Back to Search
Start Over
METABOLITE PROFILING OF SHOOT EXTRACTS, ROOT EXTRACTS, AND ROOT EXUDATES OF RICE PLANT UNDER PHOSPHORUS DEFICIENCY
- Source :
- Journal of Plant Nutrition. 36:1138-1159
- Publication Year :
- 2013
- Publisher :
- Informa UK Limited, 2013.
-
Abstract
- We applied a metabolite profiling technique to investigate root exudates under phosphorus (P) deficiency. Oryza sativa was grown in culture solution containing three P levels (0, 1, and 8 mg P L−1). Shoot extracts, root extracts, and root exudates were obtained from 18 and 23-day-old plants and their metabolites were determined by capillary electrophoresis/time-of-flight mass spectrometry. Eighty, 90, and 65 metabolites were identified in shoot extracts, root extracts, and root exudates, respectively. Sixty-three to eighty-four percent of the metabolites were exuded to the rhizosphere. More than 33% of the metabolites in the root exudates showed higher concentration at low P than at high P. On the other hand, only 14% of the metabolites in the root extracts showed lower concentration at low P than at high P. These results suggest that rice roots actively release many metabolites in response to P deficiency.
Details
- ISSN :
- 15324087 and 01904167
- Volume :
- 36
- Database :
- OpenAIRE
- Journal :
- Journal of Plant Nutrition
- Accession number :
- edsair.doi...........21c12aa194078387b5bc15ace46ed106