Deciphering the Epigenetic Alphabet Involved in Transgenerational Stress Memory in Crops

Mladenov, Velimir; Fotopoulos, Vasileios; Kaiserli, Eirini; Karalija, Erna; Maury, Stéphane; Baránek, Miroslav; Segal, Na’ama; Testillano, Pilar S.; Vassileva, Valya; Pinto, Glória; Nagel, Manuela; Hoenicka, Hans; Miladinović, Dragana; Gallusci, Philippe; Vergata, Chiara; Kapazoglou, Aliki; Abraham, Εleni M.; Tani, Eleni; Gerakari, Maria; Sarri, Efi; Avramidou, Evangelia V.; Gašparović, Mateo; Martinelli, Federico

doi:10.3390/ijms22137118

Cited by 39 publications

(19 citation statements)

References 151 publications

(222 reference statements)

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“…Although these epigenetic modifications are generally not meiotically inherited, they can, in some cases, be passed on to the next generation and form a transgenerational memory. This mechanism could be of great interest for breeding purposes, especially towards the improvement of long-term plant adaptation to fluctuating environments [ 10 , 52 ].…”

Section: Water Stress Memory: From the Plant Sidementioning

confidence: 99%

“…Molecular tools and methods based on multiomics and systems biology approaches can help in identifying the main regulators that are necessary for genetic improvement [ 62 ]. Recent advances in epigenetics allowed the construction of “epi-populations” that can reveal “epi-alleles” whose variants can also be considered as breeding targets [ 10 ]. Then, once the candidate genes have been identified, genome editing tools such as CRISPR-Cas9 [ 63 ] will be useful for gene functional validation.…”

Section: Water Stress Memory: From the Plant Sidementioning

confidence: 99%

“…For example, this mechanism has been well characterized in cold hardening [ 9 ]. Moreover, the information derived from a previous stress can be passed on from parents to offspring through intergenerational and transgenerational stress memory [ 10 , 11 ]. This aspect is not discussed in the present review which focuses only on memory within the plant life cycle.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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 Sidementioning

confidence: 99%

Section: Water Stress Memory: From the Plant Sidementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Drought Stress Memory at the Plant Cycle Level: A Review

Jacques

Salon

Barnard

et al. 2021

Plants

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“…For example, under drought stress, maize natural antisense transcript ( NAT ) genes are induced, and their gene regions are enriched with high levels of histone modifications, such as H3K36me3, H3K9ac, and H3K4me3 [ 58 ]. Under continuous stress, the identification of epigenetic markers that are heritable and transmitted to their progeny is of primary importance [ 59 ]. The role of DNA methylation variations in rice adaptations to drought stress was discovered by applying drought conditions to two rice varieties for 11 successive generations [ 60 ].…”

Section: Methods For Mining Genes Related To Drought Tolerancementioning

confidence: 99%

Exploitation of Drought Tolerance-Related Genes for Crop Improvement

Wang

et al. 2021

IJMS

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Drought has become a major threat to food security, because it affects crop growth and development. Drought tolerance is an important quantitative trait, which is regulated by hundreds of genes in crop plants. In recent decades, scientists have made considerable progress to uncover the genetic and molecular mechanisms of drought tolerance, especially in model plants. This review summarizes the evaluation criteria for drought tolerance, methods for gene mining, characterization of genes related to drought tolerance, and explores the approaches to enhance crop drought tolerance. Collectively, this review illustrates the application prospect of these genes in improving the drought tolerance breeding of crop plants.

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“…Epigenetic markings and histone modifications have a major function in gene regulation and expressional control. Many stresses, including biotic and abiotic stress factors, impose histone modifications [ 9 ]. The epigenetic control of plant stress under different biotic interventions is discussed later in this article.…”

Section: Stress Memory In Plantsmentioning

confidence: 99%

Plant Responses to Biotic Stress: Old Memories Matter

Bhar

Chakraborty

Roy

2021

Plants

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Plants are fascinating organisms present in most ecosystems and a model system for studying different facets of ecological interactions on Earth. In the environment, plants constantly encounter a multitude of abiotic and biotic stresses. The zero-avoidance phenomena make them more resilient to such environmental odds. Plants combat biotic stress or pathogenic ingression through a complex orchestration of intracellular signalling cascades. The plant–microbe interaction primarily relies on acquired immune response due to the absence of any specialised immunogenic cells for adaptive immune response. The generation of immune memory is mainly carried out by T cells as part of the humoral immune response in animals. Recently, prodigious advancements in our understanding of epigenetic regulations in plants invoke the “plant memory” theory afresh. Current innovations in cutting-edge genomic tools have revealed stress-associated genomic alterations and strengthened the idea of transgenerational memory in plants. In plants, stress signalling events are transferred as genomic imprints in successive generations, even without any stress. Such immunogenic priming of plants against biotic stresses is crucial for their eco-evolutionary success. However, there is limited literature capturing the current knowledge of the transgenerational memory of plants boosting biotic stress responses. In this context, the present review focuses on the general concept of memory in plants, recent advancements in this field and comprehensive implications in biotic stress tolerance with future perspectives.

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Deciphering the Epigenetic Alphabet Involved in Transgenerational Stress Memory in Crops

Cited by 39 publications

References 151 publications

Drought Stress Memory at the Plant Cycle Level: A Review

Drought Stress Memory at the Plant Cycle Level: A Review

Exploitation of Drought Tolerance-Related Genes for Crop Improvement

Plant Responses to Biotic Stress: Old Memories Matter

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