Effects of silicon on mineral composition of sorghum grown with excess manganese¹

Efeito do silicato de cálcio no teor de silício no solo e na produção de grãos de arroz de sequeiro

“…A presença do Si na planta tem aumentado a tolerância do arroz à toxidez de Mn e Fe, fato atribuído à maior oxidação que esses dois elementos sofrem na rizosfera (Galvez et al, 1989).…”

Relations Between Mn Concentration and Yield, Nutrient, Water Status, and Gas Exchange Parameters of Tomato

“…A natural mechanism against Mn stress in plant organisms is to accumulate it at cell sites that are relatively inactive physiologically (Horst, 1988). On the other hand, there was found a positive influence of Mn treatment on the content of phosphorus in plant tissue (Clark, 1982;Galvez et al, 1989). A number of authors have reported that under Mn deficiency in plants, cell metabolism cannot efficiently control the excess formation of various oxygen radicals, leading to oxidative damage Marschner, 1988, 1992;Tanaka et al, 1995;Yu et al, 1998;Yu and Rengel, 1999).…”

“…An imbalance of Mn can disturb the uptake of other nutrients such as calcium, magnesium, iron, zinc (Foy et al, 1981;Fleming, 1989;Kazda and Znacek, 1989;Shenker et al, 2004;Lee et al, 2011), phosphorus, potassium and sodium (Kasraei et al, 1996). Galvez et al (1989) reported that increased levels of Mn treatment reduced the uptake of potassium, calcium, magnesium, zinc, copper and silicon. A natural mechanism against Mn stress in plant organisms is to accumulate it at cell sites that are relatively inactive physiologically (Horst, 1988).…”

Effect of Manganese Nutrition on Content of Nutrient and Yield of Lettuce (Lactuca Sativa L.) in Hydroponic/Wpływ Żywienia Manganem Na Zawartość Składników I Plonowanie Sałaty (Lactuca Sativa L.) W Hydroponice

“…Manganese is antagonistic ion in relation to iron and calcium [44] and potassium, magnesium, zinc and copper [16,20,45,46]. This microelement reduced also content other metallic microelements in plants [19].…”