Molecular characterization of the Jatropha curcas JcR1MYB1 gene encoding a putative R1-MYB transcription factor

Li, Hui‐Liang; Guo, Dong; Peng, Shi-Qing

doi:10.1590/s1415-47572014000400011

Cited by 11 publications

(3 citation statements)

References 27 publications

(37 reference statements)

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“…In this study, we identified a MYB transcription factor, RhMYB108, as being involved in the interplay between ethylene and JA signaling and thus regulating petal senescence in rose. According to their number of conserved MYB structural motifs, MYB proteins are classified into R1-MYB, R2R3-MYB, R3-MYB, and R4-MYB subfamilies 27,28 and function in the regulation of plant growth, hormone signal transduction, stress and disease resistance, and secondary metabolism [29][30][31][32][33] . Here, we show that RhMYB108, which belongs to the R2R3-MYB family, is intensely expressed in rose petals.…”

Section: Introductionmentioning

confidence: 99%

RhMYB108, an R2R3-MYB transcription factor, is involved in ethylene- and JA-induced petal senescence in rose plants

et al. 2019

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Rose (Rosa hybrida) plants are major ornamental species worldwide, and their commercial value greatly depends on their open flowers, as both the quality of fully open petals and long vase life are important. Petal senescence can be started and accelerated by various hormone signals, and ethylene is considered an accelerator of petal senescence in rose. To date, however, the underlying mechanism of signaling crosstalk between ethylene and other hormones such as JA in petal senescence remains largely unknown. Here, we isolated RhMYB108, an R2R3-MYB transcription factor, which is highly expressed in senescing petals as well as in petals treated with exogenous ethylene and JA. Applications of exogenous ethylene and JA markedly accelerated petal senescence, while the process was delayed in response to applications of 1-MCP, an ethylene action inhibitor. In addition, silencing of RhMYB108 alter the expression of SAGs such as RhNAC029, RhNAC053, RhNAC092, RhSAG12, and RhSAG113, and finally block ethylene-and JA-induced petal senescence. Furthermore, RhMYB108 was identified to target the promoters of RhNAC053, RhNAC092, and RhSAG113. Our results reveal a model in which RhMYB108 functions as a receptor of ethylene and JA signals to modulate the onset of petal senescence by targeting and enhancing senescence-associated gene expression.

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Section: Introductionmentioning

confidence: 99%

RhMYB108, an R2R3-MYB transcription factor, is involved in ethylene- and JA-induced petal senescence in rose plants

et al. 2019

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“…A common feature of MYB transcription factors is their nuclear localization signal peptides [24][25][26] . The rice gene OsMYB511 is expressed specifically in the nucleus 24 , as are the Jatropha curcas gene JcR1MYB1 25 and the Nicotiana benthamiana gene NbPHAN 26 .…”

Section: Discussionmentioning

confidence: 99%

Regulation of flowering time in chrysanthemum by the R2R3 MYB transcription factor CmMYB2 is associated with changes in gibberellin metabolism

et al. 2020

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The switch from vegetative growth to reproductive growth is a key event in the development of a plant. Here, the product of the chrysanthemum gene CmMYB2, an R2R3 MYB transcription factor that is localized in the nucleus, was shown to be a component of the switching mechanism. Plants engineered to overexpress CmMYB2 flowered earlier than did wild-type plants, while those in which CmMYB2 was suppressed flowered later. In both the overexpression and RNAi knockdown plants, a number of genes encoding proteins involved in gibberellin synthesis or signaling, as well as in the response to photoperiod, were transcribed at a level that differed from that in the wild type. Both yeast two-hybrid and bimolecular fluorescence complementation assays revealed that CmMYB2 interacts with CmBBX24, a zinc-finger transcription factor known to regulate flowering by its influence on gibberellin synthesis.

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“…The other name of the plant is Curcas purgans. Pharmacological reports revealed that it is having anti microbial 4,5,6 , anti-inflammatory 7 , antimetastatic 8 , antitumor 8 , coagulant and anti-coagulant (dose dependent), disinfectant, antiparasitic activity.…”

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confidence: 99%

Cardioprotective Effect of Jatropha Curcas Fruit Extracts Against Carbon Tetrachloride Induced Cardiotoxicity in Rats

Komali¹,

Kavya²,

Kumar³

et al. 2016

Int. Res. J. Pharm.

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The present study was undertaken to explore the cardioprotective effect of Jatropha curcas fruit extracts against carbon tetrachloride induced cardiotoxicity in rats. Cardiotoxicity was induced by CCl4 (3ml/kg body weight) in animals. Blood biochemical, hematological parameters and histopathological studies were carried to assess the cardioprotective effect. CCl4 administration induced significant cardiotoxicity in rats, which was evident from enhanced levels of glucose, cholesterol, triglycerides and all hematological parameters. Pretreatment of silymarin (50mg/kg dose orally) significantly reversed carbon tetrachloride induced cardiotoxicity. From the obtained results it may be concluded that Jatropha curcas methanol extract (250mg/kg body weight) showed significant protective effect against CCl4 induced cardiotoxicity in rats than Jatropha curcas aqueous extract (p<0.001) for most of the blood biochemical parameters, hematological parameters as well in attenuation of pathological changes in heart tissues.

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Molecular characterization of the Jatropha curcas JcR1MYB1 gene encoding a putative R1-MYB transcription factor

Cited by 11 publications

References 27 publications

RhMYB108, an R2R3-MYB transcription factor, is involved in ethylene- and JA-induced petal senescence in rose plants

RhMYB108, an R2R3-MYB transcription factor, is involved in ethylene- and JA-induced petal senescence in rose plants

Regulation of flowering time in chrysanthemum by the R2R3 MYB transcription factor CmMYB2 is associated with changes in gibberellin metabolism

Cardioprotective Effect of Jatropha Curcas Fruit Extracts Against Carbon Tetrachloride Induced Cardiotoxicity in Rats

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