Cited by 218Plant Stress Responses and ToleranceAluminum toxicity and tolerance in plants and animalsRice Cultivation and Yield Improvement

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

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Zhang, Hui, Liu, Xiao-Long, Zhang, Rui-Xue, Yuan, Hai-Yan, Wang, Ming-Ming, Yang, Hao-Yu, Ma, Hong-Yuan, Liu, Duo +2 more·2017·Frontiers in Plant Science

Abstract

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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  • Soil alkalinity, characterized by higher pH (8.5-11), disrupts cellular stability and destroys the membrane stability and root activity of plants.

    “higher pH (8.5-11), disrupts cellular stability and destroys the membrane stability and root activity of plants [64].”

    From Soy Molasses as Culture Medium for Bacillus Species Aiming at Plant Growth Promotion (2024) · cites this paper as [64]

    The Introduction gives a pH range of 8.5–11 for saline–alkaline soils, and the Abstract reports increased membrane injury and reduced root vigor under alkaline stress. Those damage findings are from rice seedlings, so the claim's extension to plants generally is not established by this study. Page numbers are not provided in our copy. (LLM, conf=0.84)

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2 of the 66 references couldn’t be matched to a known paper.

Research works printed but not linked: 4

  1. Amini S. Ghadiri H. Chen C. Marschner P. (2016). Salt-affected soils, reclamation, carbon dynamics, and biochar: a review. J. Soils Sediments 16 939– 953.
  2. Feng Z. H. Liu X. L. Jiang C. J. Liang Z. W. (2016). Comprehensive evaluation of rice (Oryza sativa japonica) germplasm for alkaline and saline tolerance at germination stage from Jilin province, China. Soils Crops 5 120– 127. 10.11689/j.issn.2095-2961.02.009 · DOI
  3. Hossner L. (2008). “Field pH,” in Encyclopedia of Soil Science, ed. Chesworth W. (Berlin: Springer), 271– 272.
  4. Yang F. Liang Z. W. Wang Z. C. (2011). Breeding and cultivation techniques of new rice variety of Dongdao 4. Crops 2 111 10.16035/j.issn.1001-7283.2011.02.027 · DOI

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Authors
Zhang, H., Liu, X.-L., Zhang, R.-X., Yuan, H.-Y., Wang, M.-M., Yang, H.-Y., Ma, H.-Y., Liu, D., Jiang, C.-J., & Liang, Z.-W.
Affiliations
  • Chinese Academy of Sciences (CN)
  • National Agriculture and Food Research Organization (JP)
Corresponding author
Jiang, Chang-Jie
Venue
Frontiers in Plant Science
Published
2017-09-08
Volume
8
Pages
1580-1580
ISSN
1664-462X (ISSN-L)
OpenAlex
W2751550853
Cited by
218
References
66
Citations by year
2026: 29 · 2025: 37 · 2024: 36 · 2023: 39 · 2022: 33 · 2021: 19 · 2020: 7 · 2019: 12 · 2018: 5 · 2017: 1
FWCI
6.73
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Plant Science (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Aluminum toxicity and tolerance in plants and animals
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Rice Cultivation and Yield Improvement
Keywords
alkaline stress, rice, reactive oxygen species, seedling growth inhibition, superoxide, hydrogen peroxide, oxidative stress, cell death genes, procyanidins, antioxidant enzymes, alkaline tolerance, sodium carbonate, malondialdehyde, membrane damage

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