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MiRNA: the taskmaster of plant world

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Abstract

MicroRNAs are small, ubiquitous, non-protein-coding essential endogenous task masters of RNA interference (RNAi). These are more or less 22 nucleotide-long RNAs that repress gene expression post transcriptionally by binding to the 3′ untranslated region of target mRNAs. MicroRNAs are self-regulating transcription units that balancing the physiological processes by maintaining the interaction between various factors. These conserved evolutionary units target the specific mRNAs to mediate post-transcriptional regulation by mean of translational repression changes. The paper highlights the involvement of miRNA biogenesis, mechanism and developmental aspects (such as regulating the flower development, root-shoot development) nutrient uptake, abiotic and biotic stress tolerance. With the introduction of molecular tools, the function of miRNAs will definitely have regarded as multidisciplinary role. Thus, an attempt is made to understand the role of miRNAs in coordinating the regulatory pathways of the plant life cycle.

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Abbreviations

MIRNA:

Microrna

RISC:

RNA induced silencing complex

DCL1:

Dicer-like 1

HEN1:

Hua enhancer 1

SDN:

Small RNA degrading nuclease

AGO:

Argonaute

AP2:

Apetala 2

SPL3:

Squamosa promoter binding protein-like 3

CSD2:

Copper/zinc superoxide dismutase 2

XRN4:

Exoribonuclease 4

AMP1:

Altered meristemprogram1

SGS3:

Suppressor of gene silencing 3

RDR6:

RNA dependent RNA polymerase 6

STM:

shoot meristemless

WUS:

Wushel

CLV:

Clavata

LCR:

Leaf curling respoonsiveness

HD ZIP III:

Class III homeodomain leucine zipper

CUC:

Cup shaped cotyledons

REV:

Revoluta

PHB:

Phabolosa

PHV:

Phavoluta

RDL1:

Rolled leaf 1

ARF3:

Auxin response factor 3

AS1:

Asymmetrica leaves 1

TCP:

Teosente branched 1 cycloidea and PCF

GRFS:

Growth regulating factors

AGL15:

Agamous-Like 15

AG:

Agamous

TOE 3:

Target of eat 3

IDS1:

Indeterminate spikelet 1

FIS:

Fistulata

BL:

Blind

CBF:

CCAAT box binding factor

TIR:

Transport inhiobitor response 1

AFB:

Auxin Signaling F-Box

AUX/IAA:

Auxin/indole acetic acid

SE:

Serrate

SOD:

Superoxide dismutase

COX:

Cytochrome c oxidase

PC:

Plastocyanin

CBFS:

C repeat binding factors

DRE:

Dehydration responsive element

PHO2:

Phosphate 2 gene

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Correspondence to Anuj Choudhary.

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Choudhary, A., Kumar, A., Kaur, H. et al. MiRNA: the taskmaster of plant world. Biologia 76, 1551–1567 (2021). https://doi.org/10.1007/s11756-021-00720-1

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  • DOI: https://doi.org/10.1007/s11756-021-00720-1

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