Circadian Rhythm Regulates Reactive Oxygen Species Production and Inhibits Al-Induced Programmed Cell Death in Peanut

被引:1
|
作者
Ntambiyukuri, Aaron [1 ]
Li, Xia [1 ]
Xiao, Dong [1 ,2 ,3 ]
Wang, Aiqin [1 ,2 ,3 ]
Zhan, Jie [1 ,2 ,3 ]
He, Longfei [1 ,2 ,3 ]
机构
[1] Guangxi Univ, Coll Agr, Natl Demonstrat Ctr Expt Plant Sci Educ, Nanning 530004, Peoples R China
[2] Guangxi Key Lab Agroenvironm & Agroprod Safety, Nanning 530004, Peoples R China
[3] Guangxi Coll & Univ Key Lab Crop Cultivat & Tilla, Nanning 530004, Peoples R China
来源
LIFE-BASEL | 2022年 / 12卷 / 08期
基金
美国国家科学基金会;
关键词
circadian clock; reactive oxygen species; Al-induced PCD; photoperiodism; peanut; ALUMINUM TOLERANCE; MAPPING QTLS; STRESS; ARABIDOPSIS; IDENTIFICATION; PHOTOPERIOD; CLOCK; GENES; RICE; EXPRESSION;
D O I
10.3390/life12081271
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Peanut is among the most important oil crops in the world. In the southern part of China, peanut is highly produced; however, the arable land is acidic. In acidic soils, aluminum (Al) inhibits plant growth and development by changing the properties of the cell wall and causing the disorder of the intracellular metabolic process. Circadian rhythm is an internal mechanism that occurs about every 24 h and enables plants to maintain internal biological processes with a daily cycle. To investigate the effect of photoperiod and Al stress on the Al-induced programmed cell death (PCD), two peanut varieties were treated with 100 mu M AlCl3 under three photoperiodic conditions (8/16, SD; 12/12, ND; 16/8 h, LD). The results show that Al toxicity was higher in ZH2 than in 99-1507 and higher under LD than under SD. Root length decreased by 30, 37.5, and 50% in ZH2 and decreased by 26.08, 34.78, and 47.82% in 99-1507 under SD, ND, and LD, respectively, under Al stress. Photoperiod and Al induced cell death and ROS production. MDA content, PME activity, and LOX activity increased under SD, ND, and LD, respectively, under Al stress both in ZH2 and 99-1507. APX, SOD, CAT, and POD activities were higher under SD, ND, and LD, respectively. Al stress increased the level of AhLHY expression under SD and ND but decreased it under LD in both ZH2 and 99-1507. Contrastingly, AhSTS expression levels increased exponentially and were higher under SD, LD, and ND, respectively, under Al stress. Our results will be a useful platform to research PCD induced by Al and gain new insights into the genetic manipulation of the circadian clock for plant stress response.
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页数:15
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