A systems biology approach identifies new regulators of poplar root development under low nitrogen

In Populus, low nitrogen (LN) elicits rapid and vigorous lateral root (LR) proliferation, which is closely mirrored by corresponding transcriptomic changes. Using transcriptomic data, we built a genetic network encompassing a large proportion of the differentially regulated transcriptome. The network is organized in a hierarchical fashion, centered…

The wheat transcription factor TaGAMyb recruits histone acetyltransferase and activates the expressi…

Glutenin proteins in wheat (Triticum aestivum L.) flour confer unique viscoelastic properties to dough products and, therefore, the concentration and composition of the glutenin proteins determine its end-use value. However, the mechanisms governing the glutenin gene expression remain elusive. In this study, we report that wheat TaGAMyb activates t…

Glutathione plays an essential role in nitric oxide-mediated iron-deficiency signaling and iron-defi…

Iron (Fe) deficiency is a common agricultural problem that affects both the productivity and nutritional quality of plants. Thus, identifying the key factors involved in the tolerance of Fe deficiency is important. In the present study, the zir1 mutant, which is glutathione deficient, was found to be more sensitive to Fe deficiency than the wild ty…

Jasmonic acid promotes degreening via MYC2/3/4- and ANAC019/055/072-mediated regulation of major chl…

Degreening caused by rapid chlorophyll (Chl) degradation is a characteristic event during green organ senescence or maturation. Pheophorbide a oxygenase gene (PAO) encodes a key enzyme of Chl degradation, yet its transcriptional regulation remains largely unknown. Using yeast one-hybrid screening, coupled with in vitro and in vivo assays, we reveal…

Rubber from dandelions - Scientists identify key components in the formation of rubber

Two protein families required for rubber biosynthesis in Taraxacum brevicorniculatum have recently been characterized, namely the cis-prenyltransferases and the small rubber particle proteins. The latter were shown to be the most abundant proteins on rubber particles, where rubber biosynthesis takes place. Here we identified a protein designated T.…

Research finds salt tolerance gene in soybean

The identification of genes that improve the salt tolerance of crops is essential for the effective utilization of saline soils for agriculture. Here, we use fine mapping in a soybean population derived from the commercial cultivars Tiefeng 8 and 85–140 to identify GmSALT3, a dominant gene associated with limiting the accumulation of sodium ions in…

The Sec2 translocase of the chloroplast inner envelope contains a unique and dedicated SECE2 compone…

Biogenesis of chloroplasts involves a series of protein trafficking events. Nuclear-encoded proteins are imported into the organelle, and then trafficked to various chloroplast locations by systems that are directly homologous to bacterial systems. Although the thylakoid-based systems have been studied extensively, much less is known about the syst…

Enhancement of oxidative and drought tolerance in Arabidopsis by overaccumulation of antioxidant fla…

The notion that plants use specialized metabolism to protect against environmental stresses needs to be experimentally proven by addressing the question of whether stress tolerance by specialized metabolism is directly due to metabolites such as flavonoids. We report that flavonoids with radical scavenging activity mitigate against oxidative and dr…