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Non-Mature miRNA-encoded micropeptide miPEP166c stimulates anthocyanin and proa...
Vale, Mariana; Badim, Hélder; Gerós, H.; Conde, Artur Jorge SilvaThe phenylpropanoid and flavonoid pathways exhibit intricate regulation, not only influenced by environmental factors and a complex network of transcription factors but also by post-transcriptional regulation, such as silencing by microRNAs and miRNA-encoded micropeptides (miPEPs). VviMYBC2-L1 serves as a transcriptional repressor for flavonoids, playing a crucial role in coordinating the synthesis of anthocyan...
The influence of light microclimate on the lipid profile and associated transcr...
Garrido, Andreia; Conde, Artur Jorge Silva; De Vos, Ric C.H.; Cunha, AnaLipids and oils determine the quality and industrial value of grape seeds. Studies with legume seeds demonstrated the influence of light on lipid metabolism and its association with seed photosynthesis. Grape berry seeds are photosynthetically active till mature stage, but mostly during the green stage and veraison. The objective of this work was to compare the lipid profiles of seeds from white grape berries (...
Fruit photosynthesis: more to know about where, how and why
Garrido, Andreia Raquel Martins; Conde, Artur Jorge Silva; Serôdio, João; De Vos, Ric C. H.; Cunha, AnaNot only leaves but also other plant organs and structures typically considered as carbon sinks, including stems, roots, flowers, fruits and seeds, may exhibit photosynthetic activity. There is still a lack of a coherent and systematized body of knowledge and consensus on the role(s) of photosynthesis in these “sink” organs. With regard to fruits, their actual photosynthetic activity is influenced by a range of...
Constitutive expression of VviNAC17 transcription factor significantly induces ...
Badim, Hélder; Vale, Mariana; Coelho, Marco; Granell, Antonio; Gerós, H.; Conde, Artur Jorge SilvaVviNAC17 is a grapevine transcription factor activated by ABA. Because ABA has been proposed as the main signal modulating the secondary metabolism in grape berry skins, here we postulated VviNAC17 as a positive regulator of secondary metabolism in grape cells. To validate the hypothesis, VviNAC17 was constitutively and stably overexpressed in grape berry suspension-cultured cells of Gamay Fréaux cv. by Agrobac...
VvSWEET7 Is a Mono- and Disaccharide Transporter Up-Regulated in Response to Bo...
Breia, Richard Maykel Gonçalves; Conde, Artur Jorge Silva; Pimentel, Diana; Conde, Carlos; Fortes, Ana Margarida; Granell, Antonio; Gerós, H.The newly-identified SWEETs are high-capacity, low-affinity sugar transporters with important roles in numerous physiological mechanisms where sugar efflux is critical. SWEETs are desirable targets for manipulation by pathogens and their expression may be transcriptionally reprogrammed during infection. So far, few plant SWEET transporters have been functionally characterized, especially in grapevine. In this s...