Priming effect of abscisic acid on alkaline stress tolerance in rice (Oryza sativa L.) seedlings

Wei, Lixing; Lv, Bingsheng; Wang, Mingming; Ma, Hongling; Yang, Haoyu; Liu, Xiaolong; Jiang, Chang‐Jie; Liang, Zhengwei

doi:10.1016/j.plaphy.2015.03.002

Cited by 75 publications

(44 citation statements)

References 33 publications

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“…High alkalinity (high pH) leads to deficiencies in nutritional minerals such as iron and phosphorus in the soil, and causes acute physiological stress to plants, which in turn, severely limits plant growth and agricultural productivity ( Abrol et al, 1988 ; Qadir et al, 2006 , 2007 ; Hossner, 2008 ; Wang et al, 2009 ; Amini et al, 2016 ). We previously reported that alkaline treatment markedly reduced rice seedling survival and total biomass, with the most serious adverse impact observed on root growth ( Lv et al, 2013 ; Wei et al, 2015 ). It has been shown to cause severe damage to the root system, as demonstrated by a marked increase in cell injury and in the expression of the cell death-related gene OsNAC4 ( Lv et al, 2013 ; Wei et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

“…We previously reported that alkaline treatment markedly reduced rice seedling survival and total biomass, with the most serious adverse impact observed on root growth ( Lv et al, 2013 ; Wei et al, 2015 ). It has been shown to cause severe damage to the root system, as demonstrated by a marked increase in cell injury and in the expression of the cell death-related gene OsNAC4 ( Lv et al, 2013 ; Wei et al, 2015 ). Consistently, Guo et al (2014) showed that the alkaline-tolerant rice mutant alt1 retained an intact root morphology under alkaline stress.…”

Section: Discussionmentioning

confidence: 99%

“…It appears that the alkaline tolerance of rice plants is correlated with ROS-scavenging capability, as observed with salt tolerance ( Kao, 2017 ). We previously reported that priming rice seedlings with abscisic acid (ABA) significantly mitigated damage to root cells and decreased seedling mortality and growth inhibition in response to alkaline stress, under both laboratory and field conditions ( Wei et al, 2015 , 2017 ). It would be interesting to determine whether the priming effect of ABA on alkaline tolerance is also associated with ROS homeostasis.…”

Section: Discussionmentioning

confidence: 99%

“…High pH conditions impose severe damage stress on rice seedling growth by causing serious root cell injury and death, which, consequently, results in whole-plant wilting and even death ( Lv et al, 2013 ; Guo et al, 2014 ; Wei et al, 2015 ). However, the molecular mechanism responsible for root damage by alkaline stress remains largely unknown.…”

Section: Introductionmentioning

confidence: 99%

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Root Damage under Alkaline Stress Is Associated with Reactive Oxygen Species Accumulation in Rice (Oryza sativa L.)

et al. 2017

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Alkaline stress (high pH) severely damages root cells, and consequently, inhibits rice (Oryza sativa L.) seedling growth. In this study, we demonstrate the accumulation of reactive oxygen species (ROS) in root cells under alkaline stress. Seedlings of two rice cultivars with different alkaline tolerances, ‘Dongdao-4’ (moderately alkaline-tolerant) and ‘Jiudao-51’ (alkaline-sensitive), were subjected to alkaline stress simulated by 15 mM sodium carbonate (Na2CO3). Alkaline stress greatly reduced seedling survival rate, shoot and root growth, and root vigor. Moreover, severe root cell damage was observed under alkaline stress, as shown by increased membrane injury, malondialdehyde accumulation, and Evan’s Blue staining. The expression of the cell death-related genes OsKOD1, OsHsr203j, OsCP1, and OsNAC4 was consistently upregulated, while that of a cell death-suppressor gene, OsBI1, was downregulated. Analysis of the ROS contents revealed that alkaline stress induced a marked accumulation of superoxide anions (O2•-) and hydrogen peroxide (H2O2) in rice roots. The application of procyanidins (a potent antioxidant) to rice seedlings 24 h prior to alkaline treatment significantly alleviated alkalinity-induced root damage and promoted seedling growth inhibition, which were concomitant with reduced ROS accumulation. These results suggest that root cell damage, and consequently growth inhibition, of rice seedlings under alkaline stress is closely associated with ROS accumulation. The antioxidant activity of superoxide dismutase, catalase, peroxidase, and ascorbate peroxidase increased under alkaline stress in the roots, probably in response to the cellular damage induced by oxidative stress. However, this response mechanism may be overwhelmed by the excess ROS accumulation observed under stress, resulting in oxidative damage to root cells. Our findings provide physiological insights into the molecular mechanisms of alkalinity-induced damage to root cells, and will contribute to the improvement of alkaline stress tolerance in rice plants.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Root Damage under Alkaline Stress Is Associated with Reactive Oxygen Species Accumulation in Rice (Oryza sativa L.)

et al. 2017

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“…ABA has been applied to increase accumulation of secondary metabolites and improve growth in the skin of vegetables and fruits. The concentrations used in this study were chosen based on those applied on other species [ 18 , 23 , 24 , 25 ]. In this study, the exogenous application of ABA significantly induced the accumulation of glycyrrhizin ( I ), liquiritin ( II ), isoliquiritin ( III ), liquiritigenin ( IV ), and isoliquiritigenin ( V ).…”

Section: Discussionmentioning

confidence: 99%

Effect of Abscisic Acid on Accumulation of Five Active Components in Root of Glycyrrhiza uralensis

Qiao

Luo

et al. 2017

Molecules

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Licorice is one of the most generally used herbal medicines in the world; however, wild licorice resources have decreased drastically. Cultivated Glycyrrhiza uralensis Fischer are the main source of licorice at present, but the content of main active components in cultivated G. uralensis are lower than in wild G. uralensis. Therefore, the production of high-quality cultivated G. uralensis is an urgent issue for the research and production fields. In this study, the content of five active components and seven endogenous phytohormones in cultivated G. uralensis (two-year-old) were determined by high-performance liquid chromatography (HPLC) and enzyme-linked immunosorbent assay (ELISA), respectively. Furthermore, different concentrations (25–200 mg/L) of exogenous abscisic acid (ABA) were sprayed on the leaves of G. uralensis in the fast growing period. Results showed that ABA, zeatin riboside (ZR), and dihydrozeatin riboside (DHZR) had strong correlation with active components. In addition, the content of five active components increased remarkably after ABA treatment. Our results indicate that ABA is significantly related to the accumulation of active components in G. uralensis, and the application of exogenous ABA at the proper concentration is able to promote the accumulation of main components in G. uralensis.

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Does Seed Priming Play a Role in Regulating Reactive Oxygen Species Under Saline Conditions?

Mansour

Ali

Salama

2019

Reactive Oxygen, Nitrogen and Sulfur Species in Plants

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Priming effect of abscisic acid on alkaline stress tolerance in rice (Oryza sativa L.) seedlings

Cited by 75 publications

References 33 publications

Root Damage under Alkaline Stress Is Associated with Reactive Oxygen Species Accumulation in Rice (Oryza sativa L.)

Root Damage under Alkaline Stress Is Associated with Reactive Oxygen Species Accumulation in Rice (Oryza sativa L.)

Effect of Abscisic Acid on Accumulation of Five Active Components in Root of Glycyrrhiza uralensis

Does Seed Priming Play a Role in Regulating Reactive Oxygen Species Under Saline Conditions?

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