文献类型： 外文期刊

作者： Li, Juanjuan ¹ ; Pan, Jianmin ¹ ; Najeeb, Ullah ³ ; El-Beltagi, Hossam S. S. ⁵ ; Huang, Qian ² ; Lu, Huaijian ¹ ; Xu, Ling ¹ ; Shi, Bixian ⁷ ; Zhou, Weijun ² ;

作者机构： 1.Zhejiang Sci Tech Univ, Coll Life Sci & Med, Key Lab Plant Secondary Metab & Regulat Zhejiang P, Hangzhou 310018, Peoples R China

2.Zhejiang Univ, Inst Crop Sci, Lab Spect Sensing, Minist Agr & Rural Affairs, Hangzhou 310058, Peoples R China

3.Univ Queensland, Ctr Plant Sci, Queensland Alliance Agr & Food Innovat, Toowoomba, Qld 4350, Australia

4.Qatar Univ, Off VP Res & Grad Studies, Agr Res Stn, Doha, Qatar

5.King Faisal Univ, Coll Agr & Food Sci, Agr Biotechnol Dept, Al Hasa 31982, Saudi Arabia

6.Cairo Univ, Fac Agr, Biochem Dept, Giza 12613, Egypt

7.Xinjiang Acad Agr Sci, Inst Econ Crops, Urumqi 830091, Peoples R China

关键词： 5-aminolevulinic acid; salicylic acid; citric acid; Mn absorption; antioxidant defense system

期刊名称：ANTIOXIDANTS （ 影响因子：7.0； 五年影响因子：7.3 ）

ISSN：

年卷期： 2023 年 12 卷 3 期

页码：

收录情况： SCI

摘要： Manganese (Mn) is an essential nutrient in most organisms. Establishing an effective regulatory system of Mn absorption is important for sustainable crop development. In this study, we selected sunflower as the model plant to explore the effects of 5-aminolevulinic acid (ALA) or salicylic acid (SA) combined with citric acid (CA) on Mn absorption. Six-leaf-old sunflower plants were exposed to 0.8 g kg(-1) Mn for one week and then treated with chelating agents, i.e., CA (10 mmol kg(-1)), and different concentrations of ALA and SA for one week. The results showed that Mn-treated plants had significantly increased H2O2, O-2(-) and MDA contents in leaves compared with the control. Under the Mn + CA treatment, ALA or SA2 significantly activated the antioxidant defense system by increasing SOD, POD and CAT activities in leaves. Moreover, the application of CA significantly increased the Mn uptake in sunflower roots compared with Mn treatment alone; however, did not accelerate the translocation efficiency of Mn from sunflower roots to shoots. Moreover, ultrastructural and RT-qPCR results further demonstrated that ALA/SA could recover the adverse impact of excessive Mn accumulation in sunflowers. Like a pump, ALA/SA regulated the translocation efficiency and promoted the transportation of Mn from roots to shoots. This study provides insights into the promotive role of ALA/SA combined with CA on sunflower growth by regulating Mn absorption, which would be beneficial for regulating Mn absorption in soil with an Mn deficit.