Effects of zinc fertilization and irrigation on grain yield and zinc concentration of various cereals grown in zinc-deficient calcareous soils

Tansley Review No. 111

“…In leaves of different wheat cultivars, deficient supply of Zn decreased total SOD activity and, more distinctly, CuZn-SOD activity, whereas Mn-SOD activity was not affected by Zn deficiency (Cakmak et al, 1997(Cakmak et al, , 1998. Recently, similar results were found by in various wheat genotypes differing in sensitivity to Zn deficiency.…”

“…Overexpression of CuZn-SOD genes was also demonstrated in plants exposed to herbicide treatment (Perl et al, 1993), sulphur dioxide (Madamanchi et al, 1994), UV-B radiation (Willekens et al, 1994 ;Rao et al, 1996) and pathogenic infection (Mittler et al, 1996 ;Fodor et al, 1997). As shown under field conditions, chilling stress in citrus and drought stress in wheat became more pronounced in plants suffering from Zn deficiency (Cakmak et al, 1995 ;Ekiz et al, 1998). These results may be due to reduced activity of enzymes scavenging O # d − and H # O # in Zn-deficient tissues.…”

“…These results may be due to reduced activity of enzymes scavenging O # d − and H # O # in Zn-deficient tissues. In wheat plants, decreases in grain yield due to drought stress were more marked when plants were Zn-deficient (Ekiz et al, 1998). By affecting the synthesis and activity of antioxidative enzymes, Zn is an important factor in plant defence systems against destructive O # species.…”

Triticum dicoccoides: An important genetic resource for increasing zinc and iron concentration in modern cultivated wheat

“…dicoccon) are rich in seed Zn concentrations (Cakmak et al 1999a(Cakmak et al , 2000Ortiz-Monasterio and Graham 2000), they are, however, extremely sensitive to Zn deficient soils (Cakmak et al 1999a). In most cases, genotypes having higher tolerance to Zn-deficient soils contain similar or even lower concentrations of Zn in shoot or seed compared to genotypes with higher susceptibility to Zn deficient soils Cakmak et al 1997bCakmak et al , 1999aEkiz et al 1998). Rye and similarly Triticale are excellent crops tolerating Zn deficient soils, but do not accumulate high levels of Zn in seeds (Cakmak et al 1997a, b;Ekiz et al 1998) when grown in Zn deficient soils, respectively.…”

Zinc-enriched fertilisers as a potential public health intervention in Africa

“…Several studies reported significant differences in the Zn concentration of grains and the efficacy of soil or foliar Zn application between cultivars of rice and wheat (Yilmaz et al 1997;Ekiz et al 1998;Erdal et al 2002; Wi s s u w a e t a l . 2 0 0 8 ; Yang et al 2 0 11 a ; Khoshgoftarmanesh et al 2012;Phattarakul et al 2012;Wei et al 2012;Ghasemi et al 2013;Mabesa et al 2013), suggesting that agronomic and crop breeding biofortification efforts should be aligned.…”