Nickel Is Not Required for Apourease Synthesis in Soybean Seeds | Zendy

Rodney G. Winkler | Zendy; Joseph C. Polacco | Zendy; D. L. Eskew | Zendy; Ross M. Welch | Zendy

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Nickel Is Not Required for Apourease Synthesis in Soybean Seeds

Author(s) -

Rodney G. Winkler,

Joseph C. Polacco,

D. L. Eskew,

Ross M. Welch

Publication year - 1983

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.72.1.262

Subject(s) - nickel , chemistry , agronomy , botany , biology , horticulture , organic chemistry

Soybeans (Glycine max L. Merr. cv ;Maple Presto') harvested from plants cultured in nickel-free medium had <0.005% the activity of nickel-sufficient beans and only 15% the activity of a urease-null variety, Itachi. However, whereas Itachi has no detectable urease protein, nickel-free beans of the variety Maple Presto exhibit normal or near normal levels of urease apoprotein. Thus, nickel isn't necessary for urease apoprotein synthesis. The apoprotein wasn't activated by nickel in vitro but, upon seed imbibition of nickel, urease was partially activated. This in vivo activation was not inhibited by cychoheximide.

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