|本期目录/Table of Contents|

[1]张乖乖 简敏菲** 熊小英 余厚平 倪才英.模拟水淹条件下乐安河河岸带优势植物丁香蓼生理生化指标的响应*[J].应用与环境生物学报,2019,25(06):1-11.[doi:10.19675/j.cnki.1006-687x.2019.02038]
 ZHANG Guaiguai,JIAN Minfei,**,et al.Effects on the Physiological and Biochemical Indices of the Dominatn Plant Ludwigia prostrata in the Riparian Zone of the Le’an River under the Simulated water flooding conditions[J].Chinese Journal of Applied & Environmental Biology,2019,25(06):1-11.[doi:10.19675/j.cnki.1006-687x.2019.02038]
点击复制

模拟水淹条件下乐安河河岸带优势植物丁香蓼生理生化指标的响应*()
分享到:

《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年06期
页码:
1-11
栏目:
研究论文
出版日期:
2019-12-30

文章信息/Info

Title:
Effects on the Physiological and Biochemical Indices of the Dominatn Plant Ludwigia prostrata in the Riparian Zone of the Le’an River under the Simulated water flooding conditions
作者:
张乖乖1 简敏菲12** 熊小英2 余厚平2 倪才英2
1江西师范大学生命科学学院,江西省亚热带植物资源保护与利用重点实验室 南昌 330022
2江西师范大学鄱阳湖湿地与流域研究教育部重点实验室 南昌 330022
Author(s):
ZHANG Guaiguai1 JIAN Minfei1 2** XIONG Xiaoying2 YU Houping2 & NI Cai-ying2
1 College of Life Science, Jiangxi Provincial Key Laboratory of Protection and Utilization of Subtropical Plant Resources, Jiangxi Normal University, Nanchang 330022, China;
2 Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China
关键词:
河岸带丁香蓼叶绿素抗逆酶渗透调节物质丙二醛
Keywords:
Ludwigia prostrate riparian zone chlorophyll anti-enzyme activity osmotic regulating substance malondialdehyde (MDA)
DOI:
10.19675/j.cnki.1006-687x.2019.02038
摘要:
为探究河岸带植物的耐淹机理其及生存策略,选择乐安河河岸带优势种丁香蓼(Ludwigia prostrata Roxb.)为试验材料,设置全淹(FULL)组、半淹(HALF)组、浸润(INF)组和对照(CK)组等4种不同水分条件进行室内培养,分析不同水淹时间内丁香蓼的叶片叶绿素、抗逆酶活性指标(SOD、CAT、POD)、渗透调节物质(可溶性蛋白、可溶性糖)和丙二醛(Malondialdehyde, MDA)等生理生化指标的变化。结果显示,随着水淹强度的增加,丁香蓼植株受胁迫的伤害逐渐增大;水淹处理28 d后,浸润处理丁香蓼依然生长良好,全淹条件下的丁香蓼植株全部死亡。短时间的浸润处理和半淹处理对丁香蓼叶绿素总量无显著影响,但长时间水淹胁迫下的叶绿素总量均显著低于同期对照组(P﹤0.05)。水淹胁迫下,丁香蓼叶片的SOD、POD和CAT活性随水淹时间的延长总体呈先升高后下降的趋势,而浸润组的CAT活性呈上升趋势并在水淹28 d后与对照相比显著(P﹤0.05)升高41.6%。水淹处理能显著提高丁香蓼叶片的渗透调节物质的含量与MDA含量,且各指标随着水淹胁迫时间的延长呈先升高后下降趋势;在水淹胁迫21 d后,浸润组的可溶性蛋白、可溶性糖及MDA含量较CK组分别降低52.9%、25.9%及6.5%。综上表明,丁香蓼能通过增加保护酶活性和渗透调节物质含量以适应水淹环境,是一种具有较强耐淹能力的物种;但高强度、长时间的水淹胁迫仍对其生长造成显著伤害。(图4表2参30)
Abstract:
In order to explore the waterlogging mechanism and survival strategy of the riparian plants under the water flooding stress in the typical riparian zone of Le’an River, the dominant species Ludwigia prostrata (L. prostrate) were selected as the experimental materials and cultured in the laboratory with soil pot methods under the four different water flooding intensity stresses including control groups (CK), infiltration(INF) groups, half-flooded (HALF) groups and full submergence (FULL) groups. The changes in characteristics of chlorophyll, activities of anti-adversity enzymes indices, including superoxide dismutase(SOD), catalase(CAT), peroxidase (POD) and osmotic adjustment substances including soluble protein and soluble sugar, malondialdehyde (MDA) in the leaves of L. prostrate were determined. The results showed that the stress damage on L. prostrata gradually increased with the increasing intensity of the water flooding. After flooding for 28 days, the plants of L. prostrata still grew well in the INF groups but the plants of L. prostrata died in the FULL groups. The total chlorophyll contents in the leaves of L. prostrata in the INF groups and HALF groups had no significant differences in the short period of growth, but their total chlorophyll contents were significantly lower than those of the control groups (P < 0.05) in the long period of growth. The activities of SOD, POD and CAT increased firstly and then decreased with the increase of flooding time in the FULL groups; but the contents of CAT in the INF groups increased significantly by 41.6% (P < 0.05) compared with the control group after 28 days flooding. The contents of osmotic regulating substance and MDA in leaves of L. prostrata significantly increased under the waterlogging treatment, but all the above indices increased firstly and then decreased along with the increase of the flooding time. After 21 days of flooding, the contents of soluble protein, soluble sugar and MDA were reduced by 52.9%, 25.9% and 6.5% respectively compared with those of CK. In summary, L. prostrata is an herbaceous species with strong flood resistance through by increasing protective enzyme activity and the contents of osmotic regulation substances, but its growth under more intense flooding and longer flooding time could be still caused significant damage.

相似文献/References:

[1]孔维静,夏会娟,张远,等.辽河保护区及其支流河岸草本植物群落数量分析[J].应用与环境生物学报,2015,21(05):904.[doi:10.3724/SP.J.1145.2015.04016]
 KONG Weijing,XIA Huijuan,ZHANG Yuan,et al.Quantitative analysis of riparian herbaceous community in Liaohe River Conservation Area and its tributaries[J].Chinese Journal of Applied & Environmental Biology,2015,21(06):904.[doi:10.3724/SP.J.1145.2015.04016]
[2]简敏菲,张乖乖,史雅甜,等.土壤镉、铅及其复合污染胁迫对丁香蓼(Ludwigia prostrata)生长和光合荧光特性的影响[J].应用与环境生物学报,2017,23(05):837.[doi:10.3724/SP.J.1145.2017.03030]
 JIAN Minfei**,ZHANG Guaiguai,SHI Yatian,et al.Effects of single and combined pollution stress of cadmium and lead in soil on the growth and photosynthetic fluorescence characteristics of Ludwigia prostrata[J].Chinese Journal of Applied & Environmental Biology,2017,23(06):837.[doi:10.3724/SP.J.1145.2017.03030]
[3]张乖乖,简敏菲,熊小英,等.模拟水淹条件下乐安河河岸带优势植物丁香蓼生理生化指标的响应[J].应用与环境生物学报,2019,25(05):1084.[doi:10.19675/j.cnki.1006-687x.2019.02038]
 ZHANG Guaiguai,JIAN Minfei,**,et al.Response of physiological and biochemical indices to simulated flooding conditions in Ludwigia prostrata, the dominant plant in the riparian zone of the Le’an River[J].Chinese Journal of Applied & Environmental Biology,2019,25(06):1084.[doi:10.19675/j.cnki.1006-687x.2019.02038]

备注/Memo

备注/Memo:
收稿日期 Received: 2019-02-28 接受日期 Accepted: 2019-04-22
*国家自然科学基金项目(41461042)和江西省科技支撑计划项目(20161BBG70004)资助
**通讯作者 Corresponding author (E-mail: jianminfei0914@163.com)
点击摘要页题目后的“PDF”可下载阅读全文;本文为已录用的作者修定稿,尚未经编辑全面修改。
引用本文请注明出处本刊;发表刊期和页码将以正式出版时的安排为准,但DOI确定不变。
更新日期/Last Update: 2019-04-26