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Articles by MingXia Chen
Total Records ( 2 ) for MingXia Chen
  Mingxia Chen , Jianliang Huang , Kehui Cui , Lixiao Nie and Farooq Shah
  NH3 volatilization from the cultivated rice (Oryza sativa L.) canopy is one of the major contributing factors of the N loss in the rice production. The objectives of this study are to examine the genotypic variations in NH3 volatilization from canopy among the cultivars and to determine the mechanisms responsible for NH3 volatilization from rice. With these aims, two pot experiments were conducted using Yoshida culture solution and four rice genotypes (the Yangdao-6, the Wuyujing-3, the BG34-8 and the Zhenshan-97) in greenhouse at Huazhong Agricultural University, Wuhan City, China. The amount of ammonia volatilized from different rice cultivars was evaluated at booting, heading and milking stages. At booting stage, inhibitors of glutamine synthetase (methionine sulfoximine (MSO)) and photorespiration (isonicotinyl hydrazine (INH)) were sprayed on leaves at 0.1 mmol L-1 and 2 g L-1, respectively. Genotypic variations in amount of NH3 volatilized from canopy existed among the four rice cultivars at different growth stages and N treatments. According to results, spraying of the MSO at 0.1 mmol L-1 was significantly increased the NH3 volatilization from the rice canopy, while spraying INH at 2 g L-1 decreased the NH3 volatilization. Obtained results were showed that rate of ammonia volatilization was negatively correlated with the leaf GS activity, while the leaf GO activity related positively to the rice ammonia volatilization.
  Wentao Sun , ChunLing Lei , Sihai Zhao , LiLun Wang , ChunChao Bi , Rui Wang , XiaoLiang Zhou , Enqi Liu and MingXia Chen
  Observation on morphological and ultrastructural changes of retinopathy in diabetic rabbit long been fed with high sucrose and fat fodders. Use alloxan to establish diabetic rabbit model. Feed the rabbits with high sucrose and fat fodders conduct a Fluorescein Fundus Angiography test (FFA) every 3~4 months to observe morphological changes in retina. Conduct Transmission Electron Microscopy (TEM) examination on eyeball of the model 10~12 months later so as to get wise to the ultrastructural changes in the rabbit retina. The FFA indicated that with the protraction of the disease, Fluorescein Isothiocyanate (FITC) leakage and neo-vasulariztion shadows similar to that of human were seen in the diabetic rabbit model. TEM examination showed that no abnormality was seen in the ultrastructure of the rabbit retina of normal group. The retina of the diabetic rabbit exhibited microfilament and focal dissolving, myelin sheath structure loosening and partial demyelination changes, pericyte mitochondrion tumefaction, endothelial cell layering, space increasing, mitochondrion tumefaction on the nerve fiber layer. Glycogenosome accumulation was seen in the outer nuclear layer retina cells.
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