Tag: Signals and Responses

Nitrogen dioxide (NO2) forms in plants under stress conditions, but little is known about its 
physiological functions. Using a variety of techniques, Mayer et al. (10.1104/pp.18.00704) have examined the effects of fumigating Arabidopsis with 10 ppm NO2 for 1 h, a treatment that does not cause 
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As gatekeepers between the outside world and the interior of the leaf, guard cells are extraordinarily sensitive to their environment. Closing keeps out pathogens and keeps in water vapor, but opening is needed to admit CO2. The web of interactions that control stomatal aperture are also correspondingly…

N-terminal acetylation is a common protein modification completed by ribosome-associated N-terminal acetyltransferases (NATs) or plastid-localized NATs. The recent discovery of the plastid-localized NATs upended the traditional model of static, co-translational imprinting of the plant proteome. These…

A key step in pathogen recognition occurs at the cell surface with the interaction between receptor-like kinases (pattern-recognition receptors) and their ligands. This event triggers a signal-transduction cascade that leads to the induction of defense responses. Mithoe and Menke review our current understanding…

RALF peptides were identified nearly 20 years ago, as small peptides that induce rapid alkalinisation of the culture medium when added to cell suspension cultures.  Previously, members of the receptor-like kinase  (RLK) family including FERONIA (FER) have been identified as RALF receptors.  A related…

Chen et.al. demonstrate that phosphatidic acid mitigates S-RNase signaling in pollen by stabilizing the actin cytoskeleton. Plant Cell (2018). https://doi.org/10.1105/tpc.18.00021 By Jianqing Chen, Peng Wang, Shaoling Zhang, and Juyou Wu Background: The success of sexual reproduction in flowering…

Zheng et al. reveal that plant endogenous peptides and their receptors initiate stomatal closure to prevent microbes’ entry, thus enhancing plant immunity. The Plant Cell (2018) https://doi.org/10.1105/tpc.17.00701. By Xiaojiang Zheng and Sheng Luan. Background: Unlike animals, plants can’t…

Wang et al. show that abscisic acid-inducible genes encode lipid degrading enzymes that release polyunsaturated fatty acids from chloroplast lipids as precursors for jasmonic acid production leading to biotic defenses in Arabidopsis. Plant Cell doi.org/10.1105/tpc.18.00250 By Kun Wang and Igor Houwat Background:…