The jasmonic acid signaling pathway is linked to auxin homeostasis through the modulation of <i><scp>YUCCA</scp>8</i> and <i><scp>YUCCA</scp>9</i> gene expression

Hentrich, Mathias; Böttcher, Christine; Düchting, Petra; Cheng, Youfa; Zhao, Yunde; Berkowitz, Oliver; Masle, Josette; Medina, Joaquı́n; Pollmann, Stephan

doi:10.1111/tpj.12152

Cited by 199 publications

(194 citation statements)

References 78 publications

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“…We confirmed this by removing leaf blades, which resulted in inhibition of regeneration. YUC9 expression has been shown to respond to methyl-jasmonate (MeJA) treatment in a COI1-dependent manner (Hentrich et al, 2013). As excision of whole leaves or leaf blades involves wounding and therefore MeJA production, MeJA might activate YUC9 expression to rapid increase auxin levels in leaf blades, likely in combination with YUC1 and YUC4 activity.…”

Section: Vasculature Proliferation and Endogenous Callus Formationmentioning

confidence: 99%

“…The reporter lines Pro IPT3 :GUS, Pro IPT5 :GUS (Miyawaki et al, 2004), Pro LOG4 :GUS s (Kuroha et al, 2009) obtained from RIKEN, and Pro ARR5 :GUS (D' Agostino et al, 2000) were used for tracing cytokinin biosynthesis and signaling during rooting. Pro YUC8 :GUS, Pro YUC9 :GUS (Hentrich et al, 2013) and Pro DR5 :GUS (Ulmasov et al, 1997) were used to investigate auxin biosynthesis and signaling; Pro PIN3 : PIN3:GFP (Xu et al, 2006) and Pro PIN4 :GUS (Friml et al, 2004) were used for auxin transport. To trace the molecular mechanisms during de novo root formation we used: Pro WIND1 :GUS (Iwase et al, 2011), Pro WOX11 :GUS , Pro WOX5 :GUS (Sarkar et al, 2007), and Pro SKP2Bs :GUS (Manzano et al, 2012), which corresponds to a promoter deletion containing 0.5 Kb upstream from the ATG.…”

Section: Plant Materialsmentioning

confidence: 99%

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Regulation of Hormonal Control, Cell Reprogramming, and Patterning during De Novo Root Organogenesis

et al. 2017

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Body regeneration through formation of new organs is a major question in developmental biology. We investigated de novo root formation using whole leaves of Arabidopsis (Arabidopsis thaliana). Our results show that local cytokinin biosynthesis and auxin biosynthesis in the leaf blade followed by auxin long-distance transport to the petiole leads to proliferation of J0121-marked xylem-associated tissues and others through signaling of INDOLE-3-ACETIC ACID INDUCIBLE28 (IAA28), CRANE (IAA18), WOODEN LEG, and ARABIDOPSIS RESPONSE REGULATORS1 (ARR1), ARR10, and ARR12. Vasculature proliferation also involves the cell cycle regulator KIP-RELATED PROTEIN2 and ABERRANT LATERAL ROOT FORMATION4, resulting in a mass of cells with rooting competence that resembles callus formation. Endogenous callus formation precedes specification of postembryonic root founder cells, from which roots are initiated through the activity of SHORT-ROOT, PLETHORA1 (PLT1), and PLT2. Primordia initiation is blocked in shr plt1 plt2 mutant. Stem cell regulators SCHIZORIZA, JACKDAW, BLUEJAY, and SCARECROW also participate in root initiation and are required to pattern the new organ, as mutants show disorganized and reduced number of layers and tissue initials resulting in reduced rooting. Our work provides an organ regeneration model through de novo root formation, stating key stages and the primary pathways involved.Plants have striking regeneration capacities, and can produce new organs from postembryonic tissues (Hartmann et al., 2010;Chen et al., 2014;Liu et al., 2014) as well as reconstitute damaged organs upon wounding (Xu et al., 2006;Heyman et al., 2013; PerianezRodriguez et al., 2014;Melnyk et al., 2015;Efroni et al., 2016). Intriguingly, root regeneration upon stem cell damage recruits embryonic pathways (Hayashi et al., 2006;Efroni et al., 2016), whereas in contrast, postembryonic formation of whole new organs, such as lateral roots, appears to use specific postembryonic pathways (Lavenus et al., 2013).Cross talk between auxin and cytokinin signaling is required for many aspects of plant development and regeneration (El-Showk et al., 2013), although how their synergistic interaction is implemented at the molecular level has not been clarified (Skoog and Miller, 1957;Chandler and Werr, 2015). Exogenous in vitro supplementation of these two hormones results in continuous cell proliferation, to form a characteristic structure termed "callus". Callus emerges as a common regenerative mechanism for almost all plant organs through in vitro culture (Atta et al., 2009;Sugimoto et al., 2010). There is increasing evidence that callus formation requires hormone-mediated activation of a lateral and meristematic root development program in pericycle-like cells defined by expression of the J0121 marker 1 This work was supported by grants from Ministerio de Economía y Competitividad (MINECO) of Spain, the European Regional Development Fund (ERDF) and FP7 Funds of the European Commission, BFU2013-41160-P, BFU2016-80315-P, and PCIG11-GA-2012-322082 to M.A....

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Section: Vasculature Proliferation and Endogenous Callus Formationmentioning

confidence: 99%

Section: Plant Materialsmentioning

confidence: 99%

Regulation of Hormonal Control, Cell Reprogramming, and Patterning during De Novo Root Organogenesis

et al. 2017

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“…Endogenous Auxin Overproduction Partially Rescued smo2-1 smo2-2 Embryonic Lethality and Fully Rescued smo2-1 smo2-2/+ Mutant Phenotypes Previous studies in Arabidopsis have indicated that YUC9 OE contributes to the overproduction of free IAA (Hentrich et al, 2013). To examine the effects of endogenously overproduced auxin on smo2 double mutants, we crossed YUC9 OE transgenic plants with smo2-1/+ smo2-2 and smo2-1 smo2-2/+ mutants.…”

Section: -E)mentioning

confidence: 99%

Sterol Methyl Oxidases Affect Embryo Development via Auxin-Associated Mechanisms

et al. 2016

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ORCID ID: 0000-0001-6472-6829 (S.M.).Sterols are essential molecules for multiple biological processes, including embryogenesis, cell elongation, and endocytosis. The plant sterol biosynthetic pathway is unique in the involvement of two distinct sterol 4a-methyl oxidase (SMO) families, SMO1 and SMO2, which contain three and two isoforms, respectively, and are involved in sequential removal of the two methyl groups at C-4. In this study, we characterized the biological functions of members of the SMO2 gene family. SMO2-1 was strongly expressed in most tissues during Arabidopsis (Arabidopsis thaliana) development, whereas SMO2-2 showed a more specific expression pattern. Although single smo2 mutants displayed no obvious phenotype, the smo2-1 smo2-2 double mutant was embryonic lethal, and the smo2-1 smo2-2/+ mutant was dwarf, whereas the smo2-1/+ smo2-2 mutant exhibited a moderate phenotype. The phenotypes of the smo2 mutants resembled those of auxin-defective mutants. Indeed, the expression of DR5 rev :GFP, an auxin-responsive reporter, was reduced and abnormal in smo2-1 smo2-2 embryos. Furthermore, the expression and subcellular localization of the PIN1 auxin efflux facilitator also were altered. Consistent with these observations, either the exogenous application of auxin or endogenous auxin overproduction (YUCCA9 overexpression) partially rescued the smo2-1 smo2-2 embryonic lethality. Surprisingly, the dwarf phenotype of smo2-1 smo2-2/+ was completely rescued by YUCCA9 overexpression. Gas chromatography-mass spectrometry analysis revealed a substantial accumulation of 4a-methylsterols, substrates of SMO2, in smo2 heterozygous double mutants. Together, our data suggest that SMO2s are important for correct sterol composition and function partially through effects on auxin accumulation, auxin response, and PIN1 expression to regulate Arabidopsis embryogenesis and postembryonic development.Sterols are isoprenoid-derived molecules that have diverse and essential functions in eukaryotes. Sterols are structural membrane components required for proper membrane permeability, fluidity, and membrane protein trafficking/localization. Silencing of the SQUALENE SYNTHASE1 gene compromised the resistance of tobacco (Nicotiana tabacum) to bacterial pathogens because of increased membrane leakage (Wang et al., 2012). Disturbed membrane sterol composition in the Arabidopsis (Arabidopsis thaliana) cyclopropylsterol isomerase1-1 (cpi1-1) mutant affected the polar localization of the PIN2 auxin efflux protein and the cell plate distribution of KNOLLE syntaxin by inhibiting the endocytosis of these proteins (Men et al., 2008;Boutté et al., 2010). Moreover, sterol-enriched plasma membrane microdomains (lipid rafts) have been proposed to act as signaling platforms (Mongrand et al., 2004(Mongrand et al., , 2010Martin et al., 2005).Plant sterols are precursors for the biosynthesis of brassinosteroids (BRs), a group of phytohormones that are essential for plant growth and development. However, increasing evidence indicates that plant ster...

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“…In A. thaliana, JAMe inhibits primary root elongation via stimulation of YUC8 and YUC9 expression involved in auxin biosynthesis [33]. Gutierrez et al [34] proposed that auxin, through the positive regulators ARF6 and ARF8, induces the formation of adventitious roots by stimulating the expression of auxin-inducible genes encoding acyl-acid-amido synthetases (GH3.3, GH3.5, and GH3.6), consequently causing JA conjugation and reduction the level of free JA.…”

Section: Introductionmentioning

confidence: 99%

Auxin increases the InJMT expression and the level of JAMe – inhibitor of flower induction in Ipomoea nil

et al. 2016

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Interactions among jasmonates and auxin in the photoperiodic flower induction of a short-day plant Ipomoea nil were examined. Therefore, we measured changes in jasmonic acid (JA) and jasmonic acid methyl ester (JAMe) levels in the cotyledons of I. nil during the inductive night, as well as the effects of indole-3-acetic acid (IAA) on their content. We noticed an interesting result, that IAA applied on the cotyledons of I. nil is an effective stimulator of JAMe production in seedlings cultivated under inductive night conditions. IAA treatment also significantly increased the transcriptional activity of InJMT (JASMONIC ACID CARBOXYL METHYL-TRANSFERASE), while did not affect the expression of JA biosynthesis genes (lipoxyganease, allene oxide synthase, 12-oxophytodienoate reductase). These data, as well as the results of our previous research, suggest that exogenous IAA participates in I. nil flower induction process by stimulating InJMT expression and, as a consequence of that, enhancing the level of JAMe, a flowering inhibitor.

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The jasmonic acid signaling pathway is linked to auxin homeostasis through the modulation of YUCCA8 and YUCCA9 gene expression

Cited by 199 publications

References 78 publications

Regulation of Hormonal Control, Cell Reprogramming, and Patterning during De Novo Root Organogenesis

Regulation of Hormonal Control, Cell Reprogramming, and Patterning during De Novo Root Organogenesis

Sterol Methyl Oxidases Affect Embryo Development via Auxin-Associated Mechanisms

Auxin increases the InJMT expression and the level of JAMe – inhibitor of flower induction in Ipomoea nil

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