天津农学院学报 ›› 2024, Vol. 31 ›› Issue (3): 33-38.doi: 10.19640/j.cnki.jtau.2024.03.007

• 研究与简报 • 上一篇    下一篇

OsARP基因拟南芥对盐胁迫的生理响应

鹿祥瑞, 费标欣, 张耀方, 李志斌, 罗峰, 裴忠有通信作者   

  1. 天津农学院 农学与资源环境学院 天津市主要农作物智能育种重点实验室,天津 300392
  • 收稿日期:2023-05-23 出版日期:2024-06-30 发布日期:2024-07-15
  • 通讯作者: 裴忠有(1967—),男,研究员,博士,主要从事农作物遗传育种及分子辅助育种方面研究。E-mail:zhongyoupei@tjau.edu.cn。
  • 作者简介:鹿祥瑞(1999—),女,硕士在读,主要从事农作物遗传育种方面研究。E-mail:17861622750@163.com。
  • 基金资助:
    国家重点研发计划“七大农作物育种”项目(2017YFD01005); 天津市科技计划项目(21YFSNSN00140)

Physiological responses of transgenic Arabidopsis thaliana with OsARP gene to salt stress

Lu Xiangrui, Fei Biaoxin, Zhang Yaofang, Li Zhibin, Luo Feng, Pei ZhongyouCorresponding Author   

  1. Tianjin Key Laboratory of Intelligent Breeding of Major Crops, College of Agronomy and Resources Environment, Tianjin Agricultural University, Tianjin 300392, China
  • Received:2023-05-23 Online:2024-06-30 Published:2024-07-15

摘要: 盐胁迫能影响植物体内物质合成、新陈代谢和生长发育,为探讨水稻生长素响应蛋白(Auxin response protein,OsARP)基因对盐胁迫的影响,本文以转OsARP基因拟南芥和野生型拟南芥为材料,采用4个浓度的NaCl(0、50、100、200 mmol/L)来胁迫处理拟南芥,并测定其农艺性状和生理指标。结果表明:转OsARP基因的拟南芥株系在200 mmol/L NaCl处理下,干重是野生型的5倍,鲜重则为野生型的2倍;根长比野生型高93%,株高是同处理下野生型的2倍;丙二醛(MDA)含量比野生型高25%,可溶性糖含量则比野生型低4.5%。在100 mmol/L NaCl处理下,转基因拟南芥叶绿素含量比野生型高26%,过氧化物酶(POD)活性比野生型高17.3%,过氧化氢酶(CAT)活性比野生型拟南芥高7倍,超氧化物歧化酶(SOD)活性则比野生型低15.6%。综合表明,OsARP基因提高了拟南芥的耐盐性,为OsARP基因功能机制研究打下了基础。

关键词: 水稻, OsARP基因, 盐胁迫, 逆境

Abstract: Salt stress has the effect of affecting the synthesis, metabolism, growth and development of plants in vivo. In order to investigate the effect of Auxin response protein (OsARP) gene on salt stress in rice, four concentrations of NaCl (0, 50, 100, 200 mmol/L) were used to treat Arabidopsis thaliana with OsARP gene and wild-type Arabidopsis thaliana, and their agronomic traits and physiological indexes were measured. The results showed that the dry weight of transgenic Arabidopsis thaliana were 5 times higher than that of wild type, and fresh weight were 2 times higher than that of wild type under 200 mmol/L NaCl treatment. The root length was 93% higher than that of the wild type, and the plant height was twice higher than that of the wild type. The malondialdehyde (MDA) content was 25% higher than that of the wild type, and the soluble sugar content was 4.5% lower than that of the wild type. Under 100 mmol/L NaCl treatment, the chlorophyll content of transgenic Arabidopsis thaliana was 26% higher than that of wild type, and the activity of peroxidase (POD) was 17.3% higher than that of wild type, and the activity of catalase (CAT) was 7 times higher than that of wild type, and the activity of superoxide dismutase (SOD) was 15.6% lower than that of wild type. The results showed that the OsARP gene improved the salt tolerance of Arabidopsis thaliana, which laid a foundation for the study of the functional mechanism of OsARP gene.

Key words: rice, OsARP gene, salt stress, adversity

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