Recent Posts

Review. Small RNAs and extracellular vesicles: New mechanisms of cross-species communication and innovative tools for disease control (PLOS Pathogens)

We have only recently begun to appreciate the phenomenon of cross-species or cross-kingdom small RNA transfer, and its applications. Using examples from plants and animals, Cai et al. summarize how some pathogens have evolved the capacity to introduce small RNAs into their host to suppress host defense…

Gene duplication accelerates the pace of protein gain and loss from plant organelles (Mol. Biol. Evol.)

Organelles, such as the chloroplast and nucleus, are structures with specific functions within a plant cell. It has been reported that many related, or homologous, proteins function in different organelles. However, how and why organellar proteins have diverged over evolutionary time remains unclear.…

A single light-responsive sizer can control multiple-fission cycles in Chlamydomonas (Curr. Biol.)

How do cells know when it is time to divide? Helt et al. explore this question using the single-celled alga Chlamydomonas. Unlike most animal and fungal cells, which tend to maintain a relatively consistent size by dividing after their size has doubled, Chlamydomonas cells can undergo several rounds…

The γ-tubulin complex protein GCP6 in crucial for spindle morphogenesis but not essential for microtubule reorganization in Arabidopsis (OA)

During cell division, cells require to form mitotic spindle and these mitotic spindles are basically newly formed microtubules. The formation of new microtubules depends on γ-tubulin. Along with 5 GPCs (γ-tubulin protein complex), γ-tubulin form γTuRC (γ-tubulin ring complex) and it facilitates…

The Arabidopsis receptor kinase IRK is polarized and represses specific cell division (Devel. Cell) ($)

Orientation of cell division decides daughter cell fate and is fundamentally important for tissue patterning and morphology. For instance, asymmetric cell division leads to the generation of new cell types; in contrast, symmetric division produces cells with similar identity in a proliferative manner.…

Review: The nanoscale organization of the plasma membrane and its importance in signaling – a proteolipid perspective (Plant Physiol)

Ample evidence shows that rather than being homogenous, plasma membrane lipids and proteins form distinct nanodomains. Jallais and Ott review plant plasma membrane nanodomains, and their important contributions to receptor-mediated signaling. The authors discuss methods for the study of membrane nanodomains,…

A SAC phosphoinositide phosphatase controls rice development via hydrolyzing PI4P and PI(4,5)P2 (Plant Physiol)

As their name suggests, phosphoinositide (PI) phosphatases remove phosphates from phosphoinositides (try saying that fast!). Because the phosphorylation status of a membrane-bound PI determines which proteins it interacts with, PI phosphatases and kinases contribute to membrane functions and dynamics.…

Plasma membrane domain patterning and self-reinforcing polarity in Arabidopsis (Devel. Cell)

Phosphoinositides (PIs) are specialized membrane lipids that contribute to membrane nanodomains, which affect protein localizations and vesicle trafficking. Previous studies have implicated PIs in the polar localization of auxin-transporter PIN proteins, and, in roots, the PIN-regulators PAX and BRX.…

Rapid single-step affinity purification of HA-tagged plant mitochondria (Plant Physiol)

In the middle part of the 20th century, cell biology leapt forward with the development of differential centrifugation methods for purifying subcellular compartments. However, these methods require large amounts of starting material and can suffer from contamination. Kuhnert et al. present a new simple…