Recent Posts

Chloroplast Biogenesis in Germinating Seeds: A Multi-Dimensional Approach

Zizhen et al. perform electron tomography and correlative gene expression analyses of thylakoid assembly in greening Arabidopsis cotyledons Plant Cell (2018) https://doi.org/10.1105/tpc.17.00972 By Byung-Ho Kang Background: The chloroplast produces carbohydrates and molecular oxygen from water,…

A New Epigenetic Switch Regulating Histone Modification

Mateo-Bonmatí et al. have found novel components of the Arabidopsis epigenetic machinery. Plant Cell (2018). https://doi.org/10.1105/tpc.18.00300  By Eduardo Mateo-Bonmatí, Lucía Juan-Vicente, Riad Nadi, and José Luis Micol Background: In multicellular organisms, most cells contain the same…

Gating of miRNA movement at defined cell-cell interfaces governs their impact as positional signals

Small RNAs constitute a unique signal transduction mechanism by targeting specific mRNAs and causing a direct down-regulation of target gene expression. Mobile RNAs are known to act as positional cues in developing tissues or to signal stress responses at the systemic level. Although plasmodesmata…

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

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…

Ectopic BASL reveals tissue cell polarity throughout leaf development in Arabidopsis thaliana

Signals determining tissue polarity are fundamental to proper organ development. Asymmetry across the entire organ  arises due to to polarity fields. Although there are numerous examples of proteins that express preferential polar localization in the cell, the mechanism that coordinates the polarity…

A RopGEF regulates asexual reproduction in the liverwort Marchantia polymorpha

Complex developmental programs regulate tissue and organ formation throughout the green plant lineage, from early diverging non-vascular lineages (bryophytes) to vascular flowering (angiosperm) plants. In the model liverwort Marchantia polymorpha, epidermal patterning gives rise to surface structures…

Tectonic Movements Across the Tomato Genome

Corem et al. demonstrate a switch in DNA methylation patterns across the tomato genome. The Plant Cell (2018). https://doi.org/10.1105/tpc.18.00167. By Shira Corem, Tzahi Arazi and Nicolas Bouché Background: Crop genomes are covered by transposons, which are DNA sequences that can jump from one…

Mitigating Yield Loss Under Global Warming

Ma et al. investigate epigenetic aspects of heat-induced male sterility in cotton. By Yizan Ma, Ling Min and Xianlong Zhang Background:  Global warming causes extremely high temperatures in summer in some areas. Certain crops cultivated in summer cannot tolerate extreme heat stress and begin…

Phytochrome B has Two Weapons to Disable its Interacting Proteins

Park et al. demonstrate that phytochrome B preferentially inhibits its interacting transcription factors via one of two mechanisms depending on light conditions. The Plant Cell (2018). https://doi.org/10.1105/tpc.17.00913. By Eunae Park Background: Phytochrome B (phyB) is a plant photoreceptor…