Functional characterisation of <i>MdMYB44</i> as a negative regulator in the response to cold and salt stress in apple calli

Wu, Ruigang; Wang, Yi; Wu, Ting; Xu, Xuefeng; Han, Zhenhai

doi:10.1080/14620316.2017.1373038

Cited by 14 publications

(7 citation statements)

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“…The identification of regulatory proteins, such as transcription factors related to fruit ripening or hormone signal transduction, will provide important clues about the regulatory mechanisms of strawberry fruit ripening and quality formation. MYB44 is an important transcription factor in various species, including Arabidopsis, apple ( Malus domestica ), and potato ( Solanum tuberosum L.) ( Jung et al , 2008 ; Persak and Pitzschke, 2013 ; Jaradat et al , 2013 ; Zhao et al ., 2016 b ; Wu et al , 2017 ; Zhou et al , 2017 ). Transgenic analysis showed that MYB44 regulates plant growth, stress resistance, and hormone signal transduction ( Jung et al , 2008 ; Jaradat et al , 2013 ; Shim et al , 2013 ; Persak and Pitzschke, 2014 ); however, the roles of MYB44 in fruit ripening have not been reported.…”

Section: Introductionmentioning

confidence: 99%

FaMYB44.2, a transcriptional repressor, negatively regulates sucrose accumulation in strawberry receptacles through interplay with FaMYB10

Wei

Mao

Jia

et al. 2018

Journal of Experimental Botany

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Section: Introductionmentioning

confidence: 99%

FaMYB44.2, a transcriptional repressor, negatively regulates sucrose accumulation in strawberry receptacles through interplay with FaMYB10

Wei

Mao

Jia

et al. 2018

Journal of Experimental Botany

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“…of SpERFs [8], MdNAC047 [3], MdMYB44 [54], and MdSIMYB1 [55] could signi cantly improve NaCl tolerance of transgenic plants. However, the key TFs responding to KCl stress had not been reported.…”

Section: Discussionmentioning

confidence: 97%

Comparative transcriptome analysis of NaCl and KCl stress response in Malus hupehensis Rehd. Provide insight into the regulation involved in Na+ and K+ homeostasis

Zheng

Tian

et al. 2021

Plant Physiology and Biochemistry

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Background: Apple is among the most widely cultivated perennial fruit crops worldwide. It is sensitive to salt stress, which seriously affects the growth and productivity of apple trees by destroying the homeostasis of Na + and K + . Previous studies focused on the molecular mechanism underlying NaCl stress. However, signaling transduction under KCl stress has not been thoroughly studied.Results: We comprehensively analyzed the salt tolerance of Malus hupehensis Rehd., which is a widely used rootstock in apple orchards, by using RNA-Seq. Roots and leaves were treated with NaCl and KCl.Based on mapping analyses, a total of 762 differentially expressed genes (DEGs) related to NaCl and KCl stress in the roots and leaves were identi ed. The Gene Ontology (GO) terms were enriched in ion transmembrane transporter and oxidoreductase activity under NaCl and KCl stress. The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways focused on the plant hormone signal transduction and mitogen-activated protein kinase signaling pathway. We also screened out 28 candidate genes from 762 DEGs and veri ed their expression by quantitative reverse transcription polymerase chain reaction (qRT-PCR). All of these enriched genes were closely related to NaCl and KCl stress and take part in mediating the Na + and K + homeostasis in M. hupehensis.Conclusions: This transcriptome analysis provides a valuable resource for elucidating the signaling pathway of NaCl and KCl stress and is a substantial genetic resource for discovering genes related to the NaCl and KCl stress response of M. hupehensis.

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“…In strawberry, FaMYB44.2 negatively regulates the accumulation of soluble sugar and malic acid content, and may be involved in regulating the production of aroma compounds (Wei et al ., ). MdMYB44 has also been shown to act as a negative regulator in response to cold and salt stress in apple calli (Wu et al ., ).…”

Section: Discussionmentioning

confidence: 97%

Genetic control of α‐farnesene production in apple fruit and its role in fungal pathogenesis

et al. 2019

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Terpenes are important compounds in plant trophic interactions. A meta-analysis of GC-MS data from a diverse range of apple (Malus 3 domestica) genotypes revealed that apple fruit produces a range of terpene volatiles, with the predominant terpene being the acyclic branched sesquiterpene (E,E)-a-farnesene. Four quantitative trait loci (QTLs) for a-farnesene production in ripe fruit were identified in a segregating 'Royal Gala' (RG) 3 'Granny Smith' (GS) population with one major QTL on linkage group 10 co-locating with the MdAFS1 (a-farnesene synthase-1) gene. Three of the four QTLs were derived from the GS parent, which was consistent with GC-MS analysis of headspace and solvent-extracted terpenes showing that cold-treated GS apples produced higher levels of (E,E)-a-farnesene than RG. Transgenic RG fruit downregulated for MdAFS1 expression produced significantly lower levels of (E,E)-a-farnesene. To evaluate the role of (E,E)-a-farnesene in fungal pathogenesis, MdAFS1 RNA interference transgenic fruit and RG controls were inoculated with three important apple post-harvest pathogens [Colletotrichum acutatum, Penicillium expansum and Neofabraea alba (synonym Phlyctema vagabunda)]. From results obtained over four seasons, we demonstrate that reduced (E,E)-a-farnesene is associated with decreased disease initiation rates of all three pathogens. In each case, the infection rate was significantly reduced 7 days post-inoculation, although the size of successful lesions was comparable with infections on control fruit. These results indicate that (E,E)-a-farnesene production is likely to be an important factor involved in fungal pathogenesis in apple fruit.

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Functional characterisation of MdMYB44 as a negative regulator in the response to cold and salt stress in apple calli

Cited by 14 publications

References 41 publications

FaMYB44.2, a transcriptional repressor, negatively regulates sucrose accumulation in strawberry receptacles through interplay with FaMYB10

FaMYB44.2, a transcriptional repressor, negatively regulates sucrose accumulation in strawberry receptacles through interplay with FaMYB10

Comparative transcriptome analysis of NaCl and KCl stress response in Malus hupehensis Rehd. Provide insight into the regulation involved in Na+ and K+ homeostasis

Genetic control of α‐farnesene production in apple fruit and its role in fungal pathogenesis

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