Recent Posts

Review: Targeting root ion uptake kinetics to increase plant productivity and nutrient use efficiency (Plant Physiol.)

Roots anchor plants and take up water, but one of their most important and complex functions is to bring a large number of different essential nutrients into the plant. Root architecture affects and is affected by nutrient uptake, but ultimately uptake is largely controlled by membrane-bound ion transporters.…

Over‐accumulation of abscisic acid in transgenic tomato plants increases the risk of hydraulic failure (Plant Cell Environ.)

ABA enhances stomatal closure and so decreases transpiration. Several studies have shown that increasing ABA levels can increase water-use efficiency, so this strategy has been investigated with the goal of obtaining “more crop per drop”. Lamarque et al. investigated physiological and hydraulic effects…

ATP binding cassette proteins ABCG37 and ABCG33 are required for potassium-independent cesium uptake in Arabidopsis roots (bioRxiv)

Potassium is one of the major nutrients for plant growth and development. Plants have a well-studied potassium uptake system mediated by transporters and ion channels. Unfortunately, due to the chemical similarity of potassium and cesium, which is toxic for plant growth, cesium is able to to get into…

Exploring the hydraulic failure hypothesis of esca leaf symptom formation (Plant Phys)

Esca is a leaf scorch (necrosis) disease of grapevine that causes tremendous yield losses. Bortolami et al. have investigated the etiology of this condition, which is known to be a consequence of fungal pathogen infection. But how exactly does the fungal infection contribute to the observed symptoms?…

The QKY-SYP121 complex controls long-distance florigen movement ($) (Plant Cell)

In Arabidopsis thaliana, changes in day-length (photoperiod) activate the expression and transport of phloem-mobile florigen (FT, FLOWERING LOCUS T) to the shoot apical meristem to trigger the transition to flowering. While the role of FT as a long-distance signal is well-established, the underlying…

The N-terminus of AtMSL10 interacts with its own C- terminus (bioRxiv)

Plants are equipped with multiple mechanosensitive (MS) ion channels that respond to external and internal mechanical perturbations. When one of these, AtMSL10, is overexpressed it leads to a cell death phenotype, although there is no discernible phenotype associated with its loss of function. Recently…

Manganese deficiency affects root endodermal suberization and ion homeostasis (Plant Physiol.)

Manganese (Mn) is an essential plant nutrient necessary for multiple plant process such as photosynthesis. Mn deficiency has a significant impact on crop production particularly in cereals including barley (Hordeum vulgare L.). Chen et al. identified how Mn deficiency alters suberin deposition in the …

Plant cell-surface GIPC sphingolipids sense salt to trigger Ca2+ influx (Nature)

Soil salinity is one of the most important global problems that negatively affect crop productivity. Jiang et al designed a forward genetic screen in A. thaliana to identify the specific ionic response triggered by salt stress. They mutagenized plants expressing the genetically encoded Ca2+ sensor aequorin,…

TRANSPORTER OF IBA1 links auxin and cytokinin to influence root architecture ($) (Devel. Cell)

Indole-3-butyric acid (IBA) is the precursor of the hormone auxin and it controls the formation of lateral roots. Evidence suggests that IBA is converted to IAA, endogenous active auxin. The major study material to distinguish between IBA and IAA was highlighted by the IBA-specific efflux carrier ABCG36/PDR8/PEN3,…