Effects of plant hormones on the activity of alcohol dehydrogenase in lettuce seedlings

Noguchi, H Kato

doi:10.1016/s0176-1617(00)80194-7

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…IAA participates in metabolic regulation during oxygen deficiency. Treatment with IAA increases ADH activity in lettuce [74], protein synthesis and accumulation of solutes in rice coleoptiles [75]. Auxin affects hyponastic response [33] and stimulates adventitious rooting [23].…”

Section: Discussionmentioning

confidence: 99%

Indoleacetic Acid Levels in Wheat and Rice Seedlings under Oxygen Deficiency and Subsequent Reoxygenation

et al. 2020

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The lack of oxygen and post-anoxic reactions cause significant alterations of plant growth and metabolism. Plant hormones are active participants in these alterations. This study focuses on auxin–a phytohormone with a wide spectrum of effects on plant growth and stress tolerance. The indoleacetic acid (IAA) content in plants was measured by ELISA. The obtained data revealed anoxia-induced accumulation of IAA in wheat and rice seedlings related to their tolerance of oxygen deprivation. The highest IAA accumulation was detected in rice roots. Subsequent reoxygenation was accompanied with a fast auxin reduction to the control level. A major difference was reported for shoots: wheat seedlings contained less than one-third of normoxic level of auxin during post-anoxia, while IAA level in rice seedlings rapidly recovered to normoxic level. It is likely that the mechanisms of auxin dynamics resulted from oxygen-induced shift in auxin degradation and transport. Exogenous IAA treatment enhanced plant survival under anoxia by decreased electrolyte leakage, production of hydrogen peroxide and lipid peroxidation. The positive effect of external IAA application coincided with improvement of tolerance to oxygen deprivation in the 35S:iaaM × 35S:iaaH lines of transgene tobacco due to its IAA overproduction.

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Section: Discussionmentioning

confidence: 99%