Target-site and non-target-site resistance mechanisms confer mesosulfuron-methyl resistance in Alopecurus aequalis.

Background: Shortawn foxtail (Alopecurus aequalis Sobol.) is a noxious weed in China. The resistance of A.

A glutathione S-transferase and a cytochrome P450 may confer cyhalofop-butyl resistance in Leptochloa chinensis (L.) Nees.

Background: Leptochloa chinensis (L.) Nees is a troublesome weed across China in rice fields, and a suspected L. chinensis resistant population (R) that has survived the recommended field dose of cyhalofop-butyl was collected in a rice field of Hunan Province, China.

Comparative analysis of fungal communities between herbicide-resistant and -susceptible .

Introduction: is a grass species invading Chinese canola and wheat fields. An KMN-R population surviving mesosulfuron-methyl treatment with recommended rates was acquired from wheatland. Here, we aimed to confirm the resistance profiles of KMN-R to acetolactate synthetase (ALS) inhibiting herbicides and explore the possible resistance mechanisms to mesosulfuron-methyl in this weed population.

Electrical Conductivity of Copper Hexamers Tuned by their Ground-State Valences.

A new design concept has been realized for the construction of molecular conductors, whereby the building unit contains a core reservoir of carriers made up of metal ions with controllable valence states and shelled by flat organic ligands having an extended π-system to promote supramolecular electronic communication. Therefore, reacting the conjugated multidentate ligand 5,5'-pyridyl-3,3'-bi-1 H-pyrazole with different copper salts solvothermally led to three interesting hexameric salts having different ground-state valences, [Cu(L)(NO)(CHOH)](NO)·4CHOH, [(CH)NH][CuCu(L)](SO)·4HO, and [CuCu(L)](NO)·2CHOH. The monovalent Cu salt is an insulator, but the mixed-valent Cu-Cu and Cu-Cu salts are semiconductors.

Magnetostructural relationship for μ-phenoxido bridged ferric dimers.

Three Fe(iii) dimers, [Fe(L-H)]·2CHCN (1), [Fe(L-OCH)] (2) and [Fe(L-OCH)]·2CHCN (3), containing the pentadentate O,N,N,O,O-donor Schiff-base ligands with variable size pendants, were synthesized and structurally characterized. The three ligands were generated in situ from 2-(iminomethyl)phenol, 2-methoxy-6-(iminomethyl)phenol and 2-ethoxy-6-(iminomethyl)phenol, respectively. All three crystal structures contain centrosymmetric dimers of edge-sharing octahedra of Fe(iii) ions through a pair of μ-phenoxido bridges.