• Title/Summary/Keyword: Phaseolus vulgaris

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The Pear Black Necrotic Leaf Spot Disease Virus Transmitted by Talaromyces flavus Displays Pathogenicity Similar to Apple stem grooving virus Strains

  • Shim Hye-Kyung;Hwang Kyu-Hyon;Shim Chang-Ki;Son Su-Wan;Kim Dong-Giun;Choi Yong-Mun;Chung Young-Jae;Kim Dae-Hyun;Jee Hyeong-Jin;Lee Suk-Chan
    • The Plant Pathology Journal
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    • v.22 no.3
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    • pp.255-259
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    • 2006
  • The pathogenicity to pear trees and other experimental hosts of the Apple stem grooving virus Korean isolate (ASGV-K) carried by a fungal vector, Talaromyces flavus was examined. ASGV-harboring T. flavus induced mild symptoms on virus-free pears. Symptom severity was intermediate between pears showing typical PBNLS and virus-free pears. Ten cultivars of Phaseolus vulgaris showed 35%-90% infectivity by direct infiltration into leaves and roots by ASGV-harboring T. flavus. Application of fungal cultures to soils showed 0%-70% infectivity depending on the P. vulgaris cultivar. Sap extracted from ASGV-infected Chenopodium quinoa induced similar symptoms on P. vulgaris at 25 days after inoculation. Similar symptoms were also detected on P. vulgaris which were inoculated with ASGV-harboring T.flavus. When healthy P. vulgaris leaves were challenged with sap extracted from P. vulgaris leaves infected with ASGV-harboring T. flavus, typical symptoms were observed. These data suggest that T. flavus mediates the transfer of ASGV to host plants.

Interconnections between the Rat Dorsal Raphe and the Locus Coeruleus Nuclei Demonstrated by Anterograde Tracing with Phaseolus Vulgaris Leucoagglutinin

  • Lee, Hyun S.
    • Animal cells and systems
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    • v.8 no.3
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    • pp.221-229
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    • 2004
  • The projections from the dorsal raphe (DR) to the locus coeruleus (LC) or vice versa were analyzed in the rat using an anterograde tracer, Phaseolus vulgaris leucoagglutinin (PHA-L) combined with serotonin (5-hydroxytryptamine, 5-HT) or dopamine-beta-hydroxylase (DBH) immunostaining. Following the injection of PHA-L into the middle DR, DR-originating fibers with varicosities have contacted DBH-immunolabeled cells in the rostral, middle, and caudal LC. Axon terminals were also observed in the subcoeruleus nucleus. When the PHA-L injection was confined within the caudal DR, axonal fibers with varicosities were observed mainly at the rostral pole of the LC. Following the injection of PHA-L into the caudal, principal LC, labeled fibers with varicosities have contacted 5-HT-immunolabeled neurons at dorsomedial, ventromedial, lateral wing, and caudal sub-divisions of the DR. The present anterograde study suggests that the DR or the LC nuclei communicate with each other in order to perform a variety of functions including vigilance, analgesia, and stress responses.

The Study of Purification and Crystallyzation from Etrlene induced Chitinase (강낭콩잎에 Ethylene을 처리하여 유도한 Chitinase의 분리정제와 결정화에 관한 연구)

  • 홍순강
    • Journal of environmental and Sanitary engineering
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    • v.10 no.1
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    • pp.126-131
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    • 1995
  • Chitinase, a potential pathogensis- related portein, was induced in the leaves of 30 day - old bean( phaseolus vulgaris ) plant with the treatment of 10 $\mu $ /mℓ ethylen for 30hrs. Chitinase was purified from the mature tissue of bean leaves( phaseolus vulgaris ) by ammonium sulfate precipitation followed by affinity chromatography on a regenerated chitin and sephadex G-75 chromatography. The purified chitinase gave a single band SDS- PAGE to be 32,000 Dalton. In order to elucidate the three- dimensional structure of chitinase and to shed light on the functional mechanism of this class of enzymes, the enzyme was tried to crystallize( Sitting Drop Method). Crystals grew at room temperature to their final size within two weeks(0.2mm $\times $0.2mm $\times $ 0.1 mm ), This enzyme are still continuing to crystallize for the study of X- ray.

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Hormonal Effect and Cytokinin Autonomy in callus Culture of Phaseolus vulgaris L. (식물 Hormone의 영향과 Cytokinin Autonomy)

  • 김상구
    • Journal of Plant Biology
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    • v.25 no.4
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    • pp.161-168
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    • 1982
  • The activities of auxins and cytokinins have been examined in the growth of callus tissue derived from Phaseolus vulgaris L. cv. Damyang. The synthetic auxin, picloram was the most effective in promoting callus growth and the range of effective concentrations (0.1$\mu{M}$ to 32$\mu{M}$) was broad. 2, 4-D also enhanced callus growth at the optimal concentration of 3.2$\mu{M}$. NAA promoted callus growth at relatively higher concentrations than other auxins tested. IAA was less effective in supporting callus growth. Cytokinin bearing saturated side chain ($N^6$-isopentyladenine) was approximately 30 times more active than the corresponding unsaturated compound, $N^6$-($\D^2$-isopentenyl) adenine. The abilities of cytokinin-autonomous growth were also examined. Callus tissues previously grown on concentrations lower and/or higher than optimal concentrations of cytokinins were better habituated in the subsequent passage. It was suggested that the development of cytokinin autonomy may be related to dosage-concentrations of cytokinin in the previous passage.

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