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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Korean Journal of Mycology
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Journal DOI :
The Korean Society of Mycology
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Volume & Issues
Volume 39, Issue 3 - Dec 2011
Volume 39, Issue 2 - Aug 2011
Volume 39, Issue 1 - Apr 2011
Selecting the target year
Some Unrecorded Genera and Species in Korean Agaricales (II)
Seok, Soon-Ja ; Jung, Yun-A ; Jin, Yong-Ju ; Park, In-Cheol ; Kwon, Soon-Woo ; Kim, Yang-Sup ; Yoo, Kwan-Hee ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 155~163
DOI : 10.4489/KJM.2010.39.3.155
The investigation on the species diversity for the Korean fungal flora was carried out by authors. Five species of the Agaricales recorded in the present paper are distributed Hygrocybe laeta (Pers.)P. Kummer var. laeta, Lyophyllum tylicolor (Fr.) M. Lange & Sivertsen, Clitopilus scyphoides (Fr.) Singer, var. scyphoides, Entoloma rusticoides (Gillet) Noordel. and Lactarius uyedae Singer were recorded for the first time and are described and illustrated in detail. Specimens cited here are deposited in the Herbarium Conservation Center of National Academy of Agricultural Sciences.
Analysis of Environmental Characteristics in Habitat of Amanita hemibapha
Sou, Hong-Duck ; Hur, Tae-Chul ; Jung, Sung-Cheol ; Joo, Sung-Hyun ; Park, Hyun ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 164~170
DOI : 10.4489/KJM.2010.39.3.164
Amanita hemibapha is a kind of mycorrhizal mushroom which has a relation with host plants and environmental factors. For the purpose of studying the relationship between environmental factors and mushrooms, in this study we conducted to investigate the soil physicochemical properties, the distribution of plants and the diversity of mushrooms in Gwangyang, Chungdo and Daegu. Soil texture in habitate of Amanita hemibapha was Sandy Loam and Sandy Clay Loam which contains a high rate of sand. Soil pH was approximately 5.0 in all study sites. Total nitrogen contents, C/N ratio and available phosphate(
) were the highest at the Chungdo. However, Gwangyang and Chungdo represent similar Cation Exchange Capacity(C.E.C) and Daegu has much less than other areas. Exchangeable cations,
content was higher at Gwangyang and Chungdo than Daegu and
content was the highest at Chungdo among three sites. Daegu has much
contents followed by Chungdo and Gwangyang. Interestingly,
content listed in reverse order of
at Gwangyang, Chungdo and Daegu. The main woody plants in study sites are confirmed as Carpinus laxiflora, Quercus mongolica, Q. serrata and Pinus densiflora. Quercus species are found as a common species in three study sites. Lastly, 8 family and 12 species of mushrooms are emerged in Gwangyang, also 8 family and 12 species and 5 family and 10 species are found in Chungdo and Daegu, respectively. Amanita pantherina, Boletus edulis, Tylopilus felleus and Marasmius maximus, which found in study sites, are also kind of mycorrhizal mushroom same as A. hemibaph. By using correspondence analysis, Q. mongolica, Q. serrata, Q. variabilis and C. laxiflora are expected to as a host plant of A. hemibapha.
Effect on Mycelial Growth and Fruit Body Development According to Supplementary Nutrition in Bag Cultivation of Neolentinus lepideus
Jang, Myoung-Jun ; Lee, Yun-Hae ; Ju, Young-Cheol ; Kim, Seong-Min ; Koo, Han-Mo ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 171~174
DOI : 10.4489/KJM.2010.39.3.171
This study was carried out to elucidate suitable supplementary nutrition for Neolentinus lepideus cultivation. The main substrate for cultivation was douglas fir sawdust, and supplementary materials for experiment were corn meal, corn hull, corncob, beet pulp, and potato starch. The higher amount of total nitrogen source was showed in corn meal (0.45%) than any other nutritive materials. Incubation ratio and cultivation period showed the best 97% and the shortest 43 days on medium with corn meal substrate. The fruit body yield and biological efficiency on medium with 10% corn meal were highest 122 g/1 kg and 35%, respectively. Factor analyses concerning fruiting yield showed total nitrogen source (r = 0.95) and crude fat (r = 0.65). These results are recommended that N. lepideus cultivation is corn meal material as the source of the supplementary nutrition and total nitrogen source as the factor of fruiting body yield on the Douglas fir sawdust medium.
Effect of LED Light on Primordium Formation, Morphological Properties, Ergosterol Content and Antioxidant Activity of Fruit Body in Pleurotus eryngii
Jang, Myoung-Jun ; Lee, Yun-Hae ; Kim, Jeong-Han ; Ju, Young-Cheol ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 175~179
DOI : 10.4489/KJM.2010.39.3.175
Light wavelength is the major factor of fruit body development associated with mushroom cultivation, but its wavelength range in Pleurotus eryngii is poorly understood. Using four kinds of light emitting diode (LED) including blue (475 nm), green (525 nm), yellowed (590 nm) and red (660 nm), we investigated to elucidate suitable light wavelength during primordium formation and fruit body development of P. eryngii on bottle cultivation. Primordia formation did not occur in blue light and red light. The morphological properties of fruit body in fluorescent lamp and blue light irradiation were showed thicker and larger pileus than those in other LEDs. However, length of stipe in fluorescent lamp and blue light was shorter than that of other LEDs. The DPPH radical was high in blue light, green light, and yellow light except for red light, and the polyphenol was high in four kinds of LED sources. And ergosterol was the highest in the green light. Thus, the high-quality mushroom production of P. eryngii is possible to green light condition considering productivity and functional materials.
Genetic Diversity of Paecilomyces japonica and Cordypces militaris Strains by URP-PCR Fingerprinting
Kim, Jong-Kun ; Kang, Hee-Wan ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 180~184
DOI : 10.4489/KJM.2010.39.3.180
This study was carried out to identify the genetic characteristics among isolates of Paecilomyces spp.and Cordyceps spp. by URP-PCR analysis. Twenty URP (universal rice primer) primers of 20 mer which were designed from repetitive sequence of rice, were used for producing PCR DNA fingerprints of the mushrooms. Of them, 5 URP primers, URP2F, URP2R, URP9F, URP4R, and URP17R amplified genomic DNA of the mushrooms with polymorphic PCR patterns. On isolates of Cordyceps militaris, primers URP1F, URP2R, URP6R and URP17R produced PCR polymorphic bands of 4 types. Isolates of Cordypces sp. that are isolated from different area of Korea were identical to isolate of C. militaris, while other species of Cordypces were different to the PCR profiles. However, the URP primers did not identify the polymorphism of PCR profile on isolates of P. japonica.
Screening and Physiological Functionality of Hypsizygus marmoreus (White Cultivar) Fruiting Body
Bolormaa, Zanabaatar ; Kim, Min-Kyung ; Seo, Geon-Sik ; Lee, Young-Wook ; Lee, Jong-Soo ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 185~188
DOI : 10.4489/KJM.2010.39.3.185
To develop health food and alternative medicine, water and ethanol extracts from Hypsizygus marmoreus (white cultivar) fruiting body were prepared, and its physiological functionalities were investigated. Antihypertensive angiotensin I-converting enzyme (ACE) inhibitor activity from water extract was showed higher of 60.5% than ethanol extract and SOD-like activity and xanthine oxidase inhibitory activity were also showed 24.1% and 23.0%, respectively. The other functionalities were very low or not detected. The maximal ACE inhibitory activity (80.5%) was obtained when the fruiting body of Hypsizygus marmoreus was extracted with distilled water (dilution 1 : 30) at
for 12 h.
Physiological Activities of Hot Water Extract and Solvent Fractions of Pleurotus ferulea
Kim, Jun-Ho ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 189~193
DOI : 10.4489/KJM.2010.39.3.189
To investigate the physiological activities of hot water extract and solvent fractions isolated from Pleurotus ferulea, antioxidative, fibrinolytic, thrombin inhibitory, and
-glucosidase inhibitory activities were examined. Pleurotus ferulea, hot water extract was fractionated into hexane, chloroform, ethyl acetate, butanol and water fraction. Each of these was assayed individually. The antioxidative activities of ethyl acetate and butanol fractions were 86.79% and 87.82%, respectively. Using the fibrin plate method, only the ethyl acetate fraction showed a plasmin activity of 0.08 units/ml. Thrombin inhibitory activities of chloroform and ethyl acetate fractions were 74.90% and 71.08%, respectively. In the
-glucosidase inhibitory activity test, butanol fraction showed the highest activity at 49.67%. From the above results, we anticipate that solvent fractions of Pleurotus ferulea can be used as a materials for the development of biofunctional foods for cardiovascular diseases.
Screening New Antihypertensive Angiotensin I-Converting Enzyme Inhibitor -Producing Yeast and Optimization of Production Condition
Kang, Min-Gu ; Kim, Ha-Kun ; Yi, Sung-Hun ; Lim, Sung-Il ; Lee, Jong-Soo ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 194~197
DOI : 10.4489/KJM.2010.39.3.194
Forty eight strains of yeast were cultured in potato dextorse(PD) broth at
for 24 hr and centrifuged with 12,000 rpm for 20 min. After concentrated the cultures, antihypertensive angiotensin I-converting enzyme(ACE) inhibitory activities of its concentrates were investigated. Among them, the concentrates from Saccharomyces cerevisiae Y183-3 showed the highest ACE inhibitory activity of 71.8%. The ACE inhibitor from Saccharomyces cerevisiae Y183-3 was maximally produced when Saccharomyces cerevisiae Y183-3 cultured in PD broth at
for 36 hr.
Characterization of Xylanase of Fungi Isolated from Janggyeong Panjeon in Haeinsa Temple
Hong, Jin-Young ; Kim, Young-Hee ; Jung, Mi-Hwa ; Jo, Chang-Wook ; Choi, Jung-Eun ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 198~204
DOI : 10.4489/KJM.2010.39.3.198
This study was carried out to investigate occurence of microbiales density and characteristics of xylanase produced by those in Janggyeong Panjeon. Cladosporium cladosporioides H1, Penicillium citreonigrum H3, Penicillilum toxicarium H4, Aspergillus versicolor H6, Acremonium alternarium H7 isolated from Janggyeong Panjeon produced xylanase, which had different production rates and specialized activities in an acidic condition. Cladosporium cladosporioides H1, Aspergillus versicolor H6, and Acremonium alternatum H7 produced xylanase at a faster rate than other fungi. A xylanase of Cladosporium cladosporioides H1 and Penicillilum toxicarium H4 showed a high thermostability in an acidic condition. As results, this study may lead to the development of a strategy for preservation of organic cultural heritages.
Immunological Relationships among Fungal and Plant Phenylalanine Ammonia-lyases and Bacterial Histidine Ammonia-lyase
Hyun, Min-Woo ; Yun, Yeo-Hong ; Suh, Dong-Yeon ; Han, Ji-Hae ; Kim, Seong-Hwan ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 205~212
DOI : 10.4489/KJM.2010.39.3.205
Phenylalanine ammonia-lyase (PAL) from the maize pathogen Ustilago maydis was analysed immunologically to obtain insights into the structural relationships between plant PAL and fungal PAL and between PAL and histidine ammonia-lyase (HAL). Cross-reactivity was found among all the PAL proteins from different species tested, using antibodies raised against both plant and fungal PALs. Both anti-Alfalfa and anti-popular PAL antibodies strongly recognized plant PALs but only weakly recognized fungal PALs. Antibodies raised against U. maydis PAL only weakly recognized the Rhodotorula glutinis yeast PAL. The anti-U. maydis PAL antibodies showed low affinity for the plant PALs but they bound strongly to Pseudomonas bacterial HAL. Significant cross-reactivity between the two plant PAL antibodies and the bacterial HAL was also observed. Both the anti-Ustilago PAL and the anti-poplar PAL antibodies displayed similar enzyme inhibition patterns, including moderate inhibition of bacterial HAL activity. However, the bacterial HAL antibody inhibited only Ustilago PAL. The PAL and HAL antibodies tested showed no inhibition against yeast PAL. This is first report on the immunological relationships between PAL and HAL.
Occurrence of Gray Mold on Blueberry Trees Caused by Botrytis cinerea in Korea
Hong, Sung-Kee ; Choi, Hyo-Won ; Lee, Young-Kee ; Lee, Sang-Yeob ; Kim, Wan-Gyu ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 213~216
DOI : 10.4489/KJM.2010.39.3.213
Gray mold symptoms were frequently observed on green twigs, blossoms, leaves, and fruits of blueberry trees grown in greenhouses in Cheongyang, Dangjin, Daejeon, and Jeju during disease survey in eight locations of Korea from 2007 to 2010. The disease symptoms were not observed in the fields of the other locations investigated. The disease incidence ranged 1~30% in the greenhouses investigated. A total of 27 single spore isolates of Botrytis species were obtained from the gray mold symptoms, and all the isolates were identified as Botrytis cinerea based on their morphological and cultural characteristics. Four isolates of the fungus were tested for pathogenicity to leaves of four varieties of blueberry trees by artificial inoculation with conidial suspensions. All the tested isolates caused gray mold symptoms on the leaves, which were similar to those observed in the greenhouses. This is the first report that B. cinerea causes gray mold of blueberry trees grown in greenhouses in Korea.
Diversity and Pathogenicity of Fusarium Species Associated with Head Blight of Job's Tears
Choi, Hyo-Won ; Hong, Sung-Kee ; Kim, Wan-Gyu ; Lee, Young-Kee ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 217~222
DOI : 10.4489/KJM.2010.39.3.217
Job's tears (Coix lacryma-jobi) is native to East Asia, and grains of the plant are used as health food and medicinal material. Head blight symptoms of the plant were frequently observed during disease surveys in Korea from 2006 to 2008. The symptoms were characterized as discoloration of husks, and subsequently inside of mature grains were shriveled or emptied. One hundred fifty nine isolates of Fusarium species were obtained from the disease symptoms of the plant collected from several locations in the country. Out of the isolates, the most frequently isolated Fusarium species were F. graminearum (34%), F. proliferatum (14.5%), F. verticillioides (10.1%), F. equiseti (6.9%), and F. fujikuroi (6.3%). Other Fusarium species isolated were F. subglutinans, F. semitectum, F. poae, and F. sporodochioides. Elongation factor 1 alpha gene sequences of the isolates were used for phylogenetic analysis. Analyses of the sequences revealed that the isolates were confirmed to be identical with each reference species of NCBI GenBank. Pathogenicity tests showed that F. graminearum, F. proliferatum and F. verticillioides were strongly virulent to grains of Job's tears. The present study is the first report of head blight of Job's tears caused by Fusarium species in Korea.
Diversity of Endophytic Fungi Isolated from the Rootlet of Pinus densiflora Colonized by Tricholoma matsutake
You, Young-Hyun ; Yoon, Hyeok-Jun ; Woo, Ju-Ri ; Rim, Soon-Ok ; Lee, Jin-Hyung ; Kong, Won-Sik ; Kim, Jong-Guk ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 223~226
DOI : 10.4489/KJM.2010.39.3.223
Endophytic fungi were isolated from the Pinus densiflora rootlet colonized by ectomycorrhizal fungus Tricholoma matsutake. Eighteen species of endophytic fungi were identified by analyzing rDNA-ITS sequence. As the result of the rDNA-ITS analysis, ascomycota of 15 species and Mucoromycotina of 3 species were isolated. Of all the endophytic fungi isolated, Penicillium sp. was confirmed as the highest frequency.
Screening of a New Fibrinolytic Substances-Producing Yeast
Jang, In-Taek ; Kim, Young-Hun ; Yi, Sung-Hun ; Lim, Sung-Il ; Lee, Jong-Soo ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 227~228
DOI : 10.4489/KJM.2010.39.3.227
Fibrinolytic activities of culture concentrates of various yeasts were investigated. The concentrates of the culture broth of Saccharomyces cerevisiae Y99-7 showed the strongest fibrinolytic activity of 25 mm (clear zone). The fibrinolytic activity of Saccharomyces cerevisiae Y99-7 was more high in the culture concentrates from PD broth rather than that of yeast extract-peptone dextrose cultures (clear zone : 22.7 mm).
Growth Profile of Some Yeasts in Pear Marc Extracts
Jang, In-Taek ; Kang, Min-Gu ; Na, Kwang-Chul ; Lee, Jong-Soo ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 229~230
DOI : 10.4489/KJM.2010.39.3.229
Growth profiles of Candida krusei KCTC 7213, Torulopsis sphaerica KCTC 7138 and Zygosaccharomyces rouxii KCCM 12066 in pear marc extract were determined. Candida krusei KCTC 7213 showed the highest growth in 20 hr cultivation at
, whereas both of Torulopsis sphaerica KCTC 7138 and Zygosaccharomyces rouxii KCCM 12066 established maximal growth by 25 hr of cultivation at
in pear marc extract. However, all of yeasts showed lower growth in pear marc extracts rather than those of YEPD medium.
Mutagenesis of of Hypsizygus marmoreus by Gamma Ray Irradiation
Kim, Jong-Kun ; Moon, Deok-Hun ; Seo, Geon-Sik ; Kang, Hee-Wan ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 231~234
DOI : 10.4489/KJM.2010.39.3.231
This study was performed to develop new Hypsizygus marmoreus cultivars that have enhanced functional materials and improved physiological characteristics with mutagenesis by gamma ray irradiation. Protoplasts of H. marmoreus brown strain HYM-056 were irradiated by gamma ray for mutagenesis, and then 2,000 clones of mutants were randomly selected and the fruiting bodies were induced by bottle culture. Among them, 157 isolates with fast-growing, heavy and many fruiting body-producing were selected. The isolates were cultured in plastic bottle containing rice bran, barley hulls and fir sawdust to form the fruiting bodies. About 100 days after inoculation, characteristic of fruiting bodies were investigated. The isolates were divided into 6 groups based on color, shape and size of pileus, and length, diameter, number and weight of stipe. In addition, the genetic variation of the isolates was analyzed by URP-PCR fingerprinting.
Agrobacterium-Mediated Transformation of Flammulina velutipes with NaOH Treatment
Shin, Dong-Il ; Park, Hee-Sung ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 235~238
DOI : 10.4489/KJM.2010.39.3.235
Agrobacterium harboring vector pCHBs with hygromycin phosphotransferase(hph) and hepatitis B virus surface antigen(HBsAg)gene was transformed into the mycelial culture of Flammulina velutipes. In particular, mild NaOH solution was treated to the mycelia before Agrobacterium infection step. This was purposed to generate putative surface wounds in the mycelial cell walls. The results showed that hygromycin-resistant(
) mycelia could be obtained only from NaOH-treated mycelia but not from intact mycelia. The integration of
gene in fungal genome was confirmed by PCR. In addition, a single transgene integration and heterologous protein expression in F. velutipes could be verified by Southern blot hybridization and western blot analysis, respectively. This study demonstrated an efficient tool for the Agrobacterium-mediated transformation of F. velutipes mycelia.
Eritadenin Contents Analysis in Various Strains of Lentinula edodes using LC-MS/MS
Park, Young-Ae ; Lee, Kyoung-Tae ; Bak, Won-Chull ; Kim, Myung-Kil ; Ka, Kang-Hyeon ; Koo, Chung-Duck ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 239~242
DOI : 10.4489/KJM.2010.39.3.239
Eritadenine, a potent compound of hypocholesterolemic activity, was investigated in relation to its content in domestic cultivars and wild types of shiitake (Lentinula edodes). Eighteens strains of shiitake were tested for the quantification of eritadenine by LC-MS/MS analysis. Among the strains, wild type-40 was highest as the content was 3.912 mg/g. Also, Soohyangko was 3.352mg/g, Sanlim No. 9 3.008mg/g, Chunbaegko 2.832 mg/g, Gaeulhyang and KFRI 675 both 2.792 mg/g as high-content strains. Soohyangko and Chunbaegko are applied strains for registration in 2010. Soohyangko is high-temperature type with concentrated fruiting, and 90% of production occurs in the first year, thus, recovery of cost is very fast. Chunbaegko is mid-temperature type with concentrated flushing, and produces "hwago", the best quality, in spring. Wild type-40 is excellent in productivity and is prepared for registration. Wild type-40 could be used as parent strain to make new strain with high eritadenine content.
Bioethanol Production using a Yeast Pichia stipitis from the Hydrolysate of Ulva pertusa Kjellman
Lee, Ji-Eun ; Lee, Sang-Eun ; Choi, Woon-Yong ; Kang, Do-Hyung ; Lee, Hyeon-Yong ; Jung, Kyung-Hwan ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 243~248
DOI : 10.4489/KJM.2010.39.3.243
We studied the repeated-batch process for the bioethanol production from the hydrolysate of Ulva pertusa Kjellman using yeast Pichia stipitis, which is able to assimilate C6- and C5-monosaccharides. During 180-hour operations, the repeated-batch process was carried out stably, and the average bioethanol concentration reached 11.9 g/L from about 30 g/L of reducing sugar in the hydrolysate. Meanwhile, the bioethanol yields, based on the reducing sugar and the quantitative TLC analysis, were 0.40 and 0.37, respectively, which corresponded to 78.4% and 72.5% of theoretical value, respectively. Throughout the quantitative process analysis, it was also demonstrated that 39.67 g-bioethanol could be produced from 1 kg of dried Ulva pertusa Kjellman. In this study, we verified that the bioethanol production from the hydrolysate of Ulva pertusa Kjellman was feasible using a yeast Pichia stipitis, particularly during the repeated-batch operation.
Metabolic Fate of Phenylalanine in the Corn Smut Fungus Ustilago maydis
Hyun, Min-Woo ; Kim, Seong-Hwan ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 249~253
DOI : 10.4489/KJM.2010.39.3.249
Cetecol has been known as a component of melanin in teliospores of the corn smut fungus Ustilago maydis. Its metabolic precursor has been assumed to be benzoic acid but it has not been proven yet. This study was carried out to verify the synthesis of benzoic acid and to chase its metabolic origin in U. maydis. For this aim, the catabolic process of phenylalanine was investigated by culturing the fungus in the complete medium containing L-
-trans-cinnamic acid. We detected trans-cinnamic acid, benzoic acid, 4-hydroxybenzoic acid and hydroxybenzoic acid derivatives from the extracts of the fungus cells and cultural filtrates by thin layered chromatography analysis. We also observed that the fungus could completely catabolize L-
-phenylalanine and produce
in the air. Conclusively, this study provided an evidence that U. maydis could produce benzoic acid through catabolic process of phenylalanine.
Stem Rot of Euphorbia marginata Caused by Sclerotium rolfsii
Kwon, Jin-Hyeuk ; Kang, Dong-Wan ; Kim, Min-Keun ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 254~255
DOI : 10.4489/KJM.2010.39.3.254
Stem rot symptoms of Euphorbia marginata were occurred in the herb exhibition field at Gyeongsangnam-do Agricultural Research and Extension Services in Korea. The typical symptom was started with watersoaking lesion on the stem then gradually rotted, wilted, and blighted, the severely infected plants were eventually died. The sclerotia of the pathogen were globoid in shape, 1~3mm in size and white to brown in color. The optimum temperature for mycelial growth and sclerotia formation on PDA was
. The hyphal width was 4~9
, and the typical clamp connection structures were observed in the hyphae of the fungus grown on PDA. On the basis of mycological characteristics and pathogenicity to host plants, this fungus was identified as Sclerotium rolfsii Saccardo. This is the first report of stem rot on E. marginata caused by S. rolfsii in Korea.
Influence of Germination Triggers on Control Efficacy of an Entomopathogenic Fungus Beauveria bassiana against Myzus persicae
Kim, Jeong-Jun ; Zhu, Hong ; Seok, Soon-Ja ; Lee, Sang-Yeob ;
The Korean Journal of Mycology, volume 39, issue 3, 2011, Pages 256~258
DOI : 10.4489/KJM.2010.39.3.256
This study was conducted to investigate agents inducing conidial germination of an entomopathogenic fungus, Beauveria bassiana KK5. Different chemicals including carbohydrates were mixed with conidia of B. bassiana and incubated on water agar for 12 hours. Fructose, mannose and skim milk were useful for spore germination compared to other chemicals. Bioassays against green peach aphids were conducted with the fungal conidia suspended in 1% fructose, mannose and skim milk. Of them, a mixture of skim milk plus conidia of B. bassiana KK5 showed the highest mortalities against
instar of green peach aphid.