PNABD246.pdf

*0169 Regupathy, A. ; Rathnasamy, R. ; Venkatnarayanan, D. ; Subramaniam,
T.R. 1975. Physiology of yellow mosaic virus in green gram, Phaseolus aureus
Roxb. with reference to its preference by Empoasca kerri Pruthi. CURRENT
SCIENCE, v.44(16):577-578. [En] (REP.MB-0997)
Populations of the non-vector leafhopper, Empoasca kerr, were consistently
higher on Vigna radiata plants infected with mungbean yellow mosaic virus than
on healthy plants. Though total nitrogen was reduced in diseased plants,
different forms of nitrogen were higher. Viral infection also altered amino
acid content, both qualitatively and quantitatively. Diseased leaves had a
lower sugar, magnesium and potassium content, whereas moisture, phosphorus, and
calcium were not affected. LEMS]
*0170 Shankar, K. ; Summanwar, A.S. 1975. Cytopathological studies of
yellow mosaic virus disease of mung. INDIAN PHYTOPATHOLOGY, v.28:145. [En]
(A:PS)
MEETING: Annual Meeting of Indian Phytopathological Society, 27th -- New
Delhi, India, Dec 31, 1974
Cytological studies were conducted on yellow mosaic disease in mungbean to
detect the presence of the virus in the host and in the vector Bemisia tabaci
(whitefly). When the epidermal cells from the diseased and healthy leaves were
treated with a fluorescent dye, acridine orange, and examined under fluorescent
microscope, the virus appeared as orange red fluorescing inclusions in the
cytoplasm of the cells from diseased leaf only. Among the various cytological
stains used in light microscopic investigations, Pyronine G-methyl green
combination proved superior over other stains for differentiations between the
nuclei and virus inclusions. The virus was located in the diseased leaf
epidermal cell as red staining masses which were absent in healthy ones. The
accumulation of dark orange staining mass was noticed in the first 2-3
abdominal segments of the whiteflies fed on diseased mungbean plants but not in
the whiteflies fed on healthy plants. [AS]
*0171 Tripathi, R.K. ; Vohra, K. ; Beniwal, S.P.S. 1975. Changes in
phenoloxidase and peroxidase activities and peroxidase isoenzymes in yellow
mosaic virus infected-mung bean (Phaseolus aureus L.). INDIAN JOURNAL OF
EXPERIMENTAL BIOLOGY, v.13(5):513-514. [En] (REP.MB-1591)
Differences in total proteins, polyphenol oxidase, and peroxidase between
leaves of mungbean cultivar H 45 (susceptible to mungbean yellow mosaic virus)
and LM 170 (tolerant) were compared. The diseased leaves of both varieties
showed higher activities of polyphenol oxidase and peroxidase. Both starch gel
electrophoresis and DEAE-cellulose column chromatography showed that the
diseased leaves of LM 170 contained a higher number of protein peaks and
isoperoxidases than healthy leaves of the same variety. [AS]
*0172 Rathi, Y.P.S. ; Nene, Y.L. 1976. Influence of different host
combinations on virus-vector relation of mungbean yellow mosaic virus.
PANTNAGAR JOURNAL OF RESEARCH, v.1(2):107-111. [EnJ [En Abst] (REP.MB-2423)
Influence of different source-test comuinations on virus-vector relation of
mungbean yellow mosaic virus (MYMV) was studied. The minimum acquisition and
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