Journal of Plant Biology, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 10, 2025
Language: Английский
Molecular Horticulture, Journal Year: 2021, Volume and Issue: 1(1)
Published: June 16, 2021
Abstract Leaf senescence, the last stage of leaf development, is a type postmitotic senescence and characterized by functional transition from nutrient assimilation to remobilization which essential for plants’ fitness. The initiation progression are regulated variety internal external factors such as age, phytohormones, environmental stresses. Significant breakthroughs in dissecting molecular mechanisms underpinning have benefited identification senescence-altered mutants through forward genetic screening assessment hundreds senescence-associated genes ( SAGs ) via reverse research model plant Arabidopsis thaliana well crop plants. involves highly complex programs that tightly tuned multiple layers regulation, including chromatin transcription post-transcriptional, translational post-translational regulation. Due significant impact on photosynthesis, remobilization, stress responses, productivity, much effort has been made devising strategies based known regulatory manipulate aiming higher yield, better quality, or improved horticultural performance This review aims provide an overview discuss recent advances multi-dimensional regulation network perspectives. We also put key issues need be addressed, nature stay-green trait, coordination between different pathways, source-sink relationship researches senescence.
Language: Английский
Citations
262
Frontiers in Genetics, Journal Year: 2020, Volume and Issue: 11
Published: July 28, 2020
It has long been recognized that hybridization and polyploidy are prominent processes in plant evolution. Although classically as significant speciation adaptation, recognition of the importance interspecific gene flow dramatically increased during genomics era, concomitant with an unending flood empirical examples, or without genome doubling. Interspecific is thus increasingly thought to lead evolutionary innovation diversification, via adaptive introgression, homoploid hybrid allopolyploid speciation. Less well understood, however, suite genetic genomic mechanisms set motion by merger differentiated genomes, temporal scale over which recombinational complexity mediated might be expressed exposed natural selection. We focus on these issues here, considering types molecular saltational event between two diverged species, either doubling, how various can contribute novel phenotypes. Genetic include infusion new alleles genesis structural variation including translocations inversions, homoeologous exchanges, transposable element mobilization insertional effects, presence-absence copy number variation. Polyploidy generates massive transcriptomic regulatory alteration, presumably disrupted stoichiometries factors, small RNAs other interactions cascade from single-gene expression change up through entire networks transformed modules. highlight both combinatorial possibilities range scales such generated, selection drift.
Language: Английский
Citations
131
Biology, Journal Year: 2021, Volume and Issue: 10(8), P. 766 - 766
Published: Aug. 11, 2021
Epigenetics has emerged as an important research field for crop improvement under the on-going climatic changes. Heritable epigenetic changes can arise independently of DNA sequence alterations and have been associated with altered gene expression transmitted phenotypic variation. By modulating plant development physiological responses to environmental conditions, diversity—naturally, genetically, chemically, or environmentally induced—can help optimise traits in era challenged by global climate change. Beyond variation, modifications may contribute breeding providing useful markers allowing use epigenome diversity predict performance increase final production. Given difficulties transferring knowledge mechanisms from model plants crops, various strategies emerged. Among those are modelling frameworks dedicated predicting epigenetically controlled-adaptive traits, epigenetics vitro regeneration accelerate breeding, specific marks that modulate interest. The key challenge agriculture faces 21st century is production speeding up resilient species. Therefore, provides fundamental molecular information potential direct applications enhancement, tolerance, adaptation within context
Language: Английский
Citations
93
Planta, Journal Year: 2019, Volume and Issue: 250(1), P. 23 - 40
Published: April 16, 2019
Language: Английский
Citations
81
New Phytologist, Journal Year: 2021, Volume and Issue: 233(1), P. 66 - 83
Published: Aug. 29, 2021
Summary The plant immune system protects against pests and diseases. recognition of stress‐related molecular patterns triggers localised responses, which are often followed by longer‐lasting systemic priming and/or up‐regulation defences. In some cases, this induced resistance (IR) can be transmitted to following generations. Such transgenerational IR is gradually reversed in the absence stress at a rate that proportional severity disease experienced previous This review outlines mechanisms epigenetic responses pathogen infection shape across expanding time scales. We cis ‐ trans ‐acting stress‐inducible changes transposable elements (TEs) regulate genome‐wide defence gene expression draw particular attention one regulatory model supported recent evidence about function AGO1 H2A.Z transcriptional control genes. Additionally, we explore how stress‐induced mobilisation epigenetically controlled TEs acts as catalyst Darwinian evolution generating (epi)genetic diversity environmentally responsive raises questions long‐term evolutionary consequences diversification relation long‐held dichotomy between Lamarckian evolution.
Language: Английский
Citations
74
Frontiers in Plant Science, Journal Year: 2021, Volume and Issue: 12
Published: Dec. 6, 2021
Leaf senescence is the last stage of leaf development and an orderly biological process accompanied by degradation macromolecules nutrient recycling, which contributes to plant fitness. Forward genetic mutant screening reverse studies senescence-associated genes (SAGs) have revealed that a genetically regulated process, initiation progression are influenced array internal external factors. Recently, multi-omics techniques subjected multiple layers regulation, including chromatin, transcriptional post-transcriptional, as well translational post-translational levels. Although impressive progress has been made in research, especially identification functional analysis large number SAGs crop plants, we still not unraveled mystery senescence, there some urgent scientific questions this field, such when initiated how signals transmitted. This paper reviews recent advances regulation on post-transcriptional alternative splicing.
Language: Английский
Citations
57
Planta, Journal Year: 2022, Volume and Issue: 256(1)
Published: June 10, 2022
Language: Английский
Citations
51
Plant Communications, Journal Year: 2024, Volume and Issue: 5(5), P. 100824 - 100824
Published: Jan. 23, 2024
Clubroot caused by the protist Plasmodiophora brassicae is a major disease affecting cultivated Brassicaceae. Using combination of quantitative trait locus (QTL) fine mapping, CRISPR-Cas9 validation, and extensive analyses DNA sequence methylation patterns, we revealed that two adjacent neighboring NLR (nucleotide-binding leucine-rich repeat) genes AT5G47260 AT5G47280 cooperate in controlling broad-spectrum partial resistance to root pathogen P. Arabidopsis they are epigenetically regulated. The variation not associated with any nucleotide or transposable element presence/absence variants stably inherited. Variations at Pb-At5.2 QTL widespread across accessions correlate negatively variations expression genes. Our study demonstrates natural, stable, transgenerationally inherited epigenetic can play an important role shaping plant pathogens modulating immune receptors.
Language: Английский
Citations
11
PLoS Genetics, Journal Year: 2018, Volume and Issue: 14(11), P. e1007469 - e1007469
Published: Nov. 5, 2018
The contribution of epigenetic variation to phenotypic is unclear. Imprinted genes, because their strong association with modifications, represent an opportunity for the discovery such phenomena. In mammals and flowering plants, a subset genes are expressed from only one parental allele in process called gene imprinting. Imprinting associated differential DNA methylation chromatin modifications between alleles. plants imprinting occurs seed tissue - endosperm. Proper endosperm development essential production viable seeds. We previously showed that Arabidopsis thaliana intraspecific correlated naturally occurring polymorphisms. Here, we investigated mechanisms function allele-specific class IV homeodomain leucine zipper (HD-ZIP) transcription factor HDG3. imprinted strains, HDG3 primarily methylated paternally inherited allele. manipulated state endogenous non-imprinted strain demonstrated proximal transposable element sufficient promote expression Gain was earlier cellularization changes weight. These results indicate alone explain demonstrate epialleles can underlie phenotypes.
Language: Английский
Citations
70
Nucleic Acids Research, Journal Year: 2019, Volume and Issue: 48(D1), P. D1069 - D1075
Published: Oct. 4, 2019
Abstract The leaf senescence database (LSD) is a comprehensive resource of senescence-associated genes (SAGs) and their corresponding mutants. Through manual curation extensive annotation, we updated the LSD to new version 3.0, which contains 5853 617 mutants from 68 species. To provide sustainable reliable services for plant research community, 3.0 (https://bigd.big.ac.cn/lsd/) has been moved maintained by National Genomics Data Center at Beijing Institute Genomics, Chinese Academy Sciences. In current release, added some features: (i) Transcriptome data in poplar were integrated; (ii) Leaf transcriptome information Arabidopsis, rice soybean included; (iii) Senescence-differentially expressed small RNAs (Sen-smRNA) Arabidopsis identified; (iv) Interaction pairs between Sen-smRNAs transcription factors (Sen-TF) established; (v) Senescence phenotypes 90 natural accessions (ecotypes) 42 images ecotypes incorporated; (vi) Mutant seed SAGs obtained Kitbase was (vii) New options search engines implemented. Together, bears great utility continue users with useful resources studies senescence.
Language: Английский
Citations
67