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Induction of miR162 contributes to invasive habitat adaption of Alternanthera philoxeroides

ABSTRACT: Induction of miR162 contributes to invasive habitat adaption of Alternanthera philoxeroides

PROVIDER: PRJNA1191846 | ENA |

REPOSITORIES: ENA

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			Action	DRS
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	SRR31543234.fastq.gz	Fastqsanger.gz
	SRR31543236.fastq.gz	Fastqsanger.gz
	SRR31543239.fastq.gz	Fastqsanger.gz
	SRR31543242.fastq.gz	Fastqsanger.gz

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Induction of miR162 contributes to invasive habitat adaption of Alternanthera philoxeroides

Project description:Rapid phenotypic changes in adaptive traits are crucial for organisms to thrive in changing environments. Alternanthera philoxeroides, originally a terrestrial plant from South America, has become an invasive weed in Asia, capable of colonizing both aquatic and terrestrial habitats. The mechanism by which this invasive habitat is rapidly achieved without genetic variation remains unknown. Here, we demonstrate that miRNA activity in A. philoxeroides plays a significant role in its high invasive capacity. Our results highlight that an intact miRNA pathway is essential for the survival of A.philoxeroides in aquatic habitats. We identified one key miRNA, Aph-miR162, that promotes rapid elongation of stem in aquatic environments. Upon water submergence, the levels of miR162 significantly increased in stems from 3 hours to 24 hours. TRV based VIGS-mediated knockdown of Aph-miR162 significantly disrupted stem elongation in water submergence condition, ultimately resulting in a failure of plants protruding from the water surface. Interestingly, miR162 was not up-regulated in the non-invasive sibling species Alternanthera pungens, which also originates from South America but has retained its original terrestrial habitats in Asia. More importantly, delivering the antisense RNA oligos complementary to Aph-miR162 via the nanoparticle method significantly impaired stem elongation upon water submergence, causing A. philoxeroides to wither after 2-3 weeks. Thus, our findings reveal that the miRNA pathway can drive rapid phenotypic variation, facilitating adaptation to aquatic environments. Importantly, miR162 has the potential as a bio-pesticide for controlling the invasive capacity of A. philoxeroides.

2025-06-18 | GSE283087 | GEO

Alternanthera philoxeroides

Project description:Alternanthera philoxeroides Assembly

| PRJNA531860 | ENA

Alternanthera philoxeroides

Project description:Alternanthera philoxeroides overview

| PRJNA271445 | ENA

Alternanthera philoxeroides

Project description:Alternanthera philoxeroides Transcriptome or Gene expression

| PRJNA268359 | ENA

Alternanthera philoxeroides

Project description:Alternanthera philoxeroides Transcriptome or Gene expression

| PRJNA599518 | ENA

Alternanthera philoxeroides

Project description:Alternanthera philoxeroides Transcriptome or Gene expression

| PRJNA256235 | ENA

Alternanthera philoxeroides

Project description:Alternanthera philoxeroides Transcriptome or Gene expression

| PRJNA256237 | ENA

Alternanthera philoxeroides cultivar:Jinan1

Project description:Alternanthera philoxeroides cultivar:Jinan1 Genome sequencing and assembly

| PRJNA541860 | ENA

Alternanthera philoxeroides

Project description:De novo characterization of alligator weed (Alternanthera philoxeroides) transcriptome shedding light on gene expression under potassium deprivation

| PRJNA263573 | ENA

Comparative transcriptome analysis reveals ecological adaption of cold tolerance in northward invasion of Alternanthera philoxeroides.

Project description:BackgroundAlternanthera philoxeroides (alligator weed) is a highly invasive alien plant that has continuously and successfully expanded from the tropical to the temperate regions of China via asexual reproduction. During this process, the continuous decrease in temperature has been a key limiting environmental factor.ResultsIn this study, we provide a comprehensive analysis of the cold tolerance of alligator weed via transcriptomics. The transcriptomic differences between the southernmost population and the northernmost population of China were compared at different time points of cold treatments. GO enrichment and KEGG pathway analyses showed that the alligator weed transcriptional response to cold stress is associated with genes encoding protein kinases, transcription factors, plant-pathogen interactions, plant hormone signal transduction and metabolic processes. Although members of the same gene family were often expressed in both populations, the levels of gene expression between them varied. Further ChIP experiments indicated that histone epigenetic modification changes at the candidate transcription factor gene loci are accompanied by differences in gene expression in response to cold, without variation in the coding sequences of these genes in these two populations. These results suggest that histone changes may contribute to the cold-responsive gene expression divergence between these two populations to provide the most beneficial response to chilling stimuli.ConclusionWe demonstrated that the major alterations in gene expression levels belonging to the main cold-resistance response processes may be responsible for the divergence in the cold resistance of these two populations. During this process, histone modifications in cold-responsive genes have the potential to drive the major alterations in cold adaption necessary for the northward expansion of alligator weed.

| S-EPMC7430914 | biostudies-literature

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