Regulatory role of indeterminate domain 10 (IDD10) in ammonium-dependent gene expression in rice roots

Xuan, Yuan; Priatama, Ryza A.; Kumar, Vinod; Han, Chang‐deok

doi:10.4161/psb.24139

Cited by 15 publications

(23 citation statements)

References 9 publications

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“…Transcriptome studies in Arabidopsis and rice revealed that AMT genes are up-regulated by brassinosteroids (BRs) (Yu et al, 2011), and that activation of OsAMT1;2 involves Related to ABI3/VP1 (Abscisic Acid-Insensitive 3/Viviparous 1)-Like 1 (RAVL1) downstream of the BR-receptor BRI1 (Brassinosteroid Insensitive 1) . In addition, the Indeterminate Domain 10 (IDD10) and DNA-Binding With One Finger (DOF18) transcription factors induce AMT transporter expression in rice, and thus modulate ammonium uptake (Xuan et al, 2013;Wu et al, 2017). Further, AMTs may be regulated at the post-transcriptional level or post-translationally by ammoniumdependent phosphorylation (Yuan et al, 2007b;Lanquar et al, 2009).…”

Section: Regulation At Cellular Levelmentioning

confidence: 99%

Source and sink mechanisms of nitrogen transport and use

2017

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Contents Summary35I.Introduction35II.Nitrogen acquisition and assimilation36III.Root‐to‐shoot transport of nitrogen38IV.Nitrogen storage pools in vegetative tissues39V.Nitrogen transport from source leaf to sink40VI.Nitrogen import into sinks42VII.Relationship between source and sink nitrogen transport processes and metabolism43VIII.Regulation of nitrogen transport43IX.Strategies for crop improvement44X.Conclusions46Acknowledgements47References47 Summary Nitrogen is an essential nutrient for plant growth. World‐wide, large quantities of nitrogenous fertilizer are applied to ensure maximum crop productivity. However, nitrogen fertilizer application is expensive and negatively affects the environment, and subsequently human health. A strategy to address this problem is the development of crops that are efficient in acquiring and using nitrogen and that can achieve high seed yields with reduced nitrogen input. This review integrates the current knowledge regarding inorganic and organic nitrogen management at the whole‐plant level, spanning from nitrogen uptake to remobilization and utilization in source and sink organs. Plant partitioning and transient storage of inorganic and organic nitrogen forms are evaluated, as is how they affect nitrogen availability, metabolism and mobilization. Essential functions of nitrogen transporters in source and sink organs and their importance in regulating nitrogen movement in support of metabolism, and vegetative and reproductive growth are assessed. Finally, we discuss recent advances in plant engineering, demonstrating that nitrogen transporters are effective targets to improve crop productivity and nitrogen use efficiency. While inorganic and organic nitrogen transporters were examined separately in these studies, they provide valuable clues about how to successfully combine approaches for future crop engineering.

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Section: Regulation At Cellular Levelmentioning

confidence: 99%

Source and sink mechanisms of nitrogen transport and use

2017

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“…As CAD2 is a major enzyme for SCW formation in rice aboveground tissues (Zhang et al 2006;Hirano et al 2012) and CAD3 is highly expressed in leaf blades and sheaths ( Figure S5), such downregulation might be responsible for the weaker breaking force and lower lignin level of OsIDD2ox leaves. Thus, in their promoters, we searched for sequences homologous to the consensus motifs of IDD target proteins previously reported (Kozaki et al 2004;Seo et al 2011;Xuan et al 2013;Yoshida et al 2014). As a result, we found the sequence AGACAG (or CTGTCT) to be present within the 1-kb upstream sequence (-1,000 bp) of both the CAD2 and CAD3 transcription start sites ( Figure 5A-C).…”

Section: Molecular Function Of Osidd2 In Scw Formationmentioning

confidence: 86%

OsIDD2, a zinc finger and INDETERMINATE DOMAIN protein, regulates secondary cell wall formation

Huang

Yoshida

Yano

et al. 2017

JIPB

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Previously, we found 123 transcription factors (TFs) as candidate regulators of secondary cell wall (SCW) formation in rice by using phylogenetic and co-expression network analyses. Among them, we examined in this work the role of OsIDD2, a zinc finger and indeterminate domain (IDD) family TF. Its overexpressors showed dwarfism, fragile leaves, and decreased lignin content, which are typical phenotypes of plants defective in SCW formation, whereas its knockout plants showed slightly increased lignin content. The RNA-seq and quantitative reverse transcription polymerase chain reaction analyses confirmed that some lignin biosynthetic genes were downregulated in the OsIDD2-overexpressing plants, and revealed the same case for other genes involved in cellulose synthesis and sucrose metabolism. The transient expression assay using rice protoplasts revealed that OsIDD2 negatively regulates the transcription of genes involved in lignin biosynthesis, cinnamyl alcohol dehydrogenase 2 and 3 (CAD2 and 3), and sucrose metabolism, sucrose synthase 5 (SUS5), whereas an AlphaScreen assay, which can detect the interaction between TFs and their target DNA sequences, directly confirmed the interaction between OsIDD2 and the target sequences located in the promoter regions of CAD2 and CAD3. Based on these observations, we conclude that OsIDD2 is negatively involved in SCW formation and other biological events by downregulating its target genes.

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“…Rice INDETERMINATE DOMAIN 10 ( OsIDD10 ), a NH 4 + signaling transcription factor, was reported to regulate the expression of NH 4 + uptake and N-assimilation genes [ 39 ]. Osidd10 mutants exhibited an ammonium-hypersensitive root growth defect [ 53 ]. Furthermore, among the ammonium uptake and assimilation genes, OsAMT1;2 and OsGDH2 were shown to be significantly dependent on the regulation of OsIDD10 expression for ammonium-mediated induction processes [ 53 ].…”

Section: Discussionmentioning

confidence: 99%

Rice PIN Auxin Efflux Carriers Modulate the Nitrogen Response in a Changing Nitrogen Growth Environment

Gho

Song

Bae

et al. 2021

IJMS

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Auxins play an essential role in regulating plant growth and adaptation to abiotic stresses, such as nutrient stress. Our current understanding of auxins is based almost entirely on the results of research on the eudicot Arabidopsis thaliana, however, the role of the rice PIN-FORMED (PIN) auxin efflux carriers in the regulation of the ammonium-dependent response remains elusive. Here, we analyzed the expression patterns in various organs/tissues and the ammonium-dependent response of rice PIN-family genes (OsPIN genes) via qRT–PCR, and attempted to elucidate the relationship between nitrogen (N) utilization and auxin transporters. To investigate auxin distribution under ammonium-dependent response after N deficiency in rice roots, we used DR5::VENUS reporter lines that retained a highly active synthetic auxin response. Subsequently, we confirmed that ammonium supplementation reduced the DR5::VENUS signal compared with that observed in the N-deficient condition. These results are consistent with the decreased expression patterns of almost all OsPIN genes in the presence of the ammonium-dependent response to N deficiency. Furthermore, the ospin1b mutant showed an insensitive phenotype in the ammonium-dependent response to N deficiency and disturbances in the regulation of several N-assimilation genes. These molecular and physiological findings suggest that auxin is involved in the ammonium assimilation process of rice, which is a model crop plant.

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Regulatory role of indeterminate domain 10 (IDD10) in ammonium-dependent gene expression in rice roots

Cited by 15 publications

References 9 publications

Source and sink mechanisms of nitrogen transport and use

Source and sink mechanisms of nitrogen transport and use

OsIDD2, a zinc finger and INDETERMINATE DOMAIN protein, regulates secondary cell wall formation

Rice PIN Auxin Efflux Carriers Modulate the Nitrogen Response in a Changing Nitrogen Growth Environment

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