Dr. Thirumal SivakumarAssociate Professor
Annamalai University, India
Ph.D. in Biology/Botany from Annamalai University, India
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Significant contribution has been made in the field of Plant Stress Physiological activities of crop plants like Sweet potato, solanam indicam, and tomato. Triazole compounds viz Triadimefon, Hexaconazole, Paclobutrazole, Difenoconazole,Tricyclazole induced alteration in the growth, metabolism and yield of crop plants. Triazole treated plants have higher photosynthetic pigments, chlorophyll ‘a’, ‘b’, carotenoids, xanthophyll. Carbohydrate metabolism of crop plants reducing sugar, starch, sucrose and carbohydrate metabolizing enzyme starch phosphorylase, sucrose synthase, α-amylase, β-amylase, invertase, and catalase activity. Antioxidant activity of trizole treated plants have higher content of antioxidant activity like ascorbic acid, α-Tocoperol, glutathione and antioxidant enzyme activities vize., peroxidase, ascorbate peroxidase, superoxide dismutase, glutathione reductase.
His extensive research work was carried out in the phytochemical analysis and invitro study of medicinal plant parts like leaf, stem, flower, fruits Alkaloids, steroids, Tannins, Flavonoids, Terpenoids, Saponins, Aromatic acids, Triterpenoids, Aminoacids, Phenolic compounds, Xantho Proteins, philobatanins, Carbohydrate, Proteins, Reducing sugar.
He is start to the Nanotechnolgical work in tuber crop (Sweet potato), tea, vigna radiatae, Gloriosa superba and catharanthus roseus. Green synthesis of silver nanoparticles using various parts of plants like leaves, flowers, roots, grains, tubers. In the current research field contribute to the synthesis, characterization studies using the various spectroscopy analyses UV-spectroscopy, FTIR, XRD, and GCMS. Nanoparticles shape, size were measured using the various microscopic analysis SEM, TEM, EDAX. Nanoparticles were used in the various fields such as antioxidants, antimicrobial activity, and anticancer activity.