude of the response was greater in the VNO than in the MOE. Our results suggest that both the VNO and MOE may be involved in the pheromonal repelling response.

Olfactory Responses of Male and Female Red-spelled Newts to Sex Pheromones from the Opposite Sex

  • Park, DaeSik;Park, Shi-Ryong
    • Animal cells and systems
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    • v.6 no.4
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    • pp.287-292
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    • 2002
  • Functional characterization of sex pheromones in olfactory responses is essential for the study of chemical communications in amphibians. Using Y-maze olfactory preference tests, we have investigated the olfactory res-ponses of male and female red-spotted newts, Notophthalmus viridescens, to the crude extracts of the opposite sex's genial and cloacal pheromones. Both male and female cloacal pheromone extracts caused the opposite sex to initiate olfactory responses by leaving the starting area in the Y-maze, but only subject males exposed to female cloacal pheromone extracts completed olfactory choice by entering the side arm of the Y-maze which received the pheromones. For genial pheromone extracts, only female genial pheromone extracts induced initial olfactory responses from test males. Neither male nor female genial pheromone extracts made the oppo-site sex complete olfactory choice. Pre-exposure of test females to male pheromone extracts increased the likelihood of initial olfactory responses. The latency for initial olfactory responses of test females that were previously exposed to male genial extracts was significantly shorter than that of control females.

Studios on the Synthetic Pheromones of Striped Rice Borer and Tortricid Insect Pests (이화명충과 과수잎말이나방류 해충의 합성 Pheromone에 관한 연구)

  • Song Y. H.;Song H. Y.;Kim H. K.;Chang Y. D.;Lippold P. C.
    • Korean journal of applied entomology
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    • v.17 no.1
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    • pp.41-47
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    • 1978
  • Pheromones of several insect species were evaluated in a screening program in terms of their usefulness in pest forecasting and control in Korea. Species included striped rite borer (Chilo suppressalis) and tortricid moths, which attack deciduous fruit, and colding moth. The pheromone of striped rice borer was supplied through the courtesy of the Tropical Products Institute, London. Pheromones of other species were obtained from Cornell University and the Zoecon Corporation of Palo Alto, California. 'rho results of this experiment were as follows: 1. Live traps containing virgin striped rice borer female moths were more effective in attracting male moths than were the pheromone traps. 2. Since the effectiveness of the striped rice borer pheromone decreased dramatically with time, it was difficult to estimate the peak tine of the borer emergence. 3. The primary species trapped in deciduous fruit orchards was the oriental fruit moth, Grapholitha molesta. The traps were baited with the phermones, OFM and LAW. 4. Several moth species were trapped with OBLR. RBLR. SPAR and ArcM phermones but few were trapped with the remaining eight tortricid pheromones. 5. The following tortricid pheromones might be useful for forecasting the species given: OFM, LAW : Grapholitha molesta OBLR : Archips breviprecanus OBLH, RBLR, ArcM : Archippus coreensis Archips fuscocupreanus Hoshinoa longicellana SPAR, TBM ; Phyroderces sp.

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Studies on the developement of Stigmatella aurantiaca(I) -Effects of cations, pheromone, and GMP on the fruiting body formation- (Stigmatella aurantiaca의 발생에 대한 연구(I) -fruiting body 형성에 미치는 몇가지 양이온과 pheromone 및 GMP의 영향-)

  • Kim, Soo-Ok;Kim, Young-Min
    • Korean Journal of Microbiology
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    • v.22 no.1
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    • pp.57-66
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    • 1984
  • Cells of Stigmatella aurantiace developed in the light on the medium containing calcium, barium, or lithium ion formed fruiting bodies without stalk. Fruiting body with stalk was formed on the medium containing calcium ion and GMP (GMP-medium) even under the dark condition. On the medium containing calcium and pheromone (pheromone-medium), most cells were developed only into the stalk in the light and into the sporangium in the dark. The number of aggregate formed on the medium containing calcium ion (Ca-medium) was more than that formed on the medium containing calcium, potassium, and sodium ions (CPS-medium). The number of aggregate formed on the GMP or pheromone-medium was less than that formed on the Ca-medium. Both pheromone and GMP reduced the time required for aggregate formation when cells were developed in the dark. Light stimulated cells to form more aggregates in short time when it was introduced into the Ca-, CPS-, GMP-, or pheromone-medium.

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Control of Beet Armyworm, Spodoptera exigua Hubner (Lepidoptera : Noctuidae), using Synthetic Sex Pheromone I. Control by Mass Trapping in Allium fistulosum Field (합성 성훼로몬에 의한 파밤나방(Spodoptera exigua)의 방제 I. 외대파에서의 대량유살에 의한 방제)

  • 박종대;고현관
    • Korean journal of applied entomology
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    • v.31 no.1
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    • pp.45-49
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    • 1992
  • Studies were conducted to control Spodoptera exigua in Allium fistulosum field using synthetic sex pheromone trap. Heavily, medium and lightly damagd fields at early transplanting time showed no differences in control effects after 8 weeks of establishment of pheromone traps in Allium fistulosum fields. Number of damaged leaves in each treated field was 0.2-3 individuals per 60 hills comparing with 33.2 individuals at non-treated field. Also, the numbers uf male adults attracted to pheromone traps were 1.8-5.0 individuals at the big inning of installation but increased to 25.8, 49.9, 74.9, and 77.4 individuals after 2, 4, 6, and 8 weeks, respectively. There was a negative correlation between amount of male adults attracted to pheromone traps and number of damaged leaves (r=-0.9572*). Number of adults attracted to various colored light trap for 30 days were 6 in red, 11 in white and none in blue comparing with 1,041 individuals in pheromone trap.

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Field Study on Mating Confusion of Synthetic Sex Pheromone in the Striped Rice Borer, Chilo suppressalis (Lepidoptera: Pyralidae) (성 pheromone에 의한 이화명나방의 교미교란에 관한 연구)

  • Lee J.O.;Park J.S.;Goh H.G.;Kim J.H.;Jun J.G.
    • Korean journal of applied entomology
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    • v.20 no.1
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    • pp.25-30
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    • 1981
  • Mating confusion of the Striped Rice Borer with its synthetic sex pheromone, a mixture of (Z)-11-hexadecenal and (Z)-13-octadecenal in a ratio of 4.5 : 1, was estimated during the first and second generation in rice field near Suweon. The mixture was highly disruptive to pheromonal communication between males and females. The orientation behavior of male moths toward the females was confused at a dosage of 29.3g per 30a during the first generation and even at 33rr.g per $20m^3$ during the second generation.

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Daily Rhythm of Pheromone Production and Release by Females of the Black Pine Base Scale, Matsucoccus thunbergianae (Homoptera: Coccoidea: Margarodidae) (일주기와 관련된 솔껍질깍지벌레 암컷성충의 성훼로몬 체내생산 및 발산)

  • ;Law
    • Korean journal of applied entomology
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    • v.30 no.1
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    • pp.94-99
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    • 1991
  • The daily rhythm of sex pheromone production and release by females of the black pine base scale, Matsucoccus thunbergianae Miller and Park, was demonstrated by studying the amounts of pheromone possessed and released by females, periodically after emergence. Cycles of both pheromone production and release had daily peaks between 8 a.m. and 2 p.m., and has marked decreases after 4 p.m. It appeared that the amounts of pheromone gradually decreased three days after the emergence. Significance in synchronization of the daily rhythm of female pheromone release and activities of males and females with reference to reproductive success in this species is discussed.

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Increased Attractiveness of the Aggregation Pheromone Trap of Bean Bug, Riptortus clavatus (먹이 첨가에 의한 톱다리개미허리노린재 집합페로몬 트랩의 유인력 증진)

  • Huh Wan;Park Chung-Gyoo
    • Korean journal of applied entomology
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    • v.45 no.1
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    • pp.87-90
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    • 2006
  • The effect of food source in aggregation pheromone trap of bean bug, Riptortus clavatus, was evaluated in terms of the trap attractiveness using water-ran and cylinder-type traps. Water-pan trap baited with pheromone + food (dried soybean + dried peanut + water) attracted significantly more number of females and males than those with pheromone or control trap. Although cylinder-type trap baited with pheromone + food did not show significantly higher attractiveness, it attracted more adults and nymphs than the pheromone and control traps. Further research on the effect of trap types on attractiveness is needed.