ArticleJournal of experimental botany2013
Haem oxygenase modifies salinity tolerance in Arabidopsis by controlling K⁺ retention via regulation of the plasma membrane H⁺-ATPase and by altering SOS1 transcript levels in roots.
Article in Journal of experimental botany, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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33 citing papers in PubMed, 79 citations in OpenAlex.
- Advances in deciphering the mechanisms of salt tolerance in Maize.Plant signaling & behavior · 2025Review
- Ameliorating effect of zinc on water transport in rice plants under saline-sodic stress.Frontiers in plant science · 2025Article
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- Expression of the wheat multipathogen resistance hexose transporter Lr67res is associated with anion fluxes.Plant physiology · 2023Article
- Interaction Network Construction and Functional Analysis of the Plasma Membrane HInternational journal of molecular sciences · 2023Article
- Natural variation inHorticulture research · 2023Article
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- Salt-Induced Changes in Cytosolic pH and Photosynthesis in Tobacco and Potato Leaves.International journal of molecular sciences · 2022Article
- Ionizing Radiation: Effective Physical Agents for Economic Crop Seed Priming and the Underlying Physiological Mechanisms.International journal of molecular sciences · 2022Review
- Identification and Characterization of the Core Region ofInternational journal of molecular sciences · 2022Article
- Hypoxia-induced increase in GABA content is essential for restoration of membrane potential and preventing ROS-induced disturbance to ion homeostasis.Plant communications · 2021Article
- Protein Phosphorylation Response to Abiotic Stress in Plants.Methods in molecular biology (Clifton, N.J.) · 2021Review
- Response Mechanisms of Plants Under Saline-Alkali Stress.Frontiers in plant science · 2021Review
- GABA operates upstream of H+-ATPase and improves salinity tolerance in Arabidopsis by enabling cytosolic K+ retention and Na+ exclusion.Journal of experimental botany · 2019Article
- Ionic selectivity and coordinated transport of NaPlanta · 2019Article
- Root-zone-specific sensitivity of K+-and Ca2+-permeable channels to H2O2 determines ion homeostasis in salinized diploid and hexaploid Ipomoea trifida.Journal of experimental botany · 2019Article
- Co-expression of SpSOS1 and SpAHA1 in transgenic Arabidopsis plants improves salinity tolerance.BMC plant biology · 2019Article
- The Arabidopsis CaInternational journal of molecular sciences · 2018Article
- Over-expression of a plasma membrane HProtoplasma · 2018Article
- Identification and characterization of evolutionarily conserved alternative splicing events in a mangrove genus Sonneratia.Scientific reports · 2018Article
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Reactive oxygen species (ROS) production is a common denominator in a variety of biotic and abiotic stresses, including salinity. In recent years, haem oxygenase (HO; EC 1.14.99.3) has been described as an important component of the antioxidant defence system in both mammalian and plant systems. Moreover, a recent report on Arabidopsis demonstrated that HO overexpression resulted in an enhanced salinity tolerance in this species. However, physiological mechanisms and downstream targets responsible for the observed salinity tolerance in these HO mutants remain elusive. To address this gap, ion transport characteristics (K(+) and H(+) fluxes and membrane potentials) and gene expression profiles in the roots of Arabidopsis thaliana HO-overexpressing (35S:HY1-1/2/3/4) and loss-of-function (hy-100, ho2, ho3, and ho4) mutants were compared during salinity stress. Upon acute salt stress, HO-overexpressing mutants retained more K(+) (less efflux), and exhibited better membrane potential regulation (maintained more negative potential) and higher H(+) efflux activity in root epidermis, compared with loss-of-function mutants. Pharmacological experiments suggested that high activity of the plasma membrane H(+)-ATPase in HO overexpressor mutants provided the proton-motive force required for membrane potential maintenance and, hence, better K(+) retention. The gene expression analysis after 12h and 24h of salt stress revealed high expression levels of H(+)-ATPases (AHA1/2/3) and Na(+)/H(+) antiporter [salt overly sensitive1 (SOS1)] transcripts in the plasma membrane of HO overexpressors. It is concluded that HO modifies salinity tolerance in Arabidopsis by controlling K(+) retention via regulation of the plasma membrane H(+)-ATPase and by altering SOS1 transcript levels in roots.
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