Zinc, Iron, and Chlorophyll Metabolism in Zinc-toxic Corn | Zendy

Judith A. Rosen | Zendy; Carl S. Pike | Zendy; Marc L. Golden | Zendy

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Zinc, Iron, and Chlorophyll Metabolism in Zinc-toxic Corn

Author(s) -

Judith A. Rosen,

Carl S. Pike,

Marc L. Golden

Publication year - 1977

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.59.6.1085

Subject(s) - chlorosis , zinc , chromosomal translocation , shoot , toxicity , zea mays , chemistry , chlorophyll , nutrient , metabolism , phytotoxicity , absorption (acoustics) , zinc toxicity , botany , agronomy , horticulture , biology , biochemistry , materials science , organic chemistry , composite material , gene

Zinc toxicity and Zn-Fe interactions were studied in corn (Zea mays L. var. Barbecue hybrid) grown in hydroponic culture. High Zn greatly reduced the root and shoot fresh weights; increasing Fe largely, but not completely, restored normal growth. Correlation analyses of root and leaf Zn and Fe contents suggested that Zn may interfere with the translocation of Fe; however, Zn toxicity was not associated with a diminished leaf Fe content. Fe did appear to retard both the absorption and the translocation of Zn. The chlorosis of Zn-toxic plants is not attributable to diminshed total leaf Fe; however, this chlorosis is relieved by increasing nutrient Fe. Zn and Fe probably do interact at some site.

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