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Wenjie Tong(Wenjie Tong),Junying Li(Junying Li),Wenfeng Cong(Wenfeng Cong),Cuiping Zhang(Cuiping Zhang),Zhaoli Xu(Zhaoli Xu),Xiaolong Chen(Xiaolong Chen),Min Yang(Min Yang),Jiani Liu(Jiani Liu),Lei Yu 한국식물병리학회 2022 Plant Pathology Journal Vol.38 No.6
Root-knot nematode disease is a widespread and catastrophic disease of tobacco. However, little is known about the relationship between rhizosphere bacterial community and root-knot nematode disease. This study used 16S rRNA gene sequencing and PICRUSt to assess bacterial community structure and function changes in rhizosphere soil from Meloidogyne incognita-infected tobacco plants. We studied the rhizosphere bacterial community structure of M. incognita-infected and uninfected tobacco plants through a paired comparison design in two regions of tobacco planting area, Yuxi and Jiuxiang of Yunnan Province, southwest China. According to the findings, M. incognita infection can alter the bacterial population in the soil. Uninfested soil has more operational taxonomic unit numbers and richness than infested soil. Principal Coordinate Analysis revealed clear separations between bacterial communities from infested and uninfested soil, indicating that different infection conditions resulted in significantly different bacterial community structures in soils. Firmicutes was prevalent in infested soil, but Chloroflexi and Acidobacteria were prevalent in uninfested soil. Sphingomonas, Streptomyces, and Bradyrhizobium were the dominant bacteria genera, and their abundance were higher in infested soil. By PICRUSt analysis, some metabolism-related functions and signal transduction functions of the rhizosphere bacterial community in the M. incognita infection-tobacco plants had a higher relative abundance than those uninfected. As a result, rhizosphere soils from tobacco plants infected with M. incognita showed considerable bacterial community structure and function alterations.
Topology design and analysis of compliant mechanisms with composite laminated plates
Xinxing Tong,Wenjie Ge,Yonghong Zhang,Zhenfei Zhao 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.2
To improve the small deformation and high stress level in hinge zones of compliant mechanisms with isotropic material, a topology optimization method of compliant mechanisms with composite laminated plates was proposed. Based on the anisotropy and designability of composite laminated plates, a topology optimization model of compliant mechanisms with composite laminated plates was built to maximize the deformable capability. Numerical examples of designing compliant inverters and grippers were investigated to demonstrate the effectiveness of the proposed method. The influence mechanism of layer sequences on topologic shapes, deformation and loading capability were also discussed. The results showed that the deformable capability and stress levels of compliant mechanisms with composite laminated plates were further improved by a reasonable configuration of layer sequences.
Linxiang Tan,Wenjie Wu,Qiaoqiao Yin,Xiaoxia Ke,Ru Qiao,Guoxiu Tong,Lanlan Zhu 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.52 No.-
The dimer-type heterostructured Ag/Zn0.995Ni0.005O microspheres were prepared via two-stepmicrowave-assisted process, which exhibited stronger visible-light-activated antibacterial performancethan visible-light only, ZnO/Vis, Zn0.995Ni0.005O/Vis, or AgNPs/Vis. It is attributed to not only theinteraction of released metal ions with functional groups of vital enzymes and proteins, but also thecollapsing force of reactive oxygen species to the cells. Photoelectrochemical measurements show thatthe photogenerated charges of Ag/Zn0.995Ni0.005O possess longer lifetime and higher separation resultingfrom the synergistic effect between Ni and Ag, which leads to its superior visible-light-drivenantibacterial performance. Gram-negative bacteria are more effectively restrained by Ag/Zn0.995Ni0.005Othan Gram-positive bacteria because of structural difference between their cell walls.