DNA Methylation and Chromatin Regulation during Fleshy Fruit Development and Ripening

Frontiers in Plant Science, Год журнала: 2016, Номер 7

Опубликована: Июнь 13, 2016

Fruit ripening is a developmental process that results in the leaf-like carpel organ of flower becoming mature ovary primed for dispersal seeds. Ripening fleshy fruits involves profound metabolic phase change under strict hormonal and genetic control. This work reviews recent developments our understanding epigenetic regulation fruit ripening. We start by describing current state art about processes involved histone post-translational modifications remodeling chromatin structure their impact on development However, focus review consequences changes DNA methylation levels expression ripening-related genes. includes those result heritable phenotypic variation absence sequence alterations, mechanisms initiation maintenance. The majority studies described literature involve tomato, but evidence emerging other species may also be discuss how differences provide new targets breeding crop improvement.

Язык: Английский

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Salicylic acid and nitric oxide signaling in plant heat stress

Physiologia Plantarum, Год журнала: 2019, Номер 168(2), С. 241 - 255

Опубликована: Март 7, 2019

In agriculture, heat stress (HS) has become one of the eminent abiotic threats to crop growth, productivity and nutritional security because continuous increase in global mean temperature. Studies have annotated that response (HSR) plants is highly conserved, involving complex regulatory networks various signaling sensor molecules. this context, ubiquitous‐signaling molecules salicylic acid (SA) nitric oxide (NO) diverted attention plant science community their putative roles biotic tolerance. However, involvement transcriptional HS tolerance still poorly understood. review, we conceptualized current knowledge concerning how SA NO sense they trigger HSR leading activation transcriptional‐signaling cascades. Fundamentals functional components associated with molecular mechanisms involved SA/NO‐mediated also been discussed. Increasing evidences suggested epigenetic modifications development a ‘stress memory’, thereby provoking role regulation plant's innate immunity under HS. Thus, explored recent advancements regarding biological underlying significance regulations responsive genes transcription factors by providing conceptual frameworks for understanding behind ‘transcriptional memory’ as potential memory tools HSR.

Язык: Английский

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Double-edged sword: The evolutionary consequences of the epigenetic silencing of transposable elements

PLoS Genetics, Год журнала: 2020, Номер 16(7), С. e1008872 - e1008872

Опубликована: Июль 16, 2020

Transposable elements (TEs) are genomic parasites that selfishly replicate at the expense of host fitness. Fifty years evolutionary studies TEs have concentrated on deleterious genetic effects TEs, such as their disrupting genes and regulatory sequences. However, a flurry recent work suggests there is another important source TEs’ harmful effects—epigenetic silencing. Host genomes typically silence by deposition repressive epigenetic marks. While this silencing reduces selfish replication should benefit hosts, picture emerging triggers inadvertent spreading marks to otherwise expressed neighboring genes, ultimately jeopardizing In Review, we provide long-overdue overview genome-wide evidence for presence prevalence effects, highlighting both similarities differences across mammals, insects, plants. We lay out current understanding functional fitness consequences propose possible influences evolution hosts themselves. These unique indicate effect not only crucial component TE biology but could also be significant contributor genome function evolution.

Язык: Английский

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Epigenetic inheritance and plant evolution

Population Ecology, Год журнала: 2019, Номер 62(1), С. 17 - 27

Опубликована: Июль 30, 2019

Abstract Being sessile organisms, plants show a high degree of developmental plasticity to cope with constantly changing environment. While in is largely controlled genetically, recent studies have demonstrated the importance epigenetic mechanisms, especially DNA methylation, for gene regulation and phenotypic response internal external stimuli. Induced changes can be source variations natural plant populations that inherited by progeny multiple generations. Whether are advantageous given environment, whether they subject selection great interest, their roles adaptation evolution an area active research ecology. This review focused on role heritable variation induced environmental changes, its potential influence plants.

Язык: Английский

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Molecular phenology in plants: in natura systems biology for the comprehensive understanding of seasonal responses under natural environments

New Phytologist, Год журнала: 2015, Номер 210(2), С. 399 - 412

Опубликована: Ноя. 2, 2015

Summary Phenology refers to the study of seasonal schedules organisms. Molecular phenology is defined here as patterns organisms captured by molecular biology techniques. The history reviewed briefly in relation advances quantification technology gene expression. High‐resolution ( HMP ) data have enabled us with an approach natura systems biology. I review recent analyses FLOWERING LOCUS C FLC ), a temperature‐responsive repressor flowering, along six steps typical flow extensive studies regulation made this example successful case which comprehensive understanding functions has been progressing. ‐mediated long‐term memory past temperatures creates time lags other signals, such photoperiod and short‐term temperature. Major signals that control flowering phase lag between them under natural conditions, hypothetical calendars are proposed mechanisms season detection plants. Transcriptomic brings novel strategy phenology, because it provides representation plant functions. discuss future perspectives from standpoints biology, evolutionary ecology. Contents 399 I. Introduction 400 II. Definition methodological advance 401 III. In using high‐resolution (HMP) 402 IV. Predicting properties temperature‐responding machinery (Step 1) V. candidate regulatory system for temperature 2) 404 VI. 3) 405 VII. Development phenology‐based mechanistic model 4) 406 VIII. New insight into analysis mechanism: digital repression 5) IX. signals: calendar hypotheses 6) 407 X. (revolution Step 409 XI. Perspectives: circles Acknowledgements 410 References

Язык: Английский

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