Exogenous hydrogen peroxide increases dry matter production, mineral content and level of osmotic solutes in young maize leaves and alleviates deleterious effects of copper stress

Botanical Studies
Sule Guzel, Rabiye Terzi

Abstract

The effects of exogenously applied H2O2 on growth, water status, the mineral ion content (Na(+), K(+), Ca(2+), Mg(2+) and Cu(2+)), proline, total sugars and soluble proteins were assessed in leaves of maize (Zea mays L.) cultivars, Akpinar and Pegaso exposed to excess copper (0.5 mM). Seedlings were grown in equal-sizes plastic pots and irrigated with Hoagland nutrient solution containing H2O2 or/and copper. Different treatments taken for pot experiments were named as the control (C), H2O2 treatment only (H2O2), excess Cu (Cu) and, Cu stress combined with H2O2 pretreatment (Cu + H2O2). Treatment of H2O2 caused the increases in growth, water content, mineral concentration, proline, total sugar and soluble protein contents compared to the control groups in the leaves of both cultivars. Yet excess copper caused reductions in the growth, leaf water potential, Na(+), K(+), Ca(+), Mg(2+) concentrations and soluble protein levels but increases in proline, total soluble sugars and Cu(2+) contents compared to the control group. Dry matter, leaf water potential and mineral content of Cu + H2O2 group revealed a lower decrease than Cu group ones. A higher increase was also observed in proline and total sugar contents of Cu + H2O2 group tha...Continue Reading

References

Feb 13, 2001·Plant Science : an International Journal of Experimental Plant Biology·C T. ChenC H. Kao
Nov 1, 2005·Journal of Plant Physiology·André Dias de Azevedo NetoEnéas Gomes-Filho
May 19, 2009·Journal of Plant Physiology·Shuang-Long YangMing Gong
Jan 6, 2011·Journal of Integrative Plant Biology·Fang Jie XuXian Yong Lin

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Citations

May 21, 2016·Frontiers in Plant Science·Ann CuypersEls Keunen
Nov 14, 2020·The Science of the Total Environment·Carolina MerinoFrancisco Matus

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Methods Mentioned

BETA
environmental stresses

Software Mentioned

SPSS

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