Salt tolerance in indica rice cell cultures depends on a fine tuning of ROS signalling and homeostasis

Ijaz, Bushra; Formentin, Elide; Ronci, Beatrice; Locato, Vittoria; Barizza, Elisabetta; Hyder, Muhammad Zeeshan; Schiavo, Fiorella Lo; Yasmin, Tayyaba

doi:10.1371/journal.pone.0213986

Cited by 34 publications

(23 citation statements)

References 77 publications

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“…Also, excessive Na + depolarizes the plasma membrane, thereby increasing Ca 2+ influx and activating signaling responses, consequently minimizing Na + uptake, increasing Na + sequestration, and extrusion as well as restoring K + levels (Reddy, Kim, Kim, et al, 2017; Wang, Li, Wei, et al, 2012). ROS‐induced Ca 2+ influx in response to salt stress has also been reported by Ijaz et al (2019). Genes involved in potassium homeostasis are reported to play a dynamic role in salinity tolerance in rice (Ijaz et al, 2017).…”

Section: Role Of No and H2s Under Salt Stresssupporting

confidence: 69%

Emerging warriors against salinity in plants: Nitric oxide and hydrogen sulphide

Goyal

Jhanghel

Mehrotra

2021

Physiologia Plantarum

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The agriculture sector is vulnerable to various environmental stresses, which significantly affect plant growth, performance, and development. Abiotic stresses, such as salinity and drought, cause severe losses in crop productivity worldwide. Soil salinity is a major stress suppressing plant development through osmotic stress accompanied by ion toxicity, nutritional imbalance, and oxidative stress. Various defense mechanisms like osmolytes accumulations, activation of stress‐induced genes, and transcription factors, production of plant growth hormones, accumulation of antioxidants, and redox defense system in plants are responsible for combating salt stress. Nitric oxide (NO) and hydrogen sulphide (H2S) have emerged as novel bioactive gaseous signaling molecules that positively impact seed germination, homeostasis, plant metabolism, growth, and development, and are involved in several plant acclimation responses to impart stress tolerance in plants. NO and H2S trigger cell signaling by activating a cascade of biochemical events that result in plant tolerance to environmental stresses. NO‐ and H2S‐mediated signaling networks, interactions, and crosstalks facilitate stress tolerance in plants. Research on the roles and mechanisms of NO and H2S as challengers of salinity is entering an exponential exploration era. The present review focuses on the current knowledge of the mechanisms of stress tolerance in plants and the role of NO and H2S in adaptive plant responses to salt stress and provides an overview of the signaling mechanisms and interplay of NO and H2S in the regulation of growth and development as well as modulation of defense responses in plants and their long term priming effects for imparting salinity tolerance in plants.

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Section: Role Of No and H2s Under Salt Stresssupporting

confidence: 69%

Emerging warriors against salinity in plants: Nitric oxide and hydrogen sulphide

Goyal

Jhanghel

Mehrotra

2021

Physiologia Plantarum

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“…This is metabolized by ROS scavenger like cytochrome P450 to prevent cellular damages, ultimately leading to redox homeostasis. Studies suggest that production of ROS varies during abiotic stress response between sensitive and tolerant varieties of rice [66][67][68]. Zhang et al have shown that rice can better adapt to the chilling stress condition when ROS-mediated signaling genes were upregulated.…”

Section: Discussionmentioning

confidence: 99%

Understanding the early cold response mechanism in IR64 indica rice variety through comparative transcriptome analysis

et al. 2020

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Background: Cellular reprogramming in response to environmental stress involves alteration of gene expression, changes in the protein and metabolite profile for ensuring better stress management in plants. Similar to other plant species originating in tropical and subtropical areas, indica rice is highly sensitive to low temperature that adversely affects its growth and grain productivity. Substantial work has been done to understand cold induced changes in gene expression in rice plants. However, adequate information is not available for early gene expression, especially in indica variety. Therefore, a transcriptome profile was generated for cold shock treated seedlings of IR64 variety to identify early responsive genes. Results: The functional annotation of early DEGs shows enrichment of genes involved in altered membrane rigidity and electrolytic leakage, the onset of calcium signaling, ROS generation and activation of stress responsive transcription factors in IR64. Gene regulatory network suggests that cold shock induced Ca2+ signaling activates DREB/CBF pathway and other groups of transcription factors such as MYB, NAC and ZFP; for activating various coldresponsive genes. The analysis also indicates that cold induced signaling proteins like RLKs, RLCKs, CDPKs and MAPKK and ROS signaling proteins. Further, several late-embryogenesis-abundant (LEA), dehydrins and low temperature-induced-genes were upregulated under early cold shock condition, indicating the onset of waterdeficit conditions. Expression profiling in different high yielding cultivars shows high expression of cold-responsive genes in Heera and CB1 indica varieties. These varieties show low levels of cold induced ROS production, electrolytic leakage and high germination rate post-cold stress, compared to IR36 and IR64. Collectively, these results suggest that these varieties may have improved adaptability to cold stress.

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“…Plasma membrane RBOHs play a key role in signal transduction reactions that mediate plant acclimation to abiotic stresses, since they are the primary sites of ROS production at the apoplast during abiotic stress condition [19]. We recently demonstrated a pivotal role for innate ROS scavenging systems and NOXs in fine tuning the intracellular H 2 O 2 signalling and inducing salt-tolerance, both at the plant and single cell level [32,47,115]. Similarly, Saini and co-workers [35] observed a higher expression level of OsNOX3 in the roots of a salt-tolerant cultivar than in those of a salt-sensitive genotype.…”

Section: Resultsmentioning

confidence: 99%

A Meta-Analysis of Comparative Transcriptomic Data Reveals a Set of Key Genes Involved in the Tolerance to Abiotic Stresses in Rice

Buti

Baldoni

Formentin

et al. 2019

IJMS

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Several environmental factors, such as drought, salinity, and extreme temperatures, negatively affect plant growth and development, which leads to yield losses. The tolerance or sensitivity to abiotic stressors are the expression of a complex machinery involving molecular, biochemical, and physiological mechanisms. Here, a meta-analysis on previously published RNA-Seq data was performed to identify the genes conferring tolerance to chilling, osmotic, and salt stresses, by comparing the transcriptomic changes between tolerant and susceptible rice genotypes. Several genes encoding transcription factors (TFs) were identified, suggesting that abiotic stress tolerance involves upstream regulatory pathways. A gene co-expression network defined the metabolic and signalling pathways with a prominent role in the differentiation between tolerance and susceptibility: (i) the regulation of endogenous abscisic acid (ABA) levels, through the modulation of genes that are related to its biosynthesis/catabolism, (ii) the signalling pathways mediated by ABA and jasmonic acid, (iii) the activity of the “Drought and Salt Tolerance” TF, involved in the negative regulation of stomatal closure, and (iv) the regulation of flavonoid biosynthesis by specific MYB TFs. The identified genes represent putative key players for conferring tolerance to a broad range of abiotic stresses in rice; a fine-tuning of their expression seems to be crucial for rice plants to cope with environmental cues.

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Salt tolerance in indica rice cell cultures depends on a fine tuning of ROS signalling and homeostasis

Cited by 34 publications

References 77 publications

Emerging warriors against salinity in plants: Nitric oxide and hydrogen sulphide

Emerging warriors against salinity in plants: Nitric oxide and hydrogen sulphide

Understanding the early cold response mechanism in IR64 indica rice variety through comparative transcriptome analysis

A Meta-Analysis of Comparative Transcriptomic Data Reveals a Set of Key Genes Involved in the Tolerance to Abiotic Stresses in Rice

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