Much of our understanding of plant defense response is built upon the responses that occur in leaves. Many pathogens colonize the phloem system, which is both nutrient-rich and provides an easy conduit for spreading through systemically through the plant body. These phloem-inhabiting prokaryotic pathogens are introduced and spread through phloem-feeding insects. Jiang et al. describe […]
Recently, several genes affecting rice architecture have been identified that may increase yields by increasing the number of grains formed, but as yet the genetic control of rice inflorescence architecture and organ identity is still being worked out. Zhuang et al. identified mutants of the NONSTOP GLUMES 1 (NSG1) gene (encoding a transcription factor) that […]
It’s been fifty years since the existence of brassinosteroids was shown, and about thirty since the awesome power of Arabidopsis genetics started to reveal the genes involved in its synthesis, perception and signaling. Nolan et al. review the highlights of brassinosteroid research and also more recent findings, particularly new insights into how it intersects with […]
The ASPB pubs department has a blog! It’s not surprising you didn’t know this #1 fact because this post is our first! But now that you know, you should check back here often to learn more about Plant Direct, Plant Physiology, and The Plant Cell. You will hear from our publications staff, our authors, our editors-in-chief, […]
Stroking leaves of the sensitive plant Mimosa pudica causes them to fold inwards, but when touched more aggressively the leaf petioles and petioles of distal untouched leaves collapse dramatically downwards (as seen in this video); the propagating electrical signal is called the slow wave potential. Kurenda et al. investigated the mechanistic underpinnings of this signal, […]
A new review by Petit et al. skillfully highlights the role of plasmodesmata at the interface between cell biology and whole-plant physiology. These tiny channels that connect plant cells determine what moves from cell-to-cell symplastically, so have roles in just about everything, from developmental patterning and timing to defense. Here the authors cover the dynamic […]
Plasmodesmata are tiny regulated channels that connect adjacent plant cells through which nutrients, signaling molecules and viruses can move. To try to resolve discrepancies between functional and structural studies, Deinum et al. have developed a model for plasmodesmatal permeability that predicts transport data. How do structural variations in plasmodesmata such as neck diameter and the […]
This short Primer by Strullu-Derrien et al. introduces the amazing early vascular plant fossils from the Rhynie chert. The fossils’ high level of detail is a consequence of their being embedded in a glass-like silica matrix, possibly derived from hydrothermal springs. The fossils are approximately 407 million years old, and derive from the earliest stages […]
Plants are photosynthetic autotrophs, meaning they use light energy to feed themselves, with carbon dioxide as a carbon source. Heterotrophs like E. coli require organic carbon. Here, Gleizer et al. have rewired the metabolism of E. coli to make it into a (non-photosynthetic) autotroph, meaning it can build organic molecules using only CO2 as a […]