Entries by Mary Williams

Convergence of sphingolipid desaturation across over 500 million years of plant evolution (Nature Plants)

If you remember your biochemistry, lipids that are saturated (without double bonds) pack more tightly and therefore have a higher melting temperature than those that are unsaturated, therefore bend and pack less tightly (think of margarine versus oil). Plants can modify their membranes in a temperature-responsive way to maintain a consistent degree of fluidity. Resemann […]

Plant Science Research Weekly: February 4, 2021

Review: Age is NOT just a number Aging of plants is marked by the growth and differentiation of individual organs, as well as transitions of the whole plant through developmental phases: juvenile, vegetative adult, and reproductive phase. In their recent review, Rankenberg et al. discuss how abiotic stress responses vary in plants with their age. […]

Plantae Presents Panel: Specialized Metabolites Part 2 (Metabolites and Defense)

We’re pleased to announce the next in our series of webinars that are drawn from contributed short videos, followed by a panel discussion. This week we’ll look at the topic of specialized metabolites, featuring scientists from the US, Israel, and India, moderated by Gitanjali Yadav. Plants are amazing chemists and have evolved a fantastic array […]

Review: Selective redox signaling shapes plant-pathogen interactions (Plant Physiol.)

Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are often presented as something of enigmas. They are damaging by-products of metabolism and stress, but also intentionally produced as a signal and defense response to pathogens. This excellent Update by Bleau and Spoel synthesizes new work towards understanding these apparently conflicting roles for ROS/RNS. First […]

Deeply altered genome architecture in the endoparasitic flowering plant Sapria himalayana Griff. (Curr. Biol.)

It’s one of those plants that gets noticed, so we’re excited to see the press associated with the genome sequence of the large endoparasitic plant Sapria himalayana. Everyone has seen pictures of this plant, which lives entirely underground except when it produces its large (20 cm diameter) blood red flowers. Cai et al. describe how […]

In vivo single-particle tracking of the aquaporin AtPIP2;1 in stomata reveals cell type-specific dynamics (Plant Physiol)

Bacteria can exploit the stomatal pores to gain entry into plant leaves. Previous studies have demonstrated that guard cells close in response to flagellin, an effect that is described as stomatal immunity. Like ABA-induced stomatal closure, this involves the movements of ions and water from the guard cells. Here, Cui et al. investigated the contribution […]

Plant Science Research Weekly: January 29, 2021

Review: Selective redox signaling shapes plant-pathogen interactions Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are often presented as something of enigmas. They are damaging by-products of metabolism and stress, but also intentionally produced as a signal and defense response to pathogens. This excellent Update by Bleau and Spoel synthesizes new work towards understanding […]

Plantae Presents Panel: Specialized Metabolites Part 1 (Medicines Flavors, Defense and More)

We’re pleased to announce the next in our series of webinars that are drawn from contributed short videos, followed by a panel discussion. This week we’ll look at the topic of specialized metabolites, featuring scientists from France, England, and Brazil, moderated by Gitanjali Yadav. Plants are amazing chemists and have evolved a fantastic array of […]

Review: Molecular mechanisms involved in functional macroevolution of plant transcription factors (New Phytol)

Transcription factors (TFs) are very important actors through which evolution can operate. In every organism and system studied, starting with the seminal work of Jacob and Monod, they’ve been shown to be potent regulatory proteins. Here, Romani and Moreno review the contributions of plant transcription factors in plant evolution. Genomic studies have revealed that key […]