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, Miroslava; Matsunaga, Fabio Takeshi

doi:10.1093/aob/mcy042

Cited by 26 publications

(17 citation statements)

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“…1, are above the mean stimulation of 17% in FACE experiments with a range of species (Ainsworth and Long 2005), thus demonstrating the suitability of the coffee crop in a high-CO 2 environment even in rain-fed cropping systems. Furthermore, elevated [CO 2 ], as compared with ambient [CO 2 ], promoted increased leaf retention and longer thermal time for blade expansion (4-to 5-year-old plants under FACE conditions) during the drought season (Rakočević and Matsunaga 2018), which also helps to positively impact crop yields.…”

Section: Plant Growth and Crop Yields Are Enhanced Under Elevated [Comentioning

confidence: 99%

“…Decreases in crop yields (Gay et al 2006;Craparo et al 2015), beverage coffee quality , negative impacts on wild populations of C. arabica (Davis et al 2012;Moat et al 2017), greater pest incidence (Avelino et al 2015;Magrach and Ghazoul 2015), and increased agricultural, social, and economic vulnerabilities (Baca et al 2014) have been also foreseen. Nevertheless, these pessimistic findings have not considered the potential positive effects of elevated [CO 2 ] on coffee photosynthesis (Ramalho et al 2013;Ghini et al 2015;DaMatta et al 2016) and leaf retention (Rakočević and Matsunaga 2018) or the role of CO 2 as a key player in coffee heat tolerance (Martins et al 2016;Rodrigues et al 2016) probably because only very recently this information has become available for the coffee crop. Furthermore, the recognized resilience of elite coffee genotypes to acclimate to stressful conditions (Fortunato et al 2010;Batista-Santos et al 2011;Cavatte et al 2012) has also been neglected.…”

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confidence: 99%

“…In this study, we summarize recent insights on the coffee performance at elevated [CO 2 ] in addition to reporting that an increase in air [CO 2 ] plays a significant role for the success of the coffee crop to endure environmental stresses, e.g., rising temperatures and drought due to climate change. These facets are examined by encompassing multiple plant levels, e.g., physiology (Martins et al 2014b(Martins et al , 2016DaMatta et al 2016;Rodrigues et al 2016;, plant structure (Rakočević and Matsunaga 2018;), bean quality traits (Ramalho et al 2018), and yields (this study). We conclude this review article pointing the gaps in our current knowledge on the coffee crop within the context of climate changes and highlights perspectives and research priority needed to advance our understanding on how this crop will respond to the present and ongoing climate changes.…”

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confidence: 99%

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Why could the coffee crop endure climate change and global warming to a greater extent than previously estimated?

et al. 2018

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Coffee, one of the most heavily globally traded agricultural commodities, has been categorized as a highly sensitive plant species to progressive climatic change. Here, we summarize recent insights on the coffee plant's physiological performance at elevated atmospheric carbon dioxide concentration [CO 2 ]. We specifically (i) provide new data of crop yields obtained under free-air CO 2 enrichment conditions, (ii) discuss predictions on the future of the coffee crop as based on rising temperature and (iii) emphasize the role of [CO 2 ] as a key player for mitigating harmful effects of supra-optimal temperatures on coffee physiology and bean quality. We conclude that the effects of global warming on the climatic suitability of coffee may be lower than previously assumed. We highlight perspectives and priorities for further Climatic Change (2019) 152:167-178 https://doi.# The Author(s) 2018research to improve our understanding on how the coffee plant will respond to present and progressive climate change.The current rise in atmospheric carbon dioxide concentration ([CO 2 ]) is one of the major drivers of global warming and climatic change. Atmospheric [CO 2 ] has increased approximately by 43% from the pre-industrial levels of 280 μL L −1 air in 1750 to current levels exceeding 400 μL L −1 air, and global mean surface temperature has increased by 0.85°C over the same period. Depending on the greenhouse gas emission scenarios, projections indicate that, at the end of this century, atmospheric [CO 2 ] might rise between 421 and 936 μL L −1 air, in parallel with a rise in global temperature between 0.3-1.7°C (best scenario) and 2.6-4.8°C (worst scenario), relative to 1986 (IPCC 2013 IPCC 2014). These long-term changes, coupled with climate variability, such as longer and unpredictable droughts and sometimes excessive rainfall, are expected to threaten the sustainability of agricultural production on a global scale, with consequences on the amount and quality of harvestable crops for the actual production areas (DaMatta et al. 2010).Plants sense and respond directly to rising atmospheric [CO 2 ] through an increase in net photosynthesis rate (A) and, frequently, a decrease in stomatal conductance (g s ), and this is the basis for the CO 2 fertilization effect on crops with corresponding increase in yields (Long et al. 2006;Ainsworth and Rogers 2007). Meta-analyses of free-air CO 2 enhancement (FACE) experiments have reported mean reductions in g s of 22% and increases in light-saturated (A) of 31% across a range of C 3 species for an increase in [CO 2 ] from approximately 366 to 567 μL L −1 air (Ainsworth and Rogers 2007). Increases in A with enhanced [CO 2 ] in the chloroplast of C3 plants are associated with a stimulation of the carboxylation rate of ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO), the rate-limiting step in photosynthesis at saturating light and current [CO 2 ] levels, and a concomitant reduction (or even suppression) of its oxygenation function, and thus the rate of photorespiration (Ainsw...

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Section: Plant Growth and Crop Yields Are Enhanced Under Elevated [Comentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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“…Plants under the two UV treatments started to be observed after six months of growth under the two UV environments, with the most of measurements taken in the seventh month. The individual leaf expansion, expressing the dynamic of individual leaf elongation [ 29 ], was assessed through the elongation of the central vein of tagged young leaves (initial length = 20.7 ± 4 mm), emitted at the fourth plagiotropic branch counting from the top of the orthotropic plant axis of each plant (n = 8). Length measurements were taken at intervals of two days, from 172 to 192 DAT (20 November to 10 December), with a ruler until the leaf reached its final length.…”

Section: Methodsmentioning

confidence: 99%

Biomass and Leaf Acclimations to Ultraviolet Solar Radiation in Juvenile Plants of Coffea arabica and C. canephora

Bernado

Rakocevic

Santos

et al. 2021

Plants

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Despite the negative impacts of increased ultraviolet radiation intensity on plants, these organisms continue to grow and produce under the increased environmental UV levels. We hypothesized that ambient UV intensity can generate acclimations in plant growth, leaf morphology, and photochemical functioning in modern genotypes of Coffea arabica and C. canephora. Coffee plants were cultivated for ca. six months in a mini greenhouse under either near ambient (UVam) or reduced (UVre) ultraviolet regimes. At the plant scale, C. canephora was substantially more impacted by UVam when compared to C. arabica, investing more carbon in all juvenile plant components than under UVre. When subjected to UVam, both species showed anatomic adjustments at the leaf scale, such as increases in stomatal density in C. canephora, at the abaxial and adaxial cuticles in both species, and abaxial epidermal thickening in C. arabica, although without apparent impact on the thickness of palisade and spongy parenchyma. Surprisingly, C. arabica showed more efficient energy dissipation mechanism under UVam than C. canephora. UVam promoted elevated protective carotenoid content and a greater use of energy through photochemistry in both species, as reflected in the photochemical quenching increases. This was associated with an altered chlorophyll a/b ratio (significantly only in C. arabica) that likely promoted a greater capability to light energy capture. Therefore, UV levels promoted different modifications between the two Coffea sp. regarding plant biomass production and leaf morphology, including a few photochemical differences between species, suggesting that modifications at plant and leaf scale acted as an acclimation response to actual UV intensity.

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“…Cada octógono do FACE continha quatro linhas orientadas norte-sul, somando 44 plantas. A adição de CO2 ao ar começou em 25 de agosto de 2011 e parou em 30 de junho de 2016 (Rakocevic & Matsunaga, 2018). A concentração de CO2 no início do experimento foi de 390 μL CO2 L -1 .…”

Section: Methodsunclassified

Sensibilidade de respostas de fotossíntese foliar de cafeeiros após o experimento face: existe a memória? / Sensitivity in leaf photosynthesis responses of coffee after the face experiment: does the memory exist?

Rakocevic

Batista

2020

BJAER

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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

Cited by 26 publications

References 53 publications

Why could the coffee crop endure climate change and global warming to a greater extent than previously estimated?

Why could the coffee crop endure climate change and global warming to a greater extent than previously estimated?

Biomass and Leaf Acclimations to Ultraviolet Solar Radiation in Juvenile Plants of Coffea arabica and C. canephora

Sensibilidade de respostas de fotossíntese foliar de cafeeiros após o experimento face: existe a memória? / Sensitivity in leaf photosynthesis responses of coffee after the face experiment: does the memory exist?

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