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Transcriptomic Analyses Reveal That Coffea arabica and Coffea canephora Have More Complex Responses under Combined Heat and Drought than under Individual Stressors
Publication . Marques, Isabel; Fernandes, Isabel; Paulo, Octávio S.; Batista, Dora; Lidon, Fernando C.; Rodrigues, Ana P.; Partelli, Fábio L.; DaMatta, Fábio M.; Ribeiro-Barros, Ana I.; Ramalho, José C.; GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias; MDPI - Multidisciplinary Digital Publishing Institute
Increasing exposure to unfavorable temperatures and water deficit imposes major constraints on most crops worldwide. Despite several studies regarding coffee responses to abiotic stresses, transcriptome modulation due to simultaneous stresses remains poorly understood. This study unravels transcriptomic responses under the combined action of drought and temperature in leaves from the two most traded species: Coffea canephora cv. Conilon Clone 153 (CL153) and C. arabica cv. Icatu. Substantial transcriptomic changes were found, especially in response to the combination of stresses that cannot be explained by an additive effect. A large number of genes were involved in stress responses, with photosynthesis and other physiologically related genes usually being negatively affected. In both genotypes, genes encoding for protective proteins, such as dehydrins and heat shock proteins, were positively regulated. Transcription factors (TFs), including MADS-box genes, were down-regulated, although responses were genotype-dependent. In contrast to Icatu, only a few drought- and heat-responsive DEGs were recorded in CL153, which also reacted more significantly in terms of the number of DEGs and enriched GO terms, suggesting a high ability to cope with stresses. This research provides novel insights into the molecular mechanisms underlying leaf Coffea responses to drought and heat, revealing their influence on gene expression.
Effect of calcium on quality parameters in three varieties of tubers of Solanum tuberosum L. at harvest and after four and eight months of cold storage conservation
Publication . Coelho, Ana Rita F.; Lidon, Fernando Cebola; Daccak, Diana; Luís, Inês Carmo; Marques, Ana Coelho; Pessoa, Cláudia Campos; Silva, Maria Manuela; Simões, Manuela; Legoinha, Paulo; Ramalho, José Cochicho; Pais, Isabel P.; Semedo, José Manuel Ferreira Nobre; Scotti-Campos, Paula; Gonçalves, Elsa M.; Alvarenga, Nuno; Gomes, Sandra Fernandes; Reboredo, Fernando Henrique; DCT - Departamento de Ciências da Terra; GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias; United Arab Emirates University
Potato (Solanum tuberosum L) is one of the most important food crops worldwide, being a carbohydrate-rich food and presenting a good source of vitamins and minerals. Moreover, the mineral enrichment of potatoes through foliar application has been implemented over the years, namely in calcium (Ca). As such, this study aimed to assess the Ca effect on some quality parameters in three varieties of tubers of Solanum tuberosum L. plants produced in Portugal (Agria, Picasso, and Rossi) and submitted to Ca biofortification process carried out with two types of Ca (CaCl2 and Ca-EDTA) and two different concentrations (12 and 24 kg.ha-1), at harvest and after four and eight months under cold storage con-servation. The Ca content increased with the biofortification treatments in the three varieties relative to control tubers and different correlations were observed between the mineral elements analyzed (Ca, P, K, Fe, Zn, and Mg). Only Agria (the control and treatment with 24 kg.ha-1 of Ca-EDTA) was found suitable for industrial processing in the three periods analyzed (harvest, 4M and 8M) and overall, both in raw and cooked tubers, there were differences between each variety considering the work strength, adhesiveness and CIELAB parameters (L, a*, and b*).
Foliar Spraying with ZnSO4 or ZnO of Vitis vinifera cv. Syrah Increases the Synthesis of Photoassimilates and Favors Winemaking
Publication . Daccak, Diana; Marques, Ana Coelho; Pessoa, Cláudia Campos; Coelho, Ana Rita F.; Luís, Inês Carmo; Brito, Graça; Kullberg, José Carlos; Ramalho, José C.; Rodrigues, Ana Paula; Scotti-Campos, Paula; Pais, Isabel P.; Semedo, José N.; Silva, Maria Manuela; Legoinha, Paulo; Galhano, Carlos; Simões, Manuela; Reboredo, Fernando H.; Lidon, Fernando C.; DCT - Departamento de Ciências da Terra; GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias; MDPI - Multidisciplinary Digital Publishing Institute
Zinc enrichment of edible food products, through the soil and/or foliar application of fertilizers, is a strategy that can increase the contents of some nutrients, namely Zn. In this context, a workflow for agronomic enrichment with zinc was carried out on irrigated Vitis vinifera cv. Syrah, aiming to evaluate the mobilization of photoassimilates to the winegrapes and the consequences of this for winemaking. During three productive cycles, foliar applications were performed with ZnSO4 or ZnO, at concentrations ranging between 150 and 1350 g.ha−1. The normal vegetation index as well as some photosynthetic parameters indicated that the threshold of Zn toxicity was not reached; it is even worth noting that with ZnSO4, a significant increase in several cases was observed in net photosynthesis (Pn). At harvest, Zn biofortification reached a 1.2 to 2.3-fold increase with ZnSO4 and ZnO, respectively (being significant relative to the control, in two consecutive years, with ZnO at a concentration of 1350 g.ha−1). Total soluble sugars revealed higher values with grapes submitted to ZnSO4 and ZnO foliar applications, which can be advantageous for winemaking. It was concluded that foliar spraying was efficient with ZnO and ZnSO4, showing potential benefits for wine quality without evidencing negative impacts.
Smart Agricultural System using Proximal Sensing, Artificial Intelligence and LoRa technology
Publication . Araujo, Sara Oleiro; Peres, Ricardo Silva; Pian, Livia Bischof; Lidon, Fernando; Ramalho, Jose Cochicho; Barata, Jose; DCT - Departamento de Ciências da Terra; UNINOVA-Instituto de Desenvolvimento de Novas Tecnologias; CTS - Centro de Tecnologia e Sistemas; DEE - Departamento de Engenharia Electrotécnica e de Computadores; GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias; Institute of Electrical and Electronics Engineers (IEEE)
The agricultural sector faces significant challenges, including resource inefficiency, unpredictable weather conditions, and the need for sustainable practices. These issues necessitate the application of advanced methods introduced by Agriculture 4.0 to ensure productivity and sustainability. This paper focus on the application of the Intelligent Data-Driven Decision Support System for Agricultural Systems (ID3SAS) methodology to a proximal sensing case study aimed at improving vineyard management via monitoring and predictive modeling with Artificial Intelligence. The developed system was deployed in vineyards in Portugal, and provided a robust test-bed for real-world application.
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Fundação para a Ciência e a Tecnologia
Programa de financiamento
Concurso de avaliação no âmbito do Programa Plurianual de Financiamento de Unidades de I&D (2017/2018) - Financiamento Base
Número da atribuição
UIDB/00239/2020