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Triacontanol delivery by nano star shaped polymer promoted growth in maize

文献类型： 外文期刊

作者： Jiang, Bingyao 1 ; Yang, Jia 1 ; Zhong, Xingyu 1 ; Yan, Shuo 3 ; Yin, Meizhen 5 ; Shen, Jie 3 ; Lei, Bin 6 ; Li, Zhaohu 1 ; Zhou, Yuyi 1 ; Duan, Liusheng 1 ;

作者机构： 1.China Agr Univ, Engn Res Ctr Plant Growth Regulator, State Key Lab Plant Environm Resilience, Minist Educ, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China

2.China Agr Univ, Coll Agron & Biotechnol, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China

3.China Agr Univ, Dept Plant Biosecur, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China

4.China Agr Univ, MOA Key Lab Monitoring & Green Management, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China

5.Beijing Univ Chem Technol, Beijing Lab Biomed Mat, State Key Lab Chem Resource Engn, 15 North 3rd Ring East Rd 15, Beijing 100029, Peoples R China

6.Xinjiang Acad Agr Sci, Urumqi 830091, Peoples R China

7.Beijing Univ Agr, Coll Plant Sci & Technol, Beijing 102206, Peoples R China

关键词： Maize; Nano -delivery; Plant growth regulator; Star polymer; Triacontanol

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：6.1； 五年影响因子：6.2 ）

ISSN： 0981-9428

年卷期： 2024 年 213 卷

页码：

收录情况： SCI

摘要： Plant Growth Regulators (PGRs) are functional compounds known for enhancing plant growth and development. However, their environmental impact is a concern due to poor water solubility and the need for substantial organic solvents. Recently, nano-delivery systems have emerged as a solution, offering a broad range of applications for small molecule compounds. This study introduces a nano-delivery system for Triacontanol (TA), utilizing a star polymer (SPc), aimed at promoting maize growth and improving physiological indicators. The system forms nearly spherical nanoparticles through TA's hydroxyl group and SPc's tertiary amine group. The TA/SPc nano-complex notably outperforms separate TA or SPc treatments in maize, increasing biomass, chlorophyll content, and nutrient absorption. It elevates chlorophyll content by 16.4%, 10.0%, and 6.2% over water, TA, and SPc treatments, respectively, and boosts potassium and nitrate ion uptake by up to 2 and 1.6 times compared to TA alone, leading to enhanced plant height and leaf growth. qRT-PCR analysis further demonstrated that the nano-complex enhanced cellular uptake through the endocytosis pathway by up-regulating endocytosisrelated gene expression. The employment of TEM to observe vesicle formation during the internalization of maize leaves furnishes corroborative evidence for the participation of the endocytosis pathway in this process. This research confirms that SPc is an effective carrier for TA, significantly enhancing biological activity and reducing TA dosage requirements.

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