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Physiological effects of exogenous nitric oxide on Brassica juncea seedlings

Physiological effects of exogenous nitric oxide on  Brassica juncea seedlings
Physiological effects of exogenous nitric oxide on  Brassica juncea seedlings

BIOLOGIA PLANTARUM 55 (2): 345-348, 2011

345

BRIEF COMMUNICATION

Physiological effects of exogenous nitric oxide on Brassica juncea seedlings under NaCl stress

C.-L. ZENG 1,2*, L. LIU 3, B.-R. WANG 4, X.-M. WU 2 and Y . ZHOU 1

College of Life Sciences, Jianghan University, Wuhan, 430056, P .R. China 1

Institute of Oil Crop Research, Chinese Academy of Agricultural Sciences, Wuhan, 430078 P .R. China 2 College of Arts and Sciences, Jianghan University, Wuhan, 430056, P .R. China 3

College of Plant Science and Technology, Huangzhong Agricultural University, Wuhan, 430073 P .R. China 4

Abstract

The study was conducted to investigate the physiological effects of exogenous NO on potherb mustard (Brassica juncea Coss.) seedlings under salt stress. The plants were grown in Hogland nutrient solution for 15 d and treated with 150 mM NaCl, NO donor sodium nitropruside (SNP) and NO scavenger methylene blue (MB-1) for 4 d. The NaCl stress increased superoxide dismutase, peroxidase and ascorbate peroxidase activities and malondialdehyde (MDA) and free proline contents, and decreased soluble protein content. However, the application of exogenous NO limited the production of MDA and free proline, while markedly promoted SOD, POD and APX activity.

Additional key words : antioxidative enzymes, malondialdehyde, methylene blue, proline, sodium nitropruside.

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Salinity adversely affects plant metabolism and causes modi ?cations in growth, development, and gene expression (Amini et al . 2007). The effects of soil salinity on plants are due to a low osmotic potential of soil solution and specific effects of high Na + and Cl - contents (Hasegawa and Bressan 2000). To avoid this adverse effects, plant evolves a great variety of adaptive mechanisms, such as osmotic adjustment and ion compartmentation (Nandwal et al . 2000). As a consequence of these primary effects, secondary stresses, such as oxidative damage due to production of reactive oxygen species (ROS), often occur (Sairam et al . 2002, Arora et al . 2008, Banu et al . 2009, Guo et al . 2009). Plants have different adaptive mechanisms to reduce oxidative damage resulting from salt stress through a cascade of antioxidants (Hichem et al. 2009) and antioxidant enzymes including superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione reductase (GR), peroxidase (POD) and catalase (CAT),

which play critical roles in neutralizing the free radicals (Allen and Tresini 2000).

Nitric oxide (NO) is a water and lipid soluble gaseous compound with high diffusion coefficient (Abat et al . 2008). NO can mediate plant responses to biotic and abiotic stresses including drought (Tian and Lei 2006, Zhang et al . 2009) and salinity (Sheokand et al . 2008, Xie et al . 2008). Although there is a large literature studying the function of NO and the relationship between NO and ROS in plants under salt stress, little has been reported on the time effect of the specific scavenger of NO, such as 2-(4-carboxyphenyl-4,4,5,5-tetramethylimid-azoline-1-oxyl-3-oxide (PTIO) or methylene blue (MB-1), and the reversed effect of them on different physiological parameters. Potherb mustard (Brassica juncea Coss.) is a very popular and important leafy vegetables and its productivity is often limited by salinity. Therefore, the aim

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Received 25 July 2009, accepted 5 January 2010.

Abbreviations : APX - ascorbate peroxidase, MB-1 - methylene blue; MDA - malondialdehyde; POD - peroxidase; PTIO - 2-(4-carboxyphenyl-4,4,5,5-tetramethylimid-azoline-1-oxyl-3-oxide; SOD - superoxide dismutase; SNS - sodium nitropruside. Acknowledgements : This work was supported by National Natural Science Foundation of Hubei province (Grant No. 2008CDB087), Chinese National Basic Research and Development Program (2006CB101607), 863-Hi-techresearch and Development Program of China (2006AA10Z1E4).

* Corresponding author; fax: (+86) 27 84230422, e-mail: zengchangli6111@https://www.wendangku.net/doc/2816752659.html,

C.-L. ZENG et al.

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of this study was to analyze the effects of salt stress on physiological parameters of potherb mustard seedlings and to elucidate protective mechanism of exogenous NO in alleviating salt injury.

Seeds of potherb mustard (Brassica juncea Coss.) were germinated and the 20-d-old seedling were transferred to a cultivation chamber and grown under relative humidity of 70 - 80 %, day/night temperature 25/15 oC, and 16-h photoperiod with a photosynthetic photon flux density (PPFD) of 350 μmol m -2 s -1 (measured at the top of the plants with a 190 SB quantum sensor, LI-COR , Lincoln, NE, USA). The plants were grown in the hole of foam-board suspending on the top of nutrient solution of pots (φ 20 cm), each foam-board containing eight plants. In the entire experiment, all the plants received a nutrient solution (pH 5.5) consisting of 6 mM KNO 3, 5 mM CaCl 2, 1 mM NaH 2PO 4, 2 mM MgSO 4, 0.025 mM H 3BO 3, 2 μM MnCl 2, 1 μM ZnSO 4, 0.1 μM (NH 4)6Na 7MoO 24, 0.25 μM CuSO 4 and 10 μM Fe-EDDHA. The nutrient solution was renewed every 3 d and the V ermiculite partly rinsed with Millipore -filtered water in order to avoid nutrient accumulation. At day 15 after planting, several treatments were used: 1) Hoagland solution (control), 2) Hoagland solution containing 0.1 mM sodium nitropruside (SNP), 3) Hoagland solution containing 5 μM MB-1, 4) Hoagland solution containing 150 mM NaCl, 5) Hoagland solution containing 0.1 mM SNP and 150 mM NaCl and 6) Hoagland solution containing 0.1 mM SNP, 150 mM NaCl and 5 μM MB-1. Then, the second fully expanded leaf in each treatment was removed at the 4th day immediately for further measurements. The experiment was repeated four times under the same conditions.

RWC was estimated according to the method of Whetherley (1950). SOD activity was assayed by monitoring the inhibition of photochemical reduction of nitro-blue tetrazolium according to the method of Bayer and Fridovich (1987). POD activity was measured by following the change of absorption at 436 nm due to guaiacol oxidation (coef ?cient of absorbance of

6.39 mM -1 cm -1

) following Pütter (1974). Malondi- aldehyde (MDA) content was determined by the thiobarbituric acid reaction as described by Heath and Packer (1968). The free proline content in leaves was estimated according to the method of Bates et al . (1973), and sample was extracted in sulphosalicylic acid. Soluble protein content was determined following Bradford (1976) with a bovine serum albumin as a standard. All experiments were repeated three times, and statistical procedures were performed using the PC-SAS software package. Differences between means were determined using Duncan’s multiple range test.

It was observed that RWC decreased markedly under NaCl treatment, and there was a decrease of 34 % at the fourth day after salt treatment (Table 1). Reductions in RWC under salinity stress may be attributed to decreased water uptake due to low substrate water potential, or to injury to the root system (Garg and Singla 2009).

Pretreatment with 0.1 mM SNP protected against the decrease of RWC under salt stress. However, when experiment was performed in the presence of 5 μM MB-1, a specific scavenger of NO, RWC loss was similar to that found in NaCl-treated plants. Furthermore, without salt stress, the treatment of SNP and MB-1 alone did not have any effect on RWC. There are similar reports in alfalfa (Nandwal et al . 2000) and mungbean (Kabir et al . 2004) under salt stress conditions. However, the result was inconsistent with the observation by Sheokand et al . (2008), who found that NO had no significant effect on RWC under salt stress.

Table 1. Effects of exogenous NO on RWC [%], soluble protein

[mg g -1(f.m.)], MDA [mmol g -1(f.m.)] and free proline

[μg g -1

(f.m.)] contents in the leaves of potherb mustard seedlings under NaCl stress. Means of 4 replicates. Different letters indicate significant differences (P < 0.05) according to Duncan’s multiple range tests. For treatments 1 - 6 see text.

Treatments

RWC

Protein MDA

Proline

1-control 85.56a 21.31a 10.62c 270.31d 2-control+SNP 85.47a 19.86ab 9.13c 268.45d 3-control+MB-1 85.40a 18.52b 10.48c 264.17d 4-NaCl 56.41b 6.98d 20.25a 434.05a 5-NaCl+SNP 85.14a 10.81c 14.98b 304.27c 6-NaCl+SNP+MB-1 57.12b 7.88d 19.02a 408.34b

Salt stress led to a significant reduction in protein content, however, the addition of SNP could significantly increase the content of soluble protein compared with the treatment of NaCl alone. Moreover, MB-1 could distinctly reverse the effect of SNP (Table 1). Similar results were reported by Arora et al . (2008) in seedlings of Zea mays and Aghaleh et al . (2009) in Salicornia persica and S. europaea .

MDA has been frequently described as a suitable biomarker for lipid peroxidation (Bailly et al . 1996). In the present study, the content of MDA in the seedling leaves under salt stress increased sharply (Table 1). Similar results were observed by Sheokand et al . (2008) and Banu et al . (2009). However, application of exogenous NO caused the slight reduction of MDA content under control conditions and less increase in MDA content under salt stress (Table 1). The result was in accordance with the observations in Chinese cabbage (López-Carrión et al. 2008) and chickpea (Sheokand et al . 2008). The increased MDA content might be due to the membrane destruction resulting from ROS-induced oxidative damage (Zhang et al . 2007), and exogenous NO might be involved in ROS scavenging.

Proline is a compatible solute that accumulates in great quantities under osmotic stress and participates in osmo-regulation and osmo-protection (López-Carrión et al . 2008). A stable proline content was observed in the

EFFECTS OF NITRIC OXIDE UNDER SALT STRESS

347

SNP and MB-1 treatments and in the control (Table 1). However, the proline content enhanced significantly under salt stress and the addition of SNP partially decreased this enhancement. The protective effect of SNP was reversed by the addition of MB-1. The result was consistent with the observation by López-Carrón et al . (2008). Abiotic stress conditions favour the accumulation of

Fig. 1. Effects of exogenous NO on the activity of SOD, POD and APX in the leaves of potherb mustard seedlings under NaCl stress. All parameters were measured at the 4th day after application. Means ± SE, n = 4, * -values significantly different at P < 0.05 according to Duncan’s multiple range tests. For different treatments see Table 1.

ROS and their metabolism is dependent on antioxidant enzymes such as SOD, CAT, POD and APX. In the present study, there were no significant differences among the NO treatments in SOD, APX, and POD activities. However, the activities showed a steep rise in salt treatments, indicating an induction of the defense system. The treatment of NaCl with SNP caused a further significant (P < 0.05) increase in SOD, POD and APX activities (Fig. 1). However, the effect of SNP was reversed entirely or partially by the addition of MB-1. For example, there was no difference in SOD and POD activities between the treatment of NaCl and NaCl with SNP and MB-1, suggesting that MB-1 entirely inhibited the effect of SNP on SOD and POD. Nevertheless, in APX, MB-1 did not entirely prevent the effect of SNP, because there was significant difference between the NaCl alone and the treatment of NaCl with SNP and MB-1. The results were not entirely consistent with other reports. For instance, Sheokand et al . (2008) found that NO was effective in scavenging H 2O 2 by increasing the activities of CAT, POX and APX under salt stress, while putrescine was more effective in scavenging superoxide radical, as it increased the SOD activity under salt stress. On the other hand, Ruan et al . (2002) observed that exogenous NO significantly enhanced the activities of SOD and CAT, but it did not have any obvious effect on POD activity under salt stress. It is interesting to note that NaCl increased POX activity in the salt-tolerant while decreased in the salt-sensitive wheat cultivar (Mutlu et al . 2009). As concerns the other NO scavengers, Qian et al . (2009) reported that another NO scavenger, PTIO, could abolish all the protective effect of NO against herbicide damage. Similarly, Noriega et al . (2007) found that PTIO could arrest NO-mediated protective effects against to Cd-induced oxidative damage in soybean leaves. In present experiments, endogenous proline content increased simultaneously with antioxidant enzyme activities in the salt-stressed plants, and exogenous proline or betaine increased POD activity (Hoque et al . 2007) and lignin-forming POD expression (Banu et al . 2009). However, under Cd stress, neither exogenous proline nor betaine increased POX activity (Islam et al . 2009). In fact, many contradictory results about antioxidant enzymes response to different stresses have emerged due to the fact that the enzyme responses depend on the plant species, the developmental stage, the organs, as well as on the duration and severity of the stress (Reddy et al . 2004).

To conclude, our results suggested that exogenously supplied NO contributed signi ?cantly to the resistance of potherb mustard to NaCl and had an ameliorating effect on NaCl-induced oxidative stress. However, further research is required to determine the changes of these physiological parameters at the molecular level and the particular genes that are induced to bring such an effect.

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国家名英语缩写

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BZ -------Belize 伯里兹 BJ -------Benin 贝宁 BM -------Bermuda 百慕大 BS -------Bahamas 巴哈马 BF -------Bahamas 巴哈马 BT -------Bhutan 不丹 BW -------Botswana 博茨瓦纳 BO -------Bolivia 玻利维亚 BA -------Bosnia and Herzegovina 波黑 BV -------Bouvet Island 布韦岛 BR -------Brazil 巴西 IO -------British Indian Ocean Territory 英属印度洋领地BN -------Brunei Darussalam 文莱布鲁萨兰 BG -------Bulgaria 保加利亚 BF -------Burkina Faso 布基纳法索 BI -------Burundi 布隆迪 KH -------Cambodia (Internet) 柬埔寨 CB -------Cambodia (CIA World Fact Book) 柬埔寨CM -------Cameroon 喀麦隆 CA -------Canada 加拿大 CV -------Cape Verde 佛得角 KY -------Cayman Islands 开曼群岛

主持词 2020年大学毕业晚会主持词

xx年大学毕业晚会主持词 b:让我们静静享受一下挑战,在日复一日与时间的赛跑中,你会变得更加坚强,更加神采奕奕!又一个青春之旅从今晚启航,又一个光阴的故事在今晚讲述 c:亲爱的同窗,不要带着离别的愁绪,因为明天又是一个新的起点,因为我们相信再次相逢,我们还是一首动人的歌!d:很高兴今天能有这个机会同大家相聚一堂,共叙离别。就让今天铭刻在我们心间,让母校留住我们的风采! a:今天,我们也非常荣幸的请到了 b:下面让我们用热烈的掌声有请上台讲话 结束语a:欢快的舞蹈表达不尽我们对母校的敬意 b:热情的赞歌唱不尽我们对母校的一腔深情 c:流火的六月,我们将带着恩师的叮咛,怀着必胜的信心,走向新的征程 d:绚烂的七月,我们将载着母校的祝愿,带着亲人的希望,向着新的征程扬帆起航 a:老师们,同学们,欢送10级毕业生联欢晚会合:到此结束a李:毕业,是一个沉重的动词; 刘:毕业,是一个让人一生难忘的名词; 李:毕业,是感动时流泪的形容词; 刘:毕业,是当我们以后孤寂时候,带着微笑和遗憾去回想时的副词;

李:毕业,是我们夜半梦醒,触碰不到而无限感伤的虚词。 刘:若干年后,假如我们还能够想起那段时光,也许这不属于难忘,也不属于永远,而仅仅是一段记录了成长经历的回忆。 李:尊敬的各位领导老师 刘:亲爱的各位同学们 合:大家晚上好! 李:很荣幸和大家相聚在这激情如火的六月,在这充满忧伤的六月! 刘:很高兴和大家相聚在放心去飞,20年后再相聚毕业晚会现场! 李:我是李扬 刘:我是刘伟清 李:今天晚会现场非常荣幸的邀请到院系的各位领导和老师们。 刘:让我们首先欢迎 李:灿烂的星空曾经铭刻你我的笑容 刘:美丽的海岸曾经珍藏你我的背影。 李:连绵起伏的山川,像一双腾飞的翅膀支撑起我们坚韧不屈的信念, 刘:沸腾的黄海血脉,像千万奔涌的旋律连绵成我们亘古不灭的传说。 李:在这个光荣同梦想交融的时刻,让我们共同祈祷 合:环保的明天更美好!

国家英文名称及缩写

亚洲: 1阿富汗英文全称:Afghanistan 英文缩写:AFG 2亚美尼亚英文全称:The Republic of Armenia英文缩写:ARM 3阿塞拜疆英文全称:The Republic of Azerbaijan英文缩写:AZE 4巴林英文全称:The Kingdom of Bahrain英文缩写:BRN 5孟加拉共和国The People's Republic of Bangladesh英文缩写:BAN 6不丹王国英文全称:Kingdom of Bhutan英文缩写:BHU 7文莱英文全称:Brunei Darussalam英文缩写:BRU 8缅甸英文全称:The Union of Myanmar英文缩写:MY A

9柬埔寨英文全称:The Kingdom of Cambodia英文缩写:CAM 10中国英文名称The People's Republic of China英文缩写CHN 11塞浦路斯The Republic of Cyprus英文缩写:CYP 12东帝汶英文全称:Democratic Republic of Timor-Leste英文缩写:TLS 13印度英文全称:The Republic of India英文缩写:IND 14印度尼西亚英文全称:The Republic of Indonesia英文缩写:INA 15伊朗英文全称:The Islamic Republic of Iran英文缩写:IRI

16伊拉克英文全称:The Republic of Iraq英文缩写:IRQ 17以色列The State of Israel英文缩写:ISR 18日本英文全称:Japan英文缩写:JPN 19约旦英文全称:The Hashemite Kingdom of Jordan英文缩写:JOR 20哈萨克斯坦英文全称:The Republic of Kazakhstan英文缩写:KAZ 21朝鲜英文全称:Democratic People's Republic of Korea英文缩写:PRK 22韩国英文全称:Republic of Korea英文缩写:KOR

世界各国国名中英文及其简写

序号缩写中文英文 1 AE 阿联酋United Arab Emirates 2 AF 阿富汗Afghanistan 3 AL 阿尔巴尼亚Albania 4 AO 安哥拉Angola 5 AR 阿根廷Argentina 6 AT 奥地利Austria 7 AU 澳大利亚Australia 8 AZ 阿塞拜疆Azerbaijan 9 BD 孟加拉Bangladesh 10 BE 比利时Belgium 11 BG 保加利亚Bulgaria 12 BH 巴林Bahrain 13 BI 布隆迪Burundi 14 BJ 贝宁Benin 15 BM 百慕大Bermuda 16 BN 文莱Brunei 17 BO 玻利维亚Bolivia 18 BR 巴西Brazil 19 BS 巴哈马Bahamas 20 BT 不丹Bhutan 21 BW 博茨瓦纳Botswana 22 CA 加拿大Canada 23 CF 中非共和国Central Africa 24 CG 刚果Congo 25 CH 瑞士Switzerland 26 CK 库克群岛Cook Is. 27 CL 智利Chile 28 CM 喀麦隆Cameroon 29 CN 中国China 30 CO 哥伦比亚Colombia 31 CR 哥斯达黎加Costa Rica 32 CU 古巴Cuba 33 CV 佛得角群岛Cape Verde Is. 34 CY 塞浦路斯Cyprus 35 CZ 捷克共和国Czech 36 DE 德国Germany 37 DK 丹麦Denmark 38 DZ 阿尔及利亚Algeria 39 EC 厄瓜多尔Ecuador 40 EE 爱沙尼亚Estonia 41 EG 埃及Egypt 42 ES 西班牙Spain 43 ET 埃塞俄比亚Ethiopia

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酒店中常用的英文缩写 部门 DEPARTMENT DEPT 职位 POSITION POS 行政办 EXECUTIVE OFFICE EO 财务部 FINANCE DEPARTMENT FIC 会计部 ACCOUNTING ACCT 采购部 PURCHASING DEPARTMENT PD 酒水仓 BEVERAGE STORE 食品仓 FOOD STORE 日用品仓 GENERAL STORE 市场及销售部 SALES & MARKETING DEPARTMENT S & M 前厅部 FRONT OFFICE DEPARTMENT F.O (F/O) 管家部 HOUSEKEEPING HSKP 洗衣房 LAUNDRY ROOM LR 布草房 LINEN ROOM 游泳池 SWIMMING POOL 餐饮部 FOOD & BEVERAGE DEPARTMENT F & B 中餐厅 CHINESE RESTAURANT CHN REST 西餐厅 WEST RESTAURANT WEST REST 日本餐厅 JAPANESE RESTAURANT 大堂吧 LOBBY BAR 送餐部 ROOM SERVICE RM SVC 宴会中心 BANQUET CENTRE 会议厅 CONFERENCE HALL 管事部 STEWARD 娱乐部 ENTERTAINMENT DEPARTMENT ENT 夜总会 NIGHT CLUB 桑拿 SAUNA 健身中心 HEALTH CENTRE 美容美发中心 BEAUTY & BARBER CENTRE 保龄球室 BOWLING BALL 工程部 ENGINEERING DEPARTMENT ENG 保安部 SECURITY DEPARTMENT SEC 人力资源部 HUMAN & RESOURCES DEPARTMENT HR 培训部 TRAINING DEPARTMENT 员工饭堂 STAFF CANTEEN 员工宿舍 STAFF DORMITORY 医务室 CLINIC ROOM 图书馆 LIBRARY 前厅各分部: 接待处 RECEPTION RECP 行政楼层 EXECUTIVE FLOOR E/F

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2.铃声清脆鼓铿锵,天山铃舞尽展情,来自天山的自然是蝶飞花影动,美丽各不同,那就让我们停下脚步,一饱眼福,欣赏由xxx为我们带来的舞蹈《天山铃舞》 3. 军中有歌,歌才动情,军旅里飞来一只熟悉的百灵,不错下面就由请xxx为大家献上一首耳熟能详的老歌,《军中飞来一只百灵》 4.炫酷才叫时尚,八零后心之向往,相信大家都一样,需要个性张扬。今天我们特意请来了城市建设学院的武状元优秀团队,为大家献上一段充满活力的XXX,感谢他们的到来,大家掌声欢迎! 5.相信大家都看过一部曾经风靡一时的电影,那是周杰伦曾经推出的一部年度巨献《不能说的秘密》.里面的四手联弹一定给大家留下了不可磨灭的深刻印象,旋律依旧在脑中回响。不过经典一样可以复制,精彩一样能够粘贴,下面给大家带来的这个惊喜,可谓是非常具有特色,一样是所见不多,机会难得。下面请欣赏xxxx为大家带来的,钢琴四手连弹《军队进行曲》 6.幽幽云水意.漫漫古典情. 诗情画境的晕染为我们带来流动的娴静。请大家随着动人的舞蹈穿越书法的妙境,伴随优雅的琴韵体会超越喧嚣的古韵墨香。下面请欣赏xxx为您带来的xxxx 7.四年的岁月流光见证了你我在XX学院的欢欣成长,相信由很多即将走出校园的`同学都想倾诉衷肠,下面我们就请出来自05对外汉语的毕业生代表xxx听听她如何表达。

全球各国国名的英文缩写大全

有几个国家的缩写比较特殊,在开头列出(补充中) 荷兰 - NL (Netherlands) 西班牙 - ES (Spain) 南斯拉夫 - YU (Yugoslavia) 下面的排列顺序为按照国家英文全名以字典顺序排列检索时找“ - ” 后面的英文全名,字母顺序 AF - Afghanistan 阿富汗 AL - Albania 阿尔巴尼亚 DZ - Algeria 阿尔及利亚 AS - American Samoa 东萨摩亚 AD - Andorra 安道尔 AO - Angola 安哥拉 Av - Anguilla 安圭拉岛 AQ - Antarctica 南极洲 AG - Antigua and Barbuda 安提瓜和巴布达 AR - Argentina 阿根廷 AM - Armenia 亚美尼亚 AA - Aruba 阿鲁巴 AU - Australia 澳大利亚 AT - Austria 奥地利 AZ - Azerbaijan 阿塞拜疆 BF - Bahamas 巴哈马 BH - Bahrain 巴林 BB - Barbados 巴巴多斯 BD - Bangladesh 孟加拉 BY - Belarus 白俄罗斯 BE - Belgium 比利时 BZ - Belize 伯里兹 BJ - Benin 贝宁 BM - Bermuda 百慕大 BS - Bahamas 巴哈马 BT - Bhutan 不丹 BW - Botswana 博茨瓦纳 BO - Bolivia 玻利维亚 BA - Bosnia and Herzegovina 波黑 BV - Bouvet Island 布韦岛 BR - Brazil 巴西 IO - British Indian Ocean Territory 英属印度洋领地

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女:成绩已然过去,面对未来,我们信心百倍。下面有请x校长讲话。 (鼓掌感谢x校长的精彩致辞) 环节一:教师合唱《走进新时代》、《团结就是力量》 男:我们xx人是这样的热情奔放! 女:我们xx人是这样的团结激昂! 男:我们的手牵在一起,就是战胜困难的力量! 女:我们的心连在一起,就是坚不可摧的铜壁铁墙! 男:让我们与优美同行,与高雅同行,与时代同行 女:请欣赏教师合唱《走进新时代》和《团结就是力量》。 指挥:xx 领唱:xx 环节二:舞蹈《开门红》 女:扬起你欢乐的嘴角,带上你的好心情,在这个特别的日子里跟我们一起感受这花样年华。

各个国家英文名称缩写

A字头 AE-阿联酋(UNITED EMIRATES) AF-阿富汗(AFGHANISTAN) AL-阿尔巴尼亚(ALBANIA) AM-亚美尼亚(ARMENIA) AO-安哥拉(ANGOLA) AR-阿根廷(ARGENTINA) AT-奥地利(AUSTRIA) AU-澳大利亚(AUSTRALIA) AZ-阿塞拜疆(AZERBAIJAN(REPUBLIC)) B字头 BD-孟加拉(BANGLADESH) BE-比利时(BELGIUM) BF-布基纳法索(BURKINA FASO) BG-保加利亚(BULGARIA) BH-巴林(BAHREIN) BI-布隆迪(BURUNDI) BJ-贝宁(BENIN) BL-巴勒斯坦() BN-文莱(BRUNEI DARUSSALAM) BO-玻利维亚(BOLIVIA) BR-巴西(BRAZIL) BW-博茨瓦纳(BOTSWANA) BY-白俄罗斯(BYELORUSSIA) C字头 CA-加拿大(CANADA) CF-中非(CENTRAL AFRICA) CG-刚果(CONGO) CH-瑞士(SWITZERLAND) CL-智利(CHILE) CM-喀麦隆(CAMEROON) CN-中国(CHINA) CO-哥伦比亚(COLOMBIA) CR-哥斯达黎加(COSTA RICA) CS-捷克(CZECH REPUBIC) CU-古巴(CUBA) CY-塞浦路斯(CYPRUS) D字头 DE-德国(GERMANY / Deutschland) DK-丹麦(DENMARK) DO-多米尼加共和国(DOMINICAN REPUBLIC)

DZ-阿尔及利亚(ALGERIA) E字头 EC-厄瓜多尔(ECUADOR) EE-爱沙尼亚(ESTONIA) EG-埃及(EGYPT) ES-西班牙(SPAIN) ET-埃塞俄比亚(ETHIOPIA) F字头 FI-芬兰(FINLAND) FJ-斐济(FIJI) FR-法国(FRANCE) G字头 GA-加蓬(GABON) GB-英国(UNITED KINGDOM) GD-格林纳达(GRENADA) GE-格鲁吉亚(GEORGIA) GH-加纳(GHANA) GN-几内亚(GUINEA) GR-希腊(GREECE) GT-危地马拉(GUATEMALA) H字头 HK-香港特别行政区(HONG KONG) HN-洪都拉斯(HONDURAS) HU-匈牙利(HUNGARY) I字头 ID-印度尼西亚(INDONESIA) IE-爱尔兰(IRELAND) IL-以色列(ISRAEL) IN-印度(INDIA) IQ-伊拉克(IRAQ) IR-伊朗(IRAN) IS-冰岛(ICELAND) IT-意大利(ITALY) J字头 JM-牙买加(JAMAICA) JO-约旦(JORDAN) JP-日本(JAPAN)

毕业典礼晚会主持词

毕业典礼晚会主持词X 花开花落,又是一年毕业季,我们毕业典礼就要开始举办,下面是搜集整理的毕业典礼晚会主持词,欢迎阅读。更多资讯请继续关注毕业典礼栏目! 毕业典礼晚会主持词(一) A:青春是一曲荡气回肠的歌,三年前我们怀着彩色梦想走进了鄂大,三年中我们有过欢笑,流过泪水,经历磨炼,得到成长 B:三年后的今天,我们在这里重温青春过往,因为明天就将各奔天涯。也正因为此,今夜,我们承载了太多的祝福与惦念,寄托了太多的关怀与企盼。 C:今晚,让我们再一次重温,那些感动过我们的人和事:灯火通明的教学楼里用功的身影,篮球场上捍卫集体尊严的男儿霸气,满是欢声笑语的宿舍边不着边际的闲谈…… D:又一个三年轮回之后,在同样微凉的夏夜,你是否会记起校园里的梧桐树,你是否会记起日记本里的书签,那些五彩缤纷的日子? A:无数个三年之后,你们的思念是否会有增无减?在你成长的岁月里,在你闯荡社会的每一天,是否会有那么几个瞬间让你渴望回到过去 B:让我们静静享受一下挑战,在日复一日与时间的赛跑中,你会变得更加坚强,更加神采奕奕!又一个青春之旅从今晚启航,又一个光阴的故事在今晚讲述 C:亲爱的同窗,不要带着离别的愁绪,因为明天又是一个新的起点,因为我们相信再次相逢,我们还是一首动人的歌!D:很高兴今天能有这个机会同大家相聚一堂,共叙离别。就让今天铭刻在我们心间,让母校留住我们的风采! A:今天,我们也非常荣幸的请到了…… B:下面让我们用热烈的掌声有请……上台讲话

结束语 A:欢快的舞蹈表达不尽我们对母校的敬意 B:热情的赞歌唱不尽我们对母校的一腔深情 C:流火的六月,我们将带着恩师的叮咛,怀着必胜的信心,走向新的征程 D:绚烂的七月,我们将载着母校的祝愿,带着亲人的希望,向着新的征程扬帆起航 A:老师们,同学们,欢送10级毕业生联欢晚会合:到此结束 A李:毕业,是一个沉重的动词; 刘:毕业,是一个让人一生难忘的名词; 李:毕业,是感动时流泪的形容词; 刘:毕业,是当我们以后孤寂时候,带着微笑和遗憾去回想时的副词; 李:毕业,是我们夜半梦醒,触碰不到而无限感伤的虚词。 刘:若干年后,假如我们还能够想起那段时光,也许这不属于难忘,也不属于永远,而仅仅是一段记录了成长经历的回忆。 李:尊敬的各位领导老师 刘:亲爱的各位同学们 合:大家晚上好! 李:很荣幸和大家相聚在这激情如火的六月,在这充满忧伤的六月! 刘:很高兴和大家相聚在“放心去飞,20年后再相聚—毕业晚会”现场! 李:我是李扬

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