Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Research in Plant Disease
Journal Basic Information
Journal DOI :
Korean Society of Plant Pathology
Editor in Chief :
Volume & Issues
Volume 2, Issue 3 - Sep 1986
Volume 2, Issue 2 - May 1986
Volume 2, Issue 1 - Jan 1986
Selecting the target year
Morphology and Intracellular Appearance of Euonymus Vein Clear Virus
Chang Moo Ung ;
Research in Plant Disease, volume 2, issue 1, 1986, Pages 1~1
Negatively stained dip preparations from Euonymus showing vein clear symptoms revealed bacilliform particles. The particles tentatively referred to as the Euonymus vein clear virus(EVCV) have a relatively complex structure, measuring 230-280nm in length and 70-80nm in diameter. They have an envelope, 8-10nm thick, provided with evenly spaced beadlike projection about 5-6nm long. The inner tubular core which had no envelope showed helical structures, 200-220nm long, and 50-55nm in diameter. This inner tubular core is interpreted as the virus nucleocapsid. A striking association of virus particles with the nuclei of infected cells was apparent from sections which showed numberous virus particles at the nuclear periphery and in what appeared to be intranuclear virus particle inclusions. Careful examination of these apparent inclusions revealed the presence of the nuclear envelope surrounding them, in addition to cytoplasmic organelles within them. Such profiles were interpreted as having arisen when the sections passed through invaginations of the cytoplasm into the nucleus. In all the sections showing virus particles associated with the nucleus, large number of virus particles were found to be present in expanded areas between the two lamellae of the nuclear envelope. This location is suggested as a possible site of virus assembly. Serveal micrographs of particles found in this location suggested incorporation of the inner lamella of the nuclear envelope into the viral envelope. Various micrographs indicated a possible helical arrangement of certain components present in the virus core.
Tolerance of Nicotiana tabacum Cultivars Dixie Bright 244-2, McNair 30, and Golden Stock Penish to Strains of Potato Virus Y
Park Eun Kyung ; Gooding G. V. ;
Research in Plant Disease, volume 2, issue 1, 1986, Pages 12~12
The reaction of seven cultivars of Nicotiana tabacum to eight naturally occurring strains of potato virus Y from tobacco and one from potato was determined by mechanical inoculations in greenhouse tests. Dixie Bright 244-2, McNair 3D, and Golden Stock Penish were highly tolerant to three mild strains, two from the United States and one from Korea, and to four severe strains, one each from the United States, West Germany, South Africa, and Korea. They also had some tolerance to a severe strain from Child and one from United States. Virus concentration in infected leaf tissue was virus strain-and cultivar-dependent.
Disease Occurrence and Overwintering of Rice Dwarf Virus
Lee Key Woon ;
Research in Plant Disease, volume 2, issue 1, 1986, Pages 17~17
The viruliferous vectors of the rice dwarf virus, nymphs of Nephotettix cincticeps did not overwinter in Uljin, although the disease occurred in fields. When considered the relationship between seasonal changes of vector and disease occurrence, there were 5 and 3 peaks in a year in occurrence of vector and disease, respectively. The overwintered adults and the nymphs of the 2nd and 3rd generation served as the major transmittor of the. virus. In a field where the disease has been a problem for years, the ratoon hills rice cultivar Milyang No. 30 was infected
with the rice dwarf virus. When nonviruliferous nymphs were fed on the infected ratoon hills for 11 to 30 days, viruliferous nymphs overwintered, increased to
. The winter barley infected with rice dwarf virus did not survive in winter, suggesting that infected barley may not serve as a inoculum source.
] Assimilation and Metabolism of
Assimilates in Whole Plants of Spring Barley In Relation to Adult-Plant Resistance to Powdery Mildew
Hwang Byung Kook ; Ibenthal Wolf-Dieter ; Heitefuss Rudolf ;
Research in Plant Disease, volume 2, issue 1, 1986, Pages 22~22
The effect of powdery mildew infection on the
assimilation and metabolism of
assimilates was studied with spring barley cultivars, susceptible Peruvian and adult-plant resistant Asse at the four-leaf stage. No consistent differences between Peruvian and Asse were revealed in
assimilation and metabolism of
assimilates in healthy whole plants. In the two cultivars,
assimilation and translocation of assimilates decreased as the number of infected leaves increased. Despite the same infection intensity,
assimilation was less inhibited in Asse than Peruvian. Infection reduced the fixation of
in noninfected fourth leaves of Peruvian more severely than that of Asse. Infection of the lower 3 leaves also inhibited the incorporation of 14 C into carbohydrates such as fructose and glucose in noninfected fourth leaves and their translocation into leaf sheathes, the inhibitions being greater in Peruvian than Asse. In the infected third leaves, there was a reduction of 14 C-activity in carbohydrates, more
labeled fructose and glucose being retained in Peruvian. The stimulation of
organic acid synthesis in all plant organs was more pronounced in Peruvian than Asse. Powdery mildew markedly increased the incorporation of
into amino acids in infected third and noninfected fourth leaves, but reduced their translocation to the leaf sheathes. A greater rise of
activity in some amino acids in the two leaves was found in Peruvian than Asse.
Two Species of Colletotrichum Associated with Anthracnose of Lycium chinense
Lee Je Hyeon ; Yu Seung Hun ; Back Moon Ki ; Kim Kwang Suk ;
Research in Plant Disease, volume 2, issue 1, 1986, Pages 31~31
The symptom of anthracnose of chinese matrimony vine (Lycium chinense Mill) was darkbrown to black, watersoaked lesions with acervuli on fruits. Field survey revealed that the incidence rate of anthracnose ranged from
. to Colletotrichum gloeosporioides Penz and C. dematium(Fr.) Grove were identified as the causal organisms of the disease. C. gloeosporioides and C. dematium produced severe symptoms on fruits resulting in complete necrosis, but produced no or mild symptoms on leaves and stems of chinese matrimony vine. Of three isolates of C. dematium, isolate I and isolate III caused severe infection on immature fruits and isolate I was the most pathogenic on mature fruits of the plant. Isolates II of C. dematium caused relatively severe lesions on pepper fruit, but C. gloeosporioides was pathogenic on apple fruit.
Biochemical Reactions of Barley Leaves at Intervals After Inoculation with Erysiphe graminis f. sp. hordei
Song Dong Up ; Cho Baik Ho ; Kim Ki Chung ;
Research in Plant Disease, volume 2, issue 1, 1986, Pages 37~37
Papilla and cytoplasmic aggregates clearly formed on the epidermal cells of barley leaves in response to the primary germ-tubes of Erysiphe graminis f. sp. hordei, but their sizes were much smaller than those in response to the appressoria. Some cells of barley leaves exposed to powdery mildew for 36-48h were more deeply stained as compared to the other cells by acid fuchsin. However, the content of malondialdehydein in powdery mildewed leaves, one of the product of lipid peroxidation, did not increase by 96h after inoculation. Positive reactions for callose, protein and phenolics were recognized in the papilla and cytoplasmic aggregates at 6h after inoculation, but cutin, suberin, cellulose and lignin were not noticeable until 72h after inoculation. The total phenol content in methanol extracts increased with increasing time after inoculation. All histochemical reactions were not race-specific in barleypowdery mildew combinations tested.
Effect of Organic Matter on the Occurrence of Fusarium Wilt in Cucumber
Seo In Seuk ;
Research in Plant Disease, volume 2, issue 1, 1986, Pages 43~43
Fusarium wilt caused by Fusarium oxysporum f. sp. cucumerinum has caused high damage in cucumber under greenhouse condition. This disease was suppressed
by application of organic matters compared with natural cropping soils. The suppression effect was the highest in the mushroom humic compost and fowl excretion matter among the various organic matters, varying with kinds of organic matters and degrees of humic resolvability. There was a slight difference in severity of fusarium wilt between sterilized organic matters and soils. The disease occurrence was delayed more in the nonsterilized organic matters and soils than in the sterilized ones. At 30 days after inoculation of F. oxysporum, numbers of Actinomycetes, fungi and bacteria were considerably increased, whereas F. oxysporum was decreased in the organic matter amended-soils compared with natural control soils.
Identication of Bean Yellow Mosaic Virus from Trifolium repens
Ryu Gab Hee ; Lee Soon Hyung ; La Yong Joon ;
Research in Plant Disease, volume 2, issue 1, 1986, Pages 48~48
The virus isolated from white clover, Trifolium repens showing mosaic symptom was identified as bean yellow mosaic virus (BYMV) based on the host range, physical properties, aphid transmission, serology and morphology of the virus particles. Chenopodium amaranticolor and C. quinoa produced local lesions on the inoculated leaves and chlorotic spot on the upper leaves. Broad bean and cowpea produced local lesions on the inoculated leaves and mosaic with vein necrotic symptoms on the upper leaves. French bean showed vein necrosis on the inoculated leaves, yellow mosaic on the upper leaves and bud blight. The average size of virus particles was 740nm in length. The virus was also transmitted by Myzus persicae. The thermal inactivation point of the virus isolate was
, the dilution end point
and the longevity in vitro was 3 days Serological tests with the virus purified from Trifolium repens were positive to BYMV antiserum.