Entries by Nancy Eckardt

Bridging the Gap Between Pathogen Detection and Defense Activation

Bi et al. provide a link between immune receptors and MAPK cascades. Plant Cell (2018) https://doi.org/10.1105/tpc.17.00981.   By G. Bi and J.-M. Zhou Background: Plants use numerous immune receptors localized at the cell surface to detect invading pathogens. These receptors send a warning signal into the cell that triggers defenses to fend off pathogens. Much […]

Chloroplast Biogenesis in Germinating Seeds: A Multi-Dimensional Approach

Zizhen et al. perform electron tomography and correlative gene expression analyses of thylakoid assembly in greening Arabidopsis cotyledons Plant Cell (2018) https://doi.org/10.1105/tpc.17.00972 By Byung-Ho Kang Background: The chloroplast produces carbohydrates and molecular oxygen from water, carbon dioxide, and sunlight. The protein complexes that carry out photosynthesis are located in an elaborate and continuous network of […]

A New Epigenetic Switch Regulating Histone Modification

Mateo-Bonmatí et al. have found novel components of the Arabidopsis epigenetic machinery. Plant Cell (2018). https://doi.org/10.1105/tpc.18.00300  By Eduardo Mateo-Bonmatí, Lucía Juan-Vicente, Riad Nadi, and José Luis Micol Background: In multicellular organisms, most cells contain the same genetic information. However, the genes that are active or inactive differ among cells of different tissues, organs, etc. The mechanisms […]

Metabolic Fate of Modified Nucleotides after RNA Turnover, an Overlooked Issue in RNA Modification

Chen et al. reveal a multilayer molecular protection system functioning in Arabidopsis and human cells https://doi.org/10.1105/tpc.18.00236 By Mingjia Chen and Claus-Peter Witte Background: RNA possesses over 100 distinct posttranscriptional modifications in eukaryotic species. N6-methyladenosine (m6A) is the most abundant internal modification in messenger RNAs. It modulates mRNA characteristics influencing RNA processing, translation, and RNA decay. […]

Sorbitol Modulates Apple Resistance to Alternaria

Meng et al. show that sorbitol acts as a signal regulating resistance to the fungal pathogen Alternaria alternata in apple.Plant Cell https://doi.org/10.1105/tpc.18.00231 By Dong Meng, B. Gillian Turgeon and Lailiang Cheng Background: Sugars produced by photosynthesis fuel plant growth and development, but may also play a role in plant-pathogen interactions, acting as a carbon source […]

Evolution of Gene Regulation During Domestication

Liu, et al. examine how wound response and its control mechanism differs between domesticated and wild tomato. Plant Cell https://doi.org/10.1105/tpc.18.00194. By Ming-Jung Liu and Shin-­Han Shiu Background: Two related species accumulate differences between each other over time. If one of the species is domesticated due to human selection of desirable traits, the domesticated species experiences […]

Dynamic Alternative Splicing Response to Cold

Calixto et al. demonstrate a rapid wave of alternative splicing as temperatures drop. The Plant Cell (2018) https://doi.org/10.1105/tpc.18.00177. By Cristiane Calixto and John Brown Background: Alternative splicing (AS) allows a single gene to produce more than one transcript, which can affect protein production and function. AS is common and essential for eukaryotes to control gene […]

Old Gene, New Function

Xie et al. discover an EPSP synthase gene involved in the transcriptional regulation of the phenylpropanoid pathway in Populus trichocarpa The Plant Cell (2018). https://doi.org/10.1105/tpc.18.00168. By Meng Xie, Wellington Mechuro, Jin-Gui Chen, and Gerald A. Tuskan Background: 5-enolpyruvylshikimate 3-phosphate (EPSP) synthase is an enzyme existing in plants and microorganisms. EPSP synthase catalyzes the sixth reaction […]

Tectonic Movements Across the Tomato Genome

Corem et al. demonstrate a switch in DNA methylation patterns across the tomato genome. The Plant Cell (2018). https://doi.org/10.1105/tpc.18.00167. By Shira Corem, Tzahi Arazi and Nicolas Bouché Background: Crop genomes are covered by transposons, which are DNA sequences that can jump from one place to another. Transposon mobility must be tightly controlled to avoid deleterious […]