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Ferric pseudobactin 358 as an iron source for carnation

Author:
Duijff, B.J., Bakker, P.A.H.M., Schippers, B.
Source:
Journal of plant nutrition 1994 v.17 no.12 pp. 2069-2078
ISSN:
0190-4167
Subject:
Dianthus caryophyllus, Pseudomonas putida, iron, chlorophyll, biosynthesis, cultivars, reduction, chelates, roots, plant morphology, root hairs, nutrition-genotype interaction, siderophores
Abstract:
The influence of the siderophore produced by plant growth-promoting Pseudomonas putida strain WCS358, pseudobactin 358 (PSB358), on chlorophyll synthesis and iron(III) reduction in carnation cultivars Lena and Pallas grown in hydroponics was studied. Ferric pseudobactin 358 (4 micromolar) stimulated chlorophyll synthesis in cv. Lena, but not in cv. Pallas. FeEDDHA stimulated chlorophyll synthesis in both cultivars. Differences between the two carnation cultivars in the utilization of FePSB358 as an iron source are correlated with differences in iron efficiency reactions of the two cultivars: Fe-deficient plants of cv. Lena produced more and longer root hairs than Fe-deficient plants of cv. Pallas, and the ferric reducing activity of cv. Lena was higher than that of cv. Pallas.
Agid:
1419373