Skip Navigation

This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (3)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by MANSOUR, A.
Right arrow Articles by de FAY, E.
Right arrow Search for Related Content
PubMed
Right arrow Articles by MANSOUR, A.
Right arrow Articles by de FAY, E.
Agricola
Right arrow Articles by MANSOUR, A.
Right arrow Articles by de FAY, E.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Annals of Botany 82: 89-96, 1998
© 1998 Annals of Botany Company

Rhythmic Growth Rings of Wood and Their Relationship with the Foliage in Oak Seedlings Grown in a Favourable Environment

ANAS MANSOUR and ELISABETH de FAY+,

Université Henri Poincaré, Nancy I, Laboratoire de Biologie Forestière, Associé INRA, BP 239, 54506, Vandoeuvre-lès-Nancy, Cedex, France

December 5, 1997 ; January 20, 1998 . April 3, 1998 .

The anatomy of wood was studied inQuercus roburL. andQuercus suberL. seedlings exhibiting 3–8 units of extension, each with a tier of photosynthesizing leaves in their upper parts, generated as the result of rhythmic shoot growth under favourable conditions. At all the axis levels examined (i.e. the base of each of the different units of extension, four other equidistant levels within the first unit of extension and the upper part of the taproot), the wood displayed rings when treated with Wiesner reagents. This indicated cinnamaldehyde groups present in lignins. No rings appeared when the Maüle reaction was used for specific detection of syringyl subunits in lignins. A trend towards a periodical arrangement of xylem parenchyma bands was also found when sections were treated with I2/KI. The number of rings coincided with the number of leaf tiers above the level of measurement, and did not vary inside the first unit of extension. Thus, the rings are called rhythmic growth rings. In sections of the first and the second units of extension, and in the taproot, the area and width of a given rhythmic growth ring were highly correlated with the total area of leaves present above the level of measurement at the presumed time of growth ring formation. Moreover, stem diameter at the base of the units of extension was highly correlated with the leaf area above. These results indicate that differentiation of xylem, particularly its lignification, varies rhythmically in oak seedlings. They imply that wood production is linked to the photosynthesizing and/or transpiring area of the plant. Thus, during a growth cycle ofQ. roburandQ. suberseedlings, there appears to be integration of the primary metabolic activities with the laying down of rhythmic growth rings.Copyright 1998 Annals of Botany Company

Allometric relationship, juvenile wood, leaf area, lignification, oak seedling, periodic structure,Quercus roburL.,Quercus suberL., rhythmic growth ring, unit of extension.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 ANN BOT (LOND)Home page
T. ALMERAS, E. COSTES, and J.-C. SALLES
Identification of Biomechanical Factors Involved in Stem Shape Variability between Apricot Tree Varieties
Ann. Bot., April 1, 2004; 93(4): 455 - 468.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.