Abstract
The possible involvement of nitric oxide in response of Solanum nigrum seedlings to Fe deficiency was investigated. Iron deficiency resulted in decreased shoot height and chlorophyll content and increased proliferation of root hairs and H2O2, K+ and Ca2+ content. NO donor S-nitrosoglutathione (GSNO) was effective in preventing Fe deficiency-induced increase in content of H2O2 and the ion uptake. The protective effects of GSNO were reversed by cPTIO, an NO scavenger, and tungstate, a nitrate reductase (NR) inhibitor.
Abbreviations
- cPTIO:
-
2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide
- DAB:
-
3-diaminobenzidine
- DAF-2 DA:
-
4,5-diaminofluorescein diacetate
- GSNO:
-
S-nitrosoglutathione
- L-NAME:
-
NG-nitro-L-Arg-methyl ester
- NR:
-
nitrate reductase
- NOS:
-
nitric oxide synthase
- ROS:
-
reactive oxygen species
- TCA:
-
trichloroacetic acid
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Acknowledgements: We thank Dr. Dezhu Li of Kunming Institute of Botany, Chinese Academy of Sciences for providing the S. nigrum seeds. The authors truly appreciate the time that Dr. Jana Pospíšilová and the anonymous reviewers spent on helping to clarify the confusions and modify the paper. The research was supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant no. 0707013603)) and the National Major Special Project on New Varieties Cultivation for Transgenic Organisms (Grant no. 2009ZX08009-130B).
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Xu, J., Yin, H.X., Liu, X.J. et al. Nitric oxide alleviates Fe deficiency-induced stress in Solanum nigrum . Biol Plant 53, 784–788 (2009). https://doi.org/10.1007/s10535-009-0144-6
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DOI: https://doi.org/10.1007/s10535-009-0144-6