Making mucilage: A key transcriptional regulatory module regulating rhamnogalacturonan I biosynthesis
The Plant Cell: In a NutshellXu et al. identify a key transcriptional regulatory module involved in biosynthesis of the pectic polysaccharide rhamnogalacturonan I in the mucilage surrounding the Arabidopsis seed. https://doi.org/10.1093/plcell/koac011
Background: Pectin is a complex cell wall polysaccharide that plays important…
A chromatin remodeler: its role as transcriptional repressor in plant immunity
The Plant Cell: In a NutshellKang et al. (2022) show that Arabidopsis CHROMATIN REMODELING 19 represses transcription and functions in plant defenses against pathogens. https://doi.org/10.1093/plcell/koab318
by Huijia Kang and Yan Zhu, School of Life Sciences, Fudan University.
Background: Plants induce defenses in response…
Microalgae concentrate CO2 to ameliorate oxidative stress
The Plant Cell: In a NutshellChoi et al. report that the Chlamydomonas bZIP transcription factor BLZ8 induces the carbon-concentrating mechanism to provide an electron sink pathway, reducing reactive oxygen species production under oxidative stress conditions. Plant Cell. https://doi.org/10.1093/plcell/koab293
By Bae Young Choi,…
18S rRNA processing factors in maize
The Plant Cell: In a NutshellWang et al. find an RNA 3’-terminal phosphate cyclase-like protein that participates in processing the 18S ribosomal RNA in maize. https://doi.org/10.1093/plcell/koac052
by Tao Wang and Jun Yang
The National Engineering Laboratory of Crop Resistance Breeding, School of Life Sciences, Anhui Agricultural…
Lower oil content leads to wrinkled, immature seeds
The Plant Cell: In a NutshellHuang et al. elucidate the relationship between fatty acid biosynthesis and seed maturation in Arabidopsis.
By Ruihua Huang and Shengchun Zhang
Background: Storage substances such as starch, protein, and oil in crop seeds are major sources of food for humans. These substances mainly accumulate…
COP1 promotes abscisic acid signaling in the dark
The Plant Cell: In a NutshellPeng et al. discover that COP1, a central repressor of seedling photomorphogenic development, positively regulates ABA signal transduction during Arabidopsis seedling growth in darkness by mediating ABA-induced ABI5 accumulation.
By Jing Peng and Jigang Li
Background: The phytohormone abscisic…
A Contextualized Catalog: Proteomic analyses of plant CCVs
The Plant Cell: In a NutshellDahhan et al. explore the clathrin-coated vesicle proteome in Arabidopsis
By Dana A. Dahhan and Sebastian Y. Bednarek, Dept. of Biochemistry, UW-Madison
Background: Trafficking of vacuolar and plasma membrane proteins and other macromolecules is essential for plant development, nutrient uptake,…
Homospermidine oxidase catalyzes the formation of a bicyclic ring system as part of the chemical defense of plants
The Plant Cell: In a NutshellZakaria and Stegemann et al. identify and characterize an enzyme involved in pyrrolizidine alkaloid biosynthesis in a member of the borage family.
Mahmoud M. Zakariaa,b, Thomas Stegemanna,b, Dietrich Obera
a Botanical Institute and Botanic Gardens, Kiel University, Kiel, Germany
b Department…
Short-term memory of warm daytime in Arabidopsis
The Plant Cell: In a NutshellMurcia et al. discover how plants store information about daytime temperatures to control stem growth during the night.
By Germán Murcia, Cristina Nieto, Romina Sellaro, Salomé Prat, and Jorge J. Casal
Background: Plants increase their stature in response to warm temperatures by enhancing stem…