Transcription factor <scp>ABI</scp>3 auto‐activates its own expression during dehydration stress response

Bedi, Sonia; Chaudhuri, Ronita Nag

doi:10.1002/1873-3468.13194

Cited by 22 publications

(19 citation statements)

References 84 publications

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“…Additionally, H3K4 trimethylation is found to be responsive to other external stress factors in different cell types and organisms (W. Ding et al, ; Ding, Fromm, & Avramova, ; Hunter, McCarthy, Milne, Pfaff, & McEwen, ; Ma et al, ; Saunderson et al, ; Sharma, Kohli, & Brahmachari, ; Widiez et al, ; Xu, Wang et al, ; Zhang, Schroeder, Fong, & Bentley, ). Of particular relevance is desiccation stress in fruit flies and plants, in which H3K4me3 was indicated as a memory marker for stress‐induced genes in response to droughts (Bedi & Nag Chaudhuri, ; Y. Ding et al, ; Liu, Fromm, & Avramova, ; Sharma et al, ). However, this may not be the case for the dried cat oocytes because we observed decreased instead of increased accumulation of H3K4me3 after dehydration.…”

Section: Discussionmentioning

confidence: 99%

Desiccation and supra‐zero temperature storage of cat germinal vesicles lead to less structural damage and similar epigenetic alterations compared to cryopreservation

Lee

Comizzoli

2019

Molecular Reproduction Devel

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Understanding cellular and molecular damages in oocytes during exposure to extreme conditions is essential to optimize long‐term fertility preservation approaches. Using the domestic cat (Felis catus) model, we are developing drying techniques for oocytes’ germinal vesicles (GVs) as a more economical alternative to cryopreservation. The objective of the study was to characterize the influence of desiccation on nuclear envelope conformation, chromatin configuration, and the relative fluorescent intensities of histone H3 trimethylation at lysine 4 (H3K4me3) and at lysine 9 (H3K9me3) compared to vitrification. Results showed that higher proportions of dried/rehydrated GVs maintained normal nuclear envelope conformation and chromatin configuration than vitrified/warmed counterparts. Both preservation methods had a similar influence on epigenetic patterns, lowering H3K4me3 intensity to under 40% while maintaining H3K9me3 levels. Further analysis revealed that the decrease of H3K4me3 intensity mainly occurred during microwave dehydration and subsequent rehydration, whereas sample processing (permeabilization and trehalose exposure) or storage did not significantly affect the epigenetic marker. Moreover, rehydration either directly or stepwise with trehalose solutions did not influence the outcome. This is the first report demonstrating that the incidence of GV damages is lower after desiccation/rehydration than vitrification/warming.

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Section: Discussionmentioning

confidence: 99%

Desiccation and supra‐zero temperature storage of cat germinal vesicles lead to less structural damage and similar epigenetic alterations compared to cryopreservation

Lee

Comizzoli

2019

Molecular Reproduction Devel

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“…20,21 Furthermore, ABI3 auto-activates its own expression during dehydration stress response primarily through the Sph/RYcis element present in its promoter region. 22 In this work we show that in absence of ABI3, indirect de-novo root regeneration is compromised in Arabidopsis thaliana callus cells, indicating the role of ABI3 in root regeneration.…”

Section: Introductionmentioning

confidence: 54%

ABI3 plays a role in de-novo root regeneration from Arabidopsis thaliana callus cells

Sengupta

Chaudhuri

2020

Plant Signaling & Behavior

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Developmental plasticity and the ability to regenerate organs during the life cycle are a signature feature of plant system. De novo organogenesis is a common mode of plant regeneration and may occur directly from the explant or indirectly via callus formation. It is now evident that callus formation occurs through the root development pathway. In fact, callus cells behave like a group of root primordium cells that are under the control of exogenous auxin. Presence or absence of auxin decides the subsequent fate of these cells. While in presence of external supplementation of auxin they are maintained as root primordia cells, absence of exogenous auxin induces the callus cells into patterning, differentiation and finally root emergence. Here we show that in absence of functional ABI3, a prominent member of the B3 superfamily of transcription factors, root regeneration is compromised in Arabidopsis callus cells. In culture medium free of any exogenous hormone supplementation, while adventitious root emergence and growth was prominently observed in wild type cells, no such features were observed in abi3-6 cells. Expression of auxin-responsive AUX1 and GH3 genes was significantly reduced in abi3-6 cells, indicating that auxin levels or distribution may be altered in absence of ABI3.

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“…ABI3 encodes a AP2/ERF-type TF important for normal embryogenesis and seed development (Rohde et al, 2000; Roscoe et al, 2015), as well as for plants under dehydration stress (Bedi et al, 2016). ABI3 might have a positive regulatory function in Arabidopsis plants under drought as its transcription is up-regulated following dehydration, and its transcript levels are maintained during the subsequent stress recovery phases (Bedi et al, 2016; Bedi and Chaudhuri, 2018). On the other hand, the drought-induced ABF3 encodes a member of the ABF / AREB subfamily of bZIP-type TFs (Fujita et al, 2013; Yoshida et al, 2015; Zandkarimi et al, 2015; Wang et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

The histidine phosphotransfer AHP4 plays a negative role inArabidopsisplant response to drought

Nguyen

Mostofa

et al. 2020

Preprint

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Cytokinins play an important role in plant stress responses via a multistep signaling pathway, involving the histidine phosphotransfer proteins (HPs). Here, the AHP4 possesses a negative regulatory role in drought response in Arabidopsis thaliana as evidenced by higher survival rates of ahp4 than wild-type (WT) plants under drought, and the down-regulated AHP4 expression in WT during dehydration. Transcriptome analysis of ahp4 and WT plants revealed AHP4-mediated expression of dehydration- and/or abscisic acid (ABA)-responsive genes important for plant drought acclimation. ahp4 plants showed increased wax crystal accumulation in stems, thicker cuticles in leaves, greater sensitivity to exogenous ABA, narrower stomatal apertures, higher leaf temperatures during dehydration, and longer root length under osmotic stress. Additionally, ahp4 plants showed greater photosynthetic efficiency, lower levels of reactive oxygen species, reduced electrolyte leakage and lipid peroxidation, and increased anthocyanin contents under drought. Findings could make editing of AHP4 a promising approach for generating drought-tolerant crops.

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Transcription factor ABI3 auto‐activates its own expression during dehydration stress response

Cited by 22 publications

References 84 publications

Desiccation and supra‐zero temperature storage of cat germinal vesicles lead to less structural damage and similar epigenetic alterations compared to cryopreservation

Desiccation and supra‐zero temperature storage of cat germinal vesicles lead to less structural damage and similar epigenetic alterations compared to cryopreservation

ABI3 plays a role in de-novo root regeneration from Arabidopsis thaliana callus cells

The histidine phosphotransfer AHP4 plays a negative role inArabidopsisplant response to drought

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