Dazhuang Qi1,2,4,#, Meixia Liang1,2,4,#, Fudong Jiang3, Jianzhao Li1,2,4, Xuqiang Qiao1,2,4,*, Hongxia Zhang1,2,4,*
Phyton-International Journal of Experimental Botany, Vol.89, No.4, pp. 943-955, 2020, DOI:10.32604/phyton.2020.013801
Abstract Manganese (Mn) is one of the essential microelements in all organisms.
However, high level of Mn is deleterious to plants. In this study, the effects of exogenous manganese application on mineral element, polyamine (PA) and antioxidant
accumulation, as well as polyamine metabolic and antioxidant enzyme activities,
were investigated in Malus robusta Rehd., a widely grown apple rootstock. High
level of Mn treatments decreased endogenous Mg, Na, K and Ca contents, but
increased Zn content, in a Mn-concentration-dependent manner. Polyamine metabolic assays revealed that, except the content of perchloric acid insoluble bound
(PIS-bound) spermine, which increased significantly, the contents of putrescine… More >
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