A Low Level of NaCl Stimulates Plant Growth by Improving Carbon and Sulfur Assimilation in Arabidopsis thaliana

Hongqiao, Li; Suyama, Akira; Mitani‐Ueno, Namiki; Hell, Rüdiger; Maruyama‐Nakashita, Akiko

doi:10.3390/plants10102138

Cited by 11 publications

(11 citation statements)

References 45 publications

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“…The low shoot Cl − concentration is maintained by restricting xylem-driven root to shoot transport (i) by higher Cl − efflux from the root to soil solution or (ii) by reducing the xylem loading as evident in CSR36 [ 50 ]. However, SO 4 2− and PO 4 3− are probably assimilated in plant metabolism [ 51 ] resulting enhanced plant growth and reduced internal concentration in roots and shoots as seen in the case of tolerant variety CSR36 under salt stress.…”

Section: Discussionmentioning

confidence: 99%

Antioxidant Defense and Ionic Homeostasis Govern Stage-Specific Response of Salinity Stress in Contrasting Rice Varieties

Kumar,

Srivastava,

Sharma

et al. 2024

Plants

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Salt stress is one of the most severe environmental stresses limiting the productivity of crops, including rice. However, there is a lack of information on how salt-stress sensitivity varies across different developmental stages in rice. In view of this, a comparative evaluation of contrasting rice varieties CSR36 (salt tolerant) and Jaya (salt sensitive) was conducted, wherein NaCl stress (50 mM) was independently given either at seedling (S-stage), tillering (T-stage), flowering (F-stage), seed-setting (SS-stage) or throughout plant growth, from seedling till maturity. Except for S-stage, CSR36 exhibited improved NaCl stress tolerance than Jaya, at all other tested stages. Principal component analysis (PCA) revealed that the improved NaCl stress tolerance in CSR36 coincided with enhanced activities/levels of enzymatic/non-enzymatic antioxidants (root ascorbate peroxidase for T- (2.74-fold) and S+T- (2.12-fold) stages and root catalase for F- (5.22-fold), S+T- (2.10-fold) and S+T+F- (2.61-fold) stages) and higher accumulation of osmolytes (shoot proline for F-stage (5.82-fold) and S+T+F- (2.31-fold) stage), indicating better antioxidant capacitance and osmotic adjustment, respectively. In contrast, higher shoot accumulation of Na+ (14.25-fold) and consequent increase in Na+/K+ (14.56-fold), Na+/Mg+2 (13.09-fold) and Na+/Ca+2 (8.38-fold) ratio in shoot, were identified as major variables associated with S-stage salinity in Jaya. Higher root Na+ and their associated ratio were major deriving force for other stage specific and combined stage salinity in Jaya. In addition, CSR36 exhibited higher levels of Fe3+, Mn2+ and Co3+ and lower Cl− and SO42−, suggesting its potential to discriminate essential and non-essential nutrients, which might contribute to NaCl stress tolerance. Taken together, the findings provided the framework for stage-specific salinity responses in rice, which will facilitate crop-improvement programs for specific ecological niches, including coastal regions.

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Section: Discussionmentioning

confidence: 99%

Antioxidant Defense and Ionic Homeostasis Govern Stage-Specific Response of Salinity Stress in Contrasting Rice Varieties

Kumar,

Srivastava,

Sharma

et al. 2024

Plants

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“…Reduced sulfate availability reduces ABA contents in plant tissues ( Cao et al , 2014 ) while ABA accumulates under abiotic stresses such as salt or drought. High concentrations of NaCl result in sulfate content reduction ( Hongqiao et al , 2021 ). The inclusion of LSU3 , FAD binding berberine , and (PLP)-dependent transferase in the OAS cluster co-expression network indicates a relationship between the pathways of sulfate, and ABA or salt.…”

Section: Additional Genes Potentially Playing a Role In The Oas Responsementioning

confidence: 99%

New insights into the regulation of plant metabolism by O-acetylserine: sulfate and beyond

Apodiakou

Hoefgen

2023

Journal of Experimental Botany

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Under conditions of sulfur deprivation OAS accumulates which is leading to the induction of a common set of six genes, called OAS cluster genes. These genes are induced not only under sulfur deprivation, but also under other conditions where OAS accumulates, such as shift to darkness and stress conditions leading to ROS or methyl-jasmonate accumulation. Using the OAS cluster genes as a query in ATTED-II, a co-expression network is derived spanning stably over several hundred conditions. This allowed not only to describe the downstream function of the OAS cluster genes but also to score for functions of the members of the co-regulated co-expression network and hence the effects of the OAS signal on the sulfate assimilation pathway and co-regulated pathways. Further, we summarized the existing knowledge on the regulation of the OAS cluster and the co-expressed genes. As it turned out, the known sulfate deprivation related transcription factor EIL3/SLIM1 exhibits a prominent role as most genes are subject to regulation by this TF. The bearing of other transcription factors in response to OAS awaits still further investigations.

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“…However, higher concentration always causes a toxic effect. In Arabidopsis, high concentrations of both sulfate ions and NaCl were demonstrated to cause a lower level of carbon and nitrogen in the plant 25 . In another work, even medium NaCl concentrations were found to change plant morphobiological traits 26 .…”

Section: Plant Germinationmentioning

confidence: 99%

Morpho-Biological Traits of Upland Cotton at the Germination Stage under Optimal and Salinity Soil Conditions

Normamatov¹,

Makamov²,

Boykobilov³

et al. 2023

Asian J. of Plant Sciences

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Background and Objective: Soil salinity is a major abiotic stress factor affecting cotton production worldwide. This study aimed to deal with the morpho-biological traits of cotton affected by chloride-sulfate salt during the germination stage. Materials and Methods: About 21 cotton genotypes were obtained from Uzbekistan germplasm. Plant materials were grown in a greenhouse under optimum and soil salinity (mainly strong sulfate salinity) conditions. Data on plant morpho-physiological traits including germination rate, plant length and plant fresh and dry weight were collected at the seedling stage. The greenhouse experiments lasted 30 days. Results: Namangan-77, considered to be susceptible to salinity, was highly damaged by salinity stress. Salt-resistant KK-1795, Hapicala 19, Zangi Ota and An-Boyovut-2 varieties showed better morpho-biological characteristics than other varieties. A PCR test with the salinity-associated BNL-3140 marker proved that these varieties are molecularly resistant to salinity. Conclusion: Results on the plantsʼ germination rate and biomass as well as salinity-associated primer testing resulting from highly sulfated saline soil serve to identify genes that respond to salinity.

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A Low Level of NaCl Stimulates Plant Growth by Improving Carbon and Sulfur Assimilation in Arabidopsis thaliana

Cited by 11 publications

References 45 publications

Antioxidant Defense and Ionic Homeostasis Govern Stage-Specific Response of Salinity Stress in Contrasting Rice Varieties

Antioxidant Defense and Ionic Homeostasis Govern Stage-Specific Response of Salinity Stress in Contrasting Rice Varieties

New insights into the regulation of plant metabolism by O-acetylserine: sulfate and beyond

Morpho-Biological Traits of Upland Cotton at the Germination Stage under Optimal and Salinity Soil Conditions

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