The Solanum lycopersicum auxin response factor SlARF2 participates in regulating lateral root formation and flower organ senescence

Ren, Zhen; Liu, Ruiyuan; Gu, Wentao; Dong, Xiaoyan

doi:10.1016/j.plantsci.2016.12.008

Cited by 57 publications

(46 citation statements)

References 61 publications

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“…Exogenous auxin application at specific developmental stages led to elongated pearshaped fruits in WT NIL In addition to many roles, auxin is known to influence fruit shape (Wang et al 2005, Goetz et al 2007, De Jong et al 2009, Damodharan et al 2016, Ren et al 2017. To determine the developmental aspects of auxin-induced fruit shape changes, 2,4-D was applied to WT NIL.…”

Section: Resultsmentioning

confidence: 99%

“…It is also important to keep in mind that although exogenous auxin led to pear-shaped fruits in LA1589, changes of auxin level or signaling do not always lead to this particular shape. For example, overexpression of SlARF2 (Solyc03g118290) in Micro-Tom (round fruit) resulted in obovoid (top heavy) fruits with elongated and restricted distal ends (De Jong et al 2009); downregulation of SlARF7 (Solyc07g042260) in Moneymaker (flat fruit) and overexpression of a Sl-miR160a-resistant version of SlARF10 (mSlARF10, Solyc11g069500) in MP1 (round fruit) all led to parthenocarpic and heart-shaped fruits (Hendelman et al 2012, Ren et al 2017; in this study, applying 2,4-D to the WT NIL in Sun1642 background changed the fruits from round into rectangular shape ( Supplementary Fig. S1B).…”

Section: Discussionmentioning

confidence: 99%

“…In Arabidopsis, an intricate auxin transport model is proposed for gynoecium development and fruit formation (Nemhauser et al 2000, Sohlberg et al 2006, Ståldal et al 2008, Larsson et al 2014. Additionally, mutations and transgenic manipulation of specific auxin signaling components such as ARF and Aux/IAA genes, lead to the development of parthenocarpic and abnormally shaped fruit in both tomato and Arabidopsis (Wang et al 2005, Goetz et al 2007, De Jong et al 2009, Damodharan et al 2016, Ren et al 2017. With regard to the tomato fruit shape genes, SUN overexpressor lines feature parthenocarpic fruits, increase of serration at the leaflet margins as well as twisted leaf rachises (Wu et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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A Comparison of sun, ovate, fs8.1 and Auxin Application on Tomato Fruit Shape and Gene Expression

Wang

Clevenger

Illa-Berenguer

et al. 2019

Plant and Cell Physiology

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Elongated tomato fruit shape is the result of the action of the fruit shape genes possibly in coordination with the phytohormone auxin. To investigate the possible link between auxin and the fruit shape genes, a series of auxin (2,4-D) treatments were performed on the wild-type and the fruit shape nearisogenic lines (NILs) in Solanum pimpinellifolium accession LA1589 background. Morphological and histological analyses indicated that auxin application approximately 3 weeks before anthesis led to elongated pear-shaped ovaries and fruits, which was mainly attributed to the increase of ovary/ fruit proximal end caused by the increase of both cell number and cell size. Fruit shape changes caused by SUN, OVATE and fs8.1 were primarily due to the alterations of cell number along different growth axes. Particularly, SUN caused elongation by extending cell number along the entire proximaldistal axis, whereas OVATE caused fruit elongation in the proximal area, which was most similar to the effect of auxin on ovary shape. Expression analysis of flower buds at different stages in fruit shape NILs indicated that SUN had a stronger impact on the transcriptome than OVATE and fs8.1. The sun NIL differentially expressed genes were enriched in several biological processes, such as lipid metabolism, ion transmembrane and actin cytoskeleton organization. Additionally, SUN also shifted the expression of the auxinrelated genes, including those involved in auxin biosynthesis, homeostasis, signal transduction and polar transport, indicating that SUN may regulate ovary/fruit shape through modifying the expression of auxin-related genes very early during the formation of the ovary in the developing flower.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Comparison of sun, ovate, fs8.1 and Auxin Application on Tomato Fruit Shape and Gene Expression

Wang

Clevenger

Illa-Berenguer

et al. 2019

Plant and Cell Physiology

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“…ARF genes have been reported to be involved in plant organ abscission. Overexpression of SlARF2 in tomato results in flower organ senescence (Ren et al, 2017) and SlARF1,2,7,11 and 19 showed overlapping functions in tomato abscission (Guan et al, 2014). Similar roles of ARFs in abscission were observed in Arabidopsis (Ellis et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Peer Review #3 of "Genome-wide characterization of the auxin response factor (ARF) gene family of litchi (Litchi chinensis Sonn.): phylogenetic analysis, miRNA regulation and expression changes during fruit abscission (v0.1)"

Ha¹

2019

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Auxin response factors (ARFs) play fundamental roles in modulating various biological processes including fruit development and abscission via regulating the expression of auxin response genes. Currently, little is known about roles of ARFs in litchi (Litchi chinensis Sonn.), an economical important subtropical fruit tree whose production is suffering from fruit abscission. In this study, a genome-wide analysis of ARFs was conducted for litchi, thirty-nine ARF genes (LcARFs) were identified. Conserved domain analysis showed that all the LcARFs identified have the signature B3 DNA-binding (B3) and ARF (Aux_rep) domains, with only 23 members having the dimerization domain (Aux_IAA). Number of exons in LcARF genes ranges from 2 to 16, suggesting a large variation for the gene structure of LcARFs. Phylogenetic analysis showed that the 39 LcARFs could be divided into three main groups: class I, II, III. Totally, twenty-three LcARFs were found to be potential targets of small RNAs, with three conserved and one novel miRNA-ARF (miRN43-ARF9) regulatory pathways discovered in litchi. Expression patterns were used to evaluate candidate LcARFs involved in various developmental processes, especially in flower formation and organ abscission. The results revealed that most ARF genes likely acted as repressors in litchi fruit abscission, i.e. ARF2D/2E, 7A/7B, 9A/9B, 16A/16B, while a few LcARFs, such as LcARF5A/B, might positively involve in this process. These findings provide useful information and resources for further studies on the roles of ARF genes in litchi growth and development, especially in the process of fruit abscission.

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“…The ARF family proteins have an N-terminal B3 domain that recognizes the auxin response element TGTCTC in the promoter of gene responsive to auxin, followed by a highly divergent middle region that determines whether the ARFs acts as an activator or repressor, and end with a conserved carboxyl-terminal interaction domain containing motifs III and IV [25,26]. ARF genes have been widely implicated in auxin-mediated response during various developmental processes from embryogenesis to flowering, and fruit development [27][28][29][30][31][32][33]. The REM family members contain at least one copy of B3 domain, sometimes up to seven repeats.…”

Section: Introductionmentioning

confidence: 99%

Genome-wide analysis of the citrus B3 superfamily and their association with somatic embryogenesis

Liu

Wu³

et al. 2019

Preprint

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The Solanum lycopersicum auxin response factor SlARF2 participates in regulating lateral root formation and flower organ senescence

Cited by 57 publications

References 61 publications

A Comparison of sun, ovate, fs8.1 and Auxin Application on Tomato Fruit Shape and Gene Expression

A Comparison of sun, ovate, fs8.1 and Auxin Application on Tomato Fruit Shape and Gene Expression

Peer Review #3 of "Genome-wide characterization of the auxin response factor (ARF) gene family of litchi (Litchi chinensis Sonn.): phylogenetic analysis, miRNA regulation and expression changes during fruit abscission (v0.1)"

Genome-wide analysis of the citrus B3 superfamily and their association with somatic embryogenesis

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