[1]马闯,刘子敬,侯澄辉,等. 混合盐胁迫对二倍体刺槐和绒毛白蜡根系形态和抗氧化指标的影响[J].西北林学院学报,2019,34(3):8-14.[doi:10.3969/j.issn.1001-7461.2019.03.02]
 MA Chuang,LIU Zi-jing,HOU Cheng-hui,et al. Responses of Root Morphology and Antioxidant Indexes of Diploid Robinia pseudoacacia and Fraxinus velutina to Mixed Salt Stress[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2019,34(3):8-14.[doi:10.3969/j.issn.1001-7461.2019.03.02]
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 混合盐胁迫对二倍体刺槐和绒毛白蜡根系形态和抗氧化指标的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第34卷
期数:
2019年第3期
页码:
8-14
栏目:
出版日期:
2019-05-31

文章信息/Info

Title:
 Responses of Root Morphology and Antioxidant Indexes of Diploid Robinia pseudoacacia and Fraxinus velutina to Mixed Salt Stress
文章编号:
1001-7461(2019)03-0008-07
作者:
 马闯1刘子敬2侯澄辉3张瑞芳4龙鸿1*于玮玮1
 (1.天津农学院 园艺园林学院,天津 300384;2.北京林业大学 水土保持学院,北京 100083;3.陕西周至国家级自然保护区管理局,陕西 西安 710400;4.福建农林大学 生命科学学院,福建 福州 350000)
Author(s):
 MA Chuang1LIU Zi-jing2HOU Cheng-hui3ZHANG Rui-fang4LONG Hong1*YU Wei-wei1
 (1.College of Horticulture and Landscape,Tianjin Agricultural University,Tianjin 300384,China; 2.School of Soil and Water Conservation,Beijing Forest University,Beijing 100083,China; 3.Zhouzhi National Nature Reserve Administration,Xian 710400,Shaanxi,China; 4.College of Life Sciences,Fujian Agriculture and Forestry University,Fuzhou 350002,Fujian,China)
关键词:
 二倍体刺槐绒毛白蜡根系形态保护酶混合盐胁迫
Keywords:
 diploid Robinia pseudoacacia Fraxinus velutina root morphology protect enzyme mixed salt stress
分类号:
S718.43
DOI:
10.3969/j.issn.1001-7461.2019.03.02
文献标志码:
A
摘要:
 以二倍体刺槐和绒毛白蜡幼苗为材料,配制NaCl和Na2CO3混合盐梯度,比较2种植物根系生物量和形态差异,测定根系保护酶活性以及膜脂过氧化产物和可溶性蛋白含量,以探讨盐碱胁迫对植物根系生长和生理的影响。结果表明:1)低盐碱胁迫(80 mmol·L-1盐浓度)促进二倍体刺槐根系生物量、总长度、总表面积和总体积增加,而抑制绒毛白蜡根系生物量和形态指标;2)绒毛白蜡根系SOD活性对低混合盐浓度敏感,而二倍体刺槐根系SOD活性在高盐浓度下显著上升;2种植物根系POD活性在低盐浓度下最大,CAT活性在240~320 mmol·L-1盐浓度下达到峰值;3)二倍体刺槐根系中MDA含量高峰值出现在低盐浓度下,绒毛白蜡则出现在240 mmol·L-1浓度;随着混合盐浓度增加,二倍体刺槐根系可溶性蛋白含量逐渐降低,绒毛白蜡则先升高后降低;4)多因素方差分析表明,2种植物根系主要形态指标间存在物种间差异,混合盐胁迫对根系形态和抗氧化生理指标的影响不同。在盐碱胁迫下,二倍体刺槐和绒毛白蜡根系表现出适应性差异。
Abstract:
 Seedlings of diploid Robinia pseudoacacia and Fraxinus velutina were planted under the mixed salt stress with different concentrations of NaCl and Na2CO3.The biomass and morphological characteristics of the roots were compared and the activities of root protective enzymes and the contents of lipid peroxidation and soluble proteins were determined.The purposes were to explore the effects of mixed salt stress on the growth and physiology of plant roots,and to elucidate the salt tolerance strategies of two species.The results showed that 1) the root biomass,root length,total surface area and volume of diploid R.pseudoacacia increased under low saline-alkali stress (80 mmol·L-1 salt concentration),while the biomass and morphology of F.velutina were suppressed.2) Root SOD activity of F.velutina was sensitive to low saline-alkali stress,while that of diploid R.pseudoacacia increased significantly in the 240 mmol·L-1 salt concentration.The maximum root POD activity of two species was observed under low saline-alkali stress and root CAT activity reached the peak value under 240-320 mmol·L-1 salt concentration.3) The maximum content of root MDA appeared under low salt concentration in diploid R.pseudoacacia and 240 mmol·L-1 salt concentration in F.velutina.With the increase of saline-alkali stress,the root soluble protein content of diploid R.pseudoacacia decreased gradually,while that of F.velutina increased firstly and then decreased.4) By two-way ANOVA analysis,the significant differences were observed on the morphology characteristics with SOD activity and MDA contents between two species.It was suggested that the roots of diploid R.pseudoacacia and F.velutina adapted to saline-alkali stress differently.

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备注/Memo

备注/Memo:
 收稿日期:2018-07-30修回日期:2018-10-04
基金项目:国家青年科学基金项目:基于细根形态结构和生理功能探讨栓皮栎萌蘖力衰退机理(31600499);天津农学院科学研究发展基金计划(2014N13)。
作者简介:马闯,男,讲师,博士,研究方向:植物逆境生理生态。E-mail:machuang_tjau@126.com
*通信作者:龙鸿,男,教授,博士,研究方向:林木遗传育种。E-mail:longhong@tjau.edu.cn
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