ArticleRice (New York, N.Y.)2014
Genome duplication improves rice root resistance to salt stress.
Article in Rice (New York, N.Y.), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.
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43 citing papers in PubMed, 125 citations in OpenAlex.
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- Autotetraploidy of rice does not potentiate the tolerance to drought stress in the seedling stage.Rice (New York, N.Y.) · 2024Article
- Octoploids Show Enhanced Salt Tolerance through Chromosome Doubling in Switchgrass (Plants (Basel, Switzerland) · 2024Article
- Chasing the mechanisms of ecologically adaptive salinity tolerance.Plant communications · 2023Review
- Review
- Root and Leaf Anatomy, Ion Accumulation, and Transcriptome Pattern under Salt Stress Conditions in Contrasting Genotypes ofPlants (Basel, Switzerland) · 2023Article
- Comparative physiological and biochemical mechanisms in diploid, triploid, and tetraploid watermelon (Citrullus lanatus L.) grafted by branches.Scientific reports · 2023Article
- Cytogeography of NaturalizedPlants (Basel, Switzerland) · 2023Article
- Enhanced NaPlanta · 2023Article
- Salt-Induced Changes in Cytosolic pH and Photosynthesis in Tobacco and Potato Leaves.International journal of molecular sciences · 2022Article
- Comparative Analysis of Physiological, Hormonal and Transcriptomic Responses Reveal Mechanisms of Saline-Alkali Tolerance in Autotetraploid Rice (International journal of molecular sciences · 2022Article
- An uncharacterized protein NY1 targets EAT1 to regulate anther tapetum development in polyploid rice.BMC plant biology · 2022Article
- Cytogenetics and Consequences of Polyploidization on Different Biotic-Abiotic Stress Tolerance and the Potential Mechanisms Involved.Plants (Basel, Switzerland) · 2022Review
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Authors and funding
12 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSalinity is a stressful environmental factor that limits the productivity of crop plants, and roots form the major interface between plants and various abiotic stresses. Rice is a salt-sensitive crop and its polyploid shows advantages in terms of stress resistance. The objective of this study was to investigate the effects of genome duplication on rice root resistance to salt stress.
resultsBoth diploid rice (HN2026-2x and Nipponbare-2x) and their corresponding tetraploid rice (HN2026-4x and Nipponbare-4x) were cultured in half-strength Murashige and Skoog medium with 150 mM NaCl for 3 and 5 days. Accumulations of proline, soluble sugar, malondialdehyde (MDA), Na(+) content, H(+) (proton) flux at root tips, and the microstructure and ultrastructure in rice roots were examined. We found that tetraploid rice showed less root growth inhibition, accumulated higher proline content and lower MDA content, and exhibited a higher frequency of normal epidermal cells than diploid rice. In addition, a protective gap appeared between the cortex and pericycle cells in tetraploid rice. Next, ultrastructural analysis showed that genome duplication improved membrane, organelle, and nuclei stability. Furthermore, Na(+) in tetraploid rice roots significantly decreased while root tip H(+) efflux in tetraploid rice significantly increased.
conclusionsOur results suggest that genome duplication improves root resistance to salt stress, and that enhanced proton transport to the root surface may play a role in reducing Na(+) entrance into the roots.
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