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The Australian predatory mite, Transeius montdorensis, is an important natural enemy of Bemisia tabaci, thrips, spider mites, and many other pests, and thus might be important for their biological control. Therefore, we aimed to determine whether temperature influences the development of T. montdorensis when preying on B. tabaci. The survival rate and development time of T. montdorensis under different temperature conditions were compared when fed with 1 st to 3 rd instar nymphs of B. tabaci as its prey. We analyzed the association between temperature and the growth rate of T. montdorensis. The results show that the developmental period of T. montdorensis was significantly affected by temperature. The development period of T. montdorensis was the longest (23.23 days) at 15 °C and the shortest (4.62 days) at 35 °C. From 15–35 °C, the developmental period of T. montdorensis correlated negatively with temperature. In addition, increasing temperature (15–30 °C) promoted T. montdorensis survival. The survival rate was 64% at 15 °C and was highest (92%) at 30 °C; however, survival was reduced as the temperature increased from 30 to 35 °C; with only 66% survival at 35 °C. The logistic equation is better at correlating temperature and development than the linear one. The different developmental stages of T. Montdorensis varied in the temperature thresholds of development and effective thermal summation. The temperature threshold of development was 10.45 °C at the immature stage, which had an effective thermal summation of 99.87 d ·°C. [ABSTRACT FROM AUTHOR]

Two new sesquiterpenes, named selina-4(14),7,11-trien-9-ol (1) and selina-4(14),11-dien-7-ol (2), along with two known compounds were isolated from rhizomes of Atractylodes macrocephala Koidz. All structures were assigned on the basis of detailed spectroscopic analyses. The absolute configuration of 1 was established by TDDFT-ECD calculations. Compound 1 was found to moderately inhibit LSD1 activity with IC50 value of 34.0 μM. Compounds 1 and 4 exhibited a regulate effect on Keap1-Nrf2-ARE pathway. [ABSTRACT FROM AUTHOR]

A core-shell multilayered composite microsphere with electric and magnetic features was designed and prepared on the basis of mutilayered fabrication. This kind of microspheres was obtained by introducing a rod-like conductive polyanilline (PANI) or its derivatives onto the surface of magnetic Fe3O4 nanoparticles with 4,4'-diphenylmethane diisocyanate as a anchor molecule. Subsequently, the Fe3O4/PANI or Fe3O4/aniline oligomers microspheres, as a secondary core, were covered with a cross-linked shell layer which was constructed by a dispersion polymerization process of methacrylic acid and vinyl pyrrolidone. The structure and morphologies were characterized by using a FTIR, XRD, UV-vis, SEM, TEM and TGA. The average diameter of Fe3O4 nanoparticles prepared is about 10.7 nm, and the PANI nanobars hold the size in the range of about 20.4-25.6 nm. The PANI nanobars are covalently assembled on the surface of Fe3O4 nanoparticles mainly in a mode of extended or horizontal arrangements through XRD and TEM results. The electromagnetic properties were examined based on different polymerization degrees and component ratios of PANI or its derivatives, showing characteristics of soft magnetic materials and controllable conductivity. The multilayer microspheres can be readily used to perform separation and magnetism guide, even electric and pH-modulated drug release in the light of swelling determination and a laser diffraction particle size analyzer, and are potentially of interest for drug targeting purpose.