锌中毒玉米中的锌、铁与叶绿素代谢
Zinc, Iron, and Chlorophyll Metabolism in Zinc-toxic Corn.
作者信息
Rosen J A, Pike C S, Golden M L
机构信息
Department of Biology, Franklin and Marshall College, Lancaster, Pennsylvania 17604.
出版信息
Plant Physiol. 1977 Jun;59(6):1085-7. doi: 10.1104/pp.59.6.1085.
Abstract
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.
摘要
在水培条件下生长的玉米（Zea mays L. var. Barbecue杂交种）中研究了锌毒性和锌 - 铁相互作用。高锌显著降低了根和地上部的鲜重；增加铁含量在很大程度上但并非完全恢复了正常生长。对根和叶中锌和铁含量的相关分析表明，锌可能会干扰铁的转运；然而，锌毒性与叶片铁含量的降低并无关联。铁似乎确实会抑制锌的吸收和转运。锌中毒植株的黄化现象并非归因于叶片总铁含量的减少；然而，增加营养液中的铁含量可缓解这种黄化现象。锌和铁可能在某些部位确实存在相互作用。
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