Induction of Systemic Resistance of Benzothiadiazole and Humic Acid in Soybean Plants Against Fusarium Wilt Disease

Abstract

The ability of benzothiadiazole (BTH) and/or humic acid (HA) used as seed soaking to induce systemic resistance against a pathogenic strain of Fusarium oxysporum was examined in four soybean cultivars under greenhouse conditions. Alone and in combination the inducers were able to protect soybean plants against damping-off and wilt diseases compared with check treatment. These results were confirmed under field conditions in two different locations (Minia and New Valley governorates). The tested treatments significantly reduced damping-off and wilt diseases and increased growth parameters, except the number of branches per plant and also increased seed yield. Application of BTH (0.25 g/L) + HA (4 g/L) was the most potent in this respect. Soybean seed soaking in BTH + HA produced the highest activities of the testes of oxidative enzymes followed by BTH in the four soybean cultivars. HA treatment resulted in the lowest increases of these oxidative enzymes. Similar results were obtained with total phenol but HA increased total phenol more than did BTH in all tested cultivars.

Effect of elicitors on physiomorphological and biochemical parameters of Indian mustard (Brassica juncea) and rapeseed (B. napus)

“…Exogenous application of SA and BTH , 2231-5209 (Online) All Rights Reserved © Applied and Natural Science Foundation www.ansfoundation.org activate a number of defense related genes, leading to plant protection against various pathogens (Vernooij et al, 1995;Lawton et al, 1996). These two have successfully been used to induce resistance to a wide range of diseases on field crops (Abdel-Monaim et al, 2011;Farouk and Osman, 2012;Mandavia et al, 2012). They also play an important role in regulating many aspects of plant growth and development (Raskin, 1992).…”

Control of peanut root-rot using some chemical substances

“…Humic substances have specific chemical structure and contain various functional groups that determine the role of the humus in the environment (Tolpa et al, 1976). Thus, humic substances also influence the growth of plants including their germination and nourishment on the presence of microorganisms especially the phytopathogenic ones (Tolpa et al, 1976;Abdel-Monaim et al, 2011 andAbdelKader et al, 2012). Env.…”

Expression of Defense Responses in Tomato against Vascular Wilt and Fruit Borer through Consortia of Fluorescent Pseudomonads and Entomopathogenic Fungi

“…Fusarium wilt caused by Fusarium oxysporumf.sp. lycopersici (Sacc) (Abdel-Monaim, 2012), and Fruit borer Helicoverpa armigera is a major yield limiting factors of tomato in India…”