Abstract
Hawkeye (Fe-efficient) and PI-54619-5-1 (Fe-inefficient) soybeans (Glycine max [L.] Merr.) were grown in mixed and monoculture nutrient solutions to evaluate an inhibitory effect of PI-54619-5-1 on the uptake of Fe by Hawkeye. The ability of Hawkeye to take up Fe (Fe-stress response) was dependent on the degree of Fe stress (Fe deficiency) and was not the result of an inhibitory substance released by PI-54619-5-1 in mixed culture (Hawkeye + PI-54619-5-1).
The degree of Fe stress in Hawkeye was dependent on the amount of Fe taken up by the plant. Hawkeye took up more Fe and developed less Fe stress in mixed than in monoculture because in mixed culture PI-54619-5-1 did not utilize Fe as efficiently as Hawkeye which allowed more Fe to be available per HA plant. Thus, Fe-stress response, rather than any inhibitory substances produced by PI-54619-5-1 plants, controls the uptake of Fe in Hawkeye soybean.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Ambler J. E., Brown J. C., Gauch H. G. Effect of zinc on translocation of iron in soybean plants. Plant Physiol. 1970 Aug;46(2):320–323. doi: 10.1104/pp.46.2.320. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Brown J. C., Tiffin L. O. Iron Stress as Related to the Iron and Citrate Occurring in Stem Exudate. Plant Physiol. 1965 Mar;40(2):395–400. doi: 10.1104/pp.40.2.395. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Elmstrom G. W., Howard F. D. Promotion and inhibition of iron accumulation in soybean plants. Plant Physiol. 1970 Mar;45(3):327–329. doi: 10.1104/pp.45.3.327. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Steinberg R. A. Symptoms of Molybdenum Deficiency in Tobacco. Plant Physiol. 1953 Apr;28(2):319–322. doi: 10.1104/pp.28.2.319. [DOI] [PMC free article] [PubMed] [Google Scholar]