Recent Posts

Systematic characterization of gene function in the photosynthetic alga Chlamydomonas reinhardtii (Nature Genetics)

The green alga Chlamydomonas reinhardtii is a useful model system to study photosynthetic organisms, as this single-celled species allows for more high-throughput methods than in multicellular plants, and many conserved pathways of interest can be identified. Here, Fauser et al. demonstrate the value…

CLAVATA3/ESR-related 2 peptides regulate root sucrose level and root/shoot ratio in Arabidopsis (Plant Physiol)

Roots are dependent on shoot-produced sucrose for energy associated with growth and nutrient uptake. The CLAVATA3/ESR2-related peptides (CLEs) regulate several aspects of plant growth. Okamoto et al. present evidence on the involvement of CLEs in conveying the root sucrose demand to the shoot.  Carbon…

Robust transcriptional indicators of immune cell death revealed by spatio-temporal transcriptome analyses (Mol Plant)

Many plants trigger a form of cell death, known as the hypersensitive response (HR), immediately upon pathogen recognition. To minimize damage to the plant, this cell death must be highly localized to the site of attack, while more distal cells survive and activate other immune responses. However, the…

Spermine inhibits PAMP ROS and Ca2+ burst and reshapes the transcriptional landscape of PAMP-triggered immunity in Arabidopsis (bioRxiv)

Polyamines are endogenous cationic amines that have been shown to regulate a plethora of biological processes in plants, including the hypersensitive response. However, the importance of polyamines in other aspects of plant immunity has not yet been fully explored. In this new preprint, Zhang and colleagues…

State of ex situ conservation of landrace groups of 25 major crops (Nature Plants)

Landraces are local cultivars developed by traditional agricultural methods. Landraces not only represent an essential genetic resource for modern crop breeding but are also key to understand crops’ domestication processes. Thus, it is crucial to collect landraces for genebank conservation since demographic…

Review: Protein phosphorylation “toggle switch” for plant iron balance (Trends Plant Sci)

Protein phosphorylation and dephosphorylation act as a switch regulating a multitude of protein properties, be it their activity, interaction with other proteins, stability, or even cellular localization. This review by Li et al. describs the many ways that protein phosphorylation contributes to iron…

A plant-specific module for homologous recombination repair (PNAS)

Damage to DNA occurs through exposure to environmental stresses in animal and plant kingdoms alike. While the former groups are relatively well explored when it comes to DNA damage response (DDR) mechanisms, plant-related knowledge lags behind. A recent study by Wang et al. revealed a unique plant DDR…

Xylan-based nanocompartments orchestrate plant vessel wall patterning (Nature Plants)

Xylem vessels have a distinct secondary cell wall (SCW) formation, where the metaxylem stage contains a characteristic pit pattern. The hemicellulose xylan is an important component of the SCW, functioning as a crosslinking polymer that coats cellulose microfibrils and interacts with other SCW components.…

Cytokinin–CLAVATA cross-talk is an ancient mechanism regulating shoot meristem homeostasis in land plants (PNAS)

The shoot apical meristem (SAM) maintains a small pool of pluripotent stem cells, which are the source of all above-ground plant tissues. In Arabidopsis thaliana, CLAVATA3 (CLV3), CLAVATA1(CLV1) and RECEPTOR-LIKE PROTEIN KINASE2 (RPK2) repress WUSCHEL (WUS) expression. WUS induces CLV3, forming a local…