数字农科院2.0

IAA Accumulation Promotes the Root Growth of Tea Plants under Aluminum

文献类型： 外文期刊

作者： Yaoyao Gao;Min Wang;Yifan Shi;Liu Yang;Jianhui Hu;Kai Fan;Yuanzhi Shi

作者机构：

关键词： Al;Camellia sinensis;indole acetic acid (IAA);phytohormone;root

期刊名称： Agronomy

ISSN： 2073-4395

年卷期： 2022 年 12 卷 5 期

页码：

摘要： A moderate supply of aluminum (Al) can promote the root growth of plant species, such as tea, that have adapted to acid soils. The formation and development of roots are regulated by phytohormones. However, the role that phytohormones play in facilitating the beneficial effects of Al on root growth is unclear. In the present study, tea plants cultured hydroponically with either 0 or 0.4 mmol·L−1 Al were characterized and compared in terms of root growth, hormone concentrations, and the expression of related genes. The hormone content in tea roots was measured by UPLC–MS, and the expression levels of genes involved in phytohormone biosynthesis, transport, and response were analyzed by qRT-PCR. Our results showed that the indole acetic acid (IAA) concentrations in the root base were significantly higher in plants supplied with Al compared to control plants without Al during the experimental period from 6 h to 7 d. By using inhibitors of IAA synthesis and transport, we found that Al induces short-term IAA synthesis in the root tip and enhances IAA transport in other parts of the root over the longer term, thus promoting root growth in tea plants by limiting IAA accumulation. The expression levels of genes YUC8 and AMI1, involved in IAA accumulation, were consistently upregulated in the root tip, whereas expression of PIN1/2/8, involved in IAA transport, was induced in the root base under Al supply at 6 h. In addition, the expression of PIN2 and PIN5 was highly induced in root stem by Al after 7 d and probably contributed to alleviating IAA accumulation in the root tip and thereby promoted root growth in tea plants. Meanwhile, the XET and expansin activities were increased under Al supply at 6 h. Thus, we conclude that the mechanism of Al-induced root growth is mediated by auxin accumulation and transport in cooperation with cell wall loosening in tea plants.

分类号：

  • 相关文献

[1]Characterization of fluoride uptake by roots of tea plants (Camellia sinensis (L.) O. Kuntze). Zhang, Lei,Li, Qiong,Ma, Lifeng,Ruan, Jianyun,Zhang, Lei,Li, Qiong,Ma, Lifeng,Ruan, Jianyun.

[2]Identification and expression profiling of the auxin response factors (ARFs) in the tea plant (Camellia sinensis (L.) O. Kuntze) under various abiotic stresses. Xu, Yan-Xia,Mao, Juan,Chen, Wei,Qian, Ting-Ting,Liu, Sheng-Chuan,Hao, Wan-Jun,Li, Chun-Fang,Chen, Liang.

[3]Genome-Wide Identification and Characterization of Tea SGR Family Members Reveal Their Potential Roles in Chlorophyll Degradation and Stress Tolerance. Hengze Ren,Yating Yu,Chao Huang,Danying Li,Jiale Ni,Wuyun Lv,Kang Wei,Liyuan Wang,Yuchun Wang. 2024

[4]Immunotoxicity of aluminum. Zhu, Yanzhu,Miao, Liguang,Wang, Yingping,Liu, Yanhuan,Yan, Xijun,Cui, Xuezhe,Li, Haitao,Zhu, Yanzhu,Li, Yanfei.

[5]Effects of Al on the splenic immune function and NE in rats. Hu, Chongwei,Li, Jing,Hu, Chongwei,Zhu, Yanzhu,Bai, Chongsheng,Zhang, Jihong,Xia, Shiliang,Li, Yanfei,Zhu, Yanzhu. 2013

[6]The genetic basic and fine-mapping of a stable quantitative-trait loci for aluminium tolerance in rice. Xue, Y.,Jiang, L.,Su, N.,Wang, J. K.,Deng, P.,Ma, J. F.,Zhai, H. Q.,Wan, J. M..

[7]Comparative Proteomic Analysis Reveals Differential Root Proteins in Medicago sativa and Medicago truncatula in Response to Salt Stress. Long, Ruicai,Zhang, Tiejun,Kang, Junmei,Cong, Lili,Gao, Yanli,Yang, Qingchuan,Li, Mingna,Sun, Yan,Liu, Fengqi. 2016

[8]Can surface residue alleviate water and heat stress?. Wang, H.,Gan, Y.,Brandt, K.,He, Y.,Qin, X.,Li, Z.. 2015

[9]De novo sequencing and analysis of root transcriptome using 454 pyrosequencing to discover putative genes associated with drought tolerance in Ammopiptanthus mongolicus. Zhou, Yijun,Gao, Fei,Liu, Ran,Feng, Jinchao,Gao, Fei,Li, Hongjie. 2012

[10]Effects of rhizobacteria on the respiration and growth of Cerasus sachalinensis Kom. seedlings. Qin, Sijun,Zhou, Wenjie,Li, Zhixia,Lyu, Deguo,Li, Zhixia. 2016

[11]A distinctive root-inhabiting denitrifying community with high N2O/(N2O+N-2) product ratio. Ai, Chao,Liang, Guoqing,Wang, Xiubin,Sun, Jingwen,He, Ping,Zhou, Wei,He, Ping.

[12]Comparative Analysis of the Brassica napus Root and Leaf Transcript Profiling in Response to Drought Stress. Liu, Chunqing,Zhang, Ka,An, Hong,Hu, Kaining,Wen, Jing,Shen, Jinxiong,Ma, Chaozhi,Yi, Bin,Tu, Jinxing,Fu, Tingdong,Zhang, Xuekun. 2015

[13]Cloning and characterization of a putative 12-oxophytodienoic acid reductase cDNA induced by osmotic stress in roots of foxtail millet. Zhang, Jin-Peng,Liu, Ting-Song,Zheng, Jun,Jin, Zheng,Zhu, Yun,Guo, Jiu-Feng,Wang, Guo-Ying.

[14]Effects of Organic Fertilizer on the Contents and Distribution of Heavy Metals in Spinach. Rui Yukui,Zheng Chuangmu,Wu Wei.

[15]iTRAQ-based quantitative proteomic analysis of wheat roots in response to salt stress. Jiang, Qiyan,Niu, Fengjuan,Sun, Xianjun,Hu, Zheng,Zhang, Hui,Li, Xiaojuan.

[16]Locating QTLs controlling several adult root traits in an elite Chinese hybrid rice. Cao, Li Yong.

[17]Responses of Wheat Roots to Exogenous Selenium Supply Under Enhanced Ultraviolet-B. Yao, Xiaoqin,Chu, Jianzhou,Ba, Chaojie,Yao, Xiaoqin. 2010

[18]Transcriptome analysis reveals salt-stress-regulated biological processes and key pathways in roots of cotton (Gossypium hirsutum L.). Yao, Dongxia,Wang, Chunchao,Zhang, Zhenghai,Wei, Qiang,Yan, Hong,Su, Zhen,Zhang, Xueyan,Zhao, Xinhua,Liu, Chuanliang,Zhang, Chaojun,Wang, Qianhua,Li, Fuguang. 2011

[19]Root genetic research, an opportunity and challenge to rice improvement. Cheng, Shihua.

[20]Rhizobium wenxiniae sp nov., an endophytic bacterium isolated from maize root. Gao, Jun-lian,Wang, Xu-ming,Sun, Pengbo,Lv, Fan-yang,Mao, Xiao-jie,Sun, Jian-guang.

作者其他论文 更多>>