Biochemical changes in barley plants after excessive supply of copper and manganese

By K. Demirevska-Kepova, L. Simova-Stoilova, Z. Stoyanova, R. Hölzer, Urs Feller. 2004

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Salicylic acid-induced adaptive response to copper stress in sunflower (Helianthus annuus L.) (2006, background): “The accumulation of proteins in plant organs due to heavy metals is well known ( Demirevska-Kepova et al. 2004 ).”
Heavy metals toxicity in plants: An overview on the role of glutathione and phytochelatins in heavy metal stress tolerance of plants (2010, background): “Cu is also an essential component of various proteins like plastocyanin of photosynthetic system and cytochrome oxidase of respiratory electron transport chain (Demirevska-kepova et al., 2004).”
Manganese-excess induces oxidative stress, lowers the pool of antioxidants and elevates activities of key antioxidative enzymes in rice seedlings (2011, background): “2004), whereas in barley plants no alteration in SOD activity could be observed at Mn excess (Demirevska-Kepova et al. 2004).”
MANGANESE AS ESSENTIAL AND TOXIC ELEMENT FOR PLANTS: TRANSPORT, ACCUMULATION AND RESISTANCE MECHANISMS (2010, background): “…and marginal) and necrotic leaf spots are very common and have been reported in the whole plants of canola (Moroni et al., 2003), clover (Rosas et al., 2007), ryegrass (Mora et al., 2009) as well as in leaves of barley and cowpea (Demirevska-Kepova et al., 2004; Führs et al., 2008) (Table 2).”