RAP2.6 enhanced salt stress tolerance by reducing Na+ accumulation and stabilizing the electron transport in Arabidopsis thaliana

Song, Qiping; Min, Zhou; Wang, Xipan; Brestič, Marián; Liu, Yang; Yang, Xinghong

doi:10.1016/j.plaphy.2023.01.003

Cited by 7 publications

(4 citation statements)

References 68 publications

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“…HKT1 is an important carrier of Na + in cells. Under salt stress, the affinity of HKT1 to Na + is much higher than that of K + , thus inhibiting the transport of Na + to the above-ground part and protecting plants from ionic toxicity [ 59 , 60 ]. SOS1 is a key gene in the SOS regulatory pathway and plays an important role in the regulation and transport of Na + [ 61 , 62 ].…”

Section: Discussionmentioning

confidence: 99%

GmHXK2 promotes the salt tolerance of soybean seedlings by mediating AsA synthesis, and auxin synthesis and distribution

Guo,

Liu,

Chen

et al. 2024

BMC Plant Biol

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Background Salt is an important factor that affects crop productivity. Plant hexokinases (HXKs) are key enzymes in the glycolytic pathway and sugar signaling transduction pathways of plants. In previous studies, we identified and confirmed the roles of GmHXK2 in salt tolerance. Results In this study, we analyzed the tissue-specific expression of GmHXK2 at different growth stages throughout the plant’s life cycle. The results showed that GmHXK2 was expressed significantly in all tissues at vegetative stages, including germination and seedling. However, no expression was detected in the pods, and there was little expression in flowers during the later mature period. Arabidopsis plants overexpressing the GmHXK2 (OE) had more lateral roots. The OE seedlings also produced higher levels of auxin and ascorbic acid (AsA). Additionally, the expression levels of genes PMM, YUC4/YUC6/YUC8, and PIN/LAX1,LAX3, which are involved respectively in the synthesis of AsA and auxin, as well as polar auxin transport, were upregulated in OE plants. This upregulation occurred specifically under exogenous glucose treatment. AtHKT1, AtSOS1, and AtNHX1 were up-regulated in OE plants under salt stress, suggesting that GmHXK2 may modulate salt tolerance by maintaining ion balance within the cells and alleviating damage caused by salt stress. Additionally, we further confirmed the interaction between GmHXK2 and the protein GmPMM through yeast two-hybridization and bimolecular fluorescence complementation assays, respectively. Conclusion The expression of GmHXK2 gene in plants is organ-specific and developmental stage specific. GmHXK2 not only regulates the synthesis of AsA and the synthesis and distribution of auxin, but also promotes root elongation and induces lateral root formation, potentially enhancing soil water absorption. This study reveals the crosstalk between sugar signaling and hormone signaling in plants, where GmHXK2 acts as a glucose sensor through its interaction with GmPMM, and sheds light on the molecular mechanism by which GmHXK2 gene is involved in salt tolerance in plants.

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Section: Discussionmentioning

confidence: 99%

GmHXK2 promotes the salt tolerance of soybean seedlings by mediating AsA synthesis, and auxin synthesis and distribution

Guo,

Liu,

Chen

et al. 2024

BMC Plant Biol

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“…Foliar application of H 2 O 2 up to a concentration of 25 µM promoted an increase in the total production per plant of cherry tomatoes (Figure 4D). The beneficial effects of H 2 O 2 on TPP may be related to the activity of enzymes involved in glycolysis and energy metabolism, which increase the production of ATP necessary for plant growth and development [9]. Hydrogen peroxide, when applied at appropriate concentrations, contributes to the accumulation of inorganic and organic solutes [42,43].…”

Section: Discussionmentioning

confidence: 99%

“…The harmful effects caused by salt stress are related to the reduction in the availability of water and nutrients to plants and to the toxic effect of Na + and Cl − [8,9]. Excess salts present in the water also induce osmotic stress, ionic toxicity, and secondary stress as oxidative stress, directly leading to reductions in fruit production and post-harvest quality [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Hydroponic Cultivation of Laranja Cherry Tomatoes under Salt Stress and Foliar Application of Hydrogen Peroxide

Guedes,

Silva,

Lima

et al. 2023

Agriculture

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The objective of this study was to evaluate the effect of the foliar application of hydrogen peroxide (H2O2) in mitigating the effects of salt stress on cherry tomato cultivation in a hydroponic system. The experiment was conducted in a greenhouse, using a Nutrient Film Technique hydroponic system. The experimental design used was completely randomized in a split-plot scheme, with four levels of electrical conductivity of the nutrient solution—ECns (2.1, 2.8, 3.5, and 4.2 dS m−1), considered as plots, and five H2O2 concentrations (0, 12, 24, 36, and 48 µM), regarded as subplots, with four replicates and two plants per plot. An increase in the electrical conductivity of the nutrient solution negatively affected the production components of cherry tomatoes. However, it did not affect the post-harvest quality of the fruits. Despite the reductions observed in the production components due to the increase in the electrical conductivity of the nutrient solution, foliar application of H2O2 at concentrations esteemed between 22 and 25 µM attenuated the deleterious effects of salt stress on the number of fruits and ascorbic acid content and increased the total fruit production per plant of cherry tomatoes.

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“…Among them, ERF105 plays an important role in Arabidopsis freezing tolerance and cold acclimation [15]. RAP2.6 plays a key role in responding to ABA, JA, wounding, cold, drought, and salinity stresses [16]. SHINE and its rice homolog OsWR1 enhance the tolerance of plants to drought by influencing wax synthesis [17,18].…”

Section: Introductionmentioning

confidence: 99%

Ancient Duplication and Lineage-Specific Transposition Determine Evolutionary Trajectory of ERF Subfamily across Angiosperms

Zhu,

Hutang,

Gao

2024

IJMS

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AP2/ERF transcription factor family plays an important role in plant development and stress responses. Previous studies have shed light on the evolutionary trajectory of the AP2 and DREB subfamilies. However, knowledge about the evolutionary history of the ERF subfamily in angiosperms still remains limited. In this study, we performed a comprehensive analysis of the ERF subfamily from 107 representative angiosperm species by combining phylogenomic and synteny network approaches. We observed that the expansion of the ERF subfamily was driven not only by whole-genome duplication (WGD) but also by tandem duplication (TD) and transposition duplication events. We also found multiple transposition events in Poaceae, Brassicaceae, Poales, Brassicales, and Commelinids. These events may have had notable impacts on copy number variation and subsequent functional divergence of the ERF subfamily. Moreover, we observed a number of ancient tandem duplications occurred in the ERF subfamily across angiosperms, e.g., in Subgroup IX, IXb originated from ancient tandem duplication events within IXa. These findings together provide novel insights into the evolution of this important transcription factor family.

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RAP2.6 enhanced salt stress tolerance by reducing Na+ accumulation and stabilizing the electron transport in Arabidopsis thaliana

Cited by 7 publications

References 68 publications

GmHXK2 promotes the salt tolerance of soybean seedlings by mediating AsA synthesis, and auxin synthesis and distribution

GmHXK2 promotes the salt tolerance of soybean seedlings by mediating AsA synthesis, and auxin synthesis and distribution

Hydroponic Cultivation of Laranja Cherry Tomatoes under Salt Stress and Foliar Application of Hydrogen Peroxide

Ancient Duplication and Lineage-Specific Transposition Determine Evolutionary Trajectory of ERF Subfamily across Angiosperms

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