Nitrogen (N), phosphorus (P), and potassium (K) are the three macronutrients required in highest amounts for plant growth. N is abundant in the atmosphere, therefore plentiful if we overlook the energetic costs of converting N2 to usable form. By contrast, K and P are present in limited amounts in the Earth’s crust, and their extraction […]
Recently, we’ve been profiling first authors of Plant Cell papers that are selected for In Brief summaries. Here are the first-author profiles from the December issue of The Plant Cell. Yao-Pin Lin, featured author of Identification of Chlorophyll Dephytylase Involved in Chlorophyll Turnover in Arabidopsis Current Position: Postdoctoral fellow in Agricultural Biotechnology Research Center, Academia […]
As a consequence of their ability to fix nitrogen in symbiosis with bacteria, legumes make key contributions to ecosystems and provide protein-rich foods for humans and other animals. Recent years have uncovered the nature of the signals involved in the cross-kingdom dialogues that occur between plant and bacteria and the systemic signals that optimize nodule […]
Tansy plants (Tanacetum vulgare L.) have diverse ethnobotanical uses including that of insect repellent, as a consequence of their production of volatile terpenes. Clancy et al. investigated the diversity of these emitted terpenes, and how they affect colonization by aphids and the ants that tend them in plants from a single field site. The authors […]
It is widely stated that domestication has contributed to a decrease in plant resistance to herbivory, but to what extent is this true? In a contribution to a special issue on “Human influences on evolution”, Whitehead et al. describe results of their meta-analysis. Although their data show a consistent reduction in herbivore resistance associated with […]
Although most flowering plants produce flowers with male and female parts, there are exceptions which are broadly classified as dioecious (two houses; each individual is male or female, usually associated with the presence of a sex chromosome) and monoecious (one house, separate male and female flowers in a single individual). Diploid persimmon plants are dioecious; […]
Three PNAS papers explore DNA methylation and/or small RNAs in plant reproductive development. In angiosperms, sexual reproduction is accompanied by DNA demethylation in certain tissues, particularly those that have a nutritive or supporting role. Park et al. (10.1073/pnas.1619047114) show that in the endosperm this demethylation occurs on the chromosomes inherited from the central cell and […]
Trehalose-6-phosphate (T6P) is a sugar signaling molecule that regulates how plants allocate and use sucrose, which in turn affects stress resilience and yields. Griffiths et al. designed a plant-permeable, photo-activated T6P analogue that is converted to T6P in planta. Spraying this compound onto plants (Arabidopsis and wheat) increases stress resilience and yields. These results suggest […]
In this entertaining Opinion article written for the 150th anniversary of Mendel’s seminal work, Bernardo reviews “bandwagons” that have come and gone in plant breeding. Early bandwagons such as induced polyploidy are discussed, as well as more recent trends such as trangenics, molecular markers and QTL mapping, association mapping, and genomewide selection. He also summarizes […]