Recurrent Drought Conditions Enhance the Induction of Drought Stress Memory Genes in Glycine max L.

Kim, Yeon-Ki; Chae, Songhwa; Oh, Nam-Iee; Nguyen, Nguyen Hoai; Cheong, Jong-Joo

doi:10.3389/fgene.2020.576086

Cited by 34 publications

(26 citation statements)

References 49 publications

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“…In addition, the down-regulation of a memory gene encoding a chloroplastic ATP synthase during the second stress suggests the role of a transcriptional component in altering energy-dependent quenching sensitivity, ultimately leading to the protection of the photosynthetic apparatus from drought [ 18 ]. Similar results were observed in Glycine max , for which some drought-repressed memory genes were also related to photosynthesis activity [ 35 ].…”

Section: Water Stress Memory: From the Plant Sidesupporting

confidence: 82%

Drought Stress Memory at the Plant Cycle Level: A Review

Jacques

Salon

Barnard

et al. 2021

Plants

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Plants are sessile organisms whose survival depends on their strategy to cope with dynamic, stressful conditions. It is urgent to improve the ability of crops to adapt to recurrent stresses in order to alleviate the negative impacts on their productivity. Although our knowledge of plant adaptation to drought has been extensively enhanced during the last decades, recent studies have tackled plant responses to recurrent stresses. The present review synthesizes the major findings from studies addressing plant responses to multiple drought events, and demonstrates the ability of plants to memorize drought stress. Stress memory is described as a priming effect allowing a different response to a reiterated stress when compared to a single stress event. Here, by specifically focusing on water stress memory at the plant cycle level, we describe the different underlying processes at the molecular, physiological and morphological levels in crops as well as in the model species Arabidopsis thaliana. Moreover, a conceptual analysis framework is proposed to study drought stress memory. Finally, the essential role of interactions between plants and soil microorganisms is emphasized during reiterated stresses because their plasticity can play a key role in supporting overall plant resilience.

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Section: Water Stress Memory: From the Plant Sidesupporting

confidence: 82%

Drought Stress Memory at the Plant Cycle Level: A Review

Jacques

Salon

Barnard

et al. 2021

Plants

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“…Numerous drought stress memory genes have been identified in Arabidopsis [ 140 ], maize [ 141 , 142 ], rice [ 143 ], potato [ 144 ], and soybean [ 145 ]. In Arabidopsis and soybean, drought-induced memory genes exhibiting elevated levels of transcripts include those involved in ABA-mediated tolerance responses to abiotic stresses, while the drought-repressed memory genes can be classified as light-harvesting- or photosynthesis-related genes [ 140 , 145 ]. When repeated dehydration stresses were imparted by air-drying, the Arabidopsis PP2C genes—including ABI1, ABI2, HAB2, HAI2, and AtPP2CA —did not exhibit expression patterns indicative of memory function [ 140 ].…”

Section: Epigenetic Regulation Of Aba Signalingmentioning

confidence: 99%

“…When repeated dehydration stresses were imparted by air-drying, the Arabidopsis PP2C genes—including ABI1, ABI2, HAB2, HAI2, and AtPP2CA —did not exhibit expression patterns indicative of memory function [ 140 ]. By contrast, approximately 10 PP2C genes were identified as drought-induced memory genes in soybean grown in water-deprived soil [ 145 ]. The potential of stress memory to enhance crop productivity under drought conditions has been explored for a number of crops, including potato [ 146 ], wheat [ 147 , 148 ], and olive [ 149 ].…”

Section: Epigenetic Regulation Of Aba Signalingmentioning

confidence: 99%

“…In the memory responses, a subset of genes termed 'memory genes' are expressed at highly elevated or reduced levels during subsequent stress conditions. Numerous drought stress memory genes have been identified in Arabidopsis [140], maize [141,142], rice [143], potato [144], and soybean [145]. In Arabidopsis and soybean, drought-induced memory genes exhibiting elevated levels of transcripts include those involved in ABA-mediated tolerance responses to abiotic stresses, while the drought-repressed memory genes can be classified as light-harvesting-or photosynthesis-related genes [140,145].…”

Section: Osmotic Stress Memorymentioning

confidence: 99%

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Transcriptional Regulation of Protein Phosphatase 2C Genes to Modulate Abscisic Acid Signaling

Jung

Nguyen

Cheong

2020

IJMS

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The plant hormone abscisic acid (ABA) triggers cellular tolerance responses to osmotic stress caused by drought and salinity. ABA controls the turgor pressure of guard cells in the plant epidermis, leading to stomatal closure to minimize water loss. However, stomatal apertures open to uptake CO2 for photosynthesis even under stress conditions. ABA modulates its signaling pathway via negative feedback regulation to maintain plant homeostasis. In the nuclei of guard cells, the clade A type 2C protein phosphatases (PP2Cs) counteract SnRK2 kinases by physical interaction, and thereby inhibit activation of the transcription factors that mediate ABA-responsive gene expression. Under osmotic stress conditions, PP2Cs bind to soluble ABA receptors to capture ABA and release active SnRK2s. Thus, PP2Cs function as a switch at the center of the ABA signaling network. ABA induces the expression of genes encoding repressors or activators of PP2C gene transcription. These regulators mediate the conversion of PP2C chromatins from a repressive to an active state for gene transcription. The stress-induced chromatin remodeling states of ABA-responsive genes could be memorized and transmitted to plant progeny; i.e., transgenerational epigenetic inheritance. This review focuses on the mechanism by which PP2C gene transcription modulates ABA signaling.

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“…The regulatory network involved in plants' response to drought conditions is complex and incorporates a wide range of transcription factors, molecular networks, comprising stress sensing, signaling, and regulation of gene expression. Many drought-responsive genes are down and up-regulated under drought conditions (Kim et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Identification of drought-responsive hub genes and their related miRNAs in Arabidopsis thaliana

Arjmand¹,

Lahiji²,

Biglouei³

et al. 2021

Preprint

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Drought is important environmental stress that reduces the yield and quality of crops all around the world. The drought-responsive regulatory network is very complex in plants. MicroRNAs are an important gene expression regulator under drought conditions. Identifying drought-responsive genes and their related miRNAs helps us to provide valuable information on plant stress regulation by miRNAs in stress conditions. In this study, a microarray dataset of drought stress and well-water samples of Arabidopsis were analyzed to identify the common root and shoot genes in drought. GEO2R tool was used for identifying differentially expressed genes. Gene ontology enrichment, protein-protein interaction, pathway analysis, and potential miRNAs for hub genes were performed using bioinformatics tools. There were 486 and 288 DEGs of root and shoot tissue respectively. Venn diagram analysis demonstrated that 59 DEGs were common in both root and shoot tissues, including 51 upregulated genes and 8 downregulated genes enriched in response to water deprivation, response to osmotic stress, response to abscisic acid, response to oxidative stress, response to salt stress and other related pathways. Gene ontology and protein network analysis showed that TSPO, LTI78, AFP1, RAB18, LTI65, HAI1, HAI2, LEA4-5, LEA7, and F16B3.11 genes are hub genes in drought conditions. All hub genes except LEA7 and F16B3.11 were target genes of miRNAs. It seems that these genes and their related miRNAs can play a crucial role in drought response adaptation and they can be considered in breeding programs and genetic engineering for the production of drought-tolerant plants.

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Recurrent Drought Conditions Enhance the Induction of Drought Stress Memory Genes in Glycine max L.

Cited by 34 publications

References 49 publications

Drought Stress Memory at the Plant Cycle Level: A Review

Drought Stress Memory at the Plant Cycle Level: A Review

Transcriptional Regulation of Protein Phosphatase 2C Genes to Modulate Abscisic Acid Signaling

Identification of drought-responsive hub genes and their related miRNAs in Arabidopsis thaliana

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