Featured
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Article |
NLR surveillance of pathogen interference with hormone receptors induces immunity
The tomato spotted wilt orthotospovirus nonstructural protein NSs interferes with phytohormone signalling in plants to compromise plant defences by interacting with plant TCP21—this effect of the viral protein is counteracted by the plant NLR immune receptor protein Tsw.
- Jing Chen
- , Yanxiao Zhao
- & Xiaorong Tao
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Article |
Adenylate cyclase activity of TIR1/AFB auxin receptors in plants
Adenylate cyclase activity in TIR1/AFB, the canonical auxin receptor, has an essential role in auxin-mediated root growth inhibition in land plants.
- Linlin Qi
- , Mateusz Kwiatkowski
- & Jiří Friml
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Article
| Open Access
Structures and mechanism of the plant PIN-FORMED auxin transporter
Structural and biophysical analysis of the Arabidopsis thaliana auxin transporter PIN8 reveal that PIN transporters export auxin using an elevator mechanism.
- Kien Lam Ung
- , Mikael Winkler
- & Bjørn Panyella Pedersen
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Article
| Open Access
An oxygen-sensing mechanism for angiosperm adaptation to altitude
Plants have adapted to grow at specific altitudes by regulating chlorophyll synthesis in response to ambient oxygen concentration, calibrated by altitude-dependent activity of GROUP VII ETHYLENE RESPONSE FACTOR.
- Mohamad Abbas
- , Gunjan Sharma
- & Michael J. Holdsworth
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Article |
Genome-edited powdery mildew resistance in wheat without growth penalties
Tamlo-R32, an engineered wheat mutant allele of the Mildew resistance locus O (MLO) gene, confers resistance to powdery mildew, retains robust wheat growth, and can be transferred to other agriculturally important wheat varieties.
- Shengnan Li
- , Dexing Lin
- & Caixia Gao
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Article
| Open Access
Cold-induced Arabidopsis FRIGIDA nuclear condensates for FLC repression
In Arabidopsis thaliana, downregulation of the floral repressor FLC in response to cold occurs through a mechanism in which the FLC activator FRIGIDA is sequestered into biomolecular condensates away from the FLC promoter.
- Pan Zhu
- , Clare Lister
- & Caroline Dean
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Article |
A network of transcriptional repressors modulates auxin responses
Genes encoding the class A auxin-response factor group of plant transcriptional activators reside in constitutively open chromatin, enabling their continual regulation by transcriptional repressors to modulate auxin signalling throughout development.
- Jekaterina Truskina
- , Jingyi Han
- & Teva Vernoux
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Article |
Temperature-dependent growth contributes to long-term cold sensing
The authors find that slow plant growth at low temperatures during winter reduces dilution of the transcription factor NTL8, which allows slow accumulation of NTL8 and thus the gradual increase in transcription of VIN3—a gene involved in memory of cold exposure.
- Yusheng Zhao
- , Rea L. Antoniou-Kourounioti
- & Martin Howard
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Article |
Plant 22-nt siRNAs mediate translational repression and stress adaptation
Characterization of 22-nucleotide short interfering RNAs in plants finds that they accumulate in response to environmental stress, causing translational repression, inhibition of plant growth and enhanced stress responses.
- Huihui Wu
- , Bosheng Li
- & Hongwei Guo
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Article |
Mass-spectrometry-based draft of the Arabidopsis proteome
A quantitative atlas of the transcriptomes, proteomes and phosphoproteomes of 30 tissues of the model plant Arabidopsis thaliana provides a valuable resource for plant research.
- Julia Mergner
- , Martin Frejno
- & Bernhard Kuster
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Letter |
Arabidopsis FLL2 promotes liquid–liquid phase separation of polyadenylation complexes
A genetic screen for factors required by the Arabidopsis RNA-binding protein FCA identifies FLL2 as necessary in the formation of FCA nuclear bodies, and thus a role for FLL2 in liquid–liquid phase separation.
- Xiaofeng Fang
- , Liang Wang
- & Caroline Dean
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Letter |
Transcriptional regulation of nitrogen-associated metabolism and growth
The yeast one-hybrid network for nitrogen-associated metabolism in Arabidopsis reveals the transcription factors that regulate the architecture of root and shoot systems under conditions of changing nitrogen availability.
- Allison Gaudinier
- , Joel Rodriguez-Medina
- & Siobhan M. Brady
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Article |
SWI2/SNF2 ATPase CHR2 remodels pri-miRNAs via Serrate to impede miRNA production
The chromatin remodelling protein CHR2 interacts with Serrate in Arabidopsis to regulate microRNA biogenesis.
- Zhiye Wang
- , Zeyang Ma
- & Xiuren Zhang
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Letter |
MicroRNAs from the parasitic plant Cuscuta campestris target host messenger RNAs
A parasitic plant produces microRNAs that target host messenger RNAs, causing them to be processed into small interfering RNAs.
- Saima Shahid
- , Gunjune Kim
- & Michael J. Axtell
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Article |
Root microbiota drive direct integration of phosphate stress and immunity
In Arabidopsis thaliana, a genetic network that controls the phosphate stress response also influences the structure of the root microbiome community, even under non-stress phosphate conditions.
- Gabriel Castrillo
- , Paulo José Pereira Lima Teixeira
- & Jeffery L. Dangl
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Letter |
Reducing phosphorus accumulation in rice grains with an impaired transporter in the node
The phosphorous transporter SPDT is identified in rice; depletion of the transporter gene alters the phosphorus distribution in rice grains and leaves, suggesting that the strategy could be used for agricultural purposes.
- Naoki Yamaji
- , Yuma Takemoto
- & Jian Feng Ma
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Letter |
Primary transcripts of microRNAs encode regulatory peptides
Plant primary microRNA (miRNA) transcripts (pri-miRNAs) are not just a source of miRNAs but can also encode regulatory peptides (miPEPs) that enhance the accumulation, and so the effect, of the corresponding mature miRNAs—an observation that may have agronomical applications.
- Dominique Lauressergues
- , Jean-Malo Couzigou
- & Jean-Philippe Combier
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Letter |
miRNAs trigger widespread epigenetically activated siRNAs from transposons in Arabidopsis
The generation of widespread epigenetically activated short interfering RNAs by the targeting of microRNAs to transposon transcripts in Arabidopsis thaliana is shown to be a latent mechanism that only becomes active when the transcripts are epigenetically reactivated, for example, during reprogramming of the germ line.
- Kate M. Creasey
- , Jixian Zhai
- & Robert A. Martienssen
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Article |
Crystal structure of the plant dual-affinity nitrate transporter NRT1.1
A description of the crystal structure of unphosphorylated NRT1.1 provides insights into how phosphorylation switches the nitrate transporter between the low-affinity and high-affinity states.
- Ji Sun
- , John R. Bankston
- & Ning Zheng
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Article |
Molecular basis of nitrate uptake by the plant nitrate transporter NRT1.1
In Arabidopsis thaliana the phosphorylation state of the ‘dual affinity’ transporter, NRT1.1, allows the uptake of nitrate over a wide concentration range; the crystal structure and molecular basis for this is described in this study.
- Joanne L. Parker
- & Simon Newstead
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Letter |
SRA- and SET-domain-containing proteins link RNA polymerase V occupancy to DNA methylation
In Arabidopsis, the RNA-directed DNA methylation pathway is important for establishing and maintaining DNA methylation — here Pol V is shown to depend on SUVH2 and SUVH9, where both of these proteins are proposed to bind specifically to methylated DNA to recruit Pol V, providing a self-reinforcing loop mechanism for maintenance of RNA-directed DNA methylation.
- Lianna M. Johnson
- , Jiamu Du
- & Steven E. Jacobsen
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Letter |
Structural basis for the modular recognition of single-stranded RNA by PPR proteins
Although the roles of pentatricopeptide repeat (PPR) proteins in RNA metabolism are well characterised, the mechanism by which they recognise specific single-stranded (ss)RNAs remains ill-understood; here X-ray crystal structures of maize PPR10 in the presence and absence of ssRNA provide details of the PPR10–ssRNA interaction.
- Ping Yin
- , Quanxiu Li
- & Nieng Yan
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Research Highlights |
Plant fertilization protein found
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Letter |
A Xanthomonas uridine 5′-monophosphate transferase inhibits plant immune kinases
The plant pathogen Xanthomonas campestris effector, AvrAC, is shown to have uridine 5′-monophosphate transferase activity, enabling it to interfere with plant immune signalling by using this protein modification.
- Feng Feng
- , Fan Yang
- & Jian-Min Zhou
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Letter |
A plastidial sodium-dependent pyruvate transporter
- Tsuyoshi Furumoto
- , Teppei Yamaguchi
- & Katsura Izui
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Letter |
The ELF4–ELF3–LUX complex links the circadian clock to diurnal control of hypocotyl growth
- Dmitri A. Nusinow
- , Anne Helfer
- & Steve A. Kay
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Architecture of chloroplast TOC–TIC translocon supercomplex
Small RNAs are on the move