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| 1 | Molecular cloning and characterization of a gene encoding the proline transporter protein in common bean(Phaseolus vulgaris L.)显示文摘As a typical compatible solute, proline is accumulated in plants under environmental stresses. Proline transporter(Pro T) plays an important role in proline distribution between plant organs. Using a candidate gene approach, we cloned a c DNA sequence for Pro T from common bean(Phaseolus vulgaris L.) and designated the gene Pv Pro T. The deduced amino acid sequence of Pv Pro T showed high similarity to Bet/Pro T proteins from other leguminous plants, and the highest similarity was observed with mothbean(Vigna aconitifolia L.) Vu Pro T.Relative quantification of the m RNA level of Pv Pro T using real-time PCR analysis showed that the Pv Pro T transcript level was higher in leaves than in stems and roots of common bean plants subjected to drought and salt stress. Under 20%(w/w) PEG-6000 treatment,drought-resistant plants expressed a higher level of Pv Pro T transcripts than droughtsensitive plants. Although heterologous expression of Pv Pro T in the Escherichia coli mutant mkh13 showed that Pv Pro T exhibited uptake activities for proline and betaine, no betaine content was detected in the common bean. These findings suggest that Pv Pro T plays an important role in the transportation of proline in common bean plants exposed to drought and salt stress. | Jibao Chen Jing Wu Yunfeng Lu Yuannan Cao Hui Zeng Zhaoyuan Zhang Lanfen Wang Shumin Wang | 2016 | The Crop Journal2016，4，5： | 2 |
| 2 | An available formula of the sandy beach state induced by plunging waves显示文摘Laboratory experiments are performed to explore the response rule of a sandy beach profile under plunging wave on a non-uniform sediment-bed slope. The initial beach slope of combination of 1/10 and 1/20 is exposed to regular waves and cnoidal waves respectively. The free surface elevation, process of wave propagation, wave breaking, uprush and backwash and the change of a cross-shore beach profile are measured and recorded. The beach profile under the regular waves action exhibits two parts: a sandbar profile and a beach berm profile, and only one typical profile transformation under the cnoidal waves action is obtained, which is the beach berm profile. In the laboratory experiments, it is found that the beach states under wave action related to the previous factors. In addition, they are related to the characteristic of breaking waves such as the breaking intensity of the plunging wave. A concept about the characteristic angle of the plunging wave has been put forward through the observation and analysis of the phenomenon of the laboratory experiment. A qualitative analysis about the sediment transport carrying by currents generated from the plunging wave and the state of beach profile under the wave action has been done. The quantitative analysis about the relationship between the characteristic angle and Irribarren number has been done. An available formula of equilibrium states for the sandy beach induced by the plunging wave has been established based on the relationship between Irribarren number and the beach profile. By fitting these experimental results and others' experimental results to three lines, the three fitting coefficients can be calculated in their formula respectively. The recommended empirical formulas can divide three states of a beach morphology profile obviously, which include a depositive beach, an erosive beach and an intermediate beach. | JIANG Changbo WU Zhiyuan CHEN Jie DENG Bin LONG Yuannan LI Lianjie | 2017 | Acta Oceanologica Sinica2017，36，9： | 0 |
| 3 | Carbazole ring: A delicate rack for constructing thermally activated delayed fluorescent compounds with through-space charge transfer显示文摘Three carbazole derivatives, Ac PTC, Px PTC and Pt PTC, consisting of two 9,9-dimethyl-9,10-dihydroacridine,phenoxazine or phenothiazine donor groups and one diphenyltriazine acceptor group fixed at 1,8,9-positions of a single carbazole ring via phenylene, are designed and synthesized. X-ray diffraction analysis of Ac PTC reveals that there exist multiple π-π interactions between the donor and acceptor groups to form a sandwich-like structural unit with edge-to-face interaction model. The compounds thus show obvious thermally activated delayed fluorescence with through-space charge transfer character and possess considerable photoluminescence quantum yields of up to 73% in doped films with sky-blue to yellow emissions. The solution-processed electroluminescent devices achieve the highest maximum external quantum efficiencies of 10.0%, 11% and 5.6% for Ac PTC, Px PTC and Pt PTC, respectively, with small efficiency roll-offs. | Kuofei Li Tao Wang Bing Yao Yuannan Chen Hao Deng Hongmei Zhan Zhiyuan Xie Yanxiang Cheng | 2021 | Chinese Chemical Letters2021，32，12： | 0 |
| 4 | Association of urotensin Ⅱ with angiographic severity of coronary artery disease显示文摘Objective The goal of this study was to examine the association between urotensin Ⅱ (U Ⅱ) concentration and the severity of coronary artery disease (CAD). Methods We studied U Ⅱ concentrations in 100 patients with known or suspected CAD referred for cardiac catheterization. Based on coronary angiograms, subjects were classified as having no or mild CAD (stenosis <50%) and significant CAD (stenosis=50%). Micheal score system was used to estimate the severity of CAD. Result U Ⅱ concentration in the significant CAD group had no difference compared with the no or mild CAD group (1.95±1.18pmol/L vs 2.04±1.47pmol/L, P>0.05), but higher in the severe group (score =9) than in the normal or nearly normal group (score<3)(2.50±1.62pmol/L vs 1.61±1.05pmol/L, P=0.03). UⅡ concentration had no relationship with other known risk factors, but it correlated with CAD severity (r=0.213, P=0.034). In multiple regression analysis, U Ⅱ is one of the determinants of the severity of CAD, other than age, abnormal glucose, hypertension and gender. Conclusios U Ⅱ is elevated in severe CAD and there is a significant relationship between U Ⅱ concentration and CAD severity. (J Geriatr Cardiol 2007;4:229-232.) | Lifang Zhang Yuannan Ke Yong Wang Xianlun Li Li Chen | 2007 | Journal of Geriatric Cardiology2007，4，4： | 0 |
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