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…

Trehalose metabolism in plants

Trehalose is a quantitatively important compatible solute and stress protectant in many organisms, including green algae and primitive plants. These functions have largely been replaced by sucrose in vascular plants, and trehalose metabolism has taken on new roles. Trehalose is a potential signal metabolite in plant interactions with pathogenic or…

Natural variation in the C-repeat binding factor cold response pathway correlates with local adaptat…

The natural range of Arabidopsis thaliana (Arabidopsis) encompasses geographical regions that have greatly differing local climates, including harshness of winter temperatures. A question thus raised is whether differences in freezing tolerance might contribute to local adaptation in Arabidopsis. Consistent with this possibility is that Arabidopsis…

The plant-specific protein FEHLSTART controls male meiotic entry, initializing meiotic synchronizati…

Meiosis marks the transition from the sporophyte to the gametophyte generation in the life cycle of flowering plants, and creates genetic variations through homologous recombination. In most flowering plants, meiosis is highly synchronized within each anther, which is significant for efficient fertilization. To date, little is known about the molec…

Arabidopsis thaliana isoprenyl diphosphate synthases produce the C25 intermediate geranylfarnesyl di…

  Isoprenyl diphosphate synthases (IDSs) catalyze some of the most basic steps in terpene biosynthesis by producing the prenyl diphosphate precursors of each of the various terpenoid classes. Most plants investigated have distinct enzymes that produce the short-chain all-trans (E) prenyl diphosphates geranyl diphosphate (GDP, C10), farnesyl diphosp…