Antifungal Acetylinic Thiophenes from Tagetes Minuta: Potential Biopesticide Supradip Saha1*, Suresh Walia1, A
Journal of Applied Botany and Food Quality 85, 207 - 211 (2012) 1Indian Agricultural Research Institute, New Delhi, India 2India Institute of Sugarcane Research, Lucknow, U.P., India Antifungal Acetylinic Thiophenes from Tagetes minuta: Potential Biopesticide Supradip Saha1*, Suresh Walia1, A. Kundu1, B. Kumar1, Deeksha Joshi2 (Received August 11, 2012) Summary of which depends on photodynamic activation (HUDSON and TOWERS, 1991), act as antibiotics, insecticides, nematicides and Apart from thiophenes, which possess wide range of biocidal fungicides (GOMMERS, 1981; MARES et al., 1990; HUDSON, et al., activity, aerial parts of Tagetes sp contain essential oil. Oil com- 1983; ROMAGNOLI et al., 1994, 1998). Further, constituents of ponents were reported to have antifungal activity, thus making essential oil, mainly (Z)- and (E)-ocimenones, along with piperitone, whole plant of Tagetes very useful for exploiting as natural piperitenone, limonene, tagetone and caryophyllene, are the major fungistatic agent. In the present study, Tagetes minuta grown in terpenes present in leaves (VASUDEVAN et al., 1997). In addition, north western Himalayan condition were evaluated for its potential HETHELYI et al. (1986) assumed that the presence of linalool and for use as antifungal agent. Flower essential oil showed minimal linalyl acetate characterizes Indian Tagetes patula oil. Due to the antifungal activity. Whereas, leaf essential oil was found signifi cant high degree of chemodiversity observed within essential oils of antifungal activity against three phytopathogenic fungi out of eight Tagetes sp., biological activities also subjected to vary. However, tested fungi. ED values were 165, 175 and 110 µg mL-1 against 50 even though the various properties of the Tagetes plant are well Rhizoctonia solani, Sclerotinia sclerotiorum and Sclerotium rolfsii, known, less attention has been focused on the studies of biological respectively.
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