Recent Posts

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,…

ABCB21 regulates auxin levels in cotyledons, pericycle and leaves (Frontiers Plant Science)

Auxin activity is maintained through regulated biosynthesis, metabolism and transport. In this paper Jenness et al. characterized the physiological significance of a known IAA transporter, ABCB21 (ATP BINDING CASSETTE TRANSPORTER subfamily B member 21) in Arabidopsis. ABCB21 transports shoot derived…

Pinstatic acid promoters auxin transport by inhibiting PIN internalization (Plant Physiol)

Auxin transport regulated by directional transporters such as PIN (PIN-FORMED) proteins ensures maintenance of proper auxin levels for growth and development. Plants modulate auxin flow by regulating the localization of PIN through exocytosis and endocytosis allowing recycling of PIN protein within a…

A simple arsenic detoxification strategy in the fern Pteris vittata ($) (Curr Biol)

Arsenic contamination is a growing human health threat. The fern Pteris vittata demonstrates a remarkable capacity to accumulate and sequester high levels of the toxic heavy metal arsenic from contaminated environments. Cai et al. used an ‘omics’-guided approach to identify and characterize the molecular…

Identification of transcription factors regulating senescence in wheat through gene regulatory network modelling (Plant Physiol)

Like other seed crops, wheat yields depend in part on the efficiency with which nutrients stored in leaves are mobilized into the developing seeds. This depends on the several processes from macromolecule breakdown to transport, as well as the timing of leaf senescence. Borrill et al. used RNA analysis…

NRT1.1B is associated with root microbiota composition and nitrogen use in rice ($) (Nature Biotechnol)

Availability of nitrogen has always been a limiting factor for rice production. Different soil inhabitants and root-associated bacterial populations are involved in making nitrogen available to plants in organic as well as in inorganic forms. However, plant absorption of nitrogen is selective and affects…

Review: Functional status of xylem through time ($) (Annu Rev Plant Biol)

If you haven’t been paying attention, you may have missed the great advances that have been taking place in xylem research recently. This excellent review by Brodersen et al. is your chance to catch up. Like all aspects of plant science, new tools and techniques have provided tremendous new insights…