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S. Varanavasiappan

Publications (10)

Real Time PCR Based Quantification of Banana Bunchy Top Virus (BBTV) Titre in Banana cv. Grand Naine (Musa acuminata)

N. Tanuja, A. Ramanathan, S. Varanavasiappan, E. Kokila Devi, L. Arul, D. Sudhakar, S. Vanitha, K. Soorianathasundaram & K. K. Kumar · Advances in Research · 2019

Banana Bunchy Top Disease (BBTD) is one of the most severe viral diseases affecting major banana growing belts in India. Banana Bunchy Top Virus (BBTV) is transmitted by a black banana aphid (Pentalonia nigronervosa L Coquerel) in a persistent manner. BBTV virions are limited to...

Open access Research Article 10.9734/air/2019/v20i430163

In silico Analysis of 7-Dehydrocholesterol Reductase Gene (Sl7-DR2) in Tomato: Linking Cholesterol Metabolism to Vitamin D Pathway

Poleboina Venkata Diwakar, L. Arul, T. Saraswathi, S. Varanavasiappan, N. Saranya & K. K. Kumar · International Journal of Plant & Soil Science · 2023

Tomatoes are the most popular vegetable crop worldwide and contain many health-promoting compounds. Most foods contain very little amount of vitamin D, and plants are very poor sources in the production of vitamin D. The 7-dehydrocholesterol reductase gene (Sl7-DR2) is responsibl...

Open access Research Article 10.9734/ijpss/2023/v35i203811

Diversity of Powdery Mildew Mycoparasite Ampelomyces quisqualis under Natural Ecosystem and Its Molecular Characterization

S. Keerthana, V. Sendhilvel, T. Raguchander, S. Varanavasiappan & R. Swarnapriya · International Journal of Plant & Soil Science · 2022

The powdery mildew are the most common diseases which widely affect crops in many countries. The mildew infection appeared on leaves, petiole, buds, inflorescence and other tender tissues of crops causing 65% of the crop loss. Even though the fungicidal spray to control the disea...

Open access Research Article 10.9734/ijpss/2022/v34i930913

Status and Characterization of Slow Wilt (Fusarium oxysporum) and Basal Wilt (Sclerotium rolfsii) Pathogens from Different Pepper Ecosystems of Tamil Nadu, India

S. Pavithra, S. Maruthasalam, I. Johnson, M. Mohanalakshmi & S. Varanavasiappan · International Journal of Plant & Soil Science · 2023

Black pepper (Piper nigrum L.) is grown extensively across many parts of Tamil Nadu. Pepper production is greatly affected by the fungal wilt complex diseases. In this study, the major pepper growing regions of Tamil Nadu were surveyed for two wilt complex diseases viz., slow wil...

Open access Research Article 10.9734/ijpss/2023/v35i203816

Antiviral Efficacy of Bacillus sp. against Groundnut bud necrosis orthotospovirus in Cowpea

C. Kishorkumar, S. Harish, G. Karthikeyan, Jeyasundara Sharmila, S. Varanavasiappan & M. Nivedha · International Journal of Plant & Soil Science · 2023

Tomato spotted wilt, a disease caused by Groundnut bud necrosis virus (GBNV), is a major disease affecting tomatoes causing great yield loss to the farming community. In this study, the GBNV-TNAU 1 virus isolate was obtained from infected plants and maintained through mechanical...

Open access Research Article 10.9734/ijpss/2023/v35i183345

Assessing the Single and Combined Toxicity of Chlorantraniliprole with Bacillus thuringiensis against Maize Fall Armyworm Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) under Laboratory Conditions

V. Gowtham, M. Muthuswami, N. Sathiah, S. Geetha, S. Varanavasiappan & D. Uma · International Journal of Plant & Soil Science · 2022

Use of synthetic insecticides for the management of fall armyworm (FAW) Spodoptera frugiperda (J. E. Smith) for a longer period will led to development of insecticide resistance. Identification of an eco-friendly synergistic agent to enhance the toxicity potential and reduced pes...

Open access Research Article 10.9734/ijpss/2022/v34i330845

Morpho-physiological Changes in Chilli under Drought and Heat Stress

V. Rajeswari, D. Vijayalakshmi, S. Srinivasan, R. Swarnapriya, S. Varanavasiappan & P. Jeyakumar · Current Journal of Applied Science and Technology · 2020

Drought spells and heat stress have become quite common and agricultural production would experience a lag in near future. The combined effect of heat and drought stress is expected to cause negative impact on crop growth. Hence, an experiment was framed to assess the morphologic...

Open access Research Article 10.9734/cjast/2020/v39i4731187

Computational Analysis Reveals that Dual Point Mutation in Rice SBEIIb Leads to Decrease in Starch Binding Affinity

Namisha Arora, Suhail Ashraf, N. Saranya, K. K. Kumar, L. Arul, D. Sudhakar, S. Varanavasiappan & E. Kokiladevi · International Journal of Plant & Soil Science · 2022

Aim: To check the effect of mutation on the binding affinity of Starch branching enzyme II with maltopentaose substrate. Place and Duration of Study: Department of Bioinformatics, Centre for Plant Molecular Biology and Bioinformatics, Tamil Nadu Agricultural University, Coimbator...

Open access Research Article 10.9734/ijpss/2022/v34i2231434

Biochemical Analysis of SBEIIb Mutant Rice Lines Generated through CRISPR/Cas-mediated Targeted Mutagenesis

Bishnupriya Gauda, Namisha Arora, D. Uma, S. Manonmani, K. K. Kumar, D. Sudhakar, L. Arul, S. Varanavasiappan & E. Kokiladevi · International Journal of Plant & Soil Science · 2023

Knock out of the Starch branching Enzyme [SBE] encoding genes lead to increase in the Apparent Amylose Content in cereals. Reduced SBE activity decreases the frequency of branch points in the Amylopectin fraction, while increasing the Amylose Content [AC]. AC is positively correl...

Open access Research Article 10.9734/ijpss/2023/v35i203847

In-silico Analysis and Functional Characterization of Rhizoctonia solani Effector Proteins

K. Prudhvi Raj Kumar, P. Vignesh, A. Shanthinie, D. Sudhakar, E. Kokiladevi, R. Raghu, M. Jayakanthan & S. Varanavasiappan · International Journal of Plant & Soil Science · 2022

Sheath blight is considered the second most prevalent disease in rice with no proper resistance genes identified for its resistance. Out of the 14 anastomosis groups in R. solani (AG1 to AG13 and AGBI), the AG1 group is mostly responsible for the infection in the rice. There are...

Open access Research Article 10.9734/ijpss/2022/v34i2231474