Recent Posts

Unregulated Sphingolipid Biosynthesis in Arabidopsis ORM Mutants

Gonzalez Solis et al. describe the metabolic, cellular, and physiological consequences of the complete loss of regulation of sphingolipid biosynthesis. Plant Cell https://doi.org/10.1105/tpc.20.00015  By Ariadna Gonzalez Solis and Edgar B. Cahoon  Background: Glycosphingolipids are molecules…

Cellular plasticity in protein re-balancing

Rolletschek et al. examine the role of cellular plasticity in oil-protein balancing. Plant Cell https://doi.org/10.1105/tpc.19.00879 By Hardy Rolletschek and Ljudmilla Borisjuk Leibniz Inst Plant Genet & Crop Plant Res (IPK) Gatersleben, Germany Background: Seeds of some crops like…

The Way Out: A Transcriptionally Unique Group of Endosperm Cells Implicated in Nutrient Export to the Embryo

Successful development of the maize (Zea mays) kernel requires proper nutrient transport and signaling among its genetically distinct components: the embryo that gives rise to the next generation, the endosperm that nourishes the embryo, and the maternal tissues that surround the embryo and the endosperm…

Embryonic photosynthesis affects post-germination plant growth (Plant Physiol.)

Angiosperm seeds develop within maternal tissues, yet in some species including Arabidopsis the developing embryos carry out photosynthesis. In Arabidopsis, this is transitory, and the embryonic chloroplasts lose chlorophyll and dedifferentiate into eoplasts as the seed matures. Sela et al. set out to…

VP1 regulates intra-kernel protein reallocation (Plant Cell)

Maize kernels have a triploid endosperm and a diploid embryo. Storage reserves move from the endosperm to the embryo as it grows. Mutants have been identified with abnormal embryos but normal endosperms, although usually a defective endosperm prevents normal embryo formation. Here Zheng and Li et al.…

Small RNA Pathway Acting in the Father Controls Seed Abortion

Satyaki and Mary Gehring uncover the mechanism underlying interploidy seed abortion, challenging previous models of dosage sensitivity in endosperm. Plant Cell https://doi.org/10.1105/tpc.19.00047 By PRV Satyaki (Whitehead Institute for Biomedical Research) and Mary Gehring (Whitehead Institute for…

New player in plant DNA damage repair and seed development

Diaz et al. characterize NSE4A subunit of SMC5/6 complex and demonstrate that it is important for maintaining genome stability and normal seed development. The Plant Cell (2019).  https://doi.org/10.1105/tpc.18.00043 By M. Díaz, P. Pecinkova, A. Nowicka, C. Baroux, T. Sakamoto, P.Y. Gandha, H. Jeřábková,…

High-temporal-resolution Transcriptome Landscape of Early Maize Seed Development

https://doi.org/10.1105/tpc.18.00961  Yi et al. describe a high-temporal-resolution transcriptome landscape of early maize seed development.  By Fei Yi, Wei Gu, and Jinsheng Lai, State Key Laboratory of Agrobiotechnology and National Maize Improvement Center, Department of Plant Genetics and…