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mitigative effect of La on Glycine max seedlings under Pb-Cd Compound Pollution

Journal of Rare Earths 1999年第4期17卷 303-307页

作者：周青黄晓华曹玉华张剑华 Suzhou Railway Teachers Coll Dept Biol Suzhou 215009 Peoples R China

mitigative effect of La on Glycine max seedlings under combined Pb and Cd pollution was studied through pot culture experiment. The results show that the growth and metabolism of Glycine max seedlings are inhibited by the solution with 500 mg.L-1 Pb + 100 mg.L-1 Cd. When 30 mg. L-1 LaCl3 is used to spray Glycine max seedlings once, the injury effect of combined Pb and Cd pollution is reduced. The experiment proves that the effect is related to La which can raise photosynthetic rate, chlorophyll content and activity of nitrate reductase, and reduce cell membrane permeability, content of Pb and Cd, and keep TTC reduction ability of Glycine max seedling.

关键词： rare earths lanthanum Glycine max seedlings Pb-Cd compound pollution mitigative effect

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mitigative effect of Sports Bra in Breast Discomfort in Daily Life and During Exercise

Mitigative Effect of Sports Bra in Breast Discomfort in Dail...

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2011 International Conference on Physical Education and Society Management (ICPESM2011)

作者： Xiaona Chen Jianping Wang Fashion·Art Design Institute Donghua University

The aim of this study was to discuss the therapeutic value of sports bra in breast pain caused by either physical element or excessive exercise. Mastalgia is a common complaint from female and few women never experienced breast pain in daily life. It was proved that sports bra provides relief in mastodynia without side effect. Breast is lack of strong muscles or bones inside to support itself, which results in breast sagging, discomfort and exercised induced breast pain or even injure. So as an effective outside supporter, sports bra is a necessary protection device for women doing exercise. Since the mitigative effect of sports bra is applicable for both mastalgia and breast pain induced by sports, sports bra should be used more extensively.

关键词： mitigative effect sports bra breast pain mastalgia breast motion

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Foliar application of sodium hydrosulfide(NaHS),a hydrogen sulfide(H2S) donor,can protect seedlings against heat stress in wheat(Triticum aestivum L.)

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Journal of Integrative Agriculture 2016年第12期15卷 2745-2758页

作者： YANG Min QIN Bao-ping MA Xue-li WANG Ping LI Mei-ling CHEN Lu-lu CHEN Lei-tai SUN Ai-qing WANG Zhen-lin YIN Yan-ping State Key Laboratory of Crop Biology/Agronomy College Shandong Agricultural University Tai'an 271018 P.R.China Tai'an Academy of Agricultural Sciences Tai'an 271018 P.R.China

Temperature extremes represent an important limiting factor to plant growth and productivity. Low concentration of hydrogen sulfide （H2S） has been proven to function in physiological responses to various stresses. The present study evaluated the effect of foliar application of wheat seedlings with a H2S donor, sodium hydrosulfide （NariS）, on the response to acute heat stress. The results showed that pretreatment with NariS could promote heat tolerance of wheat seedlings in a dose-depen- dent manner. Again, it was verified that H2S, rather than other sulfur-containing components or sodion derived from NariS solution, should contribute to the positive role in promoting wheat seedlings against heat stress. To further study antioxidant mechanisms of NariS-induced heat tolerance, superoxide dismutase （SOD, EC 1.***.1.1 ）, catalase （CAT, EC 1.***.1.6） and ascorbate peroxidase （APX, EC 1.***.1.11 ） activities, and HzS, hydrogen peroxide （H2O2）, malonaldehyde （MDA）, and soluble sugar contents in wheat seedlings were determined. The results showed that, under heat stress, the activities of SOD, CAT, and APX, H2S, H2O2, MDA, and soluble sugar contents in NaHS-pretreated seedlings and its control all increased. Meanwhile, NaHS-pretreated seedlings showed higher antioxidant enzymes activities and gene expression levels as well as the H2S and soluble sugar levels, and lower H2O2, MDA contents induced by heat stress. While little effect was detected in antioxidant enzymes activities and soluble substances contents in pretreated wheat seedlings compared with its control under normal culture conditions （data not shown）. All of our results suggested that exogenous NariS could alleviate oxidative damage and improve heat tolerance by regulating the antioxidant system in wheat seedlings under heat stress.

关键词： wheat seedlings sodium hydrosulfide heat stress antioxidant system mitigative effect

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Synthesis and Application of Lanthanide Complexes with Schiff Base of Pridoxylidence-Glycine

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Journal of Rare Earths 2002年第6期20卷 646-650页

作者：黄晓华周青王玉红王云翔李奚王小锋李邨 Southern Yangtze University Nanjing Normal University Nanjing 210024 China Nanjing Normal University The Key Laboratory of Industrial Biotechnology Ministry of Education Wuxi 214036 China Suzhou Railway Teachers College

A series of novel rare earths complexes with Schiff base of pridoxylidence-glycine acid (HL) were synthesized in absolute methanol under argon atmosphere. The complexes were characterized by elemental analysis, molar conductivity, IR, UV spectra, and H-NMR spectra et al. Data indicate that the complexes have a general formula Ln LCl2.3H(2)O (Ln = La, Y, Sm, Gd, Dy, Yb; L = C10H11N2O4). effects of the complexes (Ln = La) on physiological and biochemical indexes of plants under Pb stress were studied. The experiments shown that the complexes obviously mitigated Pb pollution results in decreasing of chlorophyll content, rising of cell membrane permeability, changing catalase(CAT) and distribution of Pb.

关键词： rare earths lanthanide complexes Schiff base glycine max seedlings Pb stress mitigative effect

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