Entries by Linda Palmer

Small Cells, Big Impact: RNA-Protein Complexes in a Cyanobacterium

Riediger et al. investigate the RNA-protein complexome of a photosynthetic cyanobacterium. The Plant Cell. https://bit.ly/3njpBn4 By Matthias Riediger and Wolfgang R. Hess Background: Cyanobacteria are a unique group of bacteria with the ability to perform plant-like photosynthesis. Like their larger cousins, land plants and eukaryotic algae, they only require sunlight, inorganic nutrients and fairly stable […]

Transport-coupled ubiquitination of BOR1

Yoshinari et al. demonstrate that boron-dependent poly-ubiquitination and subsequent degradation of BOR1 is coupled with its boron transport activity. Plant Cell https://bit.ly/2JYEooF By Akira Yoshinari Background: Abundance and activity of nutrient transporters are continuously tuned to both maintain nutrient availability and avoid over-accumulation of nutrients to a toxic level. Boron (B) is an essential element […]

Gene expression signatures during leaf development

Martinez et al. use laser capture microdissection and transcriptomic sequencing to explore how gene expression patterns regulate early morphogenesis of the compound tomato leaf. https://bit.ly/3nehiZu  By Ciera Martinez, University of California, Berkeley Neelima Sinha, University of California, Davis  Background: Leaf development involves cell division, expansion, and cellular specialization in specific positions along the middle to […]

The Complex Process of Plant Innate Immunity

Liu et al. demonstrate that EIJ1 acts as a key repressor of plant immunity. Plant Cell. https://bit.ly/37MF1tg By Hailun Liu, Yuge Li and Xingliang Hou, South China Botanical Garden, Chinese Academy of Sciences Background: Plants have evolved a complicated network to modulate the immune response. To defend themselves against pathogens, plants employ two main regulatory […]

How Plant Cells Shape Spindles during Division

Herrmann et al. uncover the role of KINESIN-12E in the rapid alignment of chromosomes during cell division. The Plant Cell (2020) https://bit.ly/3lCfIzf  By Arvid Herrmann Howards Hughes Medical Institute at University of Texas at Austin, Sabine Müller, Center for Plant Molecular Biology, University of Tübingen  Background: Cell division is the process by which a parent […]

Hold Me, Fold Me…or Not!

It’s not just human relationships that may require a chaperone to prevent inappropriate interactions. Numerous proteins in organisms from Escherichia coli to us, especially hydrophobic membrane proteins, also require chaperones in aqueous environments to prevent inappropriate interactions such as aggregation or improper folding (Gruber and Horovitz, 2016). Whereas most plasma membrane proteins in E. coli […]

Repressor of Endosperm Formation in Rice

Tonosaki et al. explore how the Polycomb Repressive Complex 2 component EMBRYONIC FLOWER2a represses rice endosperm development both before and after fertilization. The Plant Cell (2020) https://bit.ly/33DQdqW By Kaoru Tonosaki and Tetsu Kinoshita Iwate University and Yokohama City University   Background: The endosperm is a tissue that provides nourishment for embryo development in seeds and […]

I Get by With a Little Help From a Friend

Klasek, Inoue, and Theg show how the chloroplast chaperonin Cpn60 binds Plastidic type I signal peptidase 1 in the chloroplast stroma and delivers it to the cpSecI translocon for targeting to the thylakoid membrane. Plant Cell https://doi.org/10.1105/tpc.20.00309 By Laura Klasek, University of California, Davis Background: As a plant grows, its chloroplasts construct their internal thylakoid […]

Changing the Shape of the Apex via Cell-size Regulation

Wang et al. demonstrate that Arabidopsis SAUR17 promotes apical hook development and closed cotyledons in the dark by protecting the cell-expansion inhibitor PP2C-D1. The Plant Cell (2020) https://doi.org/10.1105/tpc.20.00283   By Jiajun Wang, Ning Sun, Fangfang Zhang, Renbo Yu, Haodong Chen, Xing Wang Deng, and Ning Wei  Background: Many land plants start their lifecycles in the […]