HY5 regulates nitrite reductase 1 (NIR1) and ammonium transporter1;2 (AMT1;2) in Arabidopsis seedlings

Huang, Lei; Zhang, Hongcheng; Zhang, Huiyong; Deng, Xing Wang; Wei, Ning

doi:10.1016/j.plantsci.2015.05.004

Cited by 62 publications

(51 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The sugar‐signaling pathway enhances nitrate and nitrite reductase as well as GS and GOGAT activities via both transcriptional and post‐transcriptional regulation (Meyer & Stitt, ). The phytochrome signaling cascade induces expression of the assimilation genes through transcription factors HY5/HYH (Elongated Hypocotyl 5/HY5 homologue) (Jonassen et al ., ), and represses AtAMT1;2 and NPF6.3/NRT1.1 (Huang et al ., ). Post‐transcriptional regulation of nitrate reductase activity through phosphorylation/dephosphorylation by PP2A (Protein Phosphatase 2A) and CDPK (Calcium‐Dependent Protein Kinase) and SNRK (SNF/Sucrose Non‐fermenting Related Kinase) is also light‐ and sugar‐dependent (Lillo, ).…”

Section: Regulation Of Nitrogen Transportmentioning

confidence: 97%

Source and sink mechanisms of nitrogen transport and use

2017

View full text Add to dashboard Cite

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.

show abstract

Section: Regulation Of Nitrogen Transportmentioning

confidence: 97%

Source and sink mechanisms of nitrogen transport and use

2017

View full text Add to dashboard Cite

show abstract

“…Stem-piped light can activate root-expressed phyB, which on its turn regulates HY5 in the Arabidopsis root (Lee et al, 2016). HY5 is involved in root growth in response to light, modulating, for example, root gravitropism and nitrogen uptake (Cluis et al, 2004;Lee et al, 2007;Huang et al, 2015;Chen et al, 2016). Therefore, stem-piped light might communicate information about the aboveground light environment to the root (Fig.…”

Section: Stem-piped Lightmentioning

confidence: 99%

Light Signaling, Root Development, and Plasticity

2017

View full text Add to dashboard Cite

“…Nitrogen compound (

{NO}_{3}^{-}

{NH}_{4}^{+}

) uptake, assimilation, and metabolism are dependent on light, and their behaviour is significantly regulated by the circadian clock (Li et al , ). Interestingly, HY5 positively regulates gene expression of nitrate and nitrite reductases in A. thaliana (Huang et al , ).…”

Section: Introductionmentioning

confidence: 99%

Heterodera schachtii infection affects nitrogen metabolism in Arabidopsis thaliana

et al. 2020

View full text Add to dashboard Cite

Nitrogen metabolism is important for physiological processes during normal growth and development, as well as plant defence responses. Second‐stage juveniles of the cyst nematode Heterodera schachtii penetrate into the root and initiate permanent feeding sites called syncytia, from which they draw all necessary nutrients. To unravel whether the cyst nematode infestation changes nitrogen metabolism, the enzymatic activity and gene expression of nitrate (NIA) and nitrite (NIR) reductases and glutamate dehydrogenase (GDH), as well as levels of the metabolites nitrates, nitrites, and ammonium ions were estimated both locally in inoculated roots and systemically in shoots of inoculated Arabidopsis thaliana plants at 3, 7, and 15 days post‐inoculation (dpi). Moreover, gene expression of long hypocotyle 5 (HY5), a basic‐region leucine zipper (bZIP) transcription factor, was also determined, to learn more about the potential transcriptional regulation of the analysed enzymes. It was shown that the activity of nitrogen‐related enzymes and the content of metabolites fluctuated during the whole period of infection. These results were accompanied by organ‐specific and dpi‐dependent gene expression patterns. The high gene expression level of HY5 in infected roots at 7 and 15 dpi coexisted with enhanced expression of NIA1 and NIR1 at 7 dpi and NIA2 at 15 dpi. Enhanced HY5 expression level in shoots of infected plants at 15 dpi was followed by up‐regulation of NIA1 expression, suggesting that HY5 may regulate the gene expression of NIA and NIR during nematode infection. Our results indicate that changes in plant nitrogen metabolism occur during cyst nematode infection.

show abstract

HY5 regulates nitrite reductase 1 (NIR1) and ammonium transporter1;2 (AMT1;2) in Arabidopsis seedlings

Cited by 62 publications

References 48 publications

Source and sink mechanisms of nitrogen transport and use

Source and sink mechanisms of nitrogen transport and use

Light Signaling, Root Development, and Plasticity

Heterodera schachtii infection affects nitrogen metabolism in Arabidopsis thaliana

Contact Info

Product

Resources

About