ABSCISIC ACID-INSENSITIVE 4 negatively regulates flowering through directly promoting Arabidopsis<i>FLOWERING LOCUS C</i>transcription

Shu, Kai; Qian, Chen; Wu, Yaorong; Liu, Ruijun; Zhang, Huawei; Wang, Shengfu; Tang, Sanyuan; Yang, Wenyu; Xie, Qi

doi:10.1093/jxb/erv459

Cited by 115 publications

(96 citation statements)

References 62 publications

(124 reference statements)

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“…6B), a transcriptional repressor of SOC1 which contributes to delaying flowering under drought condition (Riboni et al , 2013; Y. Wang et al , 2013; Shu et al , 2016). Since SOC1 integrates different floral pathways in the SAM (Moon et al , 2003; Wang et al , 2009; Song et al , 2012, 2014) which promote flowering under SDs we created the abi1-1 soc1-1 double mutants.…”

Section: Resultsmentioning

confidence: 99%

“…The negative role of ABA in flowering has been linked to the direct activation of FLC by ABA-stimulated bZIP transcriptional factor ABSCISIC ACID-INSENSITIVE 5 ( ABI5 ) and AP2/ERF domain-containing transcription factor ABSCISIC ACID-INSENSITIVE 4 ( ABI4 ) (Y. Wang et al , 2013; Shu et al , 2016). Such activation of FLC may account for the general reduction in FT transcript accumulation following exogenous ABA applications on leaves (Hoth et al , 2002).…”

Section: Discussionmentioning

confidence: 99%

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ABA-dependent control ofGIGANTEAsignalling enables drought escape via up-regulation ofFLOWERING LOCUS TinArabidopsis thaliana

Riboni

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Galbiati

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

ABA-dependent control ofGIGANTEAsignalling enables drought escape via up-regulation ofFLOWERING LOCUS TinArabidopsis thaliana

Riboni

Test

Galbiati

et al. 2016

EXBOTJ

149

146

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show abstract

“…This suggests that ANAC017 operates in concert with other factors that define its specificity and have not yet been identified. ABI4 further regulates plant developmental processes, such as seed germination (Finkelstein et al, 1998), flower development (Foyer et al, 2012;Shu et al, 2016), and lateral root formation (Shkolnik-Inbar and Bar-Zvi, 2010). It remains unclear if and how those programs are linked or even integrated with retrograde regulation.…”

Section: Proteins Regulating Nuclear Transcription In Mitochondrial Smentioning

confidence: 99%

Mitochondrial Energy Signaling and Its Role in the Low-Oxygen Stress Response of Plants

et al. 2018

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ORCID IDs: 0000-0001-5369-7911 (S.W.); 0000-0003-4024-968X (O.V.A.); 0000-0003-0796-8308 (M.S.).Cells of complex organisms typically rely on mitochondria for energy provision. The amount of energy required to sustain cellular activity can vary strongly depending on external conditions. Vice versa, constraints on respiratory activity due to metabolic status or stress insult require mitochondrial signaling to coordinate cellular physiology with the function of the organelle. In this update, we review recent insights into plant mitochondrial energy signaling in the light of their significance to stress acclimation. First, we focus on the characteristic adjustments of the nuclear transcriptome that occur after pharmacological inhibition of the mitochondrial electron transport chain as the output of mitochondrial retrograde signaling. Second, we discuss the proteins that have recently been identified as regulators of the transcript responses and the emerging picture of their action as a signaling network. We then pose the question of how well our current models of inducing mitochondrial dysfunction relate to conditions that plants face naturally. We reason that low-oxygen stress shows striking similarities with electron transport inhibitors with respect to their impact on mitochondrial energy physiology upstream, as well as the cellular transcriptomic response. Finally, we highlight and discuss changes in mitochondrial physiology that are common to both stimuli as candidates for upstream signals. The aim of this update is to better define the physiological context in which mitochondrial signaling operates to provide new directions for future research. RESPONSES TO MITOCHONDRIAL ENERGY SIGNALING AT THE TRANSCRIPT LEVEL

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“…However, the molecular mechanisms underlying ABA/GA antagonism are not completely elucidated. In Arabidopsis, the AP2/ERF transcription factor ABA-INSENSITIVE 4 (ABI4) is a central factor in GA/ABA homeostasis [35,36]. Also, reactive oxygen species and ascorbic acid were reported to mediate this antagonism during seed germination in rice [37].…”

Section: Introductionmentioning

confidence: 99%

StCDPK3 Phosphorylates In Vitro Two Transcription Factors Involved in GA and ABA Signaling in Potato: StRSG1 and StABF1

et al. 2016

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Calcium-dependent protein kinases, CDPKs, decode calcium (Ca2+) transients and initiate downstream responses in plants. In order to understand how CDPKs affect plant physiology, their specific target proteins must be identified. In tobacco, the bZIP transcription factor Repression of Shoot Growth (NtRSG) that modulates gibberellin (GA) content is a specific target of NtCDPK1. StCDPK3 from potato is homologous (88% identical) to NtCDPK1 even in its N-terminal variable domain. In this work, we observe that NtRSG is also phosphorylated by StCDPK3. The potato RSG family of transcription factors is composed of three members that share similar features. The closest homologue to NtRSG, which was named StRSG1, was amplified and sequenced. qRT-PCR data indicate that StRSG1 is mainly expressed in petioles, stems, lateral buds, and roots. In addition, GA treatment affected StRSG1 expression. StCDPK3 transcripts were detected in leaves, petioles, stolons, roots, and dormant tubers, and transcript levels were modified in response to GA. The recombinant StRSG1-GST protein was produced and tested as a substrate for StCDPK3 and StCDPK1. 6xHisStCDPK3 was able to phosphorylate the potato StRSG1 in a Ca2+-dependent way, while 6xHisStCDPK1 could not. StCDPK3 also interacts and phosphorylates the transcription factor StABF1 (ABRE binding factor 1) involved in ABA signaling, as shown by EMSA and phosphorylation assays. StABF1 transcripts were mainly detected in roots, stems, and stolons. Our data suggest that StCDPK3 could be involved in the cross-talk between ABA and GA signaling at the onset of tuber development.

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ABSCISIC ACID-INSENSITIVE 4 negatively regulates flowering through directly promoting ArabidopsisFLOWERING LOCUS Ctranscription

Abstract: Highlight FLC is the direct target of both of the transcription factors ABI4 and ABI5, and ABA inhibits floral transition by activating FLC transcription through ABI4.

Cited by 115 publications

References 62 publications

ABA-dependent control ofGIGANTEAsignalling enables drought escape via up-regulation ofFLOWERING LOCUS TinArabidopsis thaliana

ABA-dependent control ofGIGANTEAsignalling enables drought escape via up-regulation ofFLOWERING LOCUS TinArabidopsis thaliana

Mitochondrial Energy Signaling and Its Role in the Low-Oxygen Stress Response of Plants

StCDPK3 Phosphorylates In Vitro Two Transcription Factors Involved in GA and ABA Signaling in Potato: StRSG1 and StABF1

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