Effects of Zinc Deficiency and Drought on Plant Growth and Metabolism of Reactive Oxygen Species in Maize （Zea mays L.）   总被引：1，自引：0，他引：1  

WANG Hong JIN Ji-yun 《中国农业科学(英文版)》2007,6(8):988-995

The combinative effects of applied zinc (Zn) and soil moisture on the plant growth, Zn uptake, and the metabolism of reactive oxygen species (ROS) in maize (Zea mays L.) plants were examined through two pot experiments under greenhouse conditions. Maize variety Zhongdan 9409 was used. In experiment 1, maize plants were grown in cumulic cinnamon soil with five Zn treatments (0, 3.0, 9.0, 27.0, and 81.0 mg Zn kg-1 soil). Three treatments of soil moisture including serious drought, mild drought, and adequate water supply were set at 30-35 %, 40-45 %, and 70-75 % (w/w) of soil saturated water content, respectively. Soil saturated water content was 36% (w/w). The dry matter weights of shoots were enhanced by Zn application and adequate water supply. There was no apparent difference in plant growth among Zn application rates from 3.0 to 81.0 mg Zn kg-1 soil. The increases of plant growth and Zn uptake due to Zn application were found more significant under well-watered condition than under drying condition. In experiment 2, two levels of Zn (0 and 5.0 mg Zn kg-1 soil) and soil moisture regimen (40-45 % and 70-75 % of soil saturated water content, respectively) were set. Zn deficiency or water stress resulted in higher concentrations of O2-· and malondiadehyde in the first fully expanded leaves.Zn deficiency lowered the activity of superoxide dismutase (SOD, EC 1.15.1.1) in leaves. Drought stress increased SOD activity in leaves regardless of Zn supply. The activity of guaiacol peroxidase (POD, EC1.11.1.11) was found to be enhanced by Zn supply only in well-watered leaves. Zinc deficiency or water stress had little effect on the activity of catalase (CAT, EC 1.11.1.6). The higher ROS level in early maize leaves due to water stress seemed not to be alleviated or lowered partially by Zn application. However, Zn fertilizer was recommended to apply to maize plants irrigated or supplied with adequate water, otherwise Zn deficiency would reduce the water use for plant biomass production.  相似文献   

金属硫蛋白对锌营养状态的评价   总被引：3，自引：0，他引：3  

王佳堃  孙文志 《四川畜牧兽医》2001,28(12):21-22

综述了有关金属硫蛋白的理化性质、生理功能、在微量元素锌代谢中的作用及现有的实验研究。从理论和实验上论证了金属硫蛋白评价锌营养状态的可行性。  相似文献   

雏鸭锌缺乏症     

徐之勇  仲崇岳 《中国家禽》2005,27(14):24-25

锌参与多种酶的组成或影响某些酶的结构稳定，六大类酶中都有锌酶的存在。碳酸酐酶是被发现的第一个含锌酶，对机体酸碱平衡和肺内二氧化碳释放有重要作用，同时参与禽类骨骼钙化和蛋壳形成。胶原酶是含锌酶，其活性高低决定鸡骨骼中胶原合成和周转强度，禽类缺锌表现出明显的骨骼异常，可能与此酶和碳酸酐酶的活性下降有关。DNA聚合酶和RNA聚合酶是含锌酶，缺锌时活性降低会导致DNA合成障碍，某些蛋白质合成相应受到抑制，因此动物表现出生长发育受阻的症状。锌参与碱性磷酸酶(AKP)的组成，动物缺锌时AKP活性明显下降，许多学者建议将AKP活性作为评定锌营养状况的指标。  相似文献   

锌缺乏对肉鸡淋巴组织器官发育的影响   总被引：6，自引：1，他引：5  

赵德明  姜敬涛 《中国兽医杂志》1996,22(8):9-10

锌缺乏对肉鸡淋巴组织器官发育的影响赵德明姜敬涛张日俊马毅新何诚方文军（中国农业大学，北京１０００９４）锌是维持人和动物正常生理功能和生物代谢所必需的重要微量元素之一［１］。近年来通过对锌代谢与疾病发生状况的研究表明，锌缺乏可以引起机体一系列代谢改变及...  相似文献   

高钙日粮对蛋鸡生产性能及出壳雏体内锌含量的影响     

邓俊良  王哲  李毓义  朱连勤 《中国兽医学报》1991,(2)

生长期日粮钙>3.11%,可使蛋鸡性成熟期明显延缓,开产日龄推迟;其蛋锌及子代出壳雏血锌和多数组织锌含量明显降低,但胚胎及出壳雏鸡未见畸变.出壳雏血锌含量能反映体内锌状态,可作为其评价指标.产蛋期高钙(6.11%)或低钙(0.83%)日粮均可使产蛋性能及孵化率降低.  相似文献   

湖北宜昌百里荒石灰土和绵羊蹭痒病初探     

张志美 《草与畜杂志》1996,(2):22-23

  相似文献   

仔猪锌缺乏症的诊治     

李贵霞 《河北畜牧兽医》2001,17(9):27-27

  相似文献   

锌与动物免疫功能的关系     

徐铭  朱丹丹 《畜牧兽医科技信息》2013,(4):11-12

动物免疫功能受体内外诸多因素的影响,近30年来,微量元素与免疫功能的关系越来越受到人们的重视,在微量元素中,目前锌与免疫功能关系的研究较为活跃。锌是动物生长和生命活动所必需的微量元素,其功能主要包括:锌是多  相似文献   

犊牛微量元素锌缺乏的诊治     

李志明  黄河  吴祥  钱昌勇  方绪兵  汪家香 《北方牧业(奶牛)》2008,(5):50

锌缺乏症是由于饲料中缺锌所引起的生长迟滞、皮肤、骨骼与生殖系统发生的一系列病理变化的一种疾病。近年来,合肥地区部分个体户犊牛出生后,出现生长发育迟滞,两前肢或两后肢弯曲,关节粗大僵硬,有的犊牛甚至生下来呈现畸形,对抗菌药物不敏感,淘汰率较高,个体经济损失较严重。经临床检查及实验室化验。诊断为犊牛锌缺乏症。现将诊治情况报告如下。  相似文献   

猪皮肤病的发生原因及防治   总被引：1，自引：0，他引：1  

刘世均  张凤鸣 《四川畜牧兽医》2005,32(2):41-42

损害皮肤的病因十分复杂,按其损害原因,主要分为以下几类：  相似文献