Plant and Soil

, Volume 312, Issue 1–2, pp 7–14 | Cite as

Lorenz Hiltner, a pioneer in rhizosphere microbial ecology and soil bacteriology research

  • Anton Hartmann
  • Michael Rothballer
  • Michael Schmid
Regular Article

Abstract

Lorenz Hiltner is recognized as the first scientist to coin the term “rhizosphere” in 1904. His scientific career and achievements are summarized in this essay. Most of his research he performed in the Bavarian Agriculture–Botanical Institute (later named the “Bavarian Institute of Plant Growth and Plant Protection”) in Munich, where he was the director from 1902 to 1923. Beginning with intensive and thorough investigations on the germination and growth of different crop plants (legumes and non-legumes) Hiltner became convinced, that root exudates of different plants support the development of different bacterial communities. His definition of the “rhizosphere” in the year 1904 centered on the idea, that plant nutrition is considerably influenced by the microbial composition of the rhizosphere. Hiltner observed bacterial cells even inside the rhizodermis of healthy roots. In analogy with fungal root symbionts, Hiltner named the bacterial community that is closely associated with roots “bacteriorhiza.” In his rhizosphere concept, Hiltner also envisioned, that beneficial bacteria are not only attracted by the root exudates but that there are also “uninvited guests,” that adjust to the specific root exudates. Based on his observations he hypothesized that “the resistance of plants towards pathogenesis is dependent on the composition of the rhizosphere microflora.” He even had the idea, that the quality of plant products may be dependent on the composition of the root microflora. In addition to his scientific achievements, Hiltner was very dedicated to applied work. Together with F. Nobbe he had the first patent on Rhizobium inoculants (Nitragin). He continuously improved formulations and the effectivity of the Rhizobium preparations and he also initiated seed dressing with sublimate for plant protection of seedlings. Thus, Hiltner tightly linked breakthroughs in basic research to improved rhizosphere management practices. In addition, he wrote a pioneering monograph on plant protection for everybody’s practical use. His emphasis on understanding microbes in the context of their micro-habitat, the rhizosphere, made him a pioneer in microbial ecology. Even now, in the era of genome and postgenome analysis with our better understanding of plant nutrition and soil bacteriology, his ideas and contributions are as fresh as they were more than 100 years ago.

Keywords

Lorenz Hiltner Rhizosphere Soil microbiology Bacteria–plant interactions 

Notes

Acknowledgements

We kindly appreciate the help and advice of the staff of the Bayerische Staatsbibliothek, Munich, Prof Dr E. Fischbeck (Professor Emeritus at the Technical University Munich, Freising/Weihenstephan) for his helpful suggestions, and Dr J. Bauchhenns (Bavarian Institute of Agriculture, LfL, Freising/Weihenstephan) for his support with additional reading and pictures from the archives of the LfL.

References

  1. Boshart K (1952) Lorenz Hiltner. Z Pflanzenb Psflanzenschutz 5:1–40 (Special issue)Google Scholar
  2. Hiltner L (1885) Über die Entwicklung des Nervus opticus von Mammalia. Biol Zentbl 5(2):38–40Google Scholar
  3. Hiltner L (1894) Über die Bedeutung der Wurzelknöllchen von Alnus glutinosa für die Stickstoffernährung dieser Pflanze. Landwirtsch Vers-Stn 46:153–161Google Scholar
  4. Hiltner L (1902) Die Keimungsverhälhnisse der Leguminosensamen und ihre Beeinflussung durch Organismenwirkung. Arb Biol Reichsanst Land – Forstwirtsch Berl–Dahlem 3:1–102Google Scholar
  5. Hiltner L (1903) Beiträge zur Mykorrhizafrage: über die biologische und physiologische Bedeutung der endotrophen Mykorrhiza. Nat Wiss Z Niederbayern 1:1–17Google Scholar
  6. Hiltner L (1904) Über neuere Erfahrungen und Probleme auf dem Gebiete der Bodenbakteriologie unter besonderer Berücksichtigung der Gründüngung und Brache. Arb DLG 98:59–78Google Scholar
  7. Hiltner L (1909) Pflanzenschutz, nach Monaten geordnet. Eine Anleitung für Landwirte, Gärtner, Obstbaumzüchter etc. Eugen Ulmer, Stuttgart (433 pages with 138 figures)Google Scholar
  8. Hiltner L (1915) Vermehrte Futtergewinnung aus der heimischen Pflanzenwelt. Eugen Ulmer, Stuttgart (164 pages)Google Scholar
  9. Hiltner L, Störmer K (1903) Studien über die Bakterienflora des Ackerbodens, mit besonderer Berücksichtigung ihres Verhaltens nach einer Behandlung mit Schwefelkohlenstoff und nach Brache. Arb Biol Reichsanst Land – Forstwirtsch Berl–Dahlem 3:443–545Google Scholar
  10. Löhnis F (1910) Handbuch der landwirtschaftlichen Bakteriologie. Gebr. Borntraeger, Berlin (907 pages)Google Scholar
  11. Nobbe F, Hiltner L (1893) Impfet den Boden!. Sächsische Landwirtschaftliche Zeitschrift 16:1–5Google Scholar
  12. Nobbe F, Schmid E, Hiltner L, Hotter E (1891) Versuche über die Stickstoff – assimilation von Leguminosen. Landwirtsch Vers-Stn 39:327–359Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Anton Hartmann
    • 1
  • Michael Rothballer
    • 1
  • Michael Schmid
    • 1
  1. 1.Department Microbe–Plant Interactions, Helmholtz Center MunichGerman Research Center for Environmental Health (GmbH)NurembergGermany

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