A novel UV-B priming system reveals an UVR8-depedent memory, which provides resistance against UV-B stress in Arabidopsis leaves

Xiong, Ying; Xing, Qian; Müller-Xing, Ralf

doi:10.1080/15592324.2021.1879533

Cited by 7 publications

(10 citation statements)

References 19 publications

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“…Although a statistically significant increase was observed in CHS gene expression due to UV‐B application, a lower value was obtained than the increase in the fold observed in Xiong et al . (34). Changes in the UV‐B wavelength affect the response in the plant.…”

Section: Resultsmentioning

confidence: 99%

Molecular Effects of Silicon on Arabidopsis thaliana Seedlings under UV‐B Stress

Celayir

Yeni

Yeşildirek

et al. 2023

Photochem & Photobiology

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Silicon‐plant interaction studies have shown that silicon reduces the harmful effects of stress in plants. Ultraviolet‐B (UV‐B) radiation, one of the abiotic stress affecting plants, poses a severe problem due to global warming. In this context, it is crucial to examine silicon's effects on UV‐B radiation stress at the molecular level. The experiments were carried out on 17 days old Arabidopsis seedlings that were treated with 800 μWatt cm−2 doses of UV‐B for 60 min and harvested on the 28th day. 1 mM orthosilicic acid was applied to the in vitro plant tissue culture for experimental groups. According to the results of the osmolyte accumulation analyses, silicon has been shown to play a role in the osmotic stress response. Gene expression levels of DGK2, CHS, FLC, RAD51, and UVR8 were measured via qPCR, and it has been shown that silicon interacts with these genes under UV‐B radiation stress. The result of genomic DNA methylation analysis demonstrated that silicon might affect DNA methylation levels by increasing the 5‐mC percentage compared with the control group. This study focused on the molecular effects of silicon application. It supports silicon–plant interaction research by demonstrating that silicon might affect UV‐B response at the molecular level.

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Section: Resultsmentioning

confidence: 99%

Molecular Effects of Silicon on Arabidopsis thaliana Seedlings under UV‐B Stress

Celayir

Yeni

Yeşildirek

et al. 2023

Photochem & Photobiology

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“…Total RNA preparation, cDNA synthesis, and real-time RT-qPCR including ABI3 21 , SPL2 22 , SPL10 23 , SPL11 22 , SPL15 22 , ERF109 11 , ABR1 11 , ASA1 11 , YUC2 9 , YUC6 , 23 and eIF4A primers 24 , 25 have been previously described. 24 , 26 Furthermore, we used primers 5ʹ-GACAAATTAAAGTGACGCAAGCC-3ʹ and 5ʹ- GTTCCCGAAAGTCCTCTTCTC-3ʹ for YUC4 in the gene expression analysis. In this study, all values represent the mean ± standard error.…”

Section: Methodsmentioning

confidence: 99%

The epigenetic regulator ULTRAPETALA1 suppresses de novo root regeneration from Arabidopsis leaf explants

Tian

Xing

Jing

et al. 2022

Plant Signaling & Behavior

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Plants have the potency to regenerate adventitious roots from aerial organs after detachment. In Arabidopsis thaliana, de novo root regeneration (DNRR) from leaf explants is triggered by wounding signaling that rapidly induces the expression of the ETHYLENE RESPONSE FACTOR (ERF) transcription factors ERF109 and ABR1 (ERF111). In turn, the ERFs promote the expression of ASA1, an essential enzyme of auxin biosynthesis, which contributes to rooting by providing high levels of auxin near the wounding side of the leaf. Here, we show that the loss of the epigenetic regulator ULTRAPETALA1 (ULT1), which interacts with Polycomb and Trithorax Group proteins, accelerates and reinforces adventitious root formation. Expression of ERF109 and ASA1 was increased in ult1 mutants, whereas ABR1 was not significantly changed. Cultivation of explants on media with exogenous auxin equates adventitious root formation in wild-type with ult1 mutants, suggesting that ULT1 negatively regulates DNRR by suppressing auxin biosynthesis. Based on these findings, we propose that ULT1 is involved in a novel mechanism that prevents overproliferation of adventitious roots during DNRR.

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“…Thus far, components involved in maintaining PSMs during acclimation to abiotic stresses other than HS have yet to be identified or confirmed genetically. The criteria for assessing PSM for heat acclimation are likely applicable to other types of abiotic stress with rapid, irregular fluctuations and preferably a long duration of the primed state, such as freezing ( Leuendorf et al, 2020 ) and UV-B stress ( Xiong et al, 2021 ). The criteria may have limitations for other types of abiotic stress, which usually involve a slow process in the natural environment, such as drought or salinity stress.…”

Section: Assessment Of Memory During Abiotic Stress Responsesmentioning

confidence: 99%

Maintenance of abiotic stress memory in plants: Lessons learned from heat acclimation

Charng

Mitra

2022

The Plant Cell

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Plants acquire enhanced tolerance to intermittent abiotic stress by employing information obtained during prior exposure to an environmental disturbance, a process known as acclimation or defense priming. The capacity for stress memory is a critical feature in this process. The number of reports related to plant stress memory (PSM) has recently increased, but few studies have focused on the mechanisms that maintain PSM. Identifying the components involved in maintaining PSM is difficult due in part to the lack of clear criteria to recognize these components. In this review, based on what has been learned from genetic studies on heat acclimation memory, we propose criteria for identifying components of the regulatory networks that maintain PSM. We provide examples of the regulatory circuits formed by effectors and regulators of PSM. We also highlight strategies for assessing PSMs, update the progress in understanding the mechanisms of PSM maintenance, and provide perspectives for the further development of this exciting research field.

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A novel UV-B priming system reveals an UVR8-depedent memory, which provides resistance against UV-B stress in Arabidopsis leaves

Cited by 7 publications

References 19 publications

Molecular Effects of Silicon on Arabidopsis thaliana Seedlings under UV‐B Stress

Molecular Effects of Silicon on Arabidopsis thaliana Seedlings under UV‐B Stress

The epigenetic regulator ULTRAPETALA1 suppresses de novo root regeneration from Arabidopsis leaf explants

Maintenance of abiotic stress memory in plants: Lessons learned from heat acclimation

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