Transcription Factor AREB2 Is Involved in Soluble Sugar Accumulation by Activating Sugar Transporter and Amylase Genes

Ma, Qi-Jun; Sun, Ming; Lü, Jing; Liu, Ya‐Jing; D, Hu; Hao, Yu‐Jin

doi:10.1104/pp.17.00502

Cited by 150 publications

(124 citation statements)

References 63 publications

(76 reference statements)

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“…Previous study has demonstrated that ABA is involved in the sugar accumulation and fruit ripening (Jia et al, ; Ma et al, ). In this study, we found that ABA plays a positive role in regulating anthocyanin accumulation and fruit coloration.…”

Section: Discussionmentioning

confidence: 99%

Apple bZIP transcription factor MdbZIP44 regulates abscisic acid‐promoted anthocyanin accumulation

Yao

et al. 2018

Plant Cell & Environment

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Phytohormone abscisic acid (ABA) induces anthocyanin biosynthesis; however, the underlying molecular mechanism is less known. In this study, we found that the apple MYB transcription factor MdMYB1 activated anthocyanin biosynthesis in response to ABA. Using a yeast screening technique, we isolated MdbZIP44, an ABA-induced bZIP transcription factor in apple, as a co-partner with MdMYB1. MdbZIP44 promoted anthocyanin accumulation in response to ABA by enhancing the binding of MdMYB1 to the promoters of downstream target genes. Furthermore, we identified MdBT2, a BTB protein, as an MdbZIP44-interacting protein. A series of molecular, biochemical, and genetic analysis suggested that MdBT2 degraded MdbZIP44 protein through the Ubiquitin-26S proteasome system, thus inhibiting MdbZIP44-modulated anthocyanin biosynthesis. Taken together, we reveal a novel working mechanism of MdbZIP44-mediated anthocyanin biosynthesis in response to ABA.

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Section: Discussionmentioning

confidence: 99%

Apple bZIP transcription factor MdbZIP44 regulates abscisic acid‐promoted anthocyanin accumulation

Yao

et al. 2018

Plant Cell & Environment

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195

169

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“…Previous studies of apple have demonstrated that drought stress and ABA contributed to soluble sugar accumulation through the activation of sugar transporter and amylase genes by the ABA-responsive transcription factor, AREB2 (Ma et al 2017). Similarly, both drought stress and exogenous ABA induce an increase in soluble sugar accumulation in peach fruit (Kobashi et al 2000; Kobashi et al 2001).…”

Section: Resultsmentioning

confidence: 99%

Genomic analyses provide insights into peach local adaptation and responses to climate change

Cao

et al. 2020

Preprint

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31 32 33 2 The environment has constantly shaped plant genomes, but the genetic bases underlying 34 how plants adapt to environmental influences remain largely unknown. We constructed a 35 high-density genomic variation map by re-sequencing genomes of 263 geographically 36 representative peach landraces and wild relatives. A combination of whole-genome 37 selection scans and genome-wide environmental association studies (GWEAS) was 38 performed to reveal the genomic bases of peach local adaptation to diverse climates 39 comprehensively. A total of 2,092 selective sweeps that underlie local adaptation to both 40 mild and extreme climates were identified, including 339 sweeps conferring genomic 41 pattern of adaptation to high altitudes. Using GWEAS, a total of 3,496 genomic loci strongly 42 associated with 51 specific environmental variables were detected. The molecular 43 mechanism underlying adaptive evolution of high drought, strong UV-B, cold hardiness, 44 sugar content, flesh color, and bloom date were revealed. Finally, based on 30 years of 45 observation, a candidate gene associated with bloom date advance, representing peach 46 responses to global warming, was identified. Collectively, our study provides insights into 47 molecular bases of how environments have shaped peach genomes by natural selection 48 and adds valuable genome resources and candidate genes for future studies on 49 evolutionary genetics, adaptation to climate changes, and future breeding.50 51 Environmental adaptation is fundamental to species survival and conservation of biodiversity, 52 especially under threats of climate change (Blanquart et al. 2013). Unlike animals, which can 53 escape from hostile environments, plants are sessile and have to adapt by shaping and/or fixing 54 genetic variants that are conducive for survival. Generally, climate is the major selective pressure 55 driving adaptive evolution, resulting in different ecotypes within a single species (Hancock et al. 56 2011; Fournier-Level et al. 2011). However, the mechanisms underlying how climate shapes plant 57 genomes remain largely unclear. Recently, identifying adaptive variants and understanding 58 molecular mechanism of adaptation across a genome have become tractable due to the advances 59 of sequencing technologies. Recent studies have sought to elucidate genetic bases of adaptation 60 through genome-wide identification of regions under positive selection and/or loci that control 61 adaptive traits in Arabidopsis thaliana (Fournier-Level et al. 2011), rice (Yan et al. 2013), sorghum 62 (Lasky et al. 2015), and poplar (Wang et al. 2018). However, no study has focused on genetic 63 bases of adaptation in domesticated perennial fruit crops. Domesticated crops have adapted to 64 diverse climates during domestication and subsequent spread, and show local adaptation through 65 long-term natural selection. Landraces and wild relatives harbor great genetic diversity and an 66abundance of resistance genes, which provide excellent resources for breeding initiatives. This ...

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“…Callus tissues have an advantage of vigorous growth and can be easily collected without season and space limitation. Callus transformation system has been proven to be a rapid and efficient approach to assess gene function in fruit trees such as apple [46][47][48][49] and citrus 50 . In peach, callus tissues induced from various explants such as leaf, stem and calyx have been reported, but there is no report on establishment of callus transformation system.…”

Section: Discussionmentioning

confidence: 99%

Development of a fast and efficient root transgenic system for functional genomics and genetic engineering in peach

Lai

Zhao

et al. 2020

Sci Rep

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Peach is an economically import fruit crop worldwide, and serves as a model species of the Rosaceae family as well. However, peach functional genomics studies are severely hampered due to its recalcitrance to regeneration and stable transformation. Here, we report a fast and efficient Agrobacterium rhizogenes-mediated transformation system in peach. Various explants, including leaf, hypocotyl and shoot, were all able to induce transgenic hairy roots, with a transformation efficiency of over 50% for hypocotyl. Composite plants were generated by infecting shoots with A. rhizogenes to induce transgenic adventitious hairy roots. The composite plant system was successfully used to validate function of an anthocyanin-related regulatory gene PpMYB10.1 in transgenic hairy roots, and two downstream genes, PpUFGT and PpGST, were strongly activated. Our stable and reproductive A. rhizogenes-mediated transformation system provides an avenue for gene function assay, genetic engineering, and investigation of root-rhizosphere microorganism interaction in peach. open Scientific RepoRtS | (2020) 10:2836 | https://doi.

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Transcription Factor AREB2 Is Involved in Soluble Sugar Accumulation by Activating Sugar Transporter and Amylase Genes

Cited by 150 publications

References 63 publications

Apple bZIP transcription factor MdbZIP44 regulates abscisic acid‐promoted anthocyanin accumulation

Apple bZIP transcription factor MdbZIP44 regulates abscisic acid‐promoted anthocyanin accumulation

Genomic analyses provide insights into peach local adaptation and responses to climate change

Development of a fast and efficient root transgenic system for functional genomics and genetic engineering in peach

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