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Why do genotypes of Picea glauca differ in their growth response to elevated CO2?
Zhang, Junyan1,2; Mycroft, Erin E.1; Adams, Greg3; Reekie, Ed1
Corresponding AuthorReekie, E
2011
Source PublicationTREE PHYSIOLOGY
ISSN0829-318X
Volume31Issue:1Pages:16-21
SubtypeArticle
AbstractMeta-analyses reveal that fast-growing species have a greater growth response to elevated CO2 than slow-growing species. It is unknown whether this is a direct response or whether inter-specific differences in growth are simply correlated with other physiological or morphological differences among species that affect the growth response to CO2. Here we use intra-specific variation in Picea glauca to examine the mechanistic basis for this relationship. Relative growth rate (RGR) of 29 genotypes grown at ambient (370 mu l l(-1)) or elevated (740 mu l l(-1)) CO2 was measured. Physiological and morphological traits describing differences in allocation, canopy structure, stomatal function and photosynthesis were determined. Most variation in RGR (74%) was explained by traits associated with canopy structure. Although there was a strong correlation between RGR(740) and RGR(370), we found no evidence that genotypes that grew fast at ambient CO2 had a greater relative growth response to CO2. Given that the pattern found at the intra-specific level differed from that reported at the inter-specific level, our results suggest that RGR per se does not affect the growth response to CO2. Rather, the CO2 growth response is determined by traits that may or may not be correlated with RGR.
KeywordAllocation Patterns Canopy Structure Carbon Isotope Ratio Genetic Variation Global Change Relative Growth Rate
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1093/treephys/tpq097
WOS Subject ExtendedForestry
Indexed BySCI
WOS KeywordATMOSPHERIC CO2 ; POPULUS-TREMULOIDES ; GENETIC-VARIATION ; PHOTOSYNTHESIS ; TRAITS
Language英语
Quartile1区
WOS SubjectForestry
WOS IDWOS:000288272100003
Funding OrganizationNatural Sciences and Engineering Research Council of Canada(36707-2002)
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5539
Collection山地表生过程与生态调控重点实验室
Affiliation1.Acadia Univ, Dept Biol, Wolfville, NS B4P 2R6, Canada
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.JD Irving Ltd, Sussex E, NB E4G 2V5, Canada
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhang, Junyan,Mycroft, Erin E.,Adams, Greg,et al. Why do genotypes of Picea glauca differ in their growth response to elevated CO2?[J]. TREE PHYSIOLOGY,2011,31(1):16-21.
APA Zhang, Junyan,Mycroft, Erin E.,Adams, Greg,&Reekie, Ed.(2011).Why do genotypes of Picea glauca differ in their growth response to elevated CO2?.TREE PHYSIOLOGY,31(1),16-21.
MLA Zhang, Junyan,et al."Why do genotypes of Picea glauca differ in their growth response to elevated CO2?".TREE PHYSIOLOGY 31.1(2011):16-21.
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