气候变化领域集成服务门户(CCPortal): Impact of high atmospheric CO2 concentrations on the seasonality of water-related processes; gas exchange; and carbohydrate metabolism in coffee trees under field conditions

CCPortal

DOI	10.1007/s10584-020-02741-2
	Impact of high atmospheric CO2 concentrations on the seasonality of water-related processes; gas exchange; and carbohydrate metabolism in coffee trees under field conditions
	Sanches R.F.E.; da Cruz Centeno D.; Braga M.R.; da Silva E.A.
发表日期	2020
ISSN	0165-0009
起始页码	1231
结束页码	1248
卷号	162 期号:3
英文摘要	Increasing atmospheric CO2 concentrations ([CO2]) are unequivocal, widespread, and responsible for increased mean global temperatures and altered precipitation patterns. In this context, among the topics that need to be better understood are the changes in the water-related processes and gas exchange properties of plants grown under these conditions. Notably, the effects of climate change on coffee (Coffea spp.) production are particularly concerning given the importance of this commodity. Especially, it has been reported that coffee trees exhibit better photosynthetic efficiency when grown at higher [CO2] levels. In order to elucidate the mechanisms involved with this response, the seasonality of water-related processes, gas exchange, and carbohydrate metabolism were investigated using C. arabica var. Red Catuaí grown at ambient and high [CO2] under field conditions, at a free-air CO2 enrichment (FACE) facility for coffee, in Brazil. The trees were evaluated fortnightly, from November to February (hot and rainy—summer) and from June to September (cold and dry—winter). It was found that C. arabica trees grown under high [CO2] conditions exhibited increased photosynthetic rates (averaging 121% higher in summer and 45% higher in winter) in both seasons, without displaying any significant changes in the seasonal photosynthesis pattern. Additionally, there was a tendency for the coffee trees grown at high [CO2] to exhibit increased levels of soluble carbohydrates, organic acids, and amino acids in the leaves. Our findings suggest that coffee trees adapt to increased [CO2] through increased photosynthetic rates, enhanced stomatal conductance regulation, and augmented carbohydrate and organic acid synthesis. It is plausible that these features could help mitigate the effects caused by climate change. © 2020, Springer Nature B.V.
英文关键词	Carbohydrates; Climatic change; Coffee; Natural compounds; Organic acids; Photosynthesis
语种	英语
scopus关键词	Carbohydrates; Carbon dioxide; Coffee; Forestry; Metabolism; Organic acids; Plants (botany); Carbohydrate metabolism; CO2 concentration; Global temperatures; Photosynthetic efficiency; Photosynthetic rate; Precipitation patterns; Soluble carbohydrates; Stomatal conductance; Climate change; air temperature; amino acid; atmospheric gas; beverage; carbohydrate; carbon dioxide; climate change; climate effect; coffee; concentration (composition); gas exchange; organic acid; photosynthesis; precipitation (climatology); stomatal conductance; Brazil; Coffea; Coffea arabica
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147043
作者单位	Núcleo de Pesquisa em Fisiologia e Bioquímica, Instituto de Botânica, São Paulo, SP 04045-972, Brazil; Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, 09606-070, Brazil
推荐引用方式 GB/T 7714	Sanches R.F.E.,da Cruz Centeno D.,Braga M.R.,et al. Impact of high atmospheric CO2 concentrations on the seasonality of water-related processes; gas exchange; and carbohydrate metabolism in coffee trees under field conditions[J],2020,162(3).
APA	Sanches R.F.E.,da Cruz Centeno D.,Braga M.R.,&da Silva E.A..(2020).Impact of high atmospheric CO2 concentrations on the seasonality of water-related processes; gas exchange; and carbohydrate metabolism in coffee trees under field conditions.Climatic Change,162(3).
MLA	Sanches R.F.E.,et al."Impact of high atmospheric CO2 concentrations on the seasonality of water-related processes; gas exchange; and carbohydrate metabolism in coffee trees under field conditions".Climatic Change 162.3(2020).