Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14330 |
Photosynthetic capacity and leaf nitrogen decline along a controlled climate gradient in provenances of two widely distributed Eucalyptus species | |
Crous, Kristine Y.1; Drake, John E.1,2; Aspinwall, Michael J.1,3; Sharwood, Robert E.1,4; Tjoelker, Mark G.1; Ghannoum, Oula1 | |
2018-10-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:10页码:4626-4644 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; USA |
英文摘要 | Climate is an important factor limiting tree distributions and adaptation to different thermal environments may influence how tree populations respond to climate warming. Given the current rate of warming, it has been hypothesized that tree populations in warmer, more thermally stable climates may have limited capacity to respond physiologically to warming compared to populations from cooler, more seasonal climates. We determined in a controlled environment how several provenances of widely distributed Eucalyptus tereticornis and E.grandis adjusted their photosynthetic capacity to +3.5 degrees C warming along their native distribution range (similar to 16-38 degrees S) and whether climate of seed origin of the provenances influenced their response to different growth temperatures. We also tested how temperature optima (T-opt) of photosynthesis and J(max) responded to higher growth temperatures. Our results showed increased photosynthesis rates at a standardized temperature with warming in temperate provenances, while rates in tropical provenances were reduced by about 40% compared to their temperate counterparts. Temperature optima of photosynthesis increased as provenances were exposed to warmer growth temperatures. Both species had similar to 30% reduced photosynthetic capacity in tropical and subtropical provenances related to reduced leaf nitrogen and leaf Rubisco content compared to temperate provenances. Tropical provenances operated closer to their thermal optimum and came within 3% of the T-opt of J(max) during the daily temperature maxima. Hence, further warming may negatively affect C uptake and tree growth in warmer climates, whereas eucalypts in cooler climates may benefit from moderate warming. |
英文关键词 | growth temperature Jmax leaf respiration optimum temperature photosynthesis R/A ratio thermal acclimation V-cmax warming |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445728800014 |
WOS关键词 | TEMPERATURE RESPONSE FUNCTIONS ; BIOCHEMICALLY BASED MODEL ; SIEB EX SPRENG ; THERMAL-ACCLIMATION ; PLANT RESPIRATION ; ATMOSPHERIC CO2 ; LONG-TERM ; ALTITUDINAL VARIATION ; CARBON ASSIMILATION ; RUBP CARBOXYLATION |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17760 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Western Sydney Univ, Hawkesbury Inst Environm, Locked Bag 1797, Penrith, NSW 2751, Australia; 2.SUNY Coll Environm Sci & Forestry, Dept Forest & Nat Resources Management, Syracuse, NY 13210 USA; 3.Univ North Florida, Dept Biol, Jacksonville, FL USA; 4.Australian Natl Univ, Res Sch Biol, Div Plant Sci, Canberra, ACT, Australia |
推荐引用方式 GB/T 7714 | Crous, Kristine Y.,Drake, John E.,Aspinwall, Michael J.,et al. Photosynthetic capacity and leaf nitrogen decline along a controlled climate gradient in provenances of two widely distributed Eucalyptus species[J]. GLOBAL CHANGE BIOLOGY,2018,24(10):4626-4644. |
APA | Crous, Kristine Y.,Drake, John E.,Aspinwall, Michael J.,Sharwood, Robert E.,Tjoelker, Mark G.,&Ghannoum, Oula.(2018).Photosynthetic capacity and leaf nitrogen decline along a controlled climate gradient in provenances of two widely distributed Eucalyptus species.GLOBAL CHANGE BIOLOGY,24(10),4626-4644. |
MLA | Crous, Kristine Y.,et al."Photosynthetic capacity and leaf nitrogen decline along a controlled climate gradient in provenances of two widely distributed Eucalyptus species".GLOBAL CHANGE BIOLOGY 24.10(2018):4626-4644. |
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