Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13566 |
Strong thermal acclimation of photosynthesis in tropical and temperate wet-forest tree species: the importance of altered Rubisco content | |
Scafaro, Andrew P.1; Xiang, Shuang2,3; Long, Benedict M.3,4; Bahar, Nur H. A.1; Weerasinghe, Lasantha K.5; Creek, Danielle6; Evans, John R.3,4; Reich, Peter B.6,7; Atkin, Owen K.1 | |
2017-07-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; Peoples R China; Sri Lanka; USA |
英文摘要 | Understanding of the extent of acclimation of light-saturated net photosynthesis (A(n)) to temperature (T), and associated underlying mechanisms, remains limited. This is a key knowledge gap given the importance of thermal acclimation for plant functioning, both under current and future higher temperatures, limiting the accuracy and realism of Earth system model (ESM) predictions. Given this, we analysed and modelled T-dependent changes in photosynthetic capacity in 10 wet-forest tree species: six from temperate forests and four from tropical forests. Temperate and tropical species were each acclimated to three daytime growth temperatures (T-growth): temperate -15, 20 and 25 degrees C; tropical -25, 30 and 35 degrees C. CO2 response curves of An were used to model maximal rates of RuBP (ribulose-1,5-bisphosphate) carboxylation (V-cmax) and electron transport (J(max)) at each treatment's respective T-growth and at a common measurement T (25 degrees C). SDS-PAGE gels were used to determine abundance of the CO2-fixing enzyme, Rubisco. Leaf chlorophyll, nitrogen (N) and mass per unit leaf area (LMA) were also determined. For all species and T-growth, An at current atmospheric CO2 partial pressure was Rubisco-limited. Across all species, LMA decreased with increasing T-growth. Similarly, area-based rates of Vcmax at a measurement T of 25 degrees C (V-cmax(25)) linearly declined with increasing T-growth, linked to a concomitant decline in total leaf protein per unit leaf area and Rubisco as a percentage of leaf N. The decline in Rubisco constrained Vcmax and An for leaves developed at higher T-growth and resulted in poor predictions of photosynthesis by currently widely used models that do not account for T-growth-mediated changes in Rubisco abundance that underpin the thermal acclimation response of photosynthesis in wet-forest tree species. A new model is proposed that accounts for the effect of T-growth-mediated declines in V-cmax(25) on An, complementing current photosynthetic thermal acclimation models that do not account for T sensitivity of V-cmax(25). |
英文关键词 | climate modelling earth system models photosynthesis photosynthesis modelling Rubisco content temperature thermal acclimation tropical trees V-cmax |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402514900021 |
WOS关键词 | BIOCHEMICALLY BASED MODEL ; CO2 ENRICHMENT FACE ; LEAF RESPIRATION ; CARBON-DIOXIDE ; GROWTH TEMPERATURE ; PHENOTYPIC PLASTICITY ; MESOPHYLL CONDUCTANCE ; ACTIVATION STATE ; HEAT TOLERANCE ; SPINACH LEAVES |
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/17616 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Australian Natl Univ, ARC Ctr Excellence Plant Energy Biol, Res Sch Biol, Bldg 134, Canberra, ACT 2601, Australia; 2.Chinese Acad Sci, Chengdu Inst Biol, 9 Sect 4,Renmin South Rd, Chengdu 610041, Sichuan, Peoples R China; 3.Australian Natl Univ, Res Sch Biol, Div Plant Sci, Bldg 46, Canberra, ACT 2601, Australia; 4.Australian Natl Univ, ARC Ctr Excellence Translat Photosynthesis, Res Sch Biol, Bldg 134, Canberra, ACT 2601, Australia; 5.Univ Peradeniya, Fac Agr, Peradeniya 20400, Sri Lanka; 6.Western Sydney Univ, Hawkesbury Inst Environm, Penrith, NSW 2751, Australia; 7.Univ Minnesota, Dept Forest Resources, 1540 Cleveland Ave North, St Paul, MN 55108 USA |
推荐引用方式 GB/T 7714 | Scafaro, Andrew P.,Xiang, Shuang,Long, Benedict M.,et al. Strong thermal acclimation of photosynthesis in tropical and temperate wet-forest tree species: the importance of altered Rubisco content[J]. GLOBAL CHANGE BIOLOGY,2017,23(7). |
APA | Scafaro, Andrew P..,Xiang, Shuang.,Long, Benedict M..,Bahar, Nur H. A..,Weerasinghe, Lasantha K..,...&Atkin, Owen K..(2017).Strong thermal acclimation of photosynthesis in tropical and temperate wet-forest tree species: the importance of altered Rubisco content.GLOBAL CHANGE BIOLOGY,23(7). |
MLA | Scafaro, Andrew P.,et al."Strong thermal acclimation of photosynthesis in tropical and temperate wet-forest tree species: the importance of altered Rubisco content".GLOBAL CHANGE BIOLOGY 23.7(2017). |
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