Entries by Linda Palmer

The common symbiosis pathway: More common than we thought?

Cope et al. show how lipochitooligosaccharides produced by the mycorrhizal fungus Laccaria bicolor enhance colonization of Populus roots  Plant Cell https://doi.org/10.1105/tpc.18.00676 By Kevin R. Cope, University of Wisconsin–Madison (currently at S. Dakota State Univ.) and Jean-Michel Ané, University of Wisconsin–Madison Background: Most land plants form mutually beneficial associations with arbuscular mycorrhizal fungi. These fungi develop […]

Different partners, different roles!

You et al. show that LEUNIG_HOMOLOG Facilitates Jaresponses via interactions with the histone acetyltransferase HAC1 and the Mediator complex coactivator MED25.   Plant Cell https://doi.org/10.1105/tpc.19.00115 By Yanrong You and Chuanyou Li, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China Background: Jasmonate (JA) is a lipid-derived plant hormone that regulates plant defense […]

UMP pyrophosphorylase-a moonlighting protein with essential functions in chloroplast development and photosynthesis establishment

Pyrimidine nucleotides (e.g., dCTP, dTTP, UTP, and CTP) are essential building blocks for DNA and RNA synthesis in all organisms. In plants, sucrose and cell wall polymer synthesis depend on pyrimidine nucleotide-derived substrates, such as UDP-glucose, and important classes of membrane lipids are made using CDP-activated substrates. In addition to de novo synthesis pathways, pyrimidine […]

The “Ins and Outs” of ER–Chloroplast Lipid Trafficking

Karki et al. revisit the long-standing question of how and where lipid trafficking occurs during galactolipid synthesis. They report evidence for metabolically distinct pools of phosphatidylcholine, suggesting an underlying spatial organization in the ER–chloroplast metabolic interactions. Plant Cell https://doi.org/10.1105/tpc.19.00121 By Philip Bates Background: Chloroplast membranes composed predominantly from galactolipids are critical for the organization and […]

XAT catalyzes carotenoid esterification in wheat

Watkins et al. have identified XAT as the enzyme responsible for esterification and subsequent  stabilization of lutein in wheat grains. Plant Cell https://doi.org/10.1105/tpc.09.00272 By Jacinta Watkinsa, Barry Pogsona and Diane Matherb. aARC Centre of Excellence for Plant Energy Biology, Research School of Biology, Australian National University, Australia bSchool of Agriculture, Food and Wine, Waite Research […]

Casparian Strip Formation in Rice

Wang et al. identify a protein that mediates Casparian strip formation at the endodermis in rice roots. Plant Cell https://doi.org/10.1105/tpc.19.000296 By Jian Feng Maa and Jixing Xiab aInstitute of Plant Science and Resource, Okayama University, Japan bCollege of Life Science and Technology, Guangxi University, China Background: Plants absorb minerals from the soil to support growth and […]

The genome history of camelina emerges from the shadows

Mandáková et. al. explore the origin of an ancient oilseed crop. https://doi.org/10.1105/tpc.19.00366 Background: Camelina (Camelina sativa; gold of pleasure or false flax) is an ancient oilseed crop grown in Europe as early as 4000 BC. Gold of pleasure was largely forgotten as a crop, being replaced by oilseed rape, and recently re-discovered for its unique […]

Regulation of Florigen Trafficking

Liu et al. elucidate the regulation of FT movement by a MCTP-SNARE complex. Plant Cell https://doi.org/10.1105/tpc.18.00960   By Lu Liu and Hao Yu, Department of Biological Sciences and Temasek Life Sciences Laboratory, National University of Singapore, Singapore  Background: The transition to flowering is the most dramatic phase change in flowering plants, which is crucial for […]

Comparative Cell-Specific DNaseI-Seq Reveals Transcription Factor Binding Landscape in C3 and C4 Grasses

Nearly every aspect of growth, morphogenesis, physiology, and stress response is influenced by cell/tissue-type specific gene expression. Transcription factors (TFs) recognize cis-regulatory elements and signal transcription machinery for gene regulation, and the interaction between TFs and their target genes creates spatiotemporal patterns of gene expression. Accurate functional annotation of these regulatory sites is essential for […]