The roles of jasmonate signalling in nitrogen uptake and allocation in rice (<i>Oryza sativa</i> L.)

Wu, Xiaoying; Ding, Chaohui; Baerson, Scott R.; Lian, Fazhuo; Lin, Xianhui; Zhang, Liqin; Wu, Choufei; Hwang, Shih Ying; Zeng, Rensen; Song, Yuanyuan

doi:10.1111/pce.13451

Cited by 36 publications

(29 citation statements)

References 75 publications

(109 reference statements)

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“…Of these genes, 104 had a functional or KEGG assignment, including a suite of transcription factors and genes with known important roles in nitrogen mobilization 40 like ASPARAGINE SYNTHETASE ( ASN1 ), GLUTAMATE DEHYDROGENASE ( GDH2 ), and GLUTAMATE DECARBOXYLASE ( GAD1 ). Remarkably, the most prominent (“hubby” or central) transcription factors within the network are a subset of JASMONATE ZIM DOMAIN (JAZ) family proteins that regulate jasmonic acid biosynthesis (e.g., ALLENE OXIDE SYNTHASE, AOS) and signaling, a pathway recently shown to activate nitrogen remobilization in rice 41 (Fig. 4d ).…”

Section: Resultsmentioning

confidence: 99%

Genome biology of the paleotetraploid perennial biomass crop Miscanthus

et al. 2020

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Miscanthus is a perennial wild grass that is of global importance for paper production, roofing, horticultural plantings, and an emerging highly productive temperate biomass crop. We report a chromosome-scale assembly of the paleotetraploid M. sinensis genome, providing a resource for Miscanthus that links its chromosomes to the related diploid Sorghum and complex polyploid sugarcanes. The asymmetric distribution of transposons across the two homoeologous subgenomes proves Miscanthus paleo-allotetraploidy and identifies several balanced reciprocal homoeologous exchanges. Analysis of M. sinensis and M. sacchariflorus populations demonstrates extensive interspecific admixture and hybridization, and documents the origin of the highly productive triploid bioenergy crop M. × giganteus. Transcriptional profiling of leaves, stem, and rhizomes over growing seasons provides insight into rhizome development and nutrient recycling, processes critical for sustainable biomass accumulation in a perennial temperate grass. The Miscanthus genome expands the power of comparative genomics to understand traits of importance to Andropogoneae grasses.

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Section: Resultsmentioning

confidence: 99%

Genome biology of the paleotetraploid perennial biomass crop Miscanthus

et al. 2020

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“…At the transcriptional level their regulation seems to be remarkably tissue and cell type-specific (Gattolin et al, 2009). Additionally, recent data indicate that AtTIPs are regulated by nitrogen availability in the root via the shoot (Wu et al, 2019). Thus, HORVU4Hr1G085250 represents an interesting candidate for systemic communication during barley root colonisation by beneficial and pathogenic fungi.…”

Section: New Phytologistmentioning

confidence: 99%

The inconspicuous gatekeeper: endophytic Serendipita vermifera acts as extended plant protection barrier in the rhizosphere

et al. 2019

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Summary In nature, beneficial and pathogenic fungi often simultaneously colonise plants. Despite substantial efforts to understand the composition of natural plant−microbe communities, the mechanisms driving such multipartite interactions remain largely unknown. Here we address how the interaction between the beneficial root endophyte Serendipita vermifera and the pathogen Bipolaris sorokiniana affects fungal behaviour and determines barley host responses using a gnotobiotic soil‐based split‐root system. Fungal confrontation in soil resulted in induction of B. sorokiniana genes involved in secondary metabolism and a significant repression of genes encoding putative effectors. In S. vermifera, genes encoding hydrolytic enzymes were strongly induced. This antagonistic response was not activated during the tripartite interaction in barley roots. Instead, we observed a specific induction of S. vermifera genes involved in detoxification and redox homeostasis. Pathogen infection but not endophyte colonisation resulted in substantial host transcriptional reprogramming and activation of defence. In the presence of S. vermifera, pathogen infection and disease symptoms were significantly reduced despite no marked alterations of the plant transcriptional response. The activation of stress response genes and concomitant repression of putative effector gene expression in B. sorokiniana during confrontation with the endophyte suggest a reduction of the pathogen's virulence potential before host plant infection.

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“…The increase in expression level of HvTIP1;2, HvTIP2;2, HvTIP4;1 and HvTIP4;2 after MeJA treatment might lead to vacuolar unloading of ammonia and urea from vacuole to cytoplasm in response to decreased nitrogen content in leaves observed in our study. The repression of nitrate uptake by roots and, consequently, the reduced level of nitrogen in leaves was observed in rice ( Oryza sativa ) and tomato ( Solanum lycopersicum ) after MeJA treatment [ 114 , 115 ].…”

Section: Discussionmentioning

confidence: 99%

Methyl Jasmonate Affects Photosynthesis Efficiency, Expression of HvTIP Genes and Nitrogen Homeostasis in Barley

Kurowska

Daszkowska‐Golec

Gajecka

et al. 2020

IJMS

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Jasmonates modulate many growth and developmental processes and act as stress hormones that play an important role in plant tolerance to biotic and abiotic stresses. Therefore, there is a need to identify the genes that are regulated through the jasmonate signalling pathway. Aquaporins, and among them the Tonoplast Intrinsic Proteins (TIPs), form the channels in cell membranes that are responsible for the precise regulation of the movement of water and other substrates between cell compartments. We identified the cis-regulatory motifs for the methyl jasmonate (MeJA)-induced genes in the promoter regions of all the HvTIP genes, which are active in barley seedlings, and thus we hypothesised that the HvTIP expression could be a response to jasmonate signalling. In the presented study, we determined the effect of methyl jasmonate on the growth parameters and photosynthesis efficiency of barley seedlings that had been exposed to different doses of MeJA (15–1000 µM × 120 h) in a hydroponic solution. All of the applied MeJA concentrations caused a significant reduction of barley seedling growth, which was most evident in the length of the first leaf sheath and dry leaf weight. The observed decrease of the PSII parameters after the exposure to high doses of MeJA (500 µM or higher) was associated with the downregulation of HvPsbR gene encoding one of the extrinsic proteins of the Oxygen Evolving Complex. The reduced expression of HvPsbR might lead to the impairment of the OEC action, manifested by the occurrence of the K-band in an analysis of fluorescence kinetics after MeJA treatment as well as reduced photosynthesis efficiency. Furthermore, methyl jasmonate treatment caused a decrease in the nitrogen content in barley leaves, which was associated with an increased expression the four tonoplast aquaporin genes (HvTIP1;2, HvTIP2;2, HvTIP4;1 and HvTIP4;2) predicted to transport the nitrogen compounds from the vacuole to the cytosol. The upregulation of the nitrogen-transporting HvTIPs might suggest their involvement in the vacuolar unloading of ammonia and urea, which both could be remobilised when the nitrogen content in the leaves decreases. Our research provides tips on physiological role of the individual TIP subfamily members of aquaporins under methyl jasmonate action.

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The roles of jasmonate signalling in nitrogen uptake and allocation in rice (Oryza sativa L.)

Cited by 36 publications

References 75 publications

Genome biology of the paleotetraploid perennial biomass crop Miscanthus

Genome biology of the paleotetraploid perennial biomass crop Miscanthus

The inconspicuous gatekeeper: endophytic Serendipita vermifera acts as extended plant protection barrier in the rhizosphere

Methyl Jasmonate Affects Photosynthesis Efficiency, Expression of HvTIP Genes and Nitrogen Homeostasis in Barley

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