Cyanobacterial bloom mitigation by sanguinarine and its effects on aquatic microbial community structure.

Sanguinarine has strong inhibitory effects against the cyanobacterium Microcystis aeruginosa. However, previous studies were mainly limited to laboratory tests. The efficacy of sanguinarine for mitigation of cyanobacterial blooms under field conditions, and its effects on aquatic microbial community structure remain unknown.

Balance between nitrogen use efficiency and cadmium tolerance in Brassica napus and Arabidopsis thaliana.

The transmembrane transport of NO and Cd into plant cell vacuoles relies on the energy from their tonoplast proton pumps, V-ATPase and V-PPase. If the activity of these pumps is reduced, it results in less NO and Cd being transported into the vacuoles, which contributes to better nitrogen use efficiency (NUE) and lower Cd tolerance in plants. The physiological mechanisms that regulate the balance between NUE and Cd tolerance remain unknown.

NRT1.1-Related NH Toxicity Is Associated with a Disturbed Balance between NH Uptake and Assimilation.

A high concentration of ammonium (NH ) as the sole source of nitrogen in the growth medium often is toxic to plants. The nitrate transporter NRT1.1 is involved in mediating the effects of NH toxicity; however, the mechanism remains undefined.

Nitrogen Use Efficiency Is Mediated by Vacuolar Nitrate Sequestration Capacity in Roots of Brassica napus.

Enhancing nitrogen use efficiency (NUE) in crop plants is an important breeding target to reduce excessive use of chemical fertilizers, with substantial benefits to farmers and the environment. In Arabidopsis (Arabidopsis thaliana), allocation of more NO3 (-) to shoots was associated with higher NUE; however, the commonality of this process across plant species have not been sufficiently studied. Two Brassica napus genotypes were identified with high and low NUE.

Potential for control of harmful cyanobacterial blooms using biologically derived substances: problems and prospects.

Water blooms of cyanobacteria have posed a worldwide environmental threat and a human health hazard in recent decades. Many biologically derived (but non-antibiotic) bioactive substances are known to inhibit the growth of aquatic bloom-forming cyanobacteria. Some of these biologically derived substances (BDSs) have no or low toxicity to aquatic animals and humans.