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Rad9 protein plays an important role in cell-cycle checkpoint signal transduction in human and yeast cells, but knowledge about Rad9 in plants is limited. This study reports that the Rad9 gene of rice can generate the transcript products OsRad9.1 and OsRad9.2 through alternative splicing. OsRad9.1, with all nine exons, is the main cell-cycle checkpoint protein involved in the response of rice to genotoxic stresses (ultraviolet radiation and antibiotic stress), environmental stresses (drought, salt, and heavy metal stress), and auxin stimuli (2,4-D, IAA, and IBA). Meanwhile, transcript isoform OsRad9.2, which lost exon7 and exon8, showed different preferential stimulation effects on these stresses and pollen development duration. These results might indicat that besides the monitoring and repair of DNA damage, Rad9 might involve in the development of pollen.

Urban development is facing the problems，such as the scarcity of resources of urban space and the deterioration of urban ecological environment，the theory of Three-dimensional city is an effective way to solve the urban problems. Through introducing the developed process and advantages of three-dimensional city, the necessity and targeting of three-dimensional city can be summarized, meanwhile, the major strategies of three-dimensional city are emphasized：enhancing the legislative exploration of three-dimensional city; constructing three-dimensional traffic system of city; promoting the construction of complex of city and especially highlighting the application of ecological technology in the process of three-dimensional city.

The gene encoding a group 3 late embryogenesis abundant (LEA) protein was cloned from callus of the drought-tolerant grass Pogonatherum paniceum. Three alternatively spliced transcripts of this gene were amplified by RT-PCR. According to the bioinformatics analysis, the gene contained three exons and two introns. The PpLEA3.1 transcript which was the most abundant one in P. paniceum contained all three exons, and the PpLEA3.2 transcript lacked fragments of the first two exons which encoded a 41-amino acid-long region of the PpLEA3 protein. The PpLEA3.3 transcript retained the second intron. The three splicing patterns resulted in changes in the number of repeats of an 11-amino acid motif, hydropathy and the predicted 3-dimensional structure. When expressed in Escherichia coli, the three proteins differentially affected growth responses to salt, cold and heat stress. These results confirmed that the complete motif repeat structures and an appropriate hydrophilic/hydrophobic balance are important for the LEA protein in providing protection against various forms of stresses.

A new oxygenated fuel, methyl 2-methoxy-propyl carbonate, designed according to the fuel design theory and the special burning performance of diesel engine, was synthesized by using propylene glycol monomethyl aether, carbonic acid dimethyl ester, and metal sodium. The optimum transesterification reaction conditions were gained as: n(propylene glycol monomethyl aether):n(carbonic acid dimethyl ester)=2:1, w(catalyst with a metal sodium) = 2% total amount of materials, reaction time 5h, and temperature keeping at 85°C. Yield of methyl 2-methoxy-propyl carbonate 75.0%. By checking up physicochemical properties and making diesel engine test of the fuel blend, which testified that the oxygenated fuel was a kind of available substitution for petroleum.

Four novel coordination compounds of formula [M(Hoxonato)]n·xnH2O (1M⊂xH2O; H3oxonic: 4,6-dihydroxy-1,3,5-triazine-2-carboxylic acid; M = Mn, Co, Zn, x = 3; M = Ni, x = 4) were prepared and characterized. The isomorphous Mn(II), Co(II) and Zn(II) derivatives contain densely packed 1D helical chains. To increase the dimensionality of these systems, the [M(Hoxonato)]n secondary building unit was coupled to rod-like N,N′-spacers, allowing the isolation of [Zn(Hoxonato)(bpy)0.5]n·nH2O (2Zn⊂H2O; bpy: 4,4′-bipyridine) and [Ni(Hoxonato)(bpy)]n·6nH2O (3Ni⊂6H2O). The [M(Hoxonato)]n chains are pillared by the bpy spacers within 2D corrugated layers in the former, into 2D rectangular grid layers in the latter. The thermal behavior of all the species was investigated by coupling simultaneous thermal analysis and thermodiffractometry. Static gas adsorption measurements with N2 (77 K) and CO2 (273 K) revealed that activated 3Ni⊂6H2O possesses permanent porosity. Dynamic gas separation studies towards CH4:CO2 mixtures (0.73:0.27 v/v, 273 K) proved that this system is able to selectively capture CO2 up to 0.16 mmol per gram of material.

A Chlorella strain tolerant to high-strength anaerobic digestion effluent was isolated from the anaerobic digestion effluent with a long-term exposure to air. The strain was identified as a Chlorella by morphological and molecular biological methods, and named Chlorella sp. BWY-1, The anaerobic digestion effluent used in this study was from a biogas plant with the raw materials of swine wastewater after solid-liquid separation. The Chlorella regularis (FACHB-729) was used as the control strain. The comparative study showed that Chlorella sp, BWY-Ihad relatively higher growth rate, biomass accumulation capacity and pollutants removal rate in BG11. and different concentrations of anaerobic digestion effluent. Chlorella sp. BWY-1 had the highest growth rate and biomass productivity (324.40 mg.L-1) in BG11, but its lipid productivity and lipid content increased with the increase of anaerobic digestion effluent concentration, In undiluted anaerobic digestion effluent, the lipid productivity and lipid content of Chlorella sp. BWY-1 were up to 44. 43% and 108. 70 mg.L-1, respectively. Those results showed that the isolated algal strain bad some potential applications in livestock wastewater treatment and bioenergy production, it could be combined with a solid-liquid separation, anaerobic fermentation and other techniques for processing livestock wastewater and producing biodiesel.

The title complex, [Co(H2O)6][Co2(TTHA)(H2O)2]·4H2O (TTHAH6 = triethyl­enetetr­amine­hexa­acetic acid), consists of discrete [Co(H2O)6]2+ cations and [Co2(TTHA)(H2O)2]2− binuclear anionic units. Each Co(II) ion in the binuclear units is coordinated by one water and half a TTHA6− anion as a pentadentate ligand, giving a distorted octahedral arrangement. The [Co(H2O)6]2+ cation lies on a center of inversion in the crystal and exhibits strong hydrogen-bond interactions with four carboxyl­ate groups from the TTHA6− ligand and the water mol­ecules, leading to the formation of a three-dimensional network.

A DNA segment with DNA methylation site was detected from rice callus with or without 5-azaC treatment by MSAP. This segment was located on the first exon of gene OsMAPK2 and its 5' non-coding region. Gene OsMAPK2 had a CpG island in the 5' region and was homologous to AtMAPK12. Real-time quantitative PCR and Hpa II-McrBC PCR were conducted to detect the gene expression and DNA methylation of OsMAPK2 in the process of callus formation. The results showed that the DNA methylation was able to control the expression of OsMAPK2. The additon of 2.0 mg/L 2,4-D could induce DNA demethylation in the 5' region and activate the expression of OsMAPK2 gene. However, after long-time stimulation (100 h), the gene was methylated again, and the gene expression level was decreased. The trends of DNA methylation and gene expression stimulated by low concentrations of 2,4-D (0.5 and 1.0 mg/L) were similar to 2.0 mg/L 2,4-D, but the expression levels in each time point were low. On the other hand, high concentration of 2,4-D (5.0 mg/L) completed the processes of induction and suppression of the gene in a shorter time.

This paper studied the effect of polyethylene glycol (PEG) on regeneration and free proline accumulation of callus of Pogonatherum paniceum (Lam.) Hack. under motionless liquid culture condition and shake liquid culture condition. Callus of P. paniceum had the ability to resist the stress of PEG. The effects of PEG stress and culture conditions on the callus of P. paniceum appeared mainly in two aspects, delaying regeneration time and debasing regeneration rates. The shake liquid culture mainly delayed the regeneration time and PEG stress mainly debased the regeneration rates. Free proline accumulated in the two culture conditions, and the contents of proline were positively correlated with PEG concentrations and culture time. After stress removal, most of the callus could recover the ability of regeneration, and the free proline might pay an important part in the inhibition and recovery. So it must be chosen a more than 300 g x L(-1) PEG concentration and long than 3 weeks culture time in the selection of drought-resistant mutants of P. paniceum. The motionless liquid culture was more suitable for selection of drought-resistant mutants.

Biosynthesis of liquid fuels and biomass-based building block chemicals from microorganisms have been regarded as a competitive alternative route to traditional. Zymomonas mobilis possesses a number of desirable characteristics for its special Entner-Doudoroff pathway, which makes it an ideal platform for both metabolic engineering and commercial-scale production of desirable bio-products as the same as Escherichia coli and Saccharomyces cerevisiae based on consideration of future biomass biorefinery. Z. mobilis has been studied extensively on both fundamental and applied level, which will provide a basis for industrial biotechnology in the future. Furthermore, metabolic engineering of Z. mobilis for enhancing bio-ethanol production from biomass resources has been significantly promoted by different methods (i.e. mutagenesis, adaptive laboratory evolution, specific gene knock-out, and metabolic engineering). In addition, the feasibility of representative metabolites, i.e. sorbitol, bionic acid, levan, succinic acid, isobutanol, and isobutanol produced by Z. mobilis and the strategies for strain improvements are also discussed or highlighted in this paper. Moreover, this review will present some guidelines for future developments in the bio-based chemical production using Z. mobilis as a novel industrial platform for future biofineries.

Reaction of copper powder with Mn(OAc)2·4H2O and triethanolamine in DMF solution in air yields a high nuclearity, mixed-valent CuI4CuII13MnII4MnIII12MnIV12 cluster. X-ray crystallography shows that 1 contains an unprecedented adamantane-like Mn28 core connected wholly by Mn4O4 cubane units. Magnetic susceptibility data indicate a S = 51/2 ground state in low magnetic field with a S = 63/2 excited state only 5 K in energy above the ground state.