Arid
DOI10.1111/nph.14737
Stem photosynthesis and hydraulics are coordinated in desert plant species
Avila-Lovera, Eleinis1,2; Zerpa, Antonio J.1; Santiago, Louis S.1,3
通讯作者Avila-Lovera, Eleinis
来源期刊NEW PHYTOLOGIST
ISSN0028-646X
EISSN1469-8137
出版年2017
卷号216期号:4页码:1119-1129
英文摘要

Coordination between stem photosynthesis and hydraulics in green-stemmed desert plants is important for understanding the physiology of stem photosynthesis and possible drought responses. Plants with photosynthetic stems have extra carbon gain that can help cope with the detrimental effects of drought.


We studied photosynthetic, hydraulic and functional traits of 11 plant species with photosynthetic stems from three California desert locations. We compared relationships among traits between wet and dry seasons to test the effect of seasonality on these relationships. Finally, we compared stem trait relationships with analogous relationships in the leaf economics spectrum.


We found that photosynthetic and hydraulic traits are coordinated in photosynthetic stems. The slope or intercept of all trait relationships was mediated by seasonality. The relationship between mass-based stem photosynthetic CO2 assimilation rate (A(mass)) and specific stem area (SSA; stem surface area to dry mass ratio) was statistically indistinguishable from the leaf economics spectrum.


Our results indicate that photosynthetic stems behave like leaves in the coordination of multiple traits related to carbon gain, water movement and water loss. Because of the similarity of the stem A(mass)-SSA relationship to the leaf A(mass)-specific leaf area relationship, we suggest the existence of a photosynthetic stem economic spectrum.


英文关键词chlorophyll fluorescence cuticular conductance evaporative flux method gas exchange hydraulic conductance specific bark area specific stem area wood density
类型Article
语种英语
国家USA ; Panama
收录类别SCI-E
WOS记录号WOS:000414639800018
WOS关键词WATER PERMEABILITY ; GAS-EXCHANGE ; CO2 FIXATION ; STOMATAL CONDUCTANCE ; ERIOGONUM-INFLATUM ; SEASONAL PATTERNS ; WOOD DENSITY ; CARBON GAIN ; LEAF ; FOREST
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201255
作者单位1.Univ Calif Riverside, Dept Bot & Plant Sci, 2150 Batchelor Hall, Riverside, CA 92521 USA;
2.Univ Calif Riverside, Dept Biol, Evolut Ecol & Organismal Biol Grad Program, Riverside, CA 92521 USA;
3.Smithsonian Trop Res Inst, Apartado 0843-03092, Balboa, Ancon, Panama
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GB/T 7714
Avila-Lovera, Eleinis,Zerpa, Antonio J.,Santiago, Louis S.. Stem photosynthesis and hydraulics are coordinated in desert plant species[J],2017,216(4):1119-1129.
APA Avila-Lovera, Eleinis,Zerpa, Antonio J.,&Santiago, Louis S..(2017).Stem photosynthesis and hydraulics are coordinated in desert plant species.NEW PHYTOLOGIST,216(4),1119-1129.
MLA Avila-Lovera, Eleinis,et al."Stem photosynthesis and hydraulics are coordinated in desert plant species".NEW PHYTOLOGIST 216.4(2017):1119-1129.
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