Exogenous salicylic acid signal reveals an osmotic regulatory role in priming the seed germination of Leymus chinensis under salt-alkali stress

Hongna, Chen; Tao, Lin; Junmei, Shi; Han, Xianpei; Cheng, Xiangdong

doi:10.1016/j.envexpbot.2021.104498

Cited by 45 publications

(33 citation statements)

References 75 publications

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“…[81][82][83] Seed priming with SA increased seed germination of Leymus chinensis under salt stress. [33] Similarly, here, we showed that SA priming significantly improved rapeseed salt tolerance by having high germination rate, biomass, and low MDA and ROS levels than the water primed control under salinity (Figure 5a-e). While the possible role of SA in PNC nanopriming improved salt tolerance is still obscure and is worthy to be investigated.…”

Section: Salicylic Acid Plays An Important Role In Pnc Nanopriming Im...supporting

confidence: 74%

“…[ 28 , 29 , 30 ] Other hormones such as BR (brassinosteroids), JA (jasmonic acid), and SA (salicylic acid) also play a role in seed germination. [ 31 , 32 , 33 ] Investigating the role of common phytohormones besides ABA and GA in nanoprimed seeds is of interest to better understand the complexity of mechanisms underlying seed nanopriming.…”

Section: Introductionmentioning

confidence: 99%

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CeO₂ Nanoparticles Seed Priming Increases Salicylic Acid Level and ROS Scavenging Ability to Improve Rapeseed Salt Tolerance

Khan

et al. 2022

Global Challenges

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Soil salinity is a major issue limiting efficient crop production. Seed priming with nanomaterials (nanopriming) is a cost‐effective technology to improve seed germination under salinity; however, the underlying mechanisms still need to be explored. Here, polyacrylic acid coated nanoceria (cerium oxide nanoparticles) (PNC, 9.2 nm, −38.7 mV) are synthesized and characterized. The results show that under salinity, PNC priming significantly increases rapeseed shoot length (41.5%), root length (93%), and seedling dry weight (78%) compared to the no‐nanoparticle (NNP) priming group. Confocal imaging results show that compared with NNP group, PNC priming significantly reduces reactive oxygen species (ROS) level in leaf (94.3% of H 2 O 2 , 56.4% of • O 2 − ) and root (38.4% of H 2 O 2 , 41.3% of • O 2 − ) of salt stressed rapeseed seedlings. Further, the results show that compared with the NNP group, PNC priming not only increases salicylic acid (SA) content in shoot (51.3%) and root (78.4%), but also upregulates the expression of SA biosynthesis related genes in salt stressed rapeseed. Overall, PNC nanopriming improved rapeseed salt tolerance is associated with both the increase of ROS scavenging ability and the increase of salicylic acid. The results add more information to understand the complexity of mechanisms behind nanoceria priming improved plant salt tolerance.

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Section: Salicylic Acid Plays An Important Role In Pnc Nanopriming Im...supporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

CeO₂ Nanoparticles Seed Priming Increases Salicylic Acid Level and ROS Scavenging Ability to Improve Rapeseed Salt Tolerance

Khan

et al. 2022

Global Challenges

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“…For example, incubation of Raphanus sativus seeds in a salicylic acid solution increases the optimal temperature range for germination [37]. The pre-treatment of maize seeds with salicylic acid induces antioxidant enzymes, resulting in an increase in its resistance to cold [38]. Salicylic acid improved the germination of Leynus chinensis under salt-alkali stress through an osmotic priming role [38].…”

Section: Discussionmentioning

confidence: 99%

Effects of Chemical Priming on the Germination of the Ornamental Halophyte Lobularia maritima under NaCl Salinity

Zammali

Dabbous

Youssef

et al. 2022

Seeds

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Lobularia maritima or sweet alyssum (Brassicaceae) is an annual littoral halophyte, naturally thriving on sandy beaches. In addition to its obvious interest as a naturally salt-tolerant plant, this species is mainly cultivated as an ornamental plant in many countries. Laboratory experiments were carried out to assess the effects of salinity on seed germination and on germination recovery from the effects of saline conditions after transfer to distilled water. Seed germination responses were determined at 0, 50, 100, 200 and 300 mM NaCl. Salt (NaCl) does not affect the germination of L. maritima if applied at a moderate dose of 50 mM. For higher concentrations of NaCl, there is a decrease in the germination rate at 100 and 200 mM NaCl or even a total inhibition of germination at 300 mM. Salt lowers or inhibits germination only through osmotic effects. To improve the germination of L. maritima under high salinity, seeds were pretreated with KNO3, thiourea, proline and salicylic acid. The germination of seeds is improved by KNO3 in the presence or absence of salt, while thiourea increases the final germination without affecting the germination rate. Salicylic acid amplifies the effect of salt, while proline delays germination without stopping it completely. These findings indicate that the application of KNO3 and thiourea may be used to improve seed germination of L. maritima, which is of great interest for cultivating this plant for landscaping purposes in saline soils.

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“…Pre-treatment of SA might induce a pre-adaptive response through a transient increase in H 2 O 2 level, which may act as a second messenger to “set up” the plant to defend the following salt stress that may occur. Pre-treatment with SA enhances the activities of antioxidant enzymes in plants, which in turn decreases stress-induced oxidative stress, as has been noted in Leymus chinensis [ 83 ] and Iris pseudacorus [ 87 ]. The signalling role of SA is also cross-linked with ABA, glycinebetaine, and ethylene (ET), as they are closely correlated with the synthesis of stress proteins and maintenance of leaf water potential [ 88 , 89 ].…”

Section: Functions Of Sa In Mitigating Abiotic Stressesmentioning

confidence: 92%

“…Exogenous foliar application of 1.5 mM SA reduced osmotic stress and improved the aerial K + /Na + ratio of saffron under saline conditions [ 82 ]. Soaking seeds of Leymus chinensis in SA solution lowered osmotic damage on the plasma membrane by accumulating K + and Ca 2+ [ 83 ]. SA-signalled K + accumulation might be due to the activation of H + -ATPase in the membrane [ 84 ], which occurs via guard cells outwardly rectifying K + channel (GORK), as noted in Arabidopsis thaliana under salt stress [ 85 ].…”

Section: Functions Of Sa In Mitigating Abiotic Stressesmentioning

confidence: 99%

Salicylic Acid, a Multifaceted Hormone, Combats Abiotic Stresses in Plants

Liu

Qiu

Liu

et al. 2022

Life

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In recent decades, many new and exciting findings have paved the way to the better understanding of plant responses in various environmental changes. Some major areas are focused on role of phytohormone during abiotic stresses. Salicylic acid (SA) is one such plant hormone that has been implicated in processes not limited to plant growth, development, and responses to environmental stress. This review summarizes the various roles and functions of SA in mitigating abiotic stresses to plants, including heating, chilling, salinity, metal toxicity, drought, ultraviolet radiation, etc. Consistent with its critical roles in plant abiotic tolerance, this review identifies the gaps in the literature with regard to the complex signalling network between SA and reactive oxygen species, ABA, Ca2+, and nitric oxide. Furthermore, the molecular mechanisms underlying signalling networks that control development and stress responses in plants and underscore prospects for future research on SA concerning abiotic-stressed plants are also discussed.

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Exogenous salicylic acid signal reveals an osmotic regulatory role in priming the seed germination of Leymus chinensis under salt-alkali stress

Cited by 45 publications

References 75 publications

CeO₂ Nanoparticles Seed Priming Increases Salicylic Acid Level and ROS Scavenging Ability to Improve Rapeseed Salt Tolerance

CeO₂ Nanoparticles Seed Priming Increases Salicylic Acid Level and ROS Scavenging Ability to Improve Rapeseed Salt Tolerance

Effects of Chemical Priming on the Germination of the Ornamental Halophyte Lobularia maritima under NaCl Salinity

Salicylic Acid, a Multifaceted Hormone, Combats Abiotic Stresses in Plants

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Exogenous salicylic acid signal reveals an osmotic regulatory role in priming the seed germination of Leymus chinensis under salt-alkali stress

Cited by 45 publications

References 75 publications

CeO2 Nanoparticles Seed Priming Increases Salicylic Acid Level and ROS Scavenging Ability to Improve Rapeseed Salt Tolerance

CeO2 Nanoparticles Seed Priming Increases Salicylic Acid Level and ROS Scavenging Ability to Improve Rapeseed Salt Tolerance

Effects of Chemical Priming on the Germination of the Ornamental Halophyte Lobularia maritima under NaCl Salinity

Salicylic Acid, a Multifaceted Hormone, Combats Abiotic Stresses in Plants

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Product

Resources

About

CeO₂ Nanoparticles Seed Priming Increases Salicylic Acid Level and ROS Scavenging Ability to Improve Rapeseed Salt Tolerance

CeO₂ Nanoparticles Seed Priming Increases Salicylic Acid Level and ROS Scavenging Ability to Improve Rapeseed Salt Tolerance