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Literature summary for 3.1.1.14 extracted from

  • Kraj, W.
    Chlorophyll degradation and the activity of chlorophyllase and Mg-dechelatase during leaf senescence in Fagus sylvatica (2015), Dendrobiology, 74, 43-57 .
No PubMed abstract available
Search for more literature for 3.1.1.14

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
chlorophyll + H2O Fagus sylvatica
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 phytol + chlorophyllide
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 ?

Organism

Organism UniProt Comment Textmining
Fagus sylvatica
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf senescent Fagus sylvatica
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additional information changes in chlorophyll a content in autumn leaves from different phenological forms of beech trees, overview Fagus sylvatica
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Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
chlorophyll + H2O
-
 Fagus sylvatica phytol + chlorophyllide
-
 ?
chlorophyll + H2O chlorophyll from spinach leaves Fagus sylvatica phytol + chlorophyllide
-
 ?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
37
-
 assay at Fagus sylvatica

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.8
-
 assay at Fagus sylvatica

General Information

General Information Comment Organism
physiological function induction and course of autumn leaf senescence in early, intermediate and late phenological forms of beech is analyzed from the contents of chlorophyll a and b, chlorophyll degradation products and the activities of chlorophyllase and Mg-dechelatase. Chlorophyll degradation in senescing leaves (obvious by leaf discoloration) of this form occurs in three stages, which strongly coincides with the dates of sudden temperature drops. These stages are less visible in the intermediate form, wherexadas chlorophyll degradation in the late form is the most stable and occurs in two stages. The fraction of chlorophyllides and phaeophytin in relation to chlorophylls in the early phenological form is significantly higher than that in the late form. Biochemical analyses indicate that pigment dephytylation associated with an increase in chlorophyllase activity is an early reaction of chlorophyll degradation, whereas the Mg-dexadchelating reaction is much less important. The activity of chlorophyllase depends significantly on the phenological form. All chlorophyll degradation parameters are highly corxadrelated with temperature changes during senescence. The early phenological form is characterised by the highest correlation coefficients Fagus sylvatica