What is it about?
The inhibiting effect of lignans on Lactuva growth depends on a decrease of G6PDH (-80%) and GOGAT (-65%) activities and a strong increase of soluble sugars (up to + 100%) and glutamine (+70%). Lettuce is a C3 plant, in which photorespiration occurs, the inhibition of GS and GOGAT activities, enzymes also involved in the reassimilation of ammonia released during photorespiration, could lead to an accumulation of ammonia and a subsequent leaf damage.
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Why is it important?
Before this case, herbicidal effects had never been correlated to GOGAT activity and ammonia reassimilation.
Perspectives
This paper is interesting to read because it has been written with a double point of view: chemists vs. plant physiologists.
Professor Petronia Carillo
Seconda Universita degli Studi di Napoli
Read the Original
This page is a summary of: Effects of the Allelochemicals Dihydrodiconiferyl Alcohol and Lariciresinol on Metabolism of Lactuca sativa, The Open Bioactive Compounds Journal, August 2010, Bentham Science Publishers,
DOI: 10.2174/1874847301003010018.
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