[1]崔洪鑫,柴亚倩,关思慧,等.土壤盐碱胁迫程度对番茄生长、离子稳态及ROS清除能力的影响[J].北方园艺,2023,(07):9-17.[doi:10.11937/bfyy.20223329]
　CUI Hongxin,CHAI Yaqian,GUAN Sihui,et al.Effects of Soil Salinity Stress on Tomato Growth,Ion Homeostasis and ROS Scavenging Ability[J].Northern Horticulture,2023,(07):9-17.[doi:10.11937/bfyy.20223329]
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土壤盐碱胁迫程度对番茄生长、离子稳态及ROS清除能力的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 期数: 2023年07 页码: 9-17 栏目: 出版日期: 2023-04-15
Title:
Effects of Soil Salinity Stress on Tomato Growth,Ion Homeostasis and ROS Scavenging Ability
作者:
崔洪鑫; 柴亚倩; 关思慧; 万文亮; 刘慧英; 刁明
（石河子大学 农学院，特色果蔬栽培生理与种质资源利用兵团重点实验室，新疆 石河子 832003）
Author(s):
CUI Hongxin; CHAI Yaqian; GUAN Sihui; WAN Wenliang; LIU Huiying; DIAO Ming
(College of Agronomy,Shihezi University/Key Laboratory of Characteristic Fruit and Vegetable Cultivation Physiology and Germplasm Resource Utilization Corps,Xinjiang Production and Construction Corps,Shihezi,Xinjiang 832003)
关键词:
番茄; 盐碱胁迫; 离子稳态平衡; 抗氧化
Keywords:
tomato saline stress; ion balance; antioxidant system
DOI:
10.11937/bfyy.20223329
文献标志码:
A
摘要:
以C2和C5不同抗性番茄种质为试材,采用盆栽土培的方式，设置3个不同胁迫程度盐碱土处理，以当地非盐碱胁迫土壤为对照，研究了不同盐碱胁迫程度对2个番茄品种生长、离子平衡及活性氧（ROS）清除能力的影响差异及其与抗性的关系,以期明确其抗盐碱机制，为进一步全面解析番茄耐盐碱机制和抗盐碱育种提供参考依据。结果表明：盐碱胁迫对番茄表型的生长产生抑制，在生理响应方面，盐碱胁迫破坏了细胞膜完整性，使 H2O2含量、超氧阴离子产生速率和丙二醛含量增加，番茄通过提高抗氧化酶活性清除 ROS 维持植株的正常生理活动适应胁迫环境。盐碱胁迫使番茄过量吸收Na+从而抑制了对K+、Ca2+、Mg2+ 的吸收，降低 K+/Na+、Ca2+/Na+、Mg2+/Na+，影响细胞膜完整性和蛋白的合成；盐碱胁迫下，抗性强的C2品种较抗性弱的C5品种具有较强的〖JP2〗降低叶片和根系Na+的吸收、维持离子稳态平衡和较低氧化胁迫内环境的能力，因此生长受抑制程度显著低于C5品种。
Abstract:
Taking C2 and C5 tomato germplasm with different resistance as test materials,three saline-alkali treatments with different stress levels were set up by pot culture.The effects of different saline-alkali levels on the growth,ion balance and ROS scavenging capacity of two tomato varieties and their relationship with resistance were studied,in order to clarify their salt-alkali tolerance mechanism and provide reference for further comprehensive analysis of salt-alkali tolerance mechanism and salt-alkali tolerance breeding of tomato.The results showed that saline-alkali stress inhibited the growth of tomato phenotype,and in terms of physiological response,saline-alkali stress perocidated membrane lipids by increasing H2O2 content,superoxide anion production rate and malondialdehyde content,and tomatoes maintained normal physiological activities of plants by increasing antioxidant enzyme activity to clear ROS to adapt to the stress environment.Saline-alkali stress inhibited the absorption of K+,Ca2+,Mg2+,reduced K+/Na+,Ca2+/Na+,Mg2+/Na+,affected cell membrane integrity and protein synthesis by forcing tomatoes to absorb Na+.C5 remove ROS in time to adapt to stress environment by increasing antioxidant enzyme activity by higher magnitude,increase the absorption of Ca2+,K+,Mg2+ ions in the aboveground part,and reduced the ion toxicity caused by excessive absorption of Na+ ions to adapt to the environment.The above results showed that C5 cultivar exhibits more saline resistance than C2 by enhancing antioxidant enzyme activity and strong K+/Na+,Ca2+/Na+,Mg2+/Na+ to alleviate osmotic stress and reactive oxygen species damage caused by saline stress.

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备注/Memo

第一作者简介：崔洪鑫（1998-），男，硕士研究生，研究方向为设施蔬菜逆境生理。E-mail：c18899535650@163.com.责任作者：刁明（1968-），男，博士，教授，现主要从事园艺作物生理生态信息农业等研究工作。E-mail：diaoming@shzu.edu.cn.基金项目：国家自然科学基金-新疆联合基金重点资助项目（U1903202）。收稿日期：2022-08-13

更新日期/Last Update: 2023-04-27