Jiangxi Agricultural University is located in the northern suburbs of Nanchang city. Nanchang is the capital city of Jiangxi province. JXAU is a key province-run university and is one of the first universities in China to confer Bachelor's and Master's degrees. The campus is beautiful with pleasant environment and scenery.With 16 colleges, JXAU offers degrees in 61 academic majors. Since its establishment in 1940, over 70,000 students have graduated from JXAU. Even though the university places key emphasis in school education, considerable amount of progress has been made in the field of academic research, vocational training and community services. Wikipedia.
Ai H.,Jiangxi Agricultural University |
Huang L.,Jiangxi Agricultural University |
Ren J.,Jiangxi Agricultural University
PLoS ONE | Year: 2013
To investigate population structure, linkage disequilibrium (LD) pattern and selection signature at the genome level in Chinese and Western pigs, we genotyped 304 unrelated animals from 18 diverse populations using porcine 60 K SNP chips. We confirmed the divergent evolution between Chinese and Western pigs and showed distinct topological structures of the tested populations. We acquired the evidence for the introgression of Western pigs into two Chinese pig breeds. Analysis of runs of homozygosity revealed that historical inbreeding reduced genetic variability in several Chinese breeds. We found that intrapopulation LD extents are roughly comparable between Chinese and Western pigs. However, interpopulation LD is much longer in Western pigs compared with Chinese pigs with average r2 0.3 values of 125 kb for Western pigs and only 10.5 kb for Chinese pigs. The finding indicates that higher-density markers are required to capture LD with causal variants in genome-wide association studies and genomic selection on Chinese pigs. Further, we looked across the genome to identify candidate loci under selection using FST outlier tests on two contrast samples: Tibetan pigs versus lowland pigs and belted pigs against non-belted pigs. Interestingly, we highlighted several genes including ADAMTS12, SIM1 and NOS1 that show signatures of natural selection in Tibetan pigs and are likely important for genetic adaptation to high altitude. Comparison of our findings with previous reports indicates that the underlying genetic basis for high-altitude adaptation in Tibetan pigs, Tibetan peoples and yaks is likely distinct from one another. Moreover, we identified the strongest signal of directional selection at the EDNRB loci in Chinese belted pigs, supporting EDNRB as a promising candidate gene for the white belt coat color in Chinese pigs. Altogether, our findings advance the understanding of the genome biology of Chinese and Western pigs. © 2013 Ai et al.
Li P.,Jiangxi Agricultural University
Genetics, selection, evolution : GSE | Year: 2012
Ear size and shape are distinct conformation characteristics of pig breeds. Previously, we identified a significant quantitative trait locus (QTL) influencing ear surface on pig chromosome 5 in a White Duroc×Erhualian F2 resource population. This QTL explained more than 17% of the phenotypic variance. Four new markers on pig chromosome 5 were genotyped across this F2 population. RT-PCR was performed to obtain expression profiles of different candidate genes in ear tissue. Standard association test, marker-assisted association test and F-drop test were applied to determine the effects of single nucleotide polymorphisms (SNP) on ear size. Three synthetic commercial lines were also used for the association test. We refined the QTL to an 8.7-cM interval and identified three positional candidate genes i.e. HMGA2, SOX5 and PTHLH that are expressed in ear tissue. Seven SNP within these three candidate genes were selected and genotyped in the F2 population. Of the seven SNP, HMGA2 SNP (JF748727: g.2836 A>G) showed the strongest association with ear size in the standard association test and marker-assisted association test. With the F-drop test, F value decreased by more than 97% only when the genotypes of HMGA2 g.2836 A>G were included as a fixed effect. Furthermore, the significant association between g.2836 A>G and ear size was also demonstrated in the synthetic commercial Sutai pig line. The haplotype-based association test showed that the phenotypic variance explained by HMGA2 was similar to that explained by the QTL and at a much higher level than by SOX5. More interestingly, HMGA2 is also located within the dog orthologous chromosome region, which has been shown to be associated with ear type and size. HMGA2 was the closest gene with a potential functional effect to the QTL or marker for ear size on chromosome 5. This study will contribute to identify the causative gene and mutation underlying this QTL.
Huang H.-J.,Jiangxi Agricultural University |
Yuan X.-Z.,Hunan University
Progress in Energy and Combustion Science | Year: 2015
Energy from biomass, bioenergy, is a promising source to replace fossil fuels in the future, as it is abundant, clean, and carbon dioxide neutral. Thermochemical liquefaction of biomass is widely investigated as a promising method to produce one kind of liquid biofuel, namely bio-oil. This review presents the recent research progress in the liquefaction of typical biomass from a new perspective. Particularly, this article summarizes five aspects of related work: first, the effect of solvent type on the liquefaction behaviors of biomass; second, the effect of biomass type on the liquefaction behaviors of biomass; third, the liquefaction of biomass in sub-/super-critical ethanol; fourth, the liquefaction of biomass in organic solvent-water mixed solvents; fifth, the liquefaction of sewage sludge. Meanwhile, the research advance in the migration and transformation behavior of heavy metals during the liquefaction of sewage sludge was also summarized in this review. This review can offer an important reference for the study of biomass liquefaction. © 2015 Elsevier Ltd. All rights reserved.
Liu Z.Y.,Jiangxi Agricultural University
PloS one | Year: 2012
All honey bee species (Apis spp) share the same sex determination mechanism using the complementary sex determination (csd) gene. Only individuals heterogeneous at the csd allele develop into females, and the homozygous develop into diploid males, which do not survive. The honeybees are therefore under selection pressure to generate new csd alleles. Previous studies have shown that the csd gene is under balancing selection. We hypothesize that due to the long separation from the mainland of Hainan Island, China, that the giant honey bees (Apis dorsata) should show a founder effect for the csd gene, with many different alleles clustered together, and these would be absent on the mainland. We sampled A. dorsata workers from both Hainan and Guangxi Provinces and then cloned and sequenced region 3 of the csd gene and constructed phylogenetic trees. We failed to find any clustering of the csd alleles according to their geographical origin, i.e. the Hainan and Guangxi samples did not form separate clades. Further analysis by including previously published csd sequences also failed to show any clade-forming in both the Philippines and Malaysia. Results from this study and those from previous studies did not support the expectations of a founder effect. We conclude that because of the extremely high mating frequency of A. dorsata queens, a founder effect does not apply in this species.
Hu L.,Jiangxi Agricultural University |
Liu S.,Jiangxi Agricultural University
Genome | Year: 2012
MADS-box transcription factors are known to be involved in many important processes during plant growth and development. To date, few cucumber MADS-box genes and little tissue expression profiling have been reported. Recent completion of the cucumber whole-genome sequencing has allowed genome-wide analysis of the MADS-box gene family in cucumber as well as its comparison with other species. Here, we performed comprehensive analyses of the 43 cucumber MADS-box genes and compared them with those in Arabidopsis, poplar, and grapevine. The phylogenetic analysis showed that most cucumber members were comparable with those in other species, with the exception of AG members. At the same time, the three subfamilies FLC, AGL12, and Bs were absent in the cucumber genome. The conserved motif analysis revealed that most motifs outside the MADS domain were distributed only in specific groups. The analysis of chromosomal localization suggested that tandem duplication might contribute to the MADS-box gene expansion. Expression analysis revealed that 42 of 43 cucumber MADS-box members were expressed in multiple plant tissues, thereby implying their various roles in plants. © 2012 Published by NRC Research Press.
Hu L.,Jiangxi Agricultural University |
Liu S.,Jiangxi Agricultural University
Genetics and Molecular Biology | Year: 2011
Members of the ERF transcription-factor family participate in a number of biological processes, viz., responses to hormones, adaptation to biotic and abiotic stress, metabolism regulation, beneficial symbiotic interactions, cell differentiation and developmental processes. So far, no tissue-expression profile of any cucumber ERF protein has been reported in detail. Recent completion of the cucumber full-genome sequence has come to facilitate, not only genome-wide analysis of ERF family members in cucumbers themselves, but also a comparative analysis with those in Arabidopsis and rice. In this study, 103 hypothetical ERF family genes in the cucumber genome were identified, phylogenetic analysis indicating their classification into 10 groups, designated I to X. Motif analysis further indicated that most of the conserved motifs outside the AP2/ERF domain, are selectively distributed among the specific clades in the phylogenetic tree. From chromosomal localization and genome distribution analysis, it appears that tandem-duplication may have contributed to CsERF gene expansion. Intron/exon structure analysis indicated that a few CsERFs still conserved the former intron-position patterns existent in the common ancestor of monocots and eudicots. Expression analysis revealed the widespread distribution of the cucumber ERF gene family within plant tissues, thereby implying the probability of their performing various roles therein. Furthermore, members of some groups presented mutually similar expression patterns that might be related to their phylogenetic groups. © 2011, Sociedade Brasileira de Genética.
Hu G.-J.,Nanchang University |
Hu X.-X.,Jiangxi Agricultural University
International Journal of Theoretical Physics | Year: 2014
We investigate spin squeezing and the mean quantum Fisher information per particle χ 2 for mixed Hamiltonian model. By adopting frozen-spin approximation, we first derive a analytical expression of spin squeezing parameter ξ 2 and then numerically calculate ξ 2 and χ 2. It is shown that most of the time the spin squeezing appears alternatively in the x and y directions, but it cannot appear simultaneously in the two directions. It is also shown that the smaller external field strength induces better entanglement and larger period. © 2013 Springer Science+Business Media New York.
Teng Y.,Jiangxi Agricultural University
Energy Procedia | Year: 2011
This paper empirically analyzes the effect of the indigenous R&D, introduction of technology on the energy consumption intensity in China, based on a panel of 31 industrial sectors for 1998-2006.The results show that indigenous R&D contributes to a significant decline of energy intensity in high energy-consuming intensity group and 31 industrial sectors,and has no significant effects on energy consumption intensity in low energy-consuming intensity group. Foreign technology purchased has a significant negative influence on energy consumption intensity only in 31 industrial sectors. Domestic technology transfer has no significant impact on energy consumption intensity in all samples. This paper will interest those policy makers and industrial entrepreneurs who are willing to improve energy efficiency in the industrial sector. © 2011 Published by Elsevier B.V.
Li W.-C.,Jiangxi Agricultural University |
Liu D.,Jiangxi Agricultural University
Zoological Journal of the Linnean Society | Year: 2014
The genus Scoparia from the Hailuogou Glacier area in the south-eastern fringe of the Tibetan Plateau of south-western China is studied, nine species are revealed by combining DNA barcoding (658bp of the mitochondrial gene cytochromec oxidase subunitI, COI) and morphology. Studies show that Scoparia species from the Hailuogou Glacier area are 37.5% as many as all the previously known congeners in China. Six species are described as new to science: Scoparia simplicissima Li sp. nov., Scoparia tribulosa Li sp. nov., Scoparia longispina Li sp. nov., Scoparia gibbosa Li sp. nov., Scoparia globosa Li sp. nov., and Scoparia annulata Li sp. nov. The female of Scoparia metaleucalis is described for the first time herein. All species are either diagnosed or described and illustrated, and a map of China showing the topography and localities where Scoparia species are recorded is also provided, including the species number of all the recorded localities. The results reveal the exceptional species diversity of Scoparia from the Hailuogou Glacier area, as well as demonstrate that the integration of DNA barcoding and morphological approaches is highly effective for indentifying scopariine moths in the Hailougou glacier area. All the studied specimens are deposited in the Insect Museum, Jiangxi Agricultural University, Nanchang, China. © 2014 The Linnean Society of London.
One new species of the genus Scoparia Haworth, 1811 from China (lepidoptera: Crambidae, Scopariinae) [Una nueva especie del género scoparia haworth, 1811 de China (Lepidoptera: Crambidae, Scopariinae)]
Li W.C.,Jiangxi Agricultural University
SHILAP Revista de lepidopterologia | Year: 2012
Scoparia cordata Li, sp. n. is described from Jiangxi Province, China. Image of the adult is provided and the tympanal organ and genitalia are illustrated.