2017
DOI: 10.1104/pp.17.00464
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The MicroRNA390/TAS3 Pathway Mediates Symbiotic Nodulation and Lateral Root Growth

Abstract: Legume roots form two types of postembryonic organs, lateral roots and symbiotic nodules. Nodule formation is the result of the interaction of legumes with rhizobia and requires the mitotic activation and differentiation of root cells as well as an independent, but coordinated, program that allows infection by rhizobia. MicroRNA390 (miR390) is an evolutionarily conserved microRNA that targets the Trans-Acting Short Interference RNA3 (TAS3) transcript. Cleavage of TAS3 by ARGONAUTE7 results in the production of… Show more

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Cited by 74 publications
(109 citation statements)
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References 107 publications
(176 reference statements)
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“…However, deregulated auxin activity appears to inhibit post‐initiation development of nodules. For example, exogenous auxin or enhanced sensitivity to auxin inhibited nodule formation in Medicago truncatula (Breakspear et al, ; Hobecker et al, ; van Noorden, Ross, Reid, Barry, & Ulrike, ) and conversely resistance to auxin resulted in enhanced nodule development in this species (Kuppusamy et al, ). In soybean, enhanced sensitivity to auxin resulted in reduced nodule formation (Wang et al, ) and was associated with reduced sensitivity to CK (Turner et al, ).…”
Section: Introductionmentioning
confidence: 99%
“…However, deregulated auxin activity appears to inhibit post‐initiation development of nodules. For example, exogenous auxin or enhanced sensitivity to auxin inhibited nodule formation in Medicago truncatula (Breakspear et al, ; Hobecker et al, ; van Noorden, Ross, Reid, Barry, & Ulrike, ) and conversely resistance to auxin resulted in enhanced nodule development in this species (Kuppusamy et al, ). In soybean, enhanced sensitivity to auxin resulted in reduced nodule formation (Wang et al, ) and was associated with reduced sensitivity to CK (Turner et al, ).…”
Section: Introductionmentioning
confidence: 99%
“…A su vez, la activación de la vía miR390/TAS3, mediante la sobreexpresión ectópica del miR390, regula positivamente el crecimiento de las raíces laterales y negativamente la nodulación (menos cantidad de nódulos formados y nódulos más pequeños) y la infección bacteriana (menos hilos de infección). A su vez, las raíces que sobreexpresan el miR390 presentan una disminución significativa en los niveles de expresión de los transcriptos ARF2/3/4 (Hobecker et al, 2017).…”
Section: Miarns Implicados En La Simbiosisunclassified
“…Los tasiARFs actúan como reguladores post-transcripcionales negativos de los ARNms ARF2, ARF3 y ARF4, uniéndose en uno o dos sitios complementarios (Montgomery et al, 2008). Los ARFs (por Auxine Response Factors) están involucrados en la señalización y respuestas a las auxinas, regulando positivamente el crecimiento lateral de las raíces y ejerciendo una regulación negativa sobre la infección rizobiana y la organogénesis del nódulo en M. truncatula (Hobecker et al, 2017).…”
Section: Figura 47: Abundancia Del Mir390b Por Real Timeunclassified
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