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植物研究 ›› 2023, Vol. 43 ›› Issue (3): 388-395.doi: 10.7525/j.issn.1673-5102.2023.03.008

• 生理与生态 • 上一篇    下一篇

水杨酸、纳米氧化锌和促生真菌YZ13-1在水曲柳抵御干旱胁迫中的调控作用

申晨静1, 武文博1, 耿露冉1, 王福龙2, 赵鹏舟2, 宋金辉2, 詹亚光1,3, 尹静1,3()   

  1. 1.东北林业大学生命科学学院,哈尔滨 150040
    2.齐齐哈尔龙江县错海林场,齐齐哈尔 161100
    3.东北林业大学东北盐碱植被恢复与重建教育部重点实验室,哈尔滨 1500401
  • 收稿日期:2022-10-03 出版日期:2023-05-20 发布日期:2023-05-11
  • 通讯作者: 尹静 E-mail:yinjing20135@163.com
  • 作者简介:申晨静(1995—),女,硕士研究生,主要从事植物次生代谢调控研究。
  • 基金资助:
    国家重点研发计划项目(2021YFD2200303)

Regulatory Effects of Salicylic Acid,Nano-zinc Oxide and Growth-promoting Fungi YZ13-1 on the Resistance to Drought Stress of Fraxinus mandshurica

Chenjing SHEN1, Wenbo WU1, Luran GENG1, Fulong WANG2, Pengzhou ZHAO2, Jinhui SONG2, Yaguang ZHAN1,3, Jing YIN1,3()   

  1. 1.College of Life Sciences,Northeast Forestry University,Harbin 150040
    2.Longjiang County Cuohai Forest Farm of Qiqihar,Qiqihar 161100
    3.Key Laboratory of Saline-alkali Vegetation Ecology Restoration,Ministry of Education,Northeast Forestry University,Harbin 150040
  • Received:2022-10-03 Online:2023-05-20 Published:2023-05-11
  • Contact: Jing YIN E-mail:yinjing20135@163.com
  • About author:SHEN Chenjing(1995—),female,master candidate,major in plant secondary metabolism regulation.
  • Supported by:
    National Key Research and Development program(2021YFD2200303)

摘要:

为探究水杨酸(SA)、纳米氧化锌(ZnO NPs)和促生内生真菌YZ13-1(Fusarium graminearum)对水曲柳(Fraxinus mandshurica)幼苗耐旱性的影响,以2年生盆栽水曲柳为材料,设置5组处理:T1,干旱胁迫处理(土壤含水量为20%~25%);T2、T3和T4组在T1组处理的基础上分别施加50 mg·L-1 SA,100 mg·L-1 ZnO NPs,促生真菌YZ13-1悬液;CK,对照组(土壤含水量为50%~55%)。结果表明:与T1组相比,T2组的过氧化物酶(POD)、抗坏血酸过氧化物酶(APX)和过氧化氢酶(CAT)活性均提高了2倍,可溶性糖(SS)、脯氨酸(PRO)和酚类物质含量分别增加了44%、60%、16%,同时叶片相对电导率(RWC)降低了14%。与内生真菌和ZnO NPs相比,SA更能显著提高干旱胁迫下的水曲柳的抗逆酶活性,增加渗透物质和酚类物质含量,进而提高抗旱能力。研究明确了3种诱导处理均可提高水曲柳抗旱性,且以SA处理效果最佳,为水曲柳抗旱剂的筛选提供了理论依据。

关键词: 水曲柳, 水杨酸, 纳米氧化锌, 内生真菌, 抗旱性

Abstract:

To investigate the effects of salicylic acid(SA), nano-zinc oxide(ZnO NPs) and growth-promoting endophytic fungus YZ13-1(Fusarium graminearum) on drought tolerance of Fraxinus mandshurica seedlings. Two years old potted F. mandshurica seedlings were used as materials and 5 groups of treatments were set in this experiment:T1,drought stress treatment (soil water content was 20%-25%); T2, T3 and T4 groups were additionally treated with 50 mg·L-1 SA,100 mg·L-1 ZnO NPs, growth-promoting fungus YZ13-1 suspension on the basis of T1 group; CK, control group(soil water content was 50%-55%). The results showed that compared with T1 group, the activities of peroxidase(POD), ascorbate peroxidase(APX), catalase(CAT) were increased by 2 times, soluble sugar(SS), proline(PRO) and phenolic substances increased by 44%, 60%, 16%, and relative electrical conductivity(RWC) of leaves decreased by 14% in T2 group. Compared with endophytic fungi and ZnO NPs, SA could significantly increase the anti-stress enzyme activity, increase the contents of osmotic substances and phenolic substances, and thus improve the drought resistance ability of F. mandshurica under drought stress. The study clarified that three induction treatments could improve the drought resistance of F. mandshurica, and SA treatment was the best, providing a theoretical basis for screening drought resistance agents of F. mandshurica.

Key words: Fraxinus mandshurica, salicylic acid, Nano-zinc oxide, endophytic fungi, drought resistance

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