Effect of CAX1a TILLING mutations on photosynthesis performance in salt-stressed Brassica rapa plants

Navarro‐León, Eloy; Paradisone, Valeria; López‐Moreno, Francisco Javier; Ríos, Juan J.; Esposito, Sergio; Blasco, Begoña

doi:10.1016/j.plantsci.2021.111013

Cited by 10 publications

(4 citation statements)

References 40 publications

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“…Whether the decreased photosynthesis rate was related to both stomatal function (opening and closing) depended on the duration of salt stress, salt concentration, and crop species ( Figure 1 ). The effect of stomatal and nonstomatal limitation mostly contributes to the changes of net photosynthetic rates in plants ( Shaki et al., 2020 ; Navarro-León et al., 2021 ). However, whether the stomatal and nonstomatal limitation could decrease the photosynthetic rate of seedlings required further investigation.…”

Section: Discussionmentioning

confidence: 99%

The transcriptional regulatory network of hormones and genes under salt stress in tomato plants (Solanum lycopersicum L.)

Wang

Wang²,

Yang³

et al. 2023

Front. Plant Sci.

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Salt stress has become one of the main limiting factors affecting the normal growth and development of tomatoes as well as fruit quality and yields. To further reveal the regulatory relationships between tomato hormones under salt stress, the interaction between hormones and TF and the genome-wide gene interaction network were analyzed and constructed. After salt treatment, the levels of ABA, SA, and JA were significantly increased, the levels of GA were decreased, and IAA and tZ showed a trend of first increasing and then decreasing. The expression patterns of hormone biosynthesis and signal transduction related genes were analyzed based on RNA-seq analysis, the co-expression network of hormones and genome-wide co-expression networks were constructed using weighted gene co-expression network analysis (WGCNA). The expression patterns of specific transcription factors under salt stress were also systematically analyzed and identified 20 hormone-related candidate genes associated with salt stress. In conclusion, we first revealed the relationship between hormones and genes in tomatoes under salt stress based on hormone and transcriptome expression profiles and constructed a gene regulatory network. A transcriptional regulation model of tomato consisted of six types of hormones was also proposed. Our study provided valuable insights into the molecular mechanisms regulating salt tolerance in tomatoes.

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Section: Discussionmentioning

confidence: 99%

The transcriptional regulatory network of hormones and genes under salt stress in tomato plants (Solanum lycopersicum L.)

Wang

Wang²,

Yang³

et al. 2023

Front. Plant Sci.

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“…For example, increasing the expression of soybean CAX (GmCAX1) can increase its salt tolerance [46]. Changes in CAX1 transporters can affect cellular Ca 2+ flux and mediate salt-stress-related responses [47]. In this study, CAX1 was also significantly up-regulated after spraying ZnO NPs (Figure 5A), and Ca 2+ was significantly increased after spraying ZnO NPs on cotton seedlings under salt stress (Figure 3G), suggesting that ZnO NPs were able to relieve ion stress by maintaining intracellular Na + /K + stabilization in the plants under salt stress and enhance the salt tolerance of the cotton seedlings (Figure 6).…”

Section: Discussionmentioning

confidence: 99%

Zinc Oxide Nanoparticles Alleviate Salt Stress in Cotton (Gossypium hirsutum L.) by Adjusting Na+/K+ Ratio and Antioxidative Ability

Qian,

Shan,

Shi

et al. 2024

Life

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Soil salinization poses a threat to the sustainability of agricultural production and has become a global issue. Cotton is an important cash crop and plays an important role in economic development. Salt stress has been harming the yield and quality of many crops, including cotton, for many years. In recent years, soil salinization has been increasing. It is crucial to study the mechanism of cotton salt tolerance and explore diversified materials and methods to alleviate the salt stress of cotton for the development of the cotton industry. Nanoparticles (NPs) are an effective means to alleviate salt stress. In this study, zinc oxide NPs (ZnO NPs) were sprayed on cotton leaves with the aim of investigating the intrinsic mechanism of NPs to alleviate salt stress in cotton. The results show that the foliar spraying of ZnO NPs significantly alleviated the negative effects of salt stress on hydroponic cotton seedlings, including the improvement of above-ground and root dry and fresh weight, leaf area, seedling height, and stem diameter. In addition, ZnO NPs can significantly improve the salt-induced oxidative stress by reducing the levels of MDA, H2O2, and O2− and increasing the activities of major antioxidant enzymes, such as superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT). Furthermore, RNA-seq showed that the foliar spraying of ZnO NPs could induce the expressions of CNGC, NHX2, AHA3, HAK17, and other genes, and reduce the expression of SKOR, combined with the CBL-CIPK pathway, which alleviated the toxic effect of excessive Na+ and reduced the loss of excessive K+ so that the Na+/K+ ratio was stabilized. In summary, our results indicate that the foliar application of ZnO NPs can alleviate high salt stress in cotton by adjusting the Na+/K+ ratio and regulating antioxidative ability. This provides a new strategy for alleviating the salt stress of cotton and other crops, which is conducive to the development of agriculture.

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“…Our inability to detect an effect of the salt treatment on greenness may be attributable to the relatively low concentration of NaCl (54.34 mM) used for the present study. Indeed, previous research on the effect of salt stress on related measurements such as chlorophyll content exposed plants to much higher concentrations of NaCl for a relatively brief period of time (Han et al, 2013 ; Kim et al, 2016 ; Navarro‐León et al, 2021 ). For example, Kim et al ( 2016 ) observed interveinal chlorosis and detected significantly lower chlorophyll content in wild‐type B. rapa after exposure to a 200 mM NaCl solution for one week early in development.…”

Section: Discussionmentioning

confidence: 99%

A low‐cost high‐throughput phenotyping system for automatically quantifying foliar area and greenness

2022

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Premise: With modern advances in genetic sequencing technology, plant phenotyping has become a substantial bottleneck in crop improvement programs. Traditionally, researchers have manually measured phenotypic traits to help determine genotype-phenotype relationships, but manual measurements can be time consuming and expensive. Recently, automated phenotyping systems have increased the spatial and temporal density of measurements, but most of these systems are extremely expensive and require specialized expertise. In the present paper, we develop and validate a low-cost, scalable, high-throughput phenotyping (HTP) system for automating the measurement of foliar area and greenness. Methods: During a greenhouse experiment on the effects of abiotic stress on Brassica rapa, we collected images of hundreds of plants every hour for over a month with a system that cost approximately US$1000. Results: In comparison with manually acquired images, this HTP system was able to produce similar estimates of foliar area and greenness, developmental trends, and treatment effects. Foliar area was correlated between the two image sets, but greenness was not. Discussion: These findings highlight the potential of HTP systems built from low-cost hardware and freely available software. Future work can use this system to investigate genotype-environment interactions and the genetic loci underlying morphological changes resulting from abiotic stress.

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Effect of CAX1a TILLING mutations on photosynthesis performance in salt-stressed Brassica rapa plants

Cited by 10 publications

References 40 publications

The transcriptional regulatory network of hormones and genes under salt stress in tomato plants (Solanum lycopersicum L.)

The transcriptional regulatory network of hormones and genes under salt stress in tomato plants (Solanum lycopersicum L.)

Zinc Oxide Nanoparticles Alleviate Salt Stress in Cotton (Gossypium hirsutum L.) by Adjusting Na+/K+ Ratio and Antioxidative Ability

A low‐cost high‐throughput phenotyping system for automatically quantifying foliar area and greenness

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