EFFECT OF ZINC STRESS ON FACTORS AFFECTING IRON UPTAKE IN NAVY BEAN

被引：7

作者：

BROWN, JC

机构：

[1] Plant Stress Laboratory, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, Beltsville

来源：

JOURNAL OF PLANT NUTRITION | 1979年 / 1卷 / 02期

关键词：

Fe deficiency; H+ release by roots; Reduction of Fe; Zinc deficiency; Zn toxicity and Fe-stress response;

D O I：

10.1080/01904167909362707

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Both Zn and Fe stresses (deficiencies) enhance the uptake of Fe in some plant cultivars but not in others. Release of H+ from 3+ 2+ roots and reduction of Fe to Fe by roots are two factors enhanced by Fe stress. The objective of this study was to determine if these factors are enhanced more in Zn-inefficient than Zn-efficient cultivars. Zn-inefficient Sanilac and Zn-efficient Saginaw navy beans (Phaseolus vulgaris L.) were used as test plants. Zinc-deficiency stress enhanced the Fe-stress-response mechanism in both cultivars but more Fe was taken up by Sanilac than by Saginaw. Sanilac developed Zn-deficiency symptoms, but Saginaw did not. In contrast, at toxicity caused Sanilac to develop Fe chlorosis, but Saginaw did not. Zinc toxicity induced Fe-deficiency-stress-response in Saginaw but not in Sanilac. The additional Fe available to Saginaw counteracted some of the toxic effects of Zn. Severity and nature of stress symptoms induced by Zn deficiency or Zn toxicity depend on the plant cultivar. © 1979 by Marcel Dekker, Inc.All rights reserved.

引用

页码：171 / 183

页数：13

共 25 条

[1]

Ambler J.E., Brown J.C., Agron. J, 61, pp. 41-43, (1969)

[2]

Ambler J.E., Brown J.C., Gaugh H.G., Plant Physiol., 46, pp. 320-323, (1976)

[3]

Brown J.C., Bioinorganic Chemistry - II, 5, (1977)

[4]

Brown J.C., Jones W.E., Agron. J., 69, pp. 399-404, (1977)

[5]

Brown J.C., Jones W.E., Agron. J., 69, pp. 405-409, (1977)

[6]

Brown J.C., Jones W.E., Agron. J., 69, pp. 410-414, (1977)

[7]

Brown J.C., Tiffin L.O., Agron. J., 54, pp. 356-358, (1962)

[8]

Brown J.C., Tiffin L.O., Plant Physiol., 40, pp. 395-400, (1965)

[9]

Brown J.C., Tiffin L.O., Holmes R.S., Specht A.W., Resnicky J.W., Soil Sci., 87, pp. 89-94, (1959)

[10]

Brown J.W., Leggett G.E., (1967)

← 1 2 3 →