دورية أكاديمية
Estimation of phloem conductance at tree level in young, middle-aged and old-aged Scots pine trees growing in different climatic conditions in boreal forests.
| العنوان: | Estimation of phloem conductance at tree level in young, middle-aged and old-aged Scots pine trees growing in different climatic conditions in boreal forests. |
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| المؤلفون: | Tarelkina TV; Forest Research Institute of the Karelian Research Centre of the Russian Academy of Sciences, 11 Pushkinskaya st., 185910 Petrozavodsk, Russian Federation., Serkova AA; Forest Research Institute of the Karelian Research Centre of the Russian Academy of Sciences, 11 Pushkinskaya st., 185910 Petrozavodsk, Russian Federation., Galibina NA; Forest Research Institute of the Karelian Research Centre of the Russian Academy of Sciences, 11 Pushkinskaya st., 185910 Petrozavodsk, Russian Federation., Novichonok EV; Forest Research Institute of the Karelian Research Centre of the Russian Academy of Sciences, 11 Pushkinskaya st., 185910 Petrozavodsk, Russian Federation., Moshnikov SA; Forest Research Institute of the Karelian Research Centre of the Russian Academy of Sciences, 11 Pushkinskaya st., 185910 Petrozavodsk, Russian Federation., Ivanova DS; Forest Research Institute of the Karelian Research Centre of the Russian Academy of Sciences, 11 Pushkinskaya st., 185910 Petrozavodsk, Russian Federation., Semenova LI; Forest Research Institute of the Karelian Research Centre of the Russian Academy of Sciences, 11 Pushkinskaya st., 185910 Petrozavodsk, Russian Federation. |
| المصدر: | Tree physiology [Tree Physiol] 2024 Aug 03; Vol. 44 (8). |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Oxford University Press Country of Publication: Canada NLM ID: 100955338 Publication Model: Print Cited Medium: Internet ISSN: 1758-4469 (Electronic) Linking ISSN: 0829318X NLM ISO Abbreviation: Tree Physiol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Oxford : Oxford University Press Original Publication: Victoria, [B.C.] : Heron Pub., c1986- |
| مواضيع طبية MeSH: | Phloem*/physiology , Phloem*/anatomy & histology , Pinus sylvestris*/growth & development , Pinus sylvestris*/physiology , Pinus sylvestris*/anatomy & histology , Climate*, Trees/physiology ; Trees/growth & development ; Trees/anatomy & histology ; Forests ; Taiga |
| مستخلص: | In forests, a significant proportion of the carbon fixed by trees during photosynthesis is transported belowground along the conducting phloem, so variations in phloem anatomy can lead to variations in transport capacity. Phloem conductance at tree level (Ktree) is also affected by tree height. Both the phloem anatomy and the tree size change during ontogeny, and also differ under different environmental conditions. The goal of our work was to identify the main drivers of variation in Ktree in Scots pine trees growing in natural boreal forests. We conducted a phloem anatomical study and calculated Ktree in trees of three age groups growing in different climatic conditions along a latitudinal gradient from south to north. We found that Ktree was maintained at the same level in actively growing pine trees (25-80-years-old) but increased in old-aged trees (180-190-years-old), possibly reflecting the shift in source-sink relationships of aboveground and belowground parts of trees. Trees of the same age group growing in different climatic conditions demonstrated similar values of Ktree due to coordinated changes in the phloem anatomy and the tree height. In general, the negative influence of tree height on Ktree is offset by the positive influence of phloem width (or trunk diameter) and sieve cell diameter. The exception was young trees growing in the transition zone of the northern taiga subzone to the tundra, where Ktree was the highest in its age group and even exceeded Ktree of middle-aged trees. (© The Author(s) 2024. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.) |
| معلومات مُعتمدة: | 123030300031-6 Ministry of Science and Higher Education of the Russian Federation; 121061500082-2 Karelian Research Centre of the Russian Academy of Sciences |
| فهرسة مساهمة: | Keywords: Pinus sylvestris; boreal zone; forest types; phloem transport; phloem width |
| تواريخ الأحداث: | Date Created: 20240708 Date Completed: 20240809 Latest Revision: 20240811 |
| رمز التحديث: | 20240812 |
| DOI: | 10.1093/treephys/tpae081 |
| PMID: | 38976011 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1758-4469 |
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| DOI: | 10.1093/treephys/tpae081 |