NDLI: Hypoxic induction of alcohol and lactate dehydrogenases in lupine seedlings

Content Provider	Springer Nature Link
Author	Garnczarska, Małgorzata
Copyright Year	2002
Abstract	Seedlings of lupine (Lupinus luteus L. cv. Juno) were exposed for up to 96 hours to 1 to 2 kPa partial pressure oxygen (hypoxic treatment) and activities of alcohol dehydrogenase (ADH), lactate dehydrogenase (LDH) and their isoform profiles were determined. Roots of lupine seedlings were grown in a nitrogen flushed nutrient solution while their shoots were in air. Prolonged hypoxia led to a reduction of root elongation. This was accompanied by reduced increase in dry weight suggesting that insufficient carbohydrate supply was the cause of retarded growth of lupine roots. Hypoxically treated roots showed induction of ADH and LDH acivities. The maximum increase in LDH activity was low (2-fold) in contrast to ADH activity, which increased up to 7-fold. Hypoxic treatment of roots did not affect the activities of ADH and LDH in hypocotyls and cotyledons. Analysis of ADH and LDH activity gels indicated in roots 1 and 2 isoforms, respectively. The level of isozymes of both enzymes increased in roots upon exposure to hypoxic stress. Differences in isoenzymatic spectrum of ADH and LDH between roots, hypocotyls and cotyledons indicate organ specificity of isozymes of both enzymes. The importance of alcohol and lactate fermentation in roots to cope with hypoxic stress is discussed.
Starting Page	265
Ending Page	272
Page Count	8
File Format	PDF
ISSN	01375881
Journal	Acta Physiologiae Plantarum
Volume Number	24
Issue Number	3
e-ISSN	18611664
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	alcohol dehydrogenase fermentation hypoxia lactate dehydrogenase lupine Plant Physiology Plant Genetics & Genomics Plant Biochemistry Plant Pathology Plant Anatomy/Development Agriculture
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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