Degradation of chlorophyll and synthesis of flavonols during autumn senescence—the story told by individual leaves

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F18%3A00490883" target="_blank" >RIV/86652079:_____/18:00490883 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1093/aobpla/ply028" target="_blank" >http://dx.doi.org/10.1093/aobpla/ply028</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/aobpla/ply028" target="_blank" >10.1093/aobpla/ply028</a>

Result language

angličtina

Original language name

Degradation of chlorophyll and synthesis of flavonols during autumn senescence—the story told by individual leaves

Original language description

Autumn senescence of deciduous trees is characterized by chlorophyll degradation and flavonoid synthesis. In the present study, chlorophyll and flavonol contents were measured every morning and evening during the whole autumn with a non-destructive method from individual leaves of Sorbus aucuparia, Acer platanoides, Betula pendula and Prunus padus. In most of the studied trees, the chlorophyll content of each individual leaf remained constant until a phase of rapid degradation commenced. The fast phase lasted only ~1 week and ended with abscission. In S. aucuparia, contrary to the other species, the chlorophyll content of leaflets slowly but steadily decreased during the whole autumn, but rapid chlorophyll degradation commenced only prior to leaflet abscission also in this species. An increase in flavonols commonly accompanied the rapid degradation of chlorophyll. The results may suggest that each individual tree leaf retains its photosynthetic activity, reflected by a high chlorophyll content, until a rapid phase of chlorophyll degradation and flavonoid synthesis begins. Therefore, in studies of autumn senescence, leaves whose chlorophyll content is decreasing and leaves with summertime chlorophyll content (i.e. the leaves that have not yet started to degrade chlorophyll) should be treated separately.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10601 - Cell biology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

AoB PLANTS

ISSN

2041-2851

e-ISSN

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Volume of the periodical

10

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

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UT code for WoS article

000438781900007

EID of the result in the Scopus database

2-s2.0-85055542117