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Metabolic adaptation to flooding stress in upland and lowland rice seedlings

Authors :
Ryosuke Sasaki
Chinatsu Ohashi
Hisashi Kato-Noguchi
Source :
Acta Physiologiae Plantarum. 25:257-261
Publication Year :
2003
Publisher :
Springer Science and Business Media LLC, 2003.

Abstract

Ability of metabolic adaptation in upland and lowland rice (Oryza sativa L.) seedlings to flooding stress was compared. Flooding stress increased alcohol dehydrogenase (ADH) activity and ethanol concentration in shoots and roots of the upland and lowland rice seedlings. The difference in ADH activity and ethanol concentration in shoots between the upland and lowland rice was not apparent. However, both ADH activity and ethanol concentration in roots of the lowland rice were 2-fold greater than those in roots of the upland rice, suggesting that flooding-induction of ethanolic fermentation in lowland rice roots may be significantly greater than that in the upland rice roots. Since flooding often causes the anaerobic conditions in rooting zone than aerial part of plants and ethanolic fermentation is essential to survive in the anaerobic conditions, the ability of metabolic adaptation in lowland rice seedlings to flooding stress may be greater than that in upland rice seedlings.

Details

ISSN :
18611664 and 01375881
Volume :
25
Database :
OpenAIRE
Journal :
Acta Physiologiae Plantarum
Accession number :
edsair.doi...........3b74678ebad7663cbcafc1cde77b7f49
Full Text :
https://doi.org/10.1007/s11738-003-0006-3