The Role of Salicylic Acid Signal in Plant Growth, Development and Abiotic Stress

Hu, Yulan; Zhi, Lulu; Li, Ping; Hancock, John T.; Hu, Xiangyang

doi:10.32604/phyton.2022.023733

Cited by 11 publications

(4 citation statements)

References 93 publications

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“…The NPR1 gene is widely considered to be the primary cellular target or receptor of SA [49], as evidenced by its consistent discovery in genetic screens as a crucial element for SA-induced gene expression and resistance [50,51]. However, in the presence of abiotic stress or pathogen invasion, plants undergo an accumulation of elevated SA levels [52]. This increased SA triggers the monomerization of the NPR1 protein and subsequently activates the expression of SAresponsive genes through direct interaction with the TGA2 (TGACG cis-element-binding protein 2 )…”

Section: Differential Expression Of Disease-resistance Response Genes...mentioning

confidence: 99%

GWSF-EuSWAP70 gene expression to enhance gray mold resistance in Arabidopsis thaliana

Huang,

Ma,

Cai

et al. 2024

Preprint

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Background Eucalyptus, a widely cultivated woody plant, is susceptible to a diverse array of pests and diseases, leading to reduced yields and economic losses. Traditional breeding methods are very time-consuming; therefore, plant genetic engineering has emerged as a promising approach for plant pathogen management. However, the genetic transformation system of eucalyptus is still in its early stages of development, while studies on transgenic eucalyptus and its disease-resistance genes are limited. The SWAP70 gene has been shown to play a crucial role in the defense response of Arabidopsis thaliana and rice. In this study, the model plant A. thalianawas selected for genetic transformation. The aim was to enhance the expression of the EuSWAP70 gene derived from Eucalyptus grandis, and other disease-resistance genes, by utilizing an artificial GWSF promoter. Results The results showed that the EuSWAP70 gene was successfully transformed into A. thaliana, and the PCR assay confirmed the presence of the EuSWAP70 gene in transgenic Arabidopsis plants. The gray mold resistance of the EuSWAP70 transgenic Arabidopsis plants under GWSF and CaMV35S promoters was evaluated against Botrytis cinerea infection. After gray mold infection, Arabidopsisplants were ranked by leaf pore area percentage: wild-type > CaMV35S-EuSWAP70 > GWSF-EuSWAP70. The transgenic plants showed stronger gray mold resistance, and the GWSF-EuSWAP70 transgenic plants were stronger than the CaMV35S-EuSWAP70 transgenic plants. In two transgenic Arabidopsis plants treated with different inducers, the expression levels of ten disease-resistant genes were compared, and there was a significant difference between them. The expression levels of disease-resistance genes, particularly NPR1 and ChiB, were found to be higher in GWSF-EuSWAP70 transgenic Arabidopsis plants than those in CaMV35S-EuSWAP70transgenic plants. GWSF-EuSWAP70 transgenic Arabidopsis plants have stronger disease-resistance gene activity than CaMV35S-EuSWAP70plants under various inducers. The GWSF-EuSWAP70transgenic plants have minimal background expression and a wide range of plant inducer responses. Different inducer treatments had different effects on gene expression levels, B. cinerea treatment resulted in a significant increase in the expression levels of NPR1 and ChiB genes, whereas ethylene and salicylic acid (SA) pre-treatment reduced the expression levels of ChiB genes under B. cinerea treatment. Conclusions The EuSWAP70 gene can be effectively introduced into Arabidopsis plants, induced by two promoters, and potentially improve their B. cinerearesistance.

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Section: Differential Expression Of Disease-resistance Response Genes...mentioning

confidence: 99%

GWSF-EuSWAP70 gene expression to enhance gray mold resistance in Arabidopsis thaliana

Huang,

Ma,

Cai

et al. 2024

Preprint

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“…ABA's participation in environmental signal integration, in conjunction with other phytohormones, has been established (Parwez et al, 2022). Salicylic acid (SA), a signaling compound governing plant growth and development, plays a pivotal role in fostering plant tolerance to abiotic stresses (Arif et al, 2020;Hu et al, 2022). Fluctuations in endogenous SA dynamics and distribution, along with exogenous application results, indicate the hormone's involvement in mitigating low-temperature effects via ABA-dependent or independent pathways, Ca 2+ signaling pathways, mitogenactivated protein kinase pathways, and reactive oxygen and nitrogen species pathways.…”

Section: Introductionmentioning

confidence: 99%

Impact of Chilling on Growth and Hormonal Homeostasis of Triticum Aestivum and Triticum Spelta During Initial Stage of Vegetation and After Recovery

V. VOYTENKO,

A. VASYUK,

M. SHCHERBATIUK

et al. 2024

AgricultForest

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The effect of short-term chilling (+4°C, 2 h) on hormonal homeostasis and growth parameters was investigated in 14-day-old stressed and 21-day-old recovered plants of Triticum aestivum cv 'Podolyanka' and T. spelta cv. 'Frankenkorn'. Short-term chilling didn't impact the linear indicators of wheat and spelt shoots and roots but stimulated shoot and root fresh and dry weight growth, while reducing root fresh weight. Spelt plants exhibited better post-stress recovery. Chilling led to a 396% increase in ABA content in wheat and a 74% increase in spelt. Stressed and recovered plants exceeded control plants in ABA content. Wheat exhibited three times higher constitutional SA content than spelt, while spelt exceeded wheat in gibberellins (GA 3 and GA 4 ) content. After chilling, SA content increased by 17.3% (wheat) and 18.7% (spelt), while gibberellins decreased by 32.4% (wheat) and 24.4% (spelt). Wheat dominated spelt in constitutional IAA content. Following chilling, IAA content decreased by 62% (wheat) and 72.2% (spelt). Our findings revealed both common characteristics and organ-and speciesspecific traits in phytohormones accumulation and balance in wheat and spelt plants during the rapid adaptation to chilling and subsequent recovery period. This will contribute to the understanding of how these related wheat species respond to chilling in the early stages of growth. Analyzing differences in constitutional and stress-induced endogenous phytohormone balances may be useful for developing screening methods for resilient genotypes and environmentally friendly technology of stress resistance induction.

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“…Protecting against stress and balancing plant growth is key to enabling the development of crop fields (HU et al, 2022). One of the strategies used to mitigate the effects of salt stress on plants is seed conditioning with salicylic acid (SA).…”

Section: Introductionmentioning

confidence: 99%

Conditioning white oat seeds in salicylic acid to mitigate salt stress

Puntel,

Stefanello,

Bevilaqua

et al. 2024

DS-CNT

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Excess salt in the soil has negatively affected the cultivation of forage crops, such as white oats. Consequently, it is crucial to seek alternatives capable of inducing salt stress tolerance in these plants. The present study focuses on investigating the effects of salicylic acid in mitigating salt stress on seed germination and initial growth of white oats. The experiment was conducted in a completely randomized design, with five concentrations of salicylic acid (0; 0.5; 1; 1.5 and 2 mM) and three levels of salinity (0, 50 and 100 mM), with four replicates. The seeds were sown on germitest paper and stored in a Biochemical Oxygen Demand chamber set at 20 °C and a 12-hour photoperiod. Tests were conducted for germination, first count, length, and dry mass of seedlings. Excess salt in the medium resulted in reduced germination and initial growth of white oat seedlings, while salicylic acid was not harmful to seed germination up to 2 mM. Conditioning white oat seeds with salicylic acid can be used to mitigate the negative effects induced by salt stress, depending on the intensity of the stress and the concentrations used.

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The Role of Salicylic Acid Signal in Plant Growth, Development and Abiotic Stress

Cited by 11 publications

References 93 publications

GWSF-EuSWAP70 gene expression to enhance gray mold resistance in Arabidopsis thaliana

GWSF-EuSWAP70 gene expression to enhance gray mold resistance in Arabidopsis thaliana

Impact of Chilling on Growth and Hormonal Homeostasis of Triticum Aestivum and Triticum Spelta During Initial Stage of Vegetation and After Recovery

Conditioning white oat seeds in salicylic acid to mitigate salt stress

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