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- Title
Role of iron and the TonB system in colonization of corn seeds and roots by Pseudomonas putida KT2440.
- Authors
Molina, María Antonia; Godoy, Patricia; Ramos-González, María Isabel; Muñoz, Nuria; Ramos, Juan L; Espinosa-Urgel, Manuel
- Abstract
Iron, which is abundant in corn (Zea mays L.) seeds, plays an important role in the initial establishment of Pseudomonas putida KT2440 populations on seeds. Sequestration of seed-borne iron by chelators decreases the capacity of KT2440 to initiate attachment to corn seeds. The importance of iron for this plant-bacteria interaction is further supported by the fact that mutations in the TonB system, which is key for iron uptake, result in reduced seed colonization. TonB is also a primary determinant of the fitness of P. putida in the rhizosphere, as a deletion mutant shows a clear competitive disadvantage during colonization of corn roots.
- Publication
Environmental microbiology, 2005, Vol 7, Issue 3, p443
- ISSN
1462-2912
- Publication type
Journal Article
- DOI
10.1111/j.1462-2920.2005.00720.x