The <i>Solanum lycopersicum</i> auxin response factor 7 (<i>Sl</i>ARF7) regulates auxin signaling during tomato fruit set and development

Jong, Maaike de; Wolters‐Arts, Mieke; Feron, Richard; Mariani, Celestina; Vriezen, Wim H.

doi:10.1111/j.1365-313x.2008.03671.x

Cited by 310 publications

(246 citation statements)

References 60 publications

Supporting

Mentioning

213

Contrasting

Unclassified

Order By: Relevance

“…Therefore, auxin, via GA, or both hormones together regulate LeNCED1 gene expression, whereas SlCYP707A1 expression seems to be regulated by auxin alone. This would be consistent with auxin inducing GA biosynthesis, but not vice versa (Vriezen et al 2008;de Jong et al 2009). It seems likely that a pollination-induced auxin increase precedes the GA increase, as summarized in Fig.…”

Section: Hormone Crosstalksupporting

confidence: 75%

Abscisic acid levels in tomato ovaries are regulated by LeNCED1 and SlCYP707A1

Nitsch

Oplaat

Feron

et al. 2009

Planta

Self Cite

View full text Add to dashboard Cite

Although the hormones, gibberellin and auxin, are known to play a role in the initiation of fruits, no such function has yet been demonstrated for abscisic acid (ABA). However, ABA signaling and ABA responses are high in tomato (Solanum lycopersicum L.) ovaries before pollination and decrease thereafter (Vriezen et al. in New Phytol 177:60-76, 2008). As a Wrst step to understanding the role of ABA in ovary development and fruit set in tomato, we analyzed ABA content and the expression of genes involved in its metabolism in relation to pollination. We show that ABA levels are relatively high in mature ovaries and decrease directly after pollination, while an increase in the ABA metabolite dihydrophaseic acid was measured. An important regulator of ABA biosynthesis in tomato is 9-cis-epoxy-carotenoid dioxygenase (LeNCED1), whose mRNA level in ovaries is reduced after pollination. The increased catabolism is likely caused by strong induction of one of four newly identiWed putative (+)ABA 8Ј-hydroxylase genes. This gene was named SlCYP707A1 and is expressed speciWcally in ovules and placenta. Transgenic plants, overexpressing SlCYP707A1, have reduced ABA levels and exhibit ABA-deWcient phenotypes suggesting that this gene encodes a functional ABA 8Ј-hydroxylase. Gibberellin and auxin application have diVerent eVects on the LeNCED1 and SlCYP707A1 gene expression. The crosstalk between auxins, gibberellins and ABA during fruit set is discussed.

show abstract

Section: Hormone Crosstalksupporting

confidence: 75%

Abscisic acid levels in tomato ovaries are regulated by LeNCED1 and SlCYP707A1

Nitsch

Oplaat

Feron

et al. 2009

Planta

Self Cite

View full text Add to dashboard Cite

show abstract

“…This analysis includes two auxin-responsive genes (IAA9 and ARF7) and two FZY genes (ToFZY1 and ToFZY6). IAA9 and ARF7 are transcription factors negatively regulating the auxin response and signaling during tomato fruit set (Wang et al, 2005;De Jong et al, 2009), whereas the two tomato FZY genes are YUCCA-like genes encoding flavin monooxygenases, which are rate-limiting enzymes in the synthesis of indole-3-acetic acid (IAA; Expósito-Rodríguez et al, 2011). The analyses revealed a significantly lower level of IAA9 mRNA in transgenic tomato than that in the wild type in 2-dbp ovaries and 2-dap fruits under both control and LMHS conditions (Fig.…”

Section: Cwin-elevated Transgenic Tomato Exhibited a Sustained Or Incmentioning

confidence: 99%

Cell Wall Invertase Promotes Fruit Set under Heat Stress by Suppressing ROS-Independent Cell Death

2016

View full text Add to dashboard Cite

Reduced cell wall invertase (CWIN) activity has been shown to be associated with poor seed and fruit set under abiotic stress. Here, we examined whether genetically increasing native CWIN activity would sustain fruit set under long-term moderate heat stress (LMHS), an important factor limiting crop production, by using transgenic tomato (Solanum lycopersicum) with its CWIN inhibitor gene silenced and focusing on ovaries and fruits at 2 d before and after pollination, respectively. We found that the increase of CWIN activity suppressed LMHS-induced programmed cell death in fruits. Surprisingly, measurement of the contents of H 2 O 2 and malondialdehyde and the activities of a cohort of antioxidant enzymes revealed that the CWINmediated inhibition on programmed cell death is exerted in a reactive oxygen species-independent manner. Elevation of CWIN activity sustained Suc import into fruits and increased activities of hexokinase and fructokinase in the ovaries in response to LMHS. Compared to the wild type, the CWIN-elevated transgenic plants exhibited higher transcript levels of heat shock protein genes Hsp90 and Hsp100 in ovaries and HspII17.6 in fruits under LMHS, which corresponded to a lower transcript level of a negative auxin responsive factor IAA9 but a higher expression of the auxin biosynthesis gene ToFZY6 in fruits at 2 d after pollination. Collectively, the data indicate that CWIN enhances fruit set under LMHS through suppression of programmed cell death in a reactive oxygen species-independent manner that could involve enhanced Suc import and catabolism, HSP expression, and auxin response and biosynthesis.

show abstract

“…In particular, auxin plays a major key role in the regulation of fruit set and growth (Wang et al, 2005;Goetz et al, 2007;de Jong et al, 2009), and there is increasing evidence of strict spatiotemporal control of auxin distribution and signaling during reproductive development in Arabidopsis (Arabidopsis thaliana; Fuentes and Vivian-Smith, 2009;Sundberg and Østergaard, 2009) and in tomato (Pattison et al, 2014). However, a comprehensive picture of tissue-specific, auxin-related gene expression to inform models of auxin action in fruit is currently lacking.…”

mentioning

confidence: 99%

Comprehensive Tissue-Specific Transcriptome Analysis Reveals Distinct Regulatory Programs during Early Tomato Fruit Development

Pattison

Csukasi²,

Zheng³

et al. 2015

Plant Physiol.

131

142

View full text Add to dashboard Cite

Fruit formation and early development involve a range of physiological and morphological transformations of the various constituent tissues of the ovary. These developmental changes vary considerably according to tissue type, but molecular analyses at an organ-wide level inevitably obscure many tissue-specific phenomena. We used laser-capture microdissection coupled to high-throughput RNA sequencing to analyze the transcriptome of ovaries and fruit tissues of the wild tomato species Solanum pimpinellifolium. This laser-capture microdissection-high-throughput RNA sequencing approach allowed quantitative global profiling of gene expression at previously unobtainable levels of spatial resolution, revealing numerous contrasting transcriptome profiles and uncovering rare and cell type-specific transcripts. Coexpressed gene clusters linked specific tissues and stages to major transcriptional changes underlying the ovary-to-fruit transition and provided evidence of regulatory modules related to cell division, photosynthesis, and auxin transport in internal fruit tissues, together with parallel specialization of the pericarp transcriptome in stress responses and secondary metabolism. Analysis of transcription factor expression and regulatory motifs indicated putative gene regulatory modules that may regulate the development of different tissues and hormonal processes. Major alterations in the expression of hormone metabolic and signaling components illustrate the complex hormonal control underpinning fruit formation, with intricate spatiotemporal variations suggesting separate regulatory programs.

show abstract

The Solanum lycopersicum auxin response factor 7 (SlARF7) regulates auxin signaling during tomato fruit set and development

Cited by 310 publications

References 60 publications

Abscisic acid levels in tomato ovaries are regulated by LeNCED1 and SlCYP707A1

Abscisic acid levels in tomato ovaries are regulated by LeNCED1 and SlCYP707A1

Cell Wall Invertase Promotes Fruit Set under Heat Stress by Suppressing ROS-Independent Cell Death

Comprehensive Tissue-Specific Transcriptome Analysis Reveals Distinct Regulatory Programs during Early Tomato Fruit Development

Contact Info

Product

Resources

About