Role of microRNAs and other sRNAs of plants in their changing environments

Kruszka, Katarzyna; Pieczynski, Marcin; Windels, David; Bielewicz, Dawid; Jarmołowski, Artur; Szweykowska-Kulińska, Zofia; Vazquez, Franck

doi:10.1016/j.jplph.2012.03.009

Cited by 133 publications

(96 citation statements)

References 124 publications

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“…[8] However, it is not clear what the role of laccase is in response to cold. [62] StemÀloop qRTÀPCR analysis showed that miR172 was quickly activated by cold stress. Previous reports on miR172 and AP2 showed that miR172 act on both inhibition of the translation of AP2 and degradation of AP2 transcript.…”

Section: ããmentioning

confidence: 99%

Assessment of miRNA expression profile and differential expression pattern of target genes in cold-tolerant and cold-sensitive tomato cultivars

Koç

Filiz

Tombuloğlu

2015

Biotechnology & Biotechnological Equipment

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MircroRNAs (miRNAs) are small non-coding RNAs about 21 nt in length. These short transcripts regulate developmental and stress responses in plants. Cold stress is one of the most restraining abiotic factors adversely affecting the plant yield. In the present study, some cold stress-related miRNAs (miR167, miR169, miR172, miR393 and miR397) in tomato (Solanum lycopersicum) were assessed at early time points (0, 1, 4 and 16 h) of cold exposure. Relative expression of miRNAs was measured by stemÀloop quantitative reverse transcription polymerase chain reaction. The results showed that miR167, miR169, miR172 and miR393 were activated in the early time points of cold treatment. Especially, miR172 was found to have highest expression level. Furthermore, target genes of selected miRNAs were identified and their expression profiles were assessed between cold-sensitive and cold-tolerant cultivars of tomato. It was found that inferred expression patterns of target genes were differentiated between the cultivars. Analysis of cis-acting elements showed that miRNAs had stress-responsive elements. Meanwhile, since no miR393 sequence is available, putative miR393 sequence and its secondary structure were predicted in tomato. These results may provide a framework for further analysis in terms of understanding the response of miRNAs against cold stress in tomato.

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Section: ããmentioning

confidence: 99%

Assessment of miRNA expression profile and differential expression pattern of target genes in cold-tolerant and cold-sensitive tomato cultivars

Koç

Filiz

Tombuloğlu

2015

Biotechnology & Biotechnological Equipment

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“…miRNAs play important roles during plant growth, developmental transitions, and determination of cell identity (Jones- Rhoades et al, 2006;Voinnet, 2009). miRNAs are also involved in the modulation of plant responses to biotic and abiotic stresses (Sunkar and Zhu, 2004;Fujii et al, 2005;Navarro et al, 2008;Khraiwesh et al, 2012;Kruszka et al, 2012;Sunkar et al, 2012). It has been suggested that plant miRNAs that regulate growth and development may also mediate modified growth and development after stress exposure (Sunkar et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Arabidopsis miR156 Regulates Tolerance to Recurring Environmental Stress through SPL Transcription Factors

et al. 2014

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Plants are sessile organisms that gauge stressful conditions to ensure survival and reproductive success. While plants in nature often encounter chronic or recurring stressful conditions, the strategies to cope with those are poorly understood. Here, we demonstrate the involvement of ARGONAUTE1 and the microRNA pathway in the adaptation to recurring heat stress (HS memory) at the physiological and molecular level. We show that miR156 isoforms are highly induced after HS and are functionally important for HS memory. miR156 promotes sustained expression of HS-responsive genes and is critical only after HS, demonstrating that the effects of modulating miR156 on HS memory do not reflect preexisting developmental alterations. miR156 targets SPL transcription factor genes that are master regulators of developmental transitions. SPL genes are posttranscriptionally downregulated by miR156 after HS, and this is critical for HS memory. Altogether, the miR156-SPL module mediates the response to recurring HS in Arabidopsis thaliana and thus may serve to integrate stress responses with development.

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“…A recent study revealed the endoplasmic reticulum as the site of miRNA-mediated translation repression in Arabidopsis thaliana (Li et al, 2013). Plant miRNAs function in a range of developmental processes, ensuring proper embryonic, vegetative, and floral development (Jones- Rhoades et al, 2006) as well as tolerance and responses to extrinsic stresses (Sunkar and Zhu, 2004;Sunkar et al, 2006;Kruszka et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Cleavage of INDOLE-3-ACETIC ACID INDUCIBLE28 mRNA by MicroRNA847 Upregulates Auxin Signaling to Modulate Cell Proliferation and Lateral Organ Growth in Arabidopsis

Wang

Guo

2015

Plant Cell

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MicroRNAs function in a range of developmental processes. Here, we demonstrate that miR847 targets the mRNA of the auxin/indole acetic acid (Aux/IAA) repressor-encoding gene IAA28 for cleavage. The rapidly increased accumulation of miR847 in Arabidopsis thaliana coincided with reduced IAA28 mRNA levels upon auxin treatment. This induction of miR847 by auxin was abolished in auxin receptor tir1-1 and auxin-resistant axr1-3 mutants. Further analysis demonstrates that miR847 functions as a positive regulator of auxin-mediated lateral organ development by cleaving IAA28 mRNA. Importantly, the ectopic expression of miR847 increases the expression of cell cycle genes as well as the neoplastic activity of leaf cells, prolonging later-stage rosette leaf growth and producing leaves with serrated margins. Moreover, both miR847 and IAA28 mRNAs are specifically expressed in marginal meristems of rosette leaves and lateral root initiation sites. Our data indicate that auxin-dependent induction of miR847 positively regulates meristematic competence by clearing IAA28 mRNA to upregulate auxin signaling, thereby determining the duration of cell proliferation and lateral organ growth in Arabidopsis. IAA28 mRNA encodes an Aux/IAA repressor protein, which is degraded through the proteasome in response to auxin. Altered signal sensitization to IAA28 mRNA levels, together with targeted IAA28 degradation, ensures a robust signal derepression.

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Role of microRNAs and other sRNAs of plants in their changing environments

Cited by 133 publications

References 124 publications

Assessment of miRNA expression profile and differential expression pattern of target genes in cold-tolerant and cold-sensitive tomato cultivars

Assessment of miRNA expression profile and differential expression pattern of target genes in cold-tolerant and cold-sensitive tomato cultivars

Arabidopsis miR156 Regulates Tolerance to Recurring Environmental Stress through SPL Transcription Factors

Cleavage of INDOLE-3-ACETIC ACID INDUCIBLE28 mRNA by MicroRNA847 Upregulates Auxin Signaling to Modulate Cell Proliferation and Lateral Organ Growth in Arabidopsis

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