Target-mimicry based miRNA167-diminution ameliorates cotton somatic embryogenesis via transcriptional biases of auxin signaling associated miRNAs and genes

Arora, Sakshi; Singh, Amarjeet; Chaudhary, Bhupendra

doi:10.1007/s11240-020-01810-9

Cited by 15 publications

(12 citation statements)

References 73 publications

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“…In what concerns SE, the involvement of these miRNAs in embryo development has not yet been reported. However, low levels of miR167 expression in cotton embryogenic calli as compared with non-embryogenic have been associated to a higher magnitude of SE in vitro [80], which is consistent with the results obtained for miR167-mimic transgenic calli in a recent study [88].…”

Section: Auxins and Mirna-arf Interactionssupporting

confidence: 90%

“…In the same study, different genes showed significant differences in expression in MIM167 transformed lines when compared to control, namely auxin-response GRETCHEN HAGEN 3 ( GH3 ), auxin transporter AUX1 , auxin influx/efflux carrier LAX3 , encoding an AUX1-like protein 3, and PIN-FORMED1 ( PIN1 ) and PIN2 genes, suggesting that diminution of miR167 led to enhanced cellular auxin signaling. Other miRNAs associated with auxin signaling, such as miR160, miR393, miR166, miR156 and miR157 were differentially expressed in MIM167 lines, suggesting that the expression of these miRNAs is influenced by the diminution of miR167 [ 88 ].…”

Section: Induction and Early Somatic Embryogenesismentioning

confidence: 99%

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Small Non-Coding RNAs at the Crossroads of Regulatory Pathways Controlling Somatic Embryogenesis in Seed Plants

Alves

Cordeiro

Correia

et al. 2021

Plants

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Small non-coding RNAs (sncRNAs) are molecules with important regulatory functions during development and environmental responses across all groups of terrestrial plants. In seed plants, the development of a mature embryo from the zygote follows a synchronized cell division sequence, and growth and differentiation events regulated by highly regulated gene expression. However, given the distinct features of the initial stages of embryogenesis in gymnosperms and angiosperms, it is relevant to investigate to what extent such differences emerge from differential regulation mediated by sncRNAs. Within these, the microRNAs (miRNAs) are the best characterized class, and while many miRNAs are conserved and significantly represented across angiosperms and other seed plants during embryogenesis, some miRNA families are specific to some plant lineages. Being a model to study zygotic embryogenesis and a relevant biotechnological tool, we systematized the current knowledge on the presence and characterization of miRNAs in somatic embryogenesis (SE) of seed plants, pinpointing the miRNAs that have been reported to be associated with SE in angiosperm and gymnosperm species. We start by conducting an overview of sncRNA expression profiles in the embryonic tissues of seed plants. We then highlight the miRNAs described as being involved in the different stages of the SE process, from its induction to the full maturation of the somatic embryos, adding references to zygotic embryogenesis when relevant, as a contribution towards a better understanding of miRNA-mediated regulation of SE.

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Section: Auxins and Mirna-arf Interactionssupporting

confidence: 90%

Section: Induction and Early Somatic Embryogenesismentioning

confidence: 99%

Small Non-Coding RNAs at the Crossroads of Regulatory Pathways Controlling Somatic Embryogenesis in Seed Plants

Alves

Cordeiro

Correia

et al. 2021

Plants

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“…In citrus, the abundances of miR167 transcripts was increased continuously and reached the highest level at cotyledonary embryo (CE) stage (Wu et al 2011), and a similar expression pattern was also reported in Japanese larch (Zhang et al 2012). Overexpression of miR167 inhibited the SE formation (Su et al 2016), and diminution of miR167 activity enhanced callogenesis and somatic embryogenesis (Arora et al 2020). LEC2 is an important positive regulator in plant somatic embryogenesis, which promotes embryogenic induction in somatic tissues of Arabidopsis, via YUC -mediated auxin biosynthesis (Barbara et al 2013).…”

Section: Mir167 and Targetsmentioning

confidence: 54%

miRNAs as key regulators via targeting the phytohormone signaling pathways during somatic embryogenesis of plants

et al. 2020

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Somatic embryogenesis is the regeneration of embryos from the somatic cell via dedifferentiation and redifferentiation without the occurrence of fertilization. A complex network of genes regulates the somatic embryogenesis process. Especially, microRNAs (miRNAs) have emerged as key regulators by affecting phytohormone biosynthesis, transport and signal transduction pathways. miRNAs are small, non-coding small RNA regulatory molecules involved in various developmental processes including somatic embryogenesis. Several types of miRNAs such as miR156, miR157, miR 159, miR 160, miR165, miR166, miR167, miR390, miR393 and miR396 have been reported to intricate in regulating somatic embryogenesis via targeting the phytohormone signaling pathways. Here we review current research progress on the miRNA-mediated regulation involved in somatic embryogenesis via regulating auxin, ethylene, abscisic acid and cytokinin signaling pathways. Further, we also discussed the possible role of other phytohormone signaling pathways such as gibberellins, jasmonates, nitric oxide, polyamines and brassinosteroids. Finally, we conclude by discussing the expression of miRNAs and their targets involved in somatic embryogenesis and possible regulatory mechanisms cross talk with phytohormones during somatic embryogenesis.

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“…miR167 reached the highest level in Citrus reticulata Blanco cotyledonary embryogenesis [78]. The reduction of miR167 activity promoted the formation of corpus callosum and somatic embryogenesis [79]. Auxin is essential for somatic embryogenesis, ARF6 and ARF8 are necessary for auxin gradient reaction, and auxin gradient related expression is activated by selenium [80].…”

Section: Mir167 Regulates Plant Embryo and Seed Developmentmentioning

confidence: 99%

Advances in the regulation of plant development and stress response by miR167

Liu

Huang

Xie

2021

Front. Biosci. (Landmark Ed)

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MicroRNAs (miRNAs) are a class of endogenous, non-coding small RNA that cleavage mRNA targets in sequence-specific manner or the inhibition of translation, which regulates gene expression at the post-transcriptional level. miRNAs are involved in the regulation of plant growth, metabolism and stress response. miR167 family is one of the highly conserved miRNA families in plants. It functions mainly by regulating the auxin response factors (ARFs) and IAA-Ala resistant3 (IAR3) genes, and participates in regulating the development of roots, stems, leaves and flowers, flowering time, embryonic development, seed development and stress response. Here, we reviewed the biological functions of miR167 family and its target genes in plant growth and development and stress response, and fur-ther discussed the application prospect of miR167 in agricultural production. Furthermore, this review provides references for the further study of miR167 family in plants.

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Target-mimicry based miRNA167-diminution ameliorates cotton somatic embryogenesis via transcriptional biases of auxin signaling associated miRNAs and genes

Cited by 15 publications

References 73 publications

Small Non-Coding RNAs at the Crossroads of Regulatory Pathways Controlling Somatic Embryogenesis in Seed Plants

Small Non-Coding RNAs at the Crossroads of Regulatory Pathways Controlling Somatic Embryogenesis in Seed Plants

miRNAs as key regulators via targeting the phytohormone signaling pathways during somatic embryogenesis of plants

Advances in the regulation of plant development and stress response by miR167

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