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Rice science 2013年第4期20卷 276-283页

作者： LIU Li WANG Li DENG Fei HUANG Yun LIU Dai-yin REN Wan-jun YANG Wen-yu College of Agronomy Sichuan Agricultural University/Key Laboratory of Crop PhysiologyEcology and Cultivation in Southwest China Sichuan General Popularization Centre of Agricultural Technique

Effects of shading at the flowering and grain filling stages on osmotic regulation substance content and protective enzyme activities in the leaves of different rice genotypes （e.g., Ilyou 498, Gangyou 188, Dexiang 4103, Gangyou 527 and Chuanxiang 9838） were investigated. The results showed that the malondialdehyde content of Gangyou 188 significantly increased under shading, whereas those of Ilyou 498, Dexiang 4103, Gangyou 527 and Chuanxiang 9838 showed no significant differences compared to the control. The soluble sugar content significantly decreased in Ilyou 498, Gangyou 188, Dexiang 4103 and Chuanxiang 9838, whereas it did not significantly increase in Gangyou 527 under the weak light conditions （shading）. Moreover, the soluble protein content in the leaves of different genotypes tended to decrease under shading. Further, the protective enzyme activities in the leaves varied in different rice genotypes under the shading treatment. Based on the osmotic regulation substance content and the protective enzyme activities in the leaves of different rice genotypes, it was concluded that Gangyou 188 and Gangyou 527 had strong abilities to adapt to the low light conditions. In addition, the mechanism of damage to rice leaves in different genotypes under shading was discussed.

关键词： malondialdehyde content osmotic regulation substance content protective enzyme rice genotype shading

Effects of Different Arbuscular Mycorrhizal Fungi on Growth and protective enzyme Activity of Glycyrrhiza uralensis

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Medicinal Plant 2018年第2期9卷 57-60,64页

作者： Yuandong ZOU Qiong GAO Hongyan BI Jihong FAN Deparment of Horticulture Beijing Vocational College of Agriculture

[Objective] This study aimed to investigate the effects of 5 kinds of arbuscular mycorrhizal fungi( Acaulospora mellea,Glomus mosseae,Glomus versiforme,Glomus aggregatum,Glomus etunicatum) on the growth and protective enzyme activity of Glycyrrhiza uralensis Fisch. [Method] The growth indicators and protective enzymes activity of glycyrrhiza plants inoculated and uninoculated with fungi were compared. [Result] The plant height,basal diameter,main root length,aboveground fresh weight,underground fresh weight,aboveground dry weight and underground dry weight of the inoculated glycyrrhiza plants were increased significantly compared with those in the control( non-inoculation) group. In the inoculated glycyrrhiza plants,the growth index was significantly increased compared with that in the control group( P <0. 05); the activities of superoxide dismutase( SOD) and peroxidase( POD) increased first and then decreased; and the activity of catalase( CAT) showed a continuous rising trend. The effects of different inoculants on the growth of G. uralensis were significantly different.[Conclusion]G. etunicatum,G. mosseae and G. aggregatum had a significant effect on the growth of G. uralensis,and were superior to other fungi in resisting the adverse environment.

关键词： Glycyrrhiza uralensis Fisch Arbuscular mycorrhizal fungi Growth index protective enzyme

Effects of Vitamin E on the Activities of protective enzymes and Membrane Lipid Peroxidation in Leymus Chinensis under Drought Stress

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Chemical Research in Chinese Universities 2008年第1期24卷 80-83页

作者： GU Jie LIU Gong-she GUO Juan ZHANG Jin Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education Jilin University Changchun 130021 P. R. China Key Laboratory of Photosynthesis and Environmental Molecular Physiology Institute of Botany Chinese Academy of Sciences Beijing 100093 P. R. China

Leymus chinensis seedlings were treated with 0.05--10 mmol/L vitamin E under osmotic stress in the presence of polyethylene glycol（PEG） as the stress reagent. The effects of the different concentrations of exogenous vitamin E on the activities of SOD, POD and free proline, and the MDA contents under drought stress were examined so as to ascertain the mechanism of Leymus chinensis resistance to drought stress and explore the possible preventive measures. The results indicate that the activities of SOD and POD decreased but the free proline and MDA contents increased as drought stress was accentuated, showing an enhancement of oxidative stress that may cause a decline in membrane stabilization. However, the activities of SOD and POD and the free proline content increased, whereas the MDA content reduced in Leymus chinensis pretreated with vitamin E in comparison with that of the control. This indicates that exogenous vitamin E enhanced the antioxidation of Leymus chinensis seedlings. It suggests that cytomembrane can be protected from damage by increasing the free proline content and the activities of SOD and POD that result in enhancing the drought resistance of Leymus chinensis seedlings.

关键词： Vitamin E Drought stress Leymus chinensis protective enzyme Membrane lipid peroxidation

Influencing Factors on Rice Sheath Blight Epidemics in Integrated Rice-Duck System

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Journal of Integrative Agriculture 2012年第9期11卷 1462-1473页

作者： SU Pin LIAO Xiao-lan ZHANG Ya HUANG Huang College of Bio-Safety Science and Technology Hunan Agricultural University Changsha 410128 P.R.China College of Agronomy Hunan Agricultural University Changsha 410128 P.R.China

Sheath blight, a disease caused by the fungus Rhizoctonia solani Kuhn （anamorph）, has been the most economically significant disease of rice. It was frequently reported that the disease was well-controlled in integrated rice-duck system without the employment of fungicides. However, the effecting factors behind this phenomenon were rarely reported. In this research, experiment was carried out between two treatments, rice combined with ducks （RD） and conventional rice field without ducks rearing （CK） in early season rice paddy, to investigate the variations of sclerotia in floodwater and on rice plant, microclimate 10 cm above the waterline in rice paddy and activity of protective enzymes in rice plants. The results showed that the floating sclerotia in floodwater in RD was 86-91% lower than that in CK, and adhering sclerotia in rice plant in RD was 67-78% lower than that in CK. The relative humidity tested significantly lower and light intensity tested significantly higher in RD. The temperature in the early rice growth stages in RD was slightly lower than that in CK, but it was significantly higher （32.3-36.5~C） in the middle stage rice growth stages. The polyphenoloxidase （PPO） activity in RD were lower than that in CK, but the enhanced activity of phenylalanine ammonia-lyase （PAL）, peroxidase （POD） and Chitinase was observed in different stages of rice growth in RD, especially the Chitinase which showed higher activity in all investigating days.

关键词： rice sheath blight integrated rice-duck system sclerotia microclimate protective enzyme

Mechanism of Effect of Lanthanum Nitrate on Vigor of Aged Rice Seeds

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Journal of Rare Earths 2000年第3期18卷 219-223页

作者：洪法水魏正贵赵贵文 Department of Biology Suzhou University Suzhou 215151 China Department of Chemistry University of Science and Technology of China Hefei 230026 China

The effect of La(NO3)(3) on natural or artificial aged rice seeds vigor was studied. The results show that the germination rate, germination index and vigor index of aged rice seed increase. Activities of superoxide dismutase, catalase and peroxidase are enhanced. . O-2(-) and malond ialdehyde contents decrease in germinating stage of aged rice seed, and cell membrane permeability of aged rice seeds reduces by treating with La(NO3)(3). The vigor increase of rice natural aged seed is greater than that of artificial aged rice seeds by treating with La(NO3)(3).

关键词： rare earths lanthanum nitrate rice seeds protective enzyme

The influence about activity of protective enzymes in needles of Larix spp of different cone grades

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The influence about activity of protective enzymes in needle...

Analysis on Membrane Stability of Crown in Winter Wheat in Frigid Region in China

中国第五届植物化感作用学术研讨会

作者： ZHANG Jian,YAN Shan-chun College of Forestry,Northeast Forestry University,Harbin 150040,China

In order to study the relationships of tree nutrition and chemical defense,the activity fluctuations of the protective enzymes SOD,CAT,and POD,which in the needles of the Larix gmelinii and ***,were *** results showed that: the activity of the protective enzymes of the two kinds of Larch was all decreased with the increasing of cone production (that was: gradeⅠ>gradeⅡ>gradeⅢ>gradeⅣ).The activity of the protective enzymes of the Larch with less or no cone production was significant higher than that with other cone production (Pprotective enzymes when the cone production grade was *** the activity of SOD,grade Ⅰ was significant different from the other grades(PSOD Ⅰ *Ⅱ=0.023,PSOD Ⅰ *Ⅲ=0.02,PSOD Ⅰ *Ⅳprotective enzymes of the two kinds of Larch (P>0.05),which indicated that the insect resistance capacity of Larch was directly related to the cone production but was a little affected by the species of the Larch.

关键词： Larix gmelinii Larix olgensis coning quantity plant resistance protective enzyme

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Journal of Northeast Agricultural University(English Edition) 2013年第2期20卷 1-11,F0003页

作者： Wang Xiao-nan Xie Dong-wei Fu Lian-shuang Sun Ying-lu Li Zhuo-fu Luan Fei-shi College of Agricalture Northeast Agricultural University

Four varieties of winter wheat with different return green rates were used to analyze the plasma membrane stability and the factors that affect winter wheat in the frigid region during winter. The removal of reactive oxygen species, the degree of plasma membrane impairment, water composition and content, and the changes in cell viability in the crowns, which contain the growing point, were studied during the period from cold acclimation to the deep freezing. The results showed that electrical conductivity which reflects the degree of plasma membrane damaged under low temperature was significantly correlated with the free water and the total water content. The malondialdehyde （MDA） content, which reflects the degree of membrane peroxidation, was very significantly correlated with superoxide dismutase （SOD）, peroxidase, and ascorbic acid. During the deep freezing period, the SOD activity and glutathione （GSH） content of the winter wheat varieties were relative to their cold resistance. During this period, the MDA stability, SOD, GSH, and the total water and the free water content might be used to identify the cold resistance of winter wheat varieties.

关键词： winter wheat cold resistance cell viability protective enzyme plasma membrane peroxidation water