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Nitrogen oxides as environmental sensors for seeds

Published online by Cambridge University Press:  22 February 2007

Zlatko Giba ,
Dragoljub Grubišić  and
Radomir Konjević
Zlatko Giba
Affiliation:
Institute of Botany, Faculty of Biology, University of Belgrade, Yugoslavia
Dragoljub Grubišić
Affiliation:
Institute for Biological Research ‘Siniša Stankovic’, 29 novembra 142, Belgrade 11060, Yugoslavia
Radomir Konjević*
Affiliation:
Institute of Botany, Faculty of Biology, University of Belgrade, Yugoslavia
*
*Correspondence: Fax: +381 11769903 Email: [email protected]
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Abstract

Nitrates have long been known to promote seed germination in many species, and various proposals have been made regarding the role of nitrates in this process. One hypothesis suggests a possible ecological role for nitrate, providing the seeds with a report of soil nitrogen status and the proximity of already established plants. However, nitrogen oxides (NO, NO2), which are present in the soil, also may be information carriers that indicate not only soil nitrate content, but also microbial activity and, therefore, soil quality. Because of annual variation of soil trace gas fluxes, seeds could be provided with information on seasonal and climate changes in their surroundings. Thus, nitrogen oxides would be the outer information carriers providing the seeds with integral data about many important factors required for successful germination and seedling establishment.

Keywords

seed ecologynitrogen oxidesgerminationsmokesoil trace gases
Type
Research Article
Information
Seed Science Research , Volume 13 , Issue 3 , September 2003 , pp. 187 - 196
Copyright
Copyright © Cambridge University Press 2003

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