Arabidopsis 14-3-3 epsilon members contribute to polarity of PIN auxin carrier and auxin transport-related development

Keicher, Jutta; Jaspert, Nina; Weckermann, Katrin; Möller, Claudia; Throm, Christian; Kintzi, Aaron; Oecking, Claudia

doi:10.7554/elife.24336

Cited by 49 publications

(50 citation statements)

References 67 publications

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“…Accumulated evidences have revealed the important functions of 14–3–3 proteins in plant growth and development [ 20 , 21 , 22 , 23 , 24 , 25 ]. Investigation of the tissue expression patterns of 14–3–3 proteins would provide some clues on tissue development.…”

Section: Discussionmentioning

confidence: 99%

“…Further studies demonstrated that GRF proteins played a crucial role in the regulation of plant growth and development in various species. Interference of ε group 14–3–3 genes altered auxin distribution and led to agravitropic growth in Arabidopsis [ 20 ]. Multiple mutant analyses revealed the regulatory role of 14–3–3 proteins in chloroplast division, root growth, leaf longevity, and photosynthesis [ 21 , 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

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Genome-Wide Analysis of the GRF Family Reveals Their Involvement in Abiotic Stress Response in Cassava

Shang

Huang

et al. 2018

Genes

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GENERAL REGULATORY FACTOR (GRF) proteins play vital roles in the regulation of plant growth, development, and response to abiotic stress. However, little information is known for this gene family in cassava (Manihot esculenta). In this study, 15 MeGRFs were identified from the cassava genome and were clustered into the ε and the non-ε groups according to phylogenetic, conserved motif, and gene structure analyses. Transcriptomic analyses showed eleven MeGRFs with constitutively high expression in stems, leaves, and storage roots of two cassava genotypes. Expression analyses revealed that the majority of GRFs showed transcriptional changes under cold, osmotic, salt, abscisic acid (ABA), and H2O2 treatments. Six MeGRFs were found to be commonly upregulated by abiotic stress, ABA, and H2O2 treatments, which may be the converging points of multiple signaling pathways. Interaction network analysis identified 18 possible interactors of MeGRFs. Taken together, this study elucidates the transcriptional control of MeGRFs in tissue development and the responses of abiotic stress and related signaling in cassava. Some constitutively expressed, tissue-specific, and abiotic stress-responsive candidate MeGRF genes were identified for the further genetic improvement of crops.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genome-Wide Analysis of the GRF Family Reveals Their Involvement in Abiotic Stress Response in Cassava

Shang

Huang

et al. 2018

Genes

View full text Add to dashboard Cite

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“…In addition to sphingolipid, the balanced sterol composition mediated by sterol methyltransferase 1 (SMT1) also contributes to the polarity of PINs [ 129 ]. A recent report pointed out that 14-3-3 epsilon members regulated the polar trafficking of PIN proteins and the recycling processes via endocytosis [ 130 ]. More recently, FORKED 1 (FKD1) together with FORKED LIKE 2 (FL2) and FL3 function redundantly to regulate PIN1 asymmetric localization by affecting its secretory pathway in developing veins [ 131 ].…”

Section: Regulation Of Pin Proteins At Multiple Levelsmentioning

confidence: 99%

The PIN-FORMED Auxin Efflux Carriers in Plants

Zhou

Luo

2018

IJMS

123

118

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Auxin plays crucial roles in multiple developmental processes, such as embryogenesis, organogenesis, cell determination and division, as well as tropic responses. These processes are finely coordinated by the auxin, which requires the polar distribution of auxin within tissues and cells. The intercellular directionality of auxin flow is closely related to the asymmetric subcellular location of PIN-FORMED (PIN) auxin efflux transporters. All PIN proteins have a conserved structure with a central hydrophilic loop domain, which harbors several phosphosites targeted by a set of protein kinases. The activities of PIN proteins are finely regulated by diverse endogenous and exogenous stimuli at multiple layers—including transcriptional and epigenetic levels, post-transcriptional modifications, subcellular trafficking, as well as PINs’ recycling and turnover—to facilitate the developmental processes in an auxin gradient-dependent manner. Here, the recent advances in the structure, evolution, regulation and functions of PIN proteins in plants will be discussed. The information provided by this review will shed new light on the asymmetric auxin-distribution-dependent development processes mediated by PIN transporters in plants.

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“…The PIN family proteins facilitate auxin efflux from the cytoplasm to the apoplast (Adamowski and Friml, 2015; Blilou et al , 2005; Friml, 2010; Keicher et al , 2017; Prat et al , 2018; Ren and Lin, 2015). PIN family has a total of 8 members.…”

Section: Introductionmentioning

confidence: 99%

Arabidopsis ERF109 regulates auxin transport-related genes in root development

Cai

Zhao

et al. 2019

Preprint

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The transcription factor ERF109 acts as a crosstalk node between jasmonic acid signaling and auxin biosynthesis by directly regulating YUC2 and ASA1 during lateral root formation in Arabidopsis. However, whether ERF109 regulates the auxin transport remains unclear. Here we report a mechanism of ERF109-mediated auxin transport in root system. Through root transcriptome comparison between erf109, wild type, and 35S:ERF109, we found that the genes PIN2 and PIN4, encoding the major membrane-based efflux carriers of auxin, were enriched in the overexpression line. In the promoters of these auxin transport genes, GCC-box cis elements were found and potentially bound by ERF109. Moreover, PID, encoding a key regulator in polar auxin transport, was found upregulated in 35S:ERF109 and down regulated in erf109. Yeast-one-hybrid and chromatin immunoprecipitation assays showed that ERF109 directly bound to the GCC-box of PIN2, PIN4, and PID. Genetic analyses with double mutants confirmed the function of ERF109 in the regulation of auxin transport in Arabidopsis roots. Taken together, our results show that ERF109 modulates auxin transport by directly regulating PIN2, PIN4 and PID. This ERF109-mediated auxin transport likely works together with ERF109-mediated auxin synthesis to establish auxin maxima for lateral root initiation.

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Arabidopsis 14-3-3 epsilon members contribute to polarity of PIN auxin carrier and auxin transport-related development

Cited by 49 publications

References 67 publications

Genome-Wide Analysis of the GRF Family Reveals Their Involvement in Abiotic Stress Response in Cassava

Genome-Wide Analysis of the GRF Family Reveals Their Involvement in Abiotic Stress Response in Cassava

The PIN-FORMED Auxin Efflux Carriers in Plants

Arabidopsis ERF109 regulates auxin transport-related genes in root development

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