ArticleBMC plant biology2020
Drought-hardening improves drought tolerance in Nicotiana tabacum at physiological, biochemical, and molecular levels.
Article in BMC plant biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 53 citations in OpenAlex.
- Review
- Genome-wide analysis of FATA associated with drought tolerance in tetraploid potato (Frontiers in plant science · 2026Article
- Transgenerational decline through insidious effects of drought memory.The New phytologist · 2025Article
- Evaluating Drought Tolerance inInternational journal of molecular sciences · 2025Article
- Overexpression ofInternational journal of molecular sciences · 2024Article
- Drought stress mitigation through bioengineering of microbes and crop varieties for sustainable agriculture and food security.Current research in microbial sciences · 2024Review
- Effect of drought acclimation on antioxidant system and polyphenolic content of Foxtail Millet (Physiology and molecular biology of plants : an international journal of functional plant biology · 2023Review
- Biochemical and Epigenetic Modulations under Drought: Remembering the Stress Tolerance Mechanism in Rice.Life (Basel, Switzerland) · 2023Article
- Stress memory and its regulation in plants experiencing recurrent drought conditions.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Review
- Arbuscular mycorrhizal fungi improve the growth and drought tolerance ofEcology and evolution · 2022Article
- Proteomic Investigation of Molecular Mechanisms in Response to PEG-Induced Drought Stress in Soybean Roots.Plants (Basel, Switzerland) · 2022Article
- Physio-Morphological, Biochemical and Transcriptomic Analyses Provide Insights Into Drought Stress Responses inFrontiers in plant science · 2022Article
- Effects of repeated drought stress on the physiological characteristics and lipid metabolism of Bombax ceiba L. during subsequent drought and heat stresses.BMC plant biology · 2021Article
- Effect of progressive drought stress on physio-biochemical responses and gene expression patterns in wheat.3 Biotech · 2021Article
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundDrought stress is the most harmful one among other abiotic stresses with negative impacts on crop growth and development. Drought-hardening is a feasible and widely used method in tobacco seedlings cultivation. It has gained extensive interests due to its role in improving drought tolerance. This research aimed to investigate the role of drought-hardening and to unravel the multiple mechanisms underlying tobacco drought tolerance and adaptation.
resultsThis study was designed in which various drought-hardening treatments (CK (no drought-hardening), T1 (drought-hardening for 24 h), T2 (drought-hardening for 48 h), and T3 (drought-hardening for 72 h)) were applied to two tobacco varieties namely HongHuaDaJinYuan (H) and Yun Yan-100 (Y). The findings presented a complete framework of drought-hardening effect at physiological, biochemical, and gene expression levels of the two tobacco varieties under drought stress. The results showed that T2 and T3 significantly reduced the growth of the two varieties under drought stress. Similarly, among the various drought-hardening treatments, T3 improved both the enzymatic (POD, CAT, APX) and non-enzymatic (AsA) defense systems along with the elevated levels of proline and soluble sugar to mitigate the negative effects of oxidative damage and bringing osmoregulation in tobacco plants. Finally, the various drought-hardening treatments (T1, T2, and T3) showed differential regulation of genes expressed in the two varieties, while, particularly T3 drought-hardening treatment-induced drought tolerance via the expression of various stress-responsive genes by triggering the biosynthesis pathways of proline (P5CS1), polyamines (ADC2), ABA-dependent (SnRK2, AREB1), and independent pathways (DREB2B), and antioxidant defense-related genes (CAT, APX1, GR2) in response to drought stress.
conclusionsDrought-hardening made significant contributions to drought tolerance and adaptation in two tobacco variety seedlings by reducing its growth and, on the other hand, by activating various defense mechanisms at biochemical and molecular levels. The findings of the study pointed out that drought-hardening is a fruitful strategy for conferring drought tolerance and adaptations in tobacco. It will be served as a useful method in the future to understand the drought tolerance and adaptation mechanisms of other plant species. Drought-hardening improved drought tolerance and adaptation of the two tobacco varieties. T1 indicates drought-hardening for 24 h, T2 indicates drought-hardening for 48 h, T3 indicates drought-hardening for 72 h.
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