Entries by Aime Jaskolowski

Circadian oscillations of cytosolic free calcium regulate the Arabidopsis circadian clock (Nature Plants)

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The circadian rhythm confers competitive advantages by coordinating the physiology and behavior of biological systems. The internal clock in eukaryote organisms comprises feedback loops, and in Arabidopsis most of them involve negative transcriptional regulation events as well as post-transciptional, post-translational and metabolic regulation. In this paper, Martí Ruiz et al. show a direct association between […]

Photosynthesis and circadian rhythms regulate the buoyancy of marimo lake balls (Curr. Biol.)

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Marimo are aggregations of the filamentous green macroalga Aegagropila linnaei. They grow in lake beds in Japan, Iceland and Ukraine and are can rise to the lake surface after becoming buoyant. In this paper, Cano-Ramirez et al. showed that this movement is the product of the formation of air bubbles by photosynthesis. Given that photosynthesis […]

The floral C-lineage genes trigger nectary development in petunia and Arabidopsis

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Nectar production is a crucial feature of plants to attract insects and enhance their expansion across the ecosystems. The molecular basis of nectary development has been studied in detail only in the model plant Arabidopsis thaliana, where the nectaries are positioned on the flower receptacle and near the base of the stamen filaments. In this […]

Chloroplast biogenesis controlled by DELLA-TOC159 interaction in early plant development (Curr. Biol.)

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Plant photosynthesis occurs in the chloroplast, the green organelles that are the most famous members of the plastid family. Chloroplast biogenesis starts with illumination at germination, when the colorles, non-photosynthetic proplastid acquires photosynthetic activity as it greens. Gaining photosynthetic function depends on the import of thousands of different preproteins into the developing organelle through the […]

A single cis-element that controls cell-type specific expression in Arabidopsis (bioRxiv)

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Multicellular organisms have different tissues that carry out diverse and specialized functions, and tissue-specific expression is the feature that gives each tissue its specific protein content. Despite its importance, the mechanisms that control spatial patterning is poorly understood. In this work, Kneřová et al. focus their investigation in the transcription factor MYB76 that is expressed […]