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University of Agricultural Sciences, Bengaluru

University of Agricultural Sciences Bangalore, a premier institution of agricultural education and research in the country, began as a small agricultural research farm in 1899 on 30 acres of land donated by Her Excellency Maharani Kempa Nanjammanni Vani Vilasa Sannidhiyavaru, the Regent of Mysore and appointed Dr. Lehmann, German Scientist to initiate research on soil crop response with a Laboratory in the Directorate of Agriculture. Later under the initiative of the Dewan of Mysore Sir M. Vishweshwaraiah, the Mysore Agriculture Residential School was established in 1913 at Hebbal which offered Licentiate in Agriculture and later offered a diploma programme in agriculture during 1920. The School was upgraded to Agriculture Collegein 1946 which offered four year degree programs in Agriculture. The Government of Mysore headed by Sri. S. Nijalingappa, the then Chief Minister, established the University of Agricultural Sciences on the pattern of Land Grant College system of USA and the University of Agricultural Sciences Act No. 22 was passed in Legislative Assembly in 1963. Dr. Zakir Hussain, the Vice President of India inaugurated the University on 21st August 1964.

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Subject: Plant Pathology × Author: ASHWINI, B.N. × Start date: 2012 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    MOLECULAR CHARACTERIZATION OF TOMATO MOSAIC VIRUS AND CUCUMBER MOSAIC VIRUS INFECTING TOMATO (Solanum lycopersicum L.) AND INDUCTION OF DEFENSE USING BIOMOLECULES
    (University of Agricultural Sciences, Bangalore, 2022-03-23) ASHWINI, B.N.; NAGARAJU, N.
    Tomato mosaic virus (ToMV) and cucumber mosaic virus (CMV), are considered as the most important virus diseases infecting tomato. The characterized ToMV-To-Kar isolate genome had 6380 nucleotides and shared 97.00- 99.56 per cent nucleotide identity with other ToMV isolates/strains. Tripartite CMV-To-Kar isolate comprised of RNA1 3360 nt), RNA2 (3050 nt) and RNA3 (2217 nt) shared 92.00-98.58, 91.12 -98.84 and 92.03 - 98.23 per cent nucleotide identity with subgroup IB of CMV respectively. Among 20 different biomolecules tested for induced defense, least mean ToMV disease severity (3.33 %) was observed in plants primed with milk and Simarouba glauca 5.00%)correspondingly with higher defense enzyme activities i.e., PO (2.10 and 4.95 fold), PPO (3.06 and 1.74 fold) and PAL (1.45 and 1.37 fold) and with 3.59 and 3.22 fold increased accumulation of SA, respectively. Similarly, a great reduction in CMV disease severity was observed in S. glauca and milk i.e., 100.0 and 87.50 per cent respectively. They recorded enhanced PO (4.57 and 2.67 fold), PPO (1.47 and 3.05 fold) and PAL (1.13 and 1.17 fold) activities with 3.82 and 3.29 fold change accumulation of SA, respectively. The defined biomolecules showed restrictive activity of Myzus persicae with relative deterrence index between 0-1 in detached leaf assay, whole plant assay and also least number of aphids in leaf disc assay. Out of 35 entries screened for resistance against ToMV and CMV under glasshouse conditions, TLB-409-1-2, LA3924 and Sankranti showed resistant and moderately resistant reaction to CMV and ToMV respectively.