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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Korean Journal of Mycology
Journal Basic Information
Journal DOI :
The Korean Society of Mycology
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Volume & Issues
Volume 40, Issue 4 - Dec 2012
Volume 40, Issue 3 - Sep 2012
Volume 40, Issue 2 - Jun 2012
Volume 40, Issue 1 - Apr 2012
Selecting the target year
Notes on Some Unrecorded Species in Korean Hypholoma
Seok, Soon Ja ; Kwon, Soon Woo ; Park, In Cheol ; Kim, Yang Sup ; Yoo, Kwan Hee ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 179~182
DOI : 10.4489/KJM.2012.40.4.179
Different mushroom species have collected from various areas and their taxonomic identification was carried out for species diversity. Among them, Hypholoma elongatum (Pers.) Ricken that was collected from Yongmoon mountain of Gyonggi in Korea was confirmed as new collection in Korea and registered here with descriptions and Korean common name. All collections cited here are deposited in the Herbarium Conservation Center of National Academy of Agricultural Sciences.
Molecular Identification of Endophytic Fungi Isolated from Needle Leaves of Pinus thunbergii
Kim, Chang-Kyun ; Eo, Ju-Kyeong ; Eom, Ahn-Heum ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 183~186
DOI : 10.4489/KJM.2012.40.4.183
Endophytic fungi were isolated from needle leaves of Pinus thunbergii distributed in Boryeong of Korea. Total 7 species of fungi were identified using partial sequences of ITS and LSU regions of nuclear DNA Anthostomella sepelibilis, Beltrania sp., Cladosporium sp., Coniochaeta velutina, Entonaema pallida, Lophodermium sp. and Nigrospora sphaerica sphaerica. The endophytic fungi, Beltrania sp. was the most dominant species isolated from P. thunbergii in this study. Results indicate that the distribution of endophytic fungi in the leaves of P. thunbergii could be influenced by environments of the fungal habitat.
Manufacture of Koji Using fungi Isolation from Nuruk and Identification of Koji Molds
Kim, Jae-Ho ; Kwon, Young-Hee ; Lee, Ae-Ran ; Kim, Hye-Ryun ; Ahn, Byung-Hak ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 187~190
DOI : 10.4489/KJM.2012.40.4.187
Various koji were prepared by fungi isolated from traditional nuruk and their quality characteristics were investigated. Acidity and saccharification power of their koji were ranged in 5.0~6.8 and 128sp~241sp. Nine fungi which were showed good quality and sensory evaluation were identified by analysis of their nucleotide sequences with PCR-amplified 18S rDNA internal transcribed spacer-1(ITS-1) and ITS-4 genes. Among them, six strains were identified as Aspergillus oryzae and the other strains were identified as Mycocladus corymbiferus, Rhizo-pus oryzae, Lichtheimia corymbifera.
Effects of Medium, Temperature and pH on Mycelial Growth and Cellulase Activity of Ectomycorrhizal Fungi from Korean Forests
Jeon, Sung-Min ; Kim, Min-Soo ; Ka, Kang-Hyeon ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 191~203
DOI : 10.4489/KJM.2012.40.4.191
Mycelial growth of ectomycorrhizal fungi (27 strains of 8 species) collected from Korean forests was observed on various culture conditions (media, temperature, pHs). After 60 days of incubation, all strains grown on potato dextrose agar (PDA) and modified Melin-Norkran's agar (MMNA), whereas no mycelial growth was observed on malt extract agar (MEA) or sabouraud dextrose agar (SDA) in some strains including Tricholoma matsutake. Mycelial growth on PDA was poor at high temperature (
) than the low temperature (
). The optimal temperature on PDA and pH in potato dextrose broth (PDB) for mycelial growth in most strains were
and pH 4-5, respectively. All strains tested showed the carboxymethyl cellulase (CM-cellulase) activity and the maximal cellullase activity was expressed by the mycelium of T. matsutake (KFRI 1266) on the CMC agar plate with pH 5.0.
Optimization of Culture Conditions for the Yeast and Analysis of Qualities of Makgeolli Brewed with the Yeast Isolated from Korean Traditional Nuruk
Kang, Hyang-Rin ; Lee, Ae-Ran ; Kwon, Young-Hee ; Kim, Jae-Ho ; Kim, Hye-Ryun ; Ahn, Byung-Hak ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 204~209
DOI : 10.4489/KJM.2012.40.4.204
In this study, a novel yeast, Y111-5 for Makgeolli manufacture was selected from Nuruk yeasts, and its optimal culture condition were investigated. The Y111-5 strain was identified as Saccharomyces cerevisiae by phylogenetic analysis of 18S RNA sequence. The maximal growth was obtained when the yeast was cultivated at
for 15 h in the medium containing sucrose 9% and yeast extract 5%.
Changes of Physicochemical Properties and Microbial during Storage of Commercial Makgeolli
Kwon, Young-Hee ; Lee, Ae-Ran ; Kim, Jae-Ho ; Kim, Hye-Ryun ; Ahn, Byung-Hak ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 210~214
DOI : 10.4489/KJM.2012.40.4.210
The aim of this study was to determine changes of physicochemical properties and microorganisms of commercial Makgeolli during storage at
During storage at
for 11 days, ethanol contents did not increased up to 7.0%, and pH and total acidity were ranged with 3.12-3.99 and 0.22-0.28%, respectively. Makgeolli which was storaged at
for 11 days showed more than 7.0% of alcohol contents, pH of 3.96-4.17 and total acidity of 0.27-0.30%. Yeast cell counts showed maximal
for 3 days and
for 1 day. Lactic acid bacteria and total bacteria cell counts of Makgeolli which was storaged at
for 11 days were higher than those
storage. In preference test, Makgeolli from storage at
for 11 days was showed the level of 4.9-5.2 points however, Makgeolli from storage at
for one day showed below 5.0 point.
Effect of Postharvest High CO
Treatment and Anti-moisture Pad on the Quality of Fresh Oyster Mushroom during Export Simulation
Hwang, Yong-Soo ; Lee, Kyeung-Min ; Kim, Min-Kyung ; Seo, Geon-Sik ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 215~223
DOI : 10.4489/KJM.2012.40.4.215
This study was aimed to find factors responsible for export potential of oyster mushroom through postharvest treatments including high pressure
and anti-moisture pad. Temperature fluctuation during export simulation induced the condensation of excess moisture resulting in the quality loss due to browning and decay. Anti-moisture pad was effective on inhibition of browning occurrence in part. High temperature exposure (
) as retail simulation greatly offset the positive effect of anti-moisture pad. Short term treatment of high pressure
delayed the surface color changes as hunter L, a, and b values. There was no consistent tendency in total sugar and phenolics between treatments. In general, the export potential of small size mush-room (export size) at harvest was higher than large ones (domestic size). The major factors asso-ciated with the quality decrease of oyster mushroom during export were moisture condensation in packages and temperature fluctuation. Further research is required to improve mushroom export procedures.
Analysis of Protein Domain for Interaction between α-COP and ε-COP in Aspergillus nidulans
Song, Eun-Jung ; Kim, Ki-Hyun ; Lee, Hwan-Hee ; Park, Jeong-Seok ; Kang, Eun-Hye ; Park, Hee-Moon ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 224~228
DOI : 10.4489/KJM.2012.40.4.224
In order to screen interactor(s) of the Aspergillus nidulans
-COP of COPI vesicle, we performed the yeast two hybrid screening by using the gene for A. nidulans
-COP as a bait and identified
-COP of the COPI vesicle as an interacting protein. The A. nidualns gene for the
-COP was designated
psi-lone-COP), which encoded 296 amino acid residues with high level of identity with orthologs from other fungi. Domain analyses with yeast two-hybrid system suggested that the interaction between
-COP relied on the C-terminus of both proteins, and that the N-terminal WD domian of
-COP and the TPR region of
-COP were not essential but required for the enhancement of the interaction. These results indicate that the interaction mode between
-COP of COPI vesicle is evolutionarily well conserved in eukaryotes.
Characterization and β-secretase Inhibitory Activity of Water-soluble Polysaccharides Isolated from Phellinus linteus Fruiting Body
Jo, Hang Soo ; Choi, Doo Jin ; Chung, Mi Ja ; Park, Jae Kweon ; Park, Yong Il ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 229~234
DOI : 10.4489/KJM.2012.40.4.229
A key molecule in the pathogenesis of Alzheimer's disease (AD) is the
-amyloid peptide (
) generated by
-secretase activity, an aspartic protease. This study was designed to evaluate inhibitory effect of the high-molecular weight water-soluble polysaccharides (Et-P) isolated and purified from Phellinus linteus fruiting body on
-secretase activity. The Et-P was purified from the hot water extract of Phellinus linteus fruiting body mainly by 75% ethanol precipitation and DEAE-Cellulose column chromatography. From the DEAE-Cellulose chromato-gram and molecular weight analysis, the Et-P was shown to be a mixture of three polysaccharides with molecular mass of 1,629, 1,294, and 21 kDa, respectively. The monosaccharide composition of Et-P was determined to be glu-cose, galactose, and mannose as major sugars, glucose being the most prominent one (48% in mole percentage). The elemental analysis and FT-IR analysis suggested that Et-P is typical polysaccharides having at least partially
-linkages and possible existing as complex with phenolic compounds. The laminarinase digestion and HPAEC-PAD analysis suggested that Et-P is a variant of beta-(1,3)-glucans. The Et-P showed DPPH radical scavenging activity and, especially, a significant inhibitory activity on
-secreatase activity (48% inhibitin at 100
), suggesting that they may inhibit the formation of
which is the major causative of Alzheimer's disease. The results of this study suggest that the water soluble polysaccharides of Phellinus linteus fruiting body can be a potent material for the development of preventive or therapeutic agents for AD.
Effect of the Extracts from Fermented-Rhus verniciflua Stem Bark with Fomitella fraxinea on the Growth and Enzyme Activity of Soybean Product-fermenting Microorganisms
Choi, Han-Seok ; Yeo, Soo-Hwan ; Jeong, Seok-Tae ; Choi, Ji-Ho ; Kang, Ji-Eun ; Kim, Myung-Kon ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 235~243
DOI : 10.4489/KJM.2012.40.4.235
We studied the effect of fermented Rhus verniciflua stem bark (FRVSB) extract (used in herbal med-icine by Koreans) on the microbial growth and enzyme activity of 12 soybean-fermenting microorganisms, including Bacillus spp., lactic acid bacteria, yeast, and other harmful bacteria. The ethanol and methanol extracts of FRVSB inhibited the growth of Bacillus subtilis, Bacillus licheniformis, Bacillus cereus, and Zygosaccharomyces rouxii, and in the disk diffusion assay, their inhibition zone diameters were 11.06-12.23, 12.32-18.38, 11.47-11.84, and 13.59-14.21 mm, respectively. The water extract did not show any inhibitory effect. In fact, the water extract addition enhanced the growth of B. subtilis and B. licheniformis by 1.3-4.5 fold and that of B. cereus by 1.2-1.4 fold. However, the water extract did not affect the growth of Lactobacillus plantarum, Lactobacillus mesenteroides, Saccharomyces cer-evisiae, and Escherichia coli. The addition of water extract increased the amylase and protease activity of B. subtilis and B. licheniformis.
Effect of Urushiol-Free Extracts from Fermented-Rhus verniciflua Stem Bark with Fomitella fraxinea on the Fermentation Characteristics of Doenjang (Soybean Paste)
Choi, Han-Seok ; Jeong, Seok-Tae ; Choi, Ji-Ho ; Kang, Ji-Eun ; Kim, Eugene ; Noh, Jong-Min ; Kim, Myung-Kon ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 244~253
DOI : 10.4489/KJM.2012.40.4.244
The effect of fermented Rhus verniciflua stem bark (FRVSB) extract on the microbial count, enzyme activity, concentrations of free amino acids and organic acids, and physiochemical properties of doenjang (soybean paste) was evaluated during brine fermentation. The FRVSB extract increased the total free amino acid concentration by 1.3-3.1-fold on the
day of brine fermentation. After the filtration of brine, the following microbial counts were obtained in the doenjang: bacteria,
cfu/g; Escherichia coli, not detected; and Bacillus cereus,
cfu/g. The FRVSB extract addition enhanced the protein and starch degrading activity by 13.8-26.0% and 16.1-35.1%, respectively. The extract increased the total free amino acid content by 1.4-3.0-fold. Lactic acid, acetic acid, and pyroglutamic acid were the predominant organic acids in doenjang. Moreover, the proximate composition, pH, moisture, ash, salt, and amino nitrogen content were increased.
Decrease efficiency of Offensive Odor from Pig Excreta by Yeast Strain, Pichia farinosa NASS-2 Isolated from Soy Bean Paste
Yoo, Jae Hong ; Park, In Cheol ; Kim, Wan Gyu ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 254~257
DOI : 10.4489/KJM.2012.40.4.254
The different microbial species were isolated from soy bean paste samples. A yeast strain NASS-2 was effective to decrease odor activity on pig excreata was identified as Pichia farinosa based on nucleotide sequences of 18S ribosomal DNA and Internal transcribed space (ITS). The extracellular fraction of P. farinosa NASS-2 was effective to decrease odor activity of pig excrements. Optimal medium component for decreasing order activity on odor material composed of soluble starch 2.0% (w/v) and yeast extract 0.8% (v/v). The decrease of odor material was maximum at
for 72 hours with pH 5.5. When the P. farinosa NASS-2 culture broth was treated to pig excrements, the removal efficiency was an average concentration with 1.38 ppm of ammonia gas.
Antifungal Activity of Paenibacillus sp. IUB225-08 Against Colletotrichum gloeosporioides
Kim, Hye Young ; Lee, Tea Soo ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 258~265
DOI : 10.4489/KJM.2012.40.4.258
Bacterial strains isolated from diseased red pepper fruits showed inhibitory effect on mycelial growth and spore germination of Colletotrichum gloeosporioides. The bacterium was identified as Paenibacillus sp. based on its physiological, biochemical characteristics and MicroLog analysis and named Paenibacillus sp. IUB225-08. The bacterium showed the highest level of antifungal activity C. gloeosporioides when cultured at
for 60 hrs in LB broth with initial pH of 7.0. The butanol fraction from culture extract of Paenibacillus sp. IUB225-08 effectively inhibited the mycelial growth and spore germination of C. gloeosporioides than any other agricultural chemicals tested. Pepper fruits and seeds treated with spores of C. gloeosporioides showed symptoms, while those treated with the culture extract and C. gloeosporioides together did not show any symptoms. Therefore, the culture extract of Paenibacillus sp. IUB225-08 have a potential for biocontrol agent of red pepper anthracnose.
Occurrence of Stem Canker and Tuber Rot on Yam Caused by Rhizoctonia solani AG 2-2IIIB in Korea
Hong, Sung Kee ; Lee, Jae Kook ; Lee, Young Kee ; Lee, Sang Yeob ; Kim, Wan Gyu ; Shim, Hong Sik ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 266~270
DOI : 10.4489/KJM.2012.40.4.266
Stem canker and tuber rot symptoms were observed on yam grown in Andong and Jinju, Korea in 2011. A total of 20 isolates of Rhizoctonia and allied fungi were obtained from the symptomatic plants. Among the isolates, 8 isolates were identified as Rhizoctonia solani and 12 isolates as Ceratobasidium sp. based on rDNA-internal transcribed spacer (ITS) sequence similarity. In the cluster analysis of rDNA-ITS sequences, 7 isolates of R. solani belonged to AG 2-2IIIB and remaining one to AG 1-1A. In addition, among the 12 isolates of Ceratobasidium sp., 7 isolates belonged to AG-Fa, three isolates to AG-A and the other two isolates to AG-Fb and AG-O, respectively. Pathogenicity tests showed that all the R. solani AG 2-2IIIB isolates are pathogenic on stem and tuber of yam but R. solani AG 1-1A and all the Ceratobasidium isolates are non-pathogenic. The results indicate that R. solani AG 2-2IIIB is an important pathogen causing stem canker and tuber rot on yams grown in the study areas. This is the first report of R. solani AG 2-2IIIB causing stem canker and tuber rot of yam in Korea.
Biological control of Paraconiothyrium minitans CM2 on Lettuce Sclerotinia Rot Caused by Sclerotinia sclerotiorum
Lee, Sang Yeob ; Hong, Sung Kee ; Kim, Jeong Jun ; Han, Ji Hee ; Kim, Wan Gyu ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 271~276
DOI : 10.4489/KJM.2012.40.4.271
A mycoparasite, Paraconiothyrium minitans CM2 was selected for biological control of sclerotinia rot of lettuce caused by Sclerotinia sclerotiorum. The experiment was carried out in a lettuce greenhouse in Yangpyeong from March to April.. When lettuce sclerotinia rot showed in the early stage of occurrence, Conidial suspension of the mycoparasite was weekly treated once to three times onto soil surface around lettuce plants. Incidence of sclerotinia rot in the once-application plot of the mycoparasite (
) and in the benomyl(WP)-treated plot was 11.0% and 2.7%, respectively, whereas that of control was 31.0%. Incidence of twice- and three-application plots of the isolate was 7.9% and 12.8%, respectively. For increasing the effect of the mycoparasite, the experiment for the timing of application of P. minitans CM2 was carried out in a lettuce greenhouse in Yangpyeong and Suwon. Control efficacy against lettuce sclerotinia rot in the soil-drenching plots of P. minitans CM2 (
) in the planting was 75.3~84.7%, and control effect by treatment of the isolate at the pot drenching+the soil-drenching plots in the early stage of disease occurrence was 63.8~58.0%. As the results, P. minitans CM2 could be a prospective biofungicide for biological control of sclerotinia rot of lettuce.
Biocontrol of Anthracnose of Chili Pepper by Bacillus sp. NAAS-1
Yoo, Jae Hong ; Park, In Cheol ; Kim, Wan Gyu ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 277~281
DOI : 10.4489/KJM.2012.40.4.277
Bacillus sp. NAAS-1 isolated from the field of Chili pepper was tested for biocontrol activity against anthracnose pathogen of Chili pepper caused by Colletotrichum acutatum. The antifungal activity of Bacillus sp. NAAS-1 culture broth was compared with synthetic fungicide containing carbendazim (40%) and kasugamycin (3.45%). Bacillus sp. NAAS-1 showed a similar fungicidal activity against the anthracnose pathogen at the concentration of 50
in comparison to the fungicide containing carbendazim (40%) and kasugamycin (3.45%) using a cup method. Bacillus sp. NAAS-1 also exhibited its potent fungicidal activity against the anthracnose in vivo test at the concentration of 50
when compared to the fungicide containing carbendazim (40%) and kasugamycin (3.45%).
Biological Control of Paraconiothyrium minitans S134 on Garlic White Rot Caused by Sclerotium cepivorum
Lee, Sang Yeob ; Hong, Sung Kee ; Choi, In Hu ; Chon, Yong Dal ; Kim, Jeong Jun ; Han, Ji Hee ; Kim, Wan Gyu ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 282~287
DOI : 10.4489/KJM.2012.40.4.282
Sclerotium cepivorum is a causal agent of white rot disease on different plants including Allium species such as garlic. A mycoparasite, Paraconiothyrium minitans S134 was selected for biological control of sclerotinia rot of garlic caused by S. cepivorum. The experiment was carried out in a garlic field in Taean from October in 2011 to June in 2012. Spore suspension of the mycoparasite was treated twice onto soil surface around garlic plants in sowing in 2011 and late Feb. in 2012, and disease rating was made June in 2012. Incidence of white rot in the twice-application plot of the mycoparasite (
spores/mL) and in the fluquinconazole (WP)-treated plot was 6.8% and 0.4%, respectively, whereas that of control was 19.5%. As the results, P. minitans S134 could be a prospective biofungicide for biological control of white rot of garlic.
Investigation of Fungi in Pesticide Fumigated Oak Wilt-Diseased Logs
Suh, Dong Yeon ; Son, Seong-Yeol ; Kim, Seong Hwan ; Seo, Sang Tae ; Kim, Kyung Hee ; Ko, Han Kyu ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 288~291
DOI : 10.4489/KJM.2012.40.4.288
Korean oak wilt disease caused by Raffaelea quercus-mongolicae is vectored by the ambrosia beetle Platypus koryoensis. To prevent the spread of the disease, the beetle infested oak tree had been cut into logs, covered with plastic vinyl, fumigated with a pesticide, and stored for three years on the site where the tree was cut. This study was carried out to get information on the fungi colonizing the fumigated oak wood. Wood disk samples collected from the fumigated oak logs at two locations in the Taejo Mountain, Cheonan city, were used for fungal isolation. A total of 99 filamentous fungal isolates were obtained from the wood disk samples. Hypocrea spp., Trichoderma spp. and Penicillium spp. were identified based on morphological characteristics and nucleotide sequence analysis of translation elongation factor 1-alpha gene and ITS rDNA region. Trichoderma was the major fungal group. R. quercus-mongolicae, and P. koryoensis were not detected from the fumigated oak wood. Our work provided evidence that after three years of storage, the fumigated oak wilt-diseased logs should be no longer harmful source of oak wilt disease transmission.
Acceleration of the Mycelial Growth of Trametes veriscolor by Spent Coffee Ground
Lee, Min-Ku ; Shin, Dong-Il ; Park, Hee-Sung ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 292~295
DOI : 10.4489/KJM.2012.40.4.292
Trametes versicolor, a common inhabitant of dead hardwoods in temperate climates, belongs to one of the important medicinal mushrooms. In this study, spent coffee ground(SCG), instant coffee powder(ICP) and instant decaffeinated coffee powder(IDCP) were examined for their effect on the mycelial growth of T. versicolor. Adding SCG was proven to be significantly beneficial at the concentration as high as 10%. ICP and IDCP, both containing concentrated polyphenols, were also beneficial at low concentration less than 1%. 1% SCG culture resulted in ten-fold increased yield of dry cell mass compared to the control culture. Adding coffee substances was recommended as a useful tool for accelerating the growth and strengthening the physiological activity of the mycelium.
Detection of Biological Activities of Wild Mushroom Methanol Extracts
Kim, Jun-Ho ; Yoo, Kwan-Hee ; Kim, Yang-Sup ; Seok, Soon-Ja ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 296~298
DOI : 10.4489/KJM.2012.40.4.296
In this study, the biological activities of 33 kinds of wild mushroom methanol extracts were investigated. Boletellus elatus showed the greatest fibrinolytic activity (1.08 plasmin units/mL) in a fibrin plate assay, and the activity of Heterobasidion insulasis was 0.89 plasmin units. The thrombin inhibitory activities of Boletellus elatus and Heterobasidion insulasis were 93.32% and 93.69%, respectively. In a
-glucosidase inhibitory activity test, Laccaria amethystina showed the greatest inhibitory activity at 81.25%. The antioxidative activities of Gomphus sp. and Geastrum lageniforme were 91.37% and 90.42%, respectively. Since Boletellus elatus and Heterobasidion insulasis have strong fibrinolytic and thrombin inhibitory and antioxidative activities, the two mushrooms can be used as material for the development of biofunctional foods for cardiovascular diseases.
Induction of Salicylic Acid Production in Pepper by Yeast Cell Wall Extract
Kang, Dae Sun ; Cho, Soo Muk ; Kang, Hee-Wan ;
The Korean Journal of Mycology, volume 40, issue 4, 2012, Pages 299~302
DOI : 10.4489/KJM.2012.40.4.299
Yeast cell wall extract (YCWE) was treated on leaves and roots of pepper seedlings at the dosage of 4 mg/mL and salicylic acid (SA) production in pepper was detected by ultra high performance liquid chromatography (UHPLC). The SA production in pepper stem was induced by YCWE. SA was produced at the highest level of 20.29
after 48 hrs of foliar spray with YCWE, which is 3.7 times higher than that of root perfusion with YCWM. SA production was gradually reduced after 72 hrs of YCWE treatment.