Entries by Magdalena Julkowska

Spot the Difference: Distinct Cargo-Specific Functionality of Two Closely Related SNAREs

Exocytosis is a form of an active transport in which vesicles fuse with the plasma membrane. This vesicle transport secretes soluble cargo proteins and polysaccharides into the apoplast, but also delivers membrane lipids and transmembrane proteins to the plasma membrane. Vesicle trafficking is initiated in the Golgi complex, where the cargoes are sorted and packed […]

Contribution of epigenetic variation to adaptation in Arabidopsis (Nature Comms)

It is known that changes in the epigenetic state can be inherited, but whether the epigenetic changes are subject to natural selection is uncharted territory. Schmid et al. examined the phenomic and epigenomic changes in Arabidopsis accessions that underwent selection to simulated habitat fragmentation. Five generations of selection resulted in alterations of plants’ phenotype and […]

Review. Review. Functional phenomics: An emerging field integrating high-throughput phenotyping, physiology, and bioinformatics (J. Exp. Bot)

Understanding the processes contributing to plant productivity will help to secure food production in the future. Larry York proposes how this can be achieved using functional phenomics. First the ideotype needs to be constructed; the ideotype is a set of phene states that are hypothesized to enhance plant performance in a given environment. The ideotype […]

Stress Management: OsIDS1 Modulates Histone Deacetylation to Repress Salt Tolerance Genes

Plants evolved to react to the changing environment by developing sensing and signal transduction mechanisms, which ultimately lead to changes in gene expression and altered plant performance. Transcription factors (TFs) are key to regulating the expression of individual genes. TFs can confer sequence specificity to chromatin remodelers, further shaping the transcriptional landscape in response to […]

Digital imaging combined with genome-wide association mapping links loci to plant-pathogen interaction traits (Plant Phys.)

Resistance to plant pathogens is often studied as a qualitative trait than quantitative, focusing on the lesion size and pathogen numbers. However, resistance to generalist plant pathogens, such as Botrytis cinerea, is known to involve multiple genes. Fordyce et al. used high-throughput phenotyping for quantification of Botrytis infection in Arabidopsis. The authors studied color, shape, and […]

The xerobranching response represses lateral root formation when roots are not in contact with water (Curr. Biol. – $)

Roots navigate through the soil, foraging for water and nutrients. Orman-Ligeza et al. observed that lateral root development is repressed when the roots are growing through the soil air spaces. Exposure to water deficit induced transcriptome reprogramming in barley roots of genes involved in many hormone pathways. The reduced lateral root formation was also occurring […]

A gene‐stacking approach to overcome the trade‐off between drought stress tolerance and growth in Arabidopsis (Plant J)

In the face of increasing incidence of drought events, developing drought-tolerant plants becomes urgent matter. However, the increase in drought tolerance often coincides with the significant reduction of plant size, as in the case of overexpressing DEHYDRATION-RESPONSIVE ELEMENT-BINDING PROTEIN 1A (DREB1A). Kudo et al. combined DREB1A with genes promoting plant growth, including gibberellin biosynthesis enzyme […]

Review – Cellular basis of growth in plants: geometry matters (COPB – $) 

Plants exhibit various forms which are determined by the individual cells. The diversity of cell shapes within a single organism is astounding and results from the interactions between the pressure generated by the cell and surrounding tissue as well as heterogeneities in the cell wall composition. As the pressure within the cell is comparable with […]

A plant chitinase controls cortical infection thread progression and nitrogen-fixing symbiosis (eLIFE)

Nitrogen-fixing bacteria produce species-specific chitin-like molecules, Nod factors, which induce nodule development and infection thread formation in the host plant, aiding microbial infection. Malolepszy et al. performed a detailed study of symbiotic defective mutants in lotus (chit5), where the nodule primordia do not develop into nodules after inoculation with M.loti. CHIT5 was observed to function in […]