Over-expression of mango (Mangifera indica L.) MiARF2 inhibits root and hypocotyl growth of Arabidopsis

Wu, Bei; Li, Yunhe; Wu, Jianyong; Chen, Qizhu; Huang, Xia; Chen, Yun-Feng; Huang, Xue-Lin

doi:10.1007/s11033-010-9990-8

Cited by 19 publications

(11 citation statements)

References 36 publications

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“…, 2010). Over‐expression of mango ( Mangifera indica L. ) ARF2 inhibits the root growth of Arabidopsis (Wu et al. , 2011).…”

Section: Discussionmentioning

confidence: 99%

“…A transcript-null Arabidopsis ARF2 mutant (arf2) and artificial miRNA knockdown mutants of ARF2, ARF3 and ARF4 had longer lateral roots (Marin et al, 2010). Over-expression of mango (Mangifera indica L.) ARF2 inhibits the root growth of Arabidopsis (Wu et al, 2011). An Arabidopsis double mutant lacking ARF7 and ARF19 showed decreased lateral root formation (Okushima et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

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Soybean NAC transcription factors promote abiotic stress tolerance and lateral root formation in transgenic plants

Hao¹,

Wei²,

et al. 2011

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). † These authors contributed equally to this work. SUMMARYNAC transcription factors play important roles in plant growth, development and stress responses. Previously, we identified multiple NAC genes in soybean (Glycine max). Here, we identify the roles of two genes, GmNAC11 and GmNAC20, in stress responses and other processes. The two genes were differentially induced by multiple abiotic stresses and plant hormones, and their transcripts were abundant in roots and cotyledons. Both genes encoded proteins that localized to the nucleus and bound to the core DNA sequence CGT[G/A]. In the protoplast assay system, GmNAC11 acts as a transcriptional activator, whereas GmNAC20 functions as a mild repressor; however, the C-terminal end of GmANC20 has transcriptional activation activity. Overexpression of GmNAC20 enhances salt and freezing tolerance in transgenic Arabidopsis plants; however, GmNAC11 over-expression only improves salt tolerance. Over-expression of GmNAC20 also promotes lateral root formation. GmNAC20 may regulate stress tolerance through activation of the DREB/CBF-COR pathway, and may control lateral root development by altering auxin signaling-related genes. GmNAC11 probably regulates DREB1A and other stress-related genes. The roles of the two GmNAC genes in stress tolerance were further analyzed in soybean transgenic hairy roots. These results provide a basis for genetic manipulation to improve the agronomic traits of important crops.

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“…, 2010). Over‐expression of mango ( Mangifera indica L. ) ARF2 inhibits the root growth of Arabidopsis (Wu et al. , 2011).…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Soybean NAC transcription factors promote abiotic stress tolerance and lateral root formation in transgenic plants

Hao¹,

Wei²,

et al. 2011

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“…Here, we identify novel roles for CYCD3;1 and the AINTEGUMENTA transcription factor in root secondary growth. Prolonged expression of CYCD3;1 in leaves caused by ectopic expression of ANT ( Mizukami and Fischer, 2000 ) has led to the suggestion that CYCD3;1 is a target of ANT ( Anastasiou and Lenhard, 2007 ; Wu et al, 2011 ). However, we show here that CYCD3 and AINTEGUMENTA play independent roles in regulating secondary thickening in roots, but provide evidence that they are co-regulated by cytokinins.…”

Section: Introductionmentioning

confidence: 99%

AINTEGUMENTA and the D-type cyclin CYCD3;1 regulate root secondary growth and respond to cytokinins

et al. 2015

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Higher plant vasculature is characterized by two distinct developmental phases. Initially, a well-defined radial primary pattern is established. In eudicots, this is followed by secondary growth, which involves development of the cambium and is required for efficient water and nutrient transport and wood formation. Regulation of secondary growth involves several phytohormones, and cytokinins have been implicated as key players, particularly in the activation of cell proliferation, but the molecular mechanisms mediating this hormonal control remain unknown. Here we show that the genes encoding the transcription factor AINTEGUMENTA (ANT) and the D-type cyclin CYCD3;1 are expressed in the vascular cambium of Arabidopsis roots, respond to cytokinins and are both required for proper root secondary thickening. Cytokinin regulation of ANT and CYCD3 also occurs during secondary thickening of poplar stems, suggesting this represents a conserved regulatory mechanism.

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“…ARFs, which regulate the expression of auxin-responsive genes, are involved in all the developmental processes from embryogenesis to senescence [2]. Many plant physiological functions depend on ARFs, including apical hook formation in seedlings [3], abaxial identity in the gynoecium [4], embryo development and vascular formation [5], hypocotyl tropisms [6], fruit development from fertilization [7], lateral root formation [8] and root system growth [9].…”

Section: Introductionmentioning

confidence: 99%

OsARF16 Is Involved in Cytokinin-Mediated Inhibition of Phosphate Transport and Phosphate Signaling in Rice (Oryza sativa L.)

et al. 2014

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BackgroundPlant responses to phytohormone stimuli are the most important biological features for plants to survive in a complex environment. Cytokinin regulates growth and nutrient homeostasis, such as the phosphate (Pi) starvation response and Pi uptake in plants. However, the mechanisms underlying how cytokinin participates in Pi uptake and Pi signaling are largely unknown. In this study, we found that OsARF16 is required for the cytokinin response and is involved in the negative regulation of Pi uptake and Pi signaling by cytokinin.Principal FindingsThe mutant osarf16 showed an obvious resistance to exogenous cytokinin treatment and the expression level of the OsARF16 gene was considerably up-regulated by cytokinin. Cytokinin (6-BA) application suppressed Pi uptake and the Pi starvation response in wild-type Nipponbare (NIP) and all these responses were compromised in the osarf16 mutant. Our data showed that cytokinin inhibits the transport of Pi from the roots to the shoots and that OsARF16 is involved in this process. The Pi content in the osarf16 mutant was much higher than in NIP under 6-BA treatment. The expressions of PHOSPHATE TRANSPORTER1 (PHT1) genes, phosphate (Pi) starvation-induced (PSI) genes and purple PAPase genes were higher in the osarf16 mutant than in NIP under cytokinin treatment.ConclusionOur results revealed a new biological function for OsARF16 in the cytokinin-mediated inhibition of Pi uptake and Pi signaling in rice.

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Over-expression of mango (Mangifera indica L.) MiARF2 inhibits root and hypocotyl growth of Arabidopsis

Cited by 19 publications

References 36 publications

Soybean NAC transcription factors promote abiotic stress tolerance and lateral root formation in transgenic plants

Soybean NAC transcription factors promote abiotic stress tolerance and lateral root formation in transgenic plants

AINTEGUMENTA and the D-type cyclin CYCD3;1 regulate root secondary growth and respond to cytokinins

OsARF16 Is Involved in Cytokinin-Mediated Inhibition of Phosphate Transport and Phosphate Signaling in Rice (Oryza sativa L.)

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