Signaling in shoot and flower meristems of Arabidopsis thaliana

Holt, Anna L.; Haperen, Johanna Maria Adriana Van; Groot, Edwin P.; Laux, Thomas

doi:10.1016/j.pbi.2013.11.011

Cited by 42 publications

(35 citation statements)

References 49 publications

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“…Expression of flowering-related gene, LFY, can be induced by auxin [Yamaguchi et al, 2013;Holt et al, 2014]. Deficiency of auxin in plant leads to delay of flowering or defect in floral development [Benkova et al, 2003;Heisler et al, 2005;Zhao, 2010].…”

Section: Introductionmentioning

confidence: 99%

Suppression of Arabidopsis flowering by near‐null magnetic field is mediated by auxin

Zhang

et al. 2017

Bioelectromagnetics

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We previously found that flowering of Arabidopsis was suppressed by near-null magnetic field, which was related to cryptochrome. Auxin plays an important role in Arabidopsis flowering. To test whether auxin is involved in the suppression of Arabidopsis flowering by near-null magnetic field, we detected auxin level and expressions of auxin transport and signaling genes in wild-type Arabidopsis plants and cryptochrome double mutant, cry1/cry2, grown in near-null magnetic field. We found that indole-3-acetic acid (IAA) level in roots of wild-type plants in near-null magnetic field was significantly increased compared with the local geomagnetic field control, while IAA level in rosettes of 33-day-old wild-type plants in near-null magnetic field was significantly lower than the control. Expressions of three auxin transporter genes, PIN1, PIN3, and PIN7, in wild-type plants were upregulated by near-null magnetic field. Transcript levels of transcriptional repressor genes, IAA1, IAA5, IAA6, IAA16, and IAA19, were significantly higher in wild-type plants in near-null magnetic field than in control plants. However, IAA level and expressions of all the detected genes in cry1/cry2 mutants in near-null magnetic field were similar to controls. Our results suggest that near-null magnetic field affects the distribution of auxin in Arabidopsis by transcriptional upregulation of auxin transporter genes, and that change in distribution of auxin and increased expressions of transcriptional repressor genes result in delay of flowering in Arabidopsis in near-null magnetic field, which are mediated by cryptochrome. Bioelectromagnetics. 39:15-24, 2018.

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Section: Introductionmentioning

confidence: 99%

Suppression of Arabidopsis flowering by near‐null magnetic field is mediated by auxin

Zhang

et al. 2017

Bioelectromagnetics

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“…All floral organs arise from a floral meristem which, unlike the shoot or root meristem, terminates its stem cell activity once all floral organs are formed. We provide here a short introduction into flower meristem formation, activity, and termination and point to other recent reviews which provide more comprehensive insights into these mechanisms (Holt et al 2014;Lifschitz et al 2014;Chandler 2012).…”

Section: Flower Meristem Dynamics-a Primermentioning

confidence: 99%

“…The complexity of the regulatory network may be even higher, as a large number of TFs interact in a small tissue zone and only a few of them have been investigated so far with respect to their PD transport capacities. Thus, the overall concept of the role of PD transport in floral organ development remains rudimentary and needs more attention, while enormous progress has been made in the past years in understanding the noncell autonomous control mechanisms regulating flower induction or floral meristem formation, maintenance, and termination (Han et al 2014;Holt et al 2014;Vaddepalli et al 2015).…”

Section: Transport Of Floral Homeotic Proteins During Floral Organ Fomentioning

confidence: 99%

Arabidopsis flower development—of protein complexes, targets, and transport

Becker

Ehlers

2015

Protoplasma

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Tremendous progress has been achieved over the past 25 years or more of research on the molecular mechanisms of floral organ identity, patterning, and development. While collections of floral homeotic mutants of Antirrhinum majus laid the foundation already at the beginning of the previous century, it was the genetic analysis of these mutants in A. majus and Arabidopsis thaliana that led to the development of the ABC model of floral organ identity more than 20 years ago. This intuitive model kick-started research focused on the genetic mechanisms regulating flower development, using mainly A. thaliana as a model plant. In recent years, interactions among floral homeotic proteins have been elucidated, and their direct and indirect target genes are known to a large extent. Here, we provide an overview over the advances in understanding the molecular mechanism orchestrating A. thaliana flower development. We focus on floral homeotic protein complexes, their target genes, evidence for their transport in floral primordia, and how these new results advance our view on the processes downstream of floral organ identity, such as organ boundary formation or floral organ patterning.

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“…The expression of ARR7 and ARR15 is regulated by auxin via activation of AUXIN RESPONSE FACTOR5/MONOPTEROS (Leibfried et al, 2005; Zhao et al, 2010). The expression of ARRs and WUS is positively regulated by cytokinin ( Figure 1 ) (Holt et al, 2014). These observations suggest that type A response regulators regulate differentiation–dedifferentiation of plant cells mediated by WUS, auxin and cytokinin.…”

Section: Wus Maintains Stem Cell Populationsmentioning

confidence: 99%

TCPs, WUSs, and WINDs: families of transcription factors that regulate shoot meristem formation, stem cell maintenance, and somatic cell differentiation

Ikeda¹,

Ohme‐Takagi

2014

Front. Plant Sci.

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In contrast to somatic mammalian cells, which cannot alter their fate, plant cells can dedifferentiate to form totipotent callus cells and regenerate a whole plant, following treatment with specific phytohormones. However, the regulatory mechanisms and key factors that control differentiation-dedifferentiation and cell totipotency have not been completely clarified in plants. Recently, several plant transcription factors that regulate meristem formation and dedifferentiation have been identified and include members of the TEOSINTE BRANCHED1/CYCLOIDEA/PROLIFERATING CELL FACTOR (TCP), WUSCHEL (WUS), and WOUND INDUCED DEDIFFERENTIATION (WIND1) families. WUS and WIND positively control plant cell totipotency, while TCP negatively controls it. Interestingly, TCP is a transcriptional activator that acts as a negative regulator of shoot meristem formation, and WUS is a transcriptional repressor that positively maintains totipotency of the stem cells of the shoot meristem. We describe here the functions of TCP, WUS, and WIND transcription factors in the regulation of differentiation-dedifferentiation by positive and negative transcriptional regulators.

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Signaling in shoot and flower meristems of Arabidopsis thaliana

Cited by 42 publications

References 49 publications

Suppression of Arabidopsis flowering by near‐null magnetic field is mediated by auxin

Suppression of Arabidopsis flowering by near‐null magnetic field is mediated by auxin

Arabidopsis flower development—of protein complexes, targets, and transport

TCPs, WUSs, and WINDs: families of transcription factors that regulate shoot meristem formation, stem cell maintenance, and somatic cell differentiation

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