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Nature Plants

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https://www.readbyqxmd.com/read/30297831/nin-interacts-with-nlps-to-mediate-nitrate-inhibition-of-nodulation-in-medicago-truncatula
#1
Jie-Shun Lin, Xiaolin Li, Zhenpeng Luo Luo, Kirankumar S Mysore, Jiangqi Wen, Fang Xie
Legume plants can assimilate inorganic nitrogen and have access to fixed nitrogen through symbiotic interaction with diazotrophic bacteria called rhizobia. Symbiotic nitrogen fixation is an energy-consuming process and is strongly inhibited when sufficient levels of fixed nitrogen are available, but the molecular mechanisms governing this regulation are largely unknown. The transcription factor nodule inception (NIN) is strictly required for nodulation and belongs to a family of NIN-like proteins (NLPs), which have been implicated in the regulation of nitrogen homeostasis in Arabidopsis...
October 8, 2018: Nature Plants
https://www.readbyqxmd.com/read/30297830/chlorophyll-a-b-binding-specificity-in-water-soluble-chlorophyll-protein
#2
Daniel M Palm, Alessandro Agostini, Vivien Averesch, Philipp Girr, Mara Werwie, Shigekazu Takahashi, Hiroyuki Satoh, Elmar Jaenicke, Harald Paulsen
We altered the chlorophyll (Chl) binding sites in various versions of water-soluble chlorophyll protein (WSCP) by amino acid exchanges to alter their preferences for either Chl a or Chl b. WSCP is ideally suited for this mutational analysis since it forms a tetrameric complex with only four identical Chl binding sites. A loop of 4-6 amino acids is responsible for Chl a versus Chl b selectivity. We show that a single amino acid exchange within this loop changes the relative Chl a/b affinities by a factor of 40...
October 8, 2018: Nature Plants
https://www.readbyqxmd.com/read/30202108/comparative-phylogenetic-methods-and-the-cultural-evolution-of-medicinal-plant-use
#3
REVIEW
Irene Teixidor-Toneu, Fiona M Jordan, Julie A Hawkins
Human life depends on plant biodiversity and the ways in which plants are used are culturally determined. Whilst anthropologists have used phylogenetic comparative methods (PCMs) to gain an increasingly sophisticated understanding of the evolution of political, religious, social and material culture, plant use has been almost entirely neglected. Medicinal plants are of special interest because of their role in maintaining people's health across the world. PCMs in particular, and cultural evolutionary theory in general, provide a framework in which to study the diversity of medicinal plant applications cross-culturally, and to infer changes in plant use over time...
September 10, 2018: Nature Plants
https://www.readbyqxmd.com/read/30287961/the-green-revolution-did-not-increase-poverty-and-hunger-for-millions
#4
LETTER
Devang Mehta
No abstract text is available yet for this article.
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287960/reply-to-the-green-revolution-did-not-increase-poverty-and-hunger-for-millions
#5
LETTER
(no author information available yet)
No abstract text is available yet for this article.
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287959/an-indoor-rice-model
#6
Jun Lyu
No abstract text is available yet for this article.
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287958/valuing-trees-for-aesthetics
#7
Ryan Scarrow
No abstract text is available yet for this article.
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287957/rapid-improvement-of-domestication-traits-in-an-orphan-crop-by-genome-editing
#8
Zachary H Lemmon, Nathan T Reem, Justin Dalrymple, Sebastian Soyk, Kerry E Swartwood, Daniel Rodriguez-Leal, Joyce Van Eck, Zachary B Lippman
Genome editing holds great promise for increasing crop productivity, and there is particular interest in advancing breeding in orphan crops, which are often burdened by undesirable characteristics resembling wild relatives. We developed genomic resources and efficient transformation in the orphan Solanaceae crop 'groundcherry' (Physalis pruinosa) and used clustered regularly interspaced short palindromic repeats (CRISPR)-CRISPR-associated protein-9 nuclease (Cas9) (CRISPR-Cas9) to mutate orthologues of tomato domestication and improvement genes that control plant architecture, flower production and fruit size, thereby improving these major productivity traits...
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287956/nutritious-corn
#9
Lei Lei
No abstract text is available yet for this article.
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287955/the-roots-of-culture
#10
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287954/complete-substitution-of-a-secondary-cell-wall-with-a-primary-cell-wall-in-arabidopsis
#11
Shingo Sakamoto, Marc Somssich, Miyuki T Nakata, Faride Unda, Kimie Atsuzawa, Yasuko Kaneko, Ting Wang, Anne-Maarit Bågman, Allison Gaudinier, Kouki Yoshida, Siobhan M Brady, Shawn D Mansfield, Staffan Persson, Nobutaka Mitsuda
The bulk of a plant's biomass, termed secondary cell walls, accumulates in woody xylem tissues and is largely recalcitrant to biochemical degradation and saccharification1 . By contrast, primary cell walls, which are chemically distinct, flexible and generally unlignified2 , are easier to deconstruct. Thus, engineering certain primary wall characteristics into xylem secondary walls would be interesting to readily exploit biomass for industrial processing. Here, we demonstrated that by expressing AP2/ERF transcription factors from group IIId and IIIe in xylem fibre cells of mutants lacking secondary walls, we could generate plants with thickened cell wall characteristics of primary cell walls in the place of secondary cell walls...
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287953/primary-walls-in-second-place
#12
Daniel J Cosgrove
No abstract text is available yet for this article.
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287952/the-taming-of-the-shrub
#13
Luca Comai
No abstract text is available yet for this article.
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287951/structural-basis-for-brassinosteroid-response-by-bil1-bzr1
#14
Shohei Nosaki, Takuya Miyakawa, Yuqun Xu, Akira Nakamura, Kei Hirabayashi, Tadao Asami, Takeshi Nakano, Masaru Tanokura
BRZ-INSENSITIVE-LONG HYPOCOTYL 1 (BIL1)/BRASSINAZOLE-RESISTANT 1 (BZR1) is a master transcription factor of brassinosteroid (BR) signalling. The varieties of nucleobase recognition of the NN-BRRE-core motif (NNCGTG), one of variant G-box motifs, distinguish BIL1/BZR1 from basic helix-loop-helix transcription factors, underlying the specific regulation of BR-responsive genes. Here, we show the non-canonical bHLH dimer formation of BIL1/BZR1 to optimize the interaction network with DNA and the orientation of a key residue for NN-BRRE-core motif recognition...
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287950/bias-in-resistance-gene-prediction-due-to-repeat-masking
#15
Philipp E Bayer, David Edwards, Jacqueline Batley
Several recently published Brassicaceae genome annotations show strong differences in resistance (R)-gene content. We believe that this is caused by different approaches to repeat masking. Here we show that some of the repeats stored in public databases used for repeat masking carry pieces of predicted R-gene-related domains, and demonstrate that at least some of the variance in R-gene content in recent genome annotations is caused by using these repeats for repeat masking. We also show that other classes of genes are less affected by this phenomenon, and estimate a false positive rate of R genes (0 to 4...
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287949/overexpression-of-rubisco-subunits-with-raf1-increases-rubisco-content-in-maize
#16
Coralie E Salesse-Smith, Robert E Sharwood, Florian A Busch, Johannes Kromdijk, Viktoriya Bardal, David B Stern
Rubisco catalyses a rate-limiting step in photosynthesis and has long been a target for improvement due to its slow turnover rate. An alternative to modifying catalytic properties of Rubisco is to increase its abundance within C4 plant chloroplasts, which might increase activity and confer a higher carbon assimilation rate. Here, we overexpress the Rubisco large (LS) and small (SS) subunits with the Rubisco assembly chaperone RUBISCO ASSEMBLY FACTOR 1 (RAF1). While overexpression of LS and/or SS had no discernable impact on Rubisco content, addition of RAF1 overexpression resulted in a >30% increase in Rubisco content...
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287948/overexpressing-the-most-abundant-enzyme
#17
Oliver Mueller-Cajar
No abstract text is available yet for this article.
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30287947/kinases-everywhere
#18
Guillaume Tena
No abstract text is available yet for this article.
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30250280/npr1-mediates-a-novel-regulatory-pathway-in-cold-acclimation-by-interacting-with-hsfa1-factors
#19
Ema Olate, José M Jiménez-Gómez, Loreto Holuigue, Julio Salinas
NON-EXPRESSER OF PATHOGENESIS-RELATED GENES 1 (NPR1) is a master regulator of plant response to pathogens that confers immunity through a transcriptional cascade mediated by salicylic acid and TGA transcription factors. Little is known, however, about its implication in plant response to abiotic stress. Here, we provide genetic and molecular evidence supporting the fact that Arabidopsis NPR1 plays an essential role in cold acclimation by regulating cold-induced gene expression independently of salicylic acid and TGA factors...
October 2018: Nature Plants
https://www.readbyqxmd.com/read/30250279/genome-encode-analyses-reveal-the-basis-of-convergent-evolution-of-fleshy-fruit-ripening
#20
Peitao Lü, Sheng Yu, Ning Zhu, Yun-Ru Chen, Biyan Zhou, Yu Pan, David Tzeng, Joao Paulo Fabi, Jason Argyris, Jordi Garcia-Mas, Nenghui Ye, Jianhua Zhang, Donald Grierson, Jenny Xiang, Zhangjun Fei, James Giovannoni, Silin Zhong
Fleshy fruits using ethylene to regulate ripening have developed multiple times in the history of angiosperms, presenting a clear case of convergent evolution whose molecular basis remains largely unknown. Analysis of the fruitENCODE data consisting of 361 transcriptome, 71 accessible chromatin, 147 histone and 45 DNA methylation profiles reveals three types of transcriptional feedback circuits controlling ethylene-dependent fruit ripening. These circuits are evolved from senescence or floral organ identity pathways in the ancestral angiosperms either by neofunctionalisation or repurposing pre-existing genes...
October 2018: Nature Plants
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