Structural and functional changes in coffee trees after 4 years under free air CO2 enrichment

Rakocevic, Miroslava; Ribeiro, Rafael Vasconcelos; Marchiori, Paulo Eduardo Ribeiro; Filizola, H. F.; Batista, Eunice Reis

doi:10.1093/aob/mcy011

Cited by 39 publications

(21 citation statements)

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“…The compensation effects of e[CO 2 ] for low water availability was observed as leaf retention of the second-and thirdorder axes during the active and reduced seasonal growths. The mitigation effect of e[CO 2 ] under drought in the reduced growth season is observed in the leaf assimilation rate (Ghini et al, 2015;Rakocevic et al, 2018a). Our data could help to paint a more complete picture of possible morphophysiological responses in Arabica coffee under global climate changes.…”

Section: The Air [Co 2 ] and Water Availability Modify Leaf Growth Pamentioning

confidence: 78%

Variations in leaf growth parameters within the tree structure of adult Coffea arabica in relation to seasonal growth, water availability and air carbon dioxide concentration

Rakocevic

Matsunaga

2018

Annals of Botany

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Section: The Air [Co 2 ] and Water Availability Modify Leaf Growth Pamentioning

confidence: 78%

Variations in leaf growth parameters within the tree structure of adult Coffea arabica in relation to seasonal growth, water availability and air carbon dioxide concentration

Rakocevic

Matsunaga

2018

Annals of Botany

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“…The latter study also found that stomatal index increased in leaves which developed in an elevated CO 2 environment, a response contrary to trends among most C 3 species over the last century (Woodward 1987;Lammertsma et al 2011). Stomatal conductance in coffee appears to remain unchanged in response to elevated CO 2 (Ramalho et al 2013;Da Matta et al 2016), but the response varied depending on position within the canopy (Rakocevic et al 2018). Quantum efficiency was enhanced under elevated CO 2 with a concurrent decrease in light compensation point compared to plants grown under ambient CO 2 .…”

Section: Carbon Dioxidementioning

confidence: 86%

“…Photosynthesis in coffee does not appear to acclimate to elevated CO 2 in long-term growth studies; after 2-year growth at ca. 600 ppm, a 40% increase in photosynthetic rate was measured which was still apparent 2 years later (Ghini et al 2015;Rakocevic et al 2018). Nutrient uptake and nutrient use efficiency for several mineral nutrients including N were improved by growth at elevated CO 2 (Baligar et al 2005) while no such change in nutrient concentrations was seen in coffee plants grown at elevated CO 2 (Da Matta et al 2016), and in mango, the concentration of several minerals decreased in leaves grown at elevated CO 2 relative to ambient CO 2 (Schaffer et al 1997).…”

Section: Carbon Dioxidementioning

confidence: 94%

“…This effect was dependent on soil moisture conditions with a greater improvement seen in well-watered plants compared to stressed plants (Lahive et al 2018). In coffee, quantum efficiency, as well as instantaneous carboxylation efficiency, increased in response to elevated CO 2 but only in leaves in the upper canopy (Rakocevic et al 2018). Shade-tolerant species tend to have greater relative response to elevated CO 2 in terms of quantum efficiency and light utilisation than shade-intolerant species (Sefcik et al 2006;Ellsworth et al 2012), likely due to the greater responsiveness of stomata to lower light levels making more efficient use of available light (Woods and Turner 1971).…”

Section: Carbon Dioxidementioning

confidence: 95%

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The physiological responses of cacao to the environment and the implications for climate change resilience. A review

Lahive

Hadley

Daymond

2018

Agron. Sustain. Dev.

152

109

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Cacao (Theobroma cacao L.) is a tropical perennial crop which is of great economic importance to the confectionary industry and to the economies of many countries of the humid tropics where it is grown. Some recent studies have suggested that climate change could severely impact cacao production in West Africa. It is essential to incorporate our understanding of the physiology and genetic variation within cacao germplasm when discussing the implications of climate change on cacao productivity and developing strategies for climate resilience in cacao production. Here, we review the current research on the physiological responses of cacao to various climate factors. Our main findings are as follows: (1) water limitation causes significant yield reduction in cacao, but genotypic variation in sensitivity is evident; (2) in the field, cacao experiences higher temperatures than is often reported in the literature; (3) the complexity of the cacao/shade tree interaction can lead to contradictory results; (4) elevated CO 2 may alleviate some negative effects of climate change; (5) implementation of mitigation strategies can help reduce environmental stress; and (6) significant gaps in the research need addressing to accelerate the development of climate resilience. Harnessing the significant genetic variation apparent within cacao germplasm is essential to develop modern varieties capable of high yields in non-optimal conditions. Mitigation strategies will also be essential, but to use shading to best effect shade tree selection is crucial to avoid resource competition. Cacao is often described as being sensitive to climate change, but genetic variation, adaptive responses, appropriate mitigation strategies and interactive climate effects should all be considered when predicting the future of cacao production. Incorporating these physiological responses to various environmental conditions and developing a deeper understanding of the processes underlying these responses will help to accelerate the development of a more resource use efficient tree ensuring sustainable production into the future.

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“…; Rakocevic et al . ). Still, there are no large‐scale FACE experiments on the whole of the African continent.…”

Section: Response Of Plant Productivity To Future [Co2] and [O3]mentioning

confidence: 97%

The influence of rising tropospheric carbon dioxide and ozone on plant productivity

2019

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Human activities result in a wide array of pollutants being released to the atmosphere. A number of these pollutants have direct effects on plants, including carbon dioxide (CO 2 ), which is the substrate for photosynthesis, and ozone (O 3 ), a damaging oxidant. How plants respond to changes in these atmospheric air pollutants, both directly and indirectly, feeds back on atmospheric composition and climate, global net primary productivity and ecosystem service provisioning. Here we discuss the past, current and future trends in emissions of CO 2 and O 3 and synthesise the current atmospheric CO 2 and O 3 budgets, describing the important role of vegetation in determining the atmospheric burden of those pollutants. While increased atmospheric CO 2 concentration over the past 150 years has been accompanied by greater CO 2 assimilation and storage in terrestrial ecosystems, there is evidence that rising temperatures and increased drought stress may limit the ability of future terrestrial ecosystems to buffer against atmospheric emissions. Long-term Free Air CO 2 or O 3 Enrichment (FACE) experiments provide critical experimentation about the effects of future CO 2 and O 3 on ecosystems, and highlight the important interactive effects of temperature, nutrients and water supply in determining ecosystem responses to air pollution. Long-term experimentation in both natural and cropping systems is needed to provide critical empirical data for modelling the effects of air pollutants on plant productivity in the decades to come.

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Structural and functional changes in coffee trees after 4 years under free air CO2 enrichment

Abstract: The responses of Arabica coffee grown under long-term exposure to e[CO2] integrated structural and functional modifications, which balanced leaf area loss through improvements in leaf and whole-plant photosynthesis.

Cited by 39 publications

References 58 publications

Variations in leaf growth parameters within the tree structure of adult Coffea arabica in relation to seasonal growth, water availability and air carbon dioxide concentration

Variations in leaf growth parameters within the tree structure of adult Coffea arabica in relation to seasonal growth, water availability and air carbon dioxide concentration

The physiological responses of cacao to the environment and the implications for climate change resilience. A review

The influence of rising tropospheric carbon dioxide and ozone on plant productivity

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