Reciprocal grafting between clones with contrasting drought tolerance suggests a key role of abscisic acid in coffee acclimation to drought stress

Silva, Vânia Aparecida da; Prado, Fernanda Manso; Antunes, Werner Camargos; Paiva, Rita Márcia Cardoso de; Ferrão, Maria Amélia Gava; Andrade, Alan Carvalho; Mascio, Paolo Di; Loureiro, Marcelo Ehlers; DaMatta, Fábio M.; Almeida, Aparecida Marques de

doi:10.1007/s10725-018-0385-5

Cited by 31 publications

(16 citation statements)

References 31 publications

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“…Decreased shoot ethylene production was consistent with downregulation of the CaACO1-like gene (Figure 2C), and the activity of ACO enzymes (Andersen et al, 2004;Larrainzar et al, 2014; J o u r n a l P r e -p r o o f Rickes et al, 2019;Song et al, 2016). Significant ABA accumulation occurs in coffee during the dry season in response to leaf water deficit (Silva et al, 2018), which may limit expression of ACO genes (Cheng et al, 2009;Linkies et al, 2009) or ACO activity (Bailly et al, 1992;Linkies et al, 2009;Marino et al, 2017). Nevertheless, not every gene involved in ethylene biosynthesis responded to water deficit (e.g.…”

Section: Soil Drying and Re-watering Effects On Ethylene Relations And Leaf Gas Exchangesupporting

confidence: 59%

“…J o u r n a l P r e -p r o o f Synthesis Based on the results of this and previous studies described in the literature we propose a model describing the effects of water deficit and re-watering on promoting anthesis in coffee, and effects of Harvista (1-MCP) treatment (Figure 8). Soil drying increases shoot ABA levels (Silva et al, 2018) either due to enhanced in situ synthesis or ABA transport from the roots (Castro et al, 2019), thereby decreasing shoot ethylene levels (Sharp, 2002), probably by downregulating CaACO1-like expression (Figure 2), and possibly ethylene sensitivity, considering the absence of changes in CaERT4-like expression. Furthermore, inhibition of ACC oxidase activity by ABA (Bailly et al, 1992;Linkies et al, 2009;Marino et al, 2017), and enhanced ACC conjugation under water-deficit conditions (Andersen et al, 2004) contribute to decreasing shoot ethylene production.…”

Section: Soil Drying and Re-watering Effects On Ethylene Relations And Leaf Gas Exchangementioning

confidence: 99%

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Drought and re-watering modify ethylene production and sensitivity, and are associated with coffee anthesis

Lima

Santos

Torres

et al. 2021

Environmental and Experimental Botany

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Section: Soil Drying and Re-watering Effects On Ethylene Relations And Leaf Gas Exchangesupporting

confidence: 59%

Section: Soil Drying and Re-watering Effects On Ethylene Relations And Leaf Gas Exchangementioning

confidence: 99%

Drought and re-watering modify ethylene production and sensitivity, and are associated with coffee anthesis

Lima

Santos

Torres

et al. 2021

Environmental and Experimental Botany

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“…4). ABA is determinant to stomata responses to increased air evaporative demand and/or reduced soil water availability (Buckley 2019), and a greater ABA synthesis has been implicated in drought tolerance in coffee trees via reductions in g s , which in turn restrain the transpiration flow and postpone plant dehydration (Silva et al 2018).…”

Section: Single Drought Impact On Photosynthetic Performance and Compmentioning

confidence: 99%

Intrinsic non-stomatal resilience to drought of the photosynthetic apparatus in Coffea spp. is strengthened by elevated air [CO2]

et al. 2020

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Growing water restrictions associated with climate changes constitute daunting challenges to crop performance. This study unveils the impacts of moderate (MWD) or severe (SWD) water deficit, and their interaction with air [CO2], on the photosynthetic apparatus of Coffea canephora Pierre ex A. Froehner cv. Conilon Clone 153 (CL153) and Coffea arabica L. cv. Icatu. Seven year-old potted plants grown under 380 (aCO2) or 700 μl l −1 (eCO2) [CO2] gradually reached predawn water potentials between −1.6 and −2.1 MPa (MWD), and below −3.5 MPa (SWD). Under drought, stomata closure was chiefly related to abscisic acid (ABA) rise. Increasing drought severity progressively affected gas exchange and fluorescence parameters in both genotypes, with non-stomatal limitations becoming gradually dominating, especially regarding the photochemical and biochemical components of CL153 SWD plants. In contrast, Icatu plants were highly tolerant to SWD, with minor, if any, negative impacts on the potential photosynthetic functioning and components (e.g., Amax, Fv/Fm, electron carriers, photosystems (PSs) and ribulose-1,5-bisphosphate carboxylase oxygenase (RuBisCO) activities). Besides, drought-stressed Icatu plants displayed increased abundance of a large set of proteins associated with the photosynthetic apparatus (PSs, light-harvesting complexes, cyclic electron flow, RuBisCO activase) regardless of [CO2]. Single eCO2 did not promote stomatal and photosynthetic down-regulation in both genotypes. Instead, eCO2 increased photosynthetic performance, moderately reinforced photochemical (PSs activity, electron carriers) and biochemical (RuBisCO, ribulose-5-phosphate kinase) components, whereas photoprotective mechanisms and protein abundance remained mostly unaffected. In both genotypes, under MWD, eCO2 superimposition delayed stress severity and promoted photosynthetic functioning with lower energy dissipation and PSII impacts, whereas stomatal closure was decoupled from increases in ABA. In SWD plants, most impacts on the photosynthetic performance were reduced by eCO2, especially in the moderately drought affected CL153 genotype, although maintaining RuBisCO as the most sensitive component, deserving special breeder’s attention to improve coffee sustainability under future climate scenarios.

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“…In general, coffee trees display a differential reduction on leaf water potential 9 and stomatal closure in response to abscisic acid biosynthesis and signaling 10 . As a consequence, there is a reduction in the intercellular concentration of CO 2 and a greater resistance to the mesophyll, leading to a decreasing photosynthesis rate 11 .…”

Section: Introductionmentioning

confidence: 99%

Photochemical efficiency correlated with candidate gene expression promote coffee drought tolerance

Santos

Coelho

Carvalho

et al. 2021

Sci Rep

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The aim of this study was to identify the correlation between photochemical efficiency and candidate genes expression to elucidate the drought tolerance mechanisms in coffee progenies (Icatu Vermelho IAC 3851-2 × Catimor UFV 1602-215) previously identified as tolerant in field conditions. Four progenies (2, 5, 12 and 15) were evaluated under water-deficit conditions (water deficit imposed 8 months after transplanting seedlings to the pots) and under irrigated system. Evaluations of physiological parameters and expression of candidate genes for drought tolerance were performed. Progeny 5 showed capacity to maintain water potential, which contributed to lower qP variation between irrigated and deficit conditions. However, the increases of qN and NPQ in response to stress indicate that this progeny is photochemically responsive to small variations of Ψam protecting the photosystem and maintaining qP. Data obtained for progeny 12 indicated a lower water status maintenance capacity, but with increased qN and NPQ providing maintenance of the ɸPSII and ETR parameters. A PCA analysis revealed that the genes coding regulatory proteins, ABA-synthesis, cellular protectors, isoforms of ascorbate peroxidase clearly displayed a major response to drought stress and discriminated the progenies 5 and 12 which showed a better photochemical response. The genes CaMYB1, CaERF017, CaEDR2, CaNCED, CaAPX1, CaAPX5, CaGolS3, CaDHN1 and CaPYL8a were up-regulated in the arabica coffee progenies with greater photochemical efficiency under deficit and therefore contributing to efficiency of the photosynthesis in drought tolerant progenies.

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Reciprocal grafting between clones with contrasting drought tolerance suggests a key role of abscisic acid in coffee acclimation to drought stress

Cited by 31 publications

References 31 publications

Drought and re-watering modify ethylene production and sensitivity, and are associated with coffee anthesis

Drought and re-watering modify ethylene production and sensitivity, and are associated with coffee anthesis

Intrinsic non-stomatal resilience to drought of the photosynthetic apparatus in Coffea spp. is strengthened by elevated air [CO2]

Photochemical efficiency correlated with candidate gene expression promote coffee drought tolerance

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