دورية أكاديمية
Physiological consequences of height-related morphological variation in Sequoia sempervirens foliage.
| العنوان: | Physiological consequences of height-related morphological variation in Sequoia sempervirens foliage. |
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| المؤلفون: | Mullin LP; Biological Sciences and Merriam-Powell Center for Environmental Research, Northern Arizona University, Flagstaff, AZ 86011, USA. lucy.mullin@nau.edu, Sillett SC, Koch GW, Tu KP, Antoine ME |
| المصدر: | Tree physiology [Tree Physiol] 2009 Aug; Vol. 29 (8), pp. 999-1010. Date of Electronic Publication: 2009 May 29. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: Oxford University Press Country of Publication: Canada NLM ID: 100955338 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0829-318X (Print) 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: | Plant Leaves/*anatomy & histology , Plant Leaves/*physiology , Sequoia/*anatomy & histology , Sequoia/*physiology, Carbon Dioxide/metabolism ; Cell Respiration/radiation effects ; Extracellular Space/metabolism ; Extracellular Space/radiation effects ; Light ; Mitochondria/metabolism ; Mitochondria/radiation effects ; Photosynthesis/physiology ; Photosynthesis/radiation effects ; Plant Leaves/radiation effects ; Plant Shoots/anatomy & histology ; Plant Shoots/radiation effects |
| مستخلص: | This study examined relationships between foliar morphology and gas exchange characteristics as they vary with height within and among crowns of Sequoia sempervirens D. Don trees ranging from 29 to 113 m in height. Shoot mass:area (SMA) ratio increased with height and was less responsive to changes in light availability as height increased, suggesting a transition from light to water relations as the primary determinant of morphology with increasing height. Mass-based rates of maximum photosynthesis (A(max,m)), standardized photosynthesis (A(std,m)) and internal CO(2) conductance (g(i,m)) decreased with height and SMA, while the light compensation point, light saturation point, and mass and area-based rates of dark respiration (R(m)) increased with height and SMA. Among foliage from different heights, much of the variation in standardized photosynthesis was explained by variation in g(i,) consistent with increasing limitation of photosynthesis by internal conductance in foliage with higher SMA. The syndrome of lower internal and stomatal conductance to CO(2) and higher respiration may contribute to reductions in upper crown growth efficiency with increasing height in S. sempervirens trees. |
| المشرفين على المادة: | 142M471B3J (Carbon Dioxide) |
| تواريخ الأحداث: | Date Created: 20090602 Date Completed: 20091007 Latest Revision: 20131121 |
| رمز التحديث: | 20231215 |
| DOI: | 10.1093/treephys/tpp037 |
| PMID: | 19483187 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 0829-318X |
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| DOI: | 10.1093/treephys/tpp037 |