Photosynthesis in coffee (Coffea arabica and C. canephora) as affected by winter and summer conditions

Matta, F. M. Da; Maestri, Moacyr; Mosquim, Paulo Roberto; Barros, Raimundo Santos

doi:10.1016/s0168-9452(97)00142-8

Cited by 61 publications

(42 citation statements)

References 29 publications

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“…After 9:00 h, despite the increase in PAR (Figure 2), photosynthetic rates decreased steadily to reach negligible values at sunset. Those results are in agreement with the values measured by DaMatta et al (1997) for young coffee trees of cultivar Catuai and by Mazzafera et al (1995) for high and low yield plants. Leaf 2 showed the highest values for integrated net photosynthesis, in mmol CO 2 m -2 , during the whole day and during the morning (up to 12:00h); they were almost 3.5 times the values obtained by leaf 3.…”

Section: Resultssupporting

confidence: 93%

Fotossíntese de folhas individuais de um cafeeiro

Marur

Faria

2006

Acta Sci. Agron.

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ABSTRACT. The great variability in income irradiance over a plant canopy makes difficult the comparison of photosynthesis rates among leaves in a plant and their integration. In this study, photosynthetical rates of ten different leaves of a coffee plant were obtained during a day. The daily variation in photosynthetic rates showed a peak between 7:00 h and 9:00 h with higher values measured for the leaves positioned at the sunrise direction and northern orientation. Lower values were consistently observed for leaves at inner position of the plant. After 9:00 h, despite the increase in photosynthetically active radiation, photosynthetic rates decreased steadily to reach negligible values at sunset. The reductions on photosynthesis rates can also be attributed to increasing stomatal resistance. Since number of leaves is highly variable in coffee plants, those results make evident how difficult is to integrate and estimate whole plant photosynthesis by taking the average of 10 leaves.Key words: Coffea, photosynthesis, air temperature, leaf temperature, photosynthetically active radiation, stomatal resistance. RESUMO. Fotossíntese de folhas individuais de um cafeeiro.A grande variabilidade na radiação solar incidindo em uma planta dificulta a comparação e integração das taxas fotossintéticas obtidas de diferentes folhas. Neste trabalho foram medidas, durante um dia, as taxas fotossintéticas de dez folhas, localizadas em pontos representativos em uma planta de cafeeiro. Foram observadas máximas taxas entre as 7:00 e 9:00 h, sendo os maiores valores encontrados nas folhas voltadas ao nascer do sol e na orientação norte. Os menores valores foram consistentemente observados nas folhas posicionadas no interior da planta. Após as 9:00 h, a despeito do aumento na radiação fotossintéticamente ativa, as taxas fotossintéticas diminuíram constantemente até o final do dia. Estas reduções podem ser atribuídas também aos crescentes valores de resistência estomática. Uma vez que o número de folhas é altamente variável em plantas de cafeeiro, os resultados evidenciam a dificuldade em integrar e estimar a fotossíntese de uma planta inteira usando médias de medidas tomadas em dez folhas individuais.Palavras-chave: Coffea, fotossíntese, temperatura do ar, temperatura da folha, radiação fotossintéticamente ativa, resistência estomática.

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Section: Resultssupporting

confidence: 93%

Fotossíntese de folhas individuais de um cafeeiro

Marur

Faria

2006

Acta Sci. Agron.

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“…Such cold-induced tolerance includes increases in enzyme activities (e.g., from the Calvin cycle and sugar metabolism), reinforcement of energy dissipation mechanisms and antioxidative molecules, qualitative and quantitative changes in lipid (e.g., level of FA saturation) and protein membrane composition, all protecting cell structures and keeping metabolic pathway regulation mechanisms, as reported for coffee (DaMatta et al, 1997b;Campos et al, 2003;Ramalho et al, 2003;Quartin et al, 2004). In addition, the maintenance of respiratory metabolism is also of great importance, since it allows the production of energy, reducing power and metabolic intermediates, necessary for repair processes that are increasingly important under chilling conditions.…”

Section: Low Positive Temperature Stressmentioning

confidence: 81%

“…Low positive temperatures often occur in production areas resulting in a depressing F. M. DAMATTA and J.D.C. RAMALHO effect on growth, photosynthetic performance and yields (Bauer et al, 1985;DaMatta et al, 1997b;Ramalho et al, 2003;DaMatta, 2004a). Also, low air temperature plays a key role in controlling seasonal growth, as occurs in southeastern Brazil (Barros et al, 1997;Silva et al, 2004).…”

Section: Low Positive Temperature Stressmentioning

confidence: 99%

Impacts of drought and temperature stress on coffee physiology and production: a review

DaMatta

Ramalho

2006

Braz. J. Plant Physiol.

430

380

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Overall, drought and unfavourable temperatures are the major climatic limitations for coffee production. These limitations are expected to become increasingly important in several coffee growing regions due to the recognized changes in global climate, and also because coffee cultivation has spread towards marginal lands, where water shortage and unfavourable temperatures constitute major constraints to coffee yield. In this review, we examine the impacts of such limitations on the physiology, and consequently on the production of mainly Coffea arabica and C. canephora, which account for about 99 % of the world coffee bean production. The first section deals with climatic factors and the coffee plant's requirements. The importance of controlling oxidative stress for the expression of drought and cold tolerance abilities is emphasized in the second section. In the third section, we examine the impacts of drought on cell-water relations, stomatal behaviour and water use, photosynthesis and crop yield, carbon and nitrogen metabolism, root growth and characteristics, and on drought tolerance. In the fourth section, the impacts of low positive and high temperatures on coffee physiology are discussed; some insights about effects of negative temperatures are also presented. Finally, the last section deals with shading in harsh environments as a mean of buffering climatic fluctuations, as well as of increasing environmental sustainability in coffee exploitation. Key words: Coffea, chilling, frost, heat, photosynthesis, water deficit, water use, yield.Impactos da seca e do estresse térmico sobre a fisiologia e a produção do cafeeiro: uma revisão: De modo geral, seca e temperaturas desfavoráveis são as principais limitações climáticas à produção do cafeeiro. A importância de tais limitações deve aumentar, em função das mudanças reconhecidas no clima global e, também, porque a cafeicultura vem sendo expandida para regiões marginais onde secas e temperaturas desfavoráveis se constituem em grandes limitações à produção do café. Nesta revisão, analisam-se os impactos de tais limitações sobre a fisiologia, e por extensão sobre a produção, principalmente de Coffea arabica e C. canephora, que respondem por cerca de 99 % da produção mundial. A primeira seção deste trabalho aborda as exigências climáticas do cafeeiro. Na segunda seção, enfatiza-se a importância do controle do estresse oxidativo para a expressão da capacidade de tolerância à seca e ao frio. Na terceira, examinam-se os impactos da seca sobre as relações hídricas em nível celular, comportamento estomático e uso da água, fotossíntese e produção, metabolismo do carbono e do nitrogênio, caracterís-ticas e respostas de crescimento das raízes, além da tolerância à seca. Na quarta seção, discutem-se impactos tanto de baixas temperaturas positivas como de altas temperaturas sobre a fisiologia do cafeeiro; apresentam-se, também, algumas informações sobre efeitos de temperaturas negativas. Finalmente, na última seção, discute-se sobre o sombreamento como um meio de tamponament...

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“…Franck et al (2006) noted a negative correlation between A and total soluble sugars and concluded, from sucrose-feeding experiments, that the source-sink down-regulation of A in leaves from girdled coffee branches is mediated by sucrose content in the phloem of source leaves. In contrast, DaMatta et al (1997) found that starch accumulation could be associated with decreases in A, whilst , working with potted coffee displaying variant source-to-sink ratios, demonstrated that A correlated neither with starch, sucrose or hexoses but rather correlated inversely with the hexoses-to-amino acids ratio. The latter finding is in accordance with Paul and Pellny´s observation (Paul and Pellny, 2003) that A is dependent on active pools of both carbon and nitrogen rather than merely on the carbohydrate status alone.…”

Section: Photosynthesis and Source-to-sink Balancementioning

confidence: 81%

“…The significant correlation between A and g s , as found for arabica coffee, but not for conilon, might be associated with the better coupling of g s with the atmospheric evaporative demand in the former. Sources: Meinzer et al (1990Meinzer et al ( , 1992, DaMatta et al (1997DaMatta et al ( , 2002DaMatta et al ( , 2003DaMatta et al ( , 2008, Carelli et al (1999), Silva et al (2004), Pinheiro et al (2004), Gómez et al (2005), Cai et al (2005Cai et al ( , 2007, Praxedes et al (2006), , Ronquim et al (2006), Dias et al (2007), Chaves et al (2008).…”

Section: Photosynthesis and Crop Yieldmentioning

confidence: 99%

Ecophysiology of coffee growth and production

DaMatta

Ronchi

Maestri

et al. 2007

Braz. J. Plant Physiol.

Self Cite

349

242

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After oil, coffee is the most valuable traded commodity worldwide. In this review we highlighted some aspects of coffee growth and development in addition to focusing our attention on recent advances on the (eco)physiology of production in both Coffea arabica and C. canephora, which together account for 99% of the world coffee bean production. This review is organized into sections dealing with (i) climatic factors and environmental requirements, (ii) root and shoot growth, (iii) blossoming synchronisation, fruiting and cup quality, (iv) competition between vegetative and reproductive growth and branch die-back, (v) photosynthesis and crop yield, (vi) physiological components of crop yield, (vii) shading and agroforestry systems, and (viii) high-density plantings. Key words: arabica, conilon and robusta coffee, beverage quality, density planting, die-back, flowering, photosynthesis, shading Ecofisiologia do crescimento e da produção do cafeeiro: O cafeeiro, depois do petróleo, é a principal mercadoria comercializada no mundo. Nesta revisão, analisam-se aspectos do crescimento e desenvolvimento do cafeeiro, dandose, também, ênfase aos avanços recentes sobre a (eco)fisiologia da produção de Coffea arabica e C. canephora, que respondem por cerca de 99% da produção mundial de café. Abordam-se (i) os fatores climáticos e requerimentos ambientes, (ii) crescimento da parte aérea e das raízes, (iii) sincronização da floração, frutificação e qualidade da bebida, (iv) competição entre os crescimentos vegetativo e reprodutivo e ocorrência de seca de ramos; (v) fotossíntese e produção, (vi) componentes fisiológicos da produção, (vii) sombreamento e sistemas agroflorestais, e (viii) plantios adensados. Palavras-chave: cafeeiros arábica, conilon e robusta, fotossíntese, floração, qualidade de bebida, seca de ramos, sombreamento

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Photosynthesis in coffee (Coffea arabica and C. canephora) as affected by winter and summer conditions

Cited by 61 publications

References 29 publications

Fotossíntese de folhas individuais de um cafeeiro

Fotossíntese de folhas individuais de um cafeeiro

Impacts of drought and temperature stress on coffee physiology and production: a review

Ecophysiology of coffee growth and production

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