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Nature Plants

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https://www.readbyqxmd.com/read/28418381/sparse-panicle1-is-required-for-inflorescence-development-in-setaria-viridis-and-maize
#1
Pu Huang, Hui Jiang, Chuanmei Zhu, Kerrie Barry, Jerry Jenkins, Laura Sandor, Jeremy Schmutz, Mathew S Box, Elizabeth A Kellogg, Thomas P Brutnell
Setaria viridis is a rapid-life-cycle model panicoid grass. To identify genes that may contribute to inflorescence architecture and thus have the potential to influence grain yield in related crops such as maize, we conducted an N-nitroso-N-methylurea (NMU) mutagenesis of S. viridis and screened for visible inflorescence mutant phenotypes. Of the approximately 2,700 M2 families screened, we identified four recessive sparse panicle mutants (spp1-spp4) characterized by reduced and uneven branching of the inflorescence...
April 18, 2017: Nature Plants
https://www.readbyqxmd.com/read/28418378/polysaccharide-structure-a-hint-from-gut-bacteria
#2
Lei Lei
No abstract text is available yet for this article.
April 18, 2017: Nature Plants
https://www.readbyqxmd.com/read/28418376/a-circrna-from-sepallata3-regulates-splicing-of-its-cognate-mrna-through-r-loop-formation
#3
Vanessa M Conn, Véronique Hugouvieux, Aditya Nayak, Stephanie A Conos, Giovanna Capovilla, Gökhan Cildir, Agnès Jourdain, Vinay Tergaonkar, Markus Schmid, Chloe Zubieta, Simon J Conn
Circular RNAs (circRNAs) are a diverse and abundant class of hyper-stable, non-canonical RNAs that arise through a form of alternative splicing (AS) called back-splicing. These single-stranded, covalently-closed circRNA molecules have been identified in all eukaryotic kingdoms of life(1), yet their functions have remained elusive. Here, we report that circRNAs can be used as bona fide biomarkers of functional, exon-skipped AS variants in Arabidopsis, including in the homeotic MADS-box transcription factor family...
April 18, 2017: Nature Plants
https://www.readbyqxmd.com/read/28394312/two-mechanisms-for-dissipation-of-excess-light-in-monomeric-and-trimeric-light-harvesting-complexes
#4
Luca Dall'Osto, Stefano Cazzaniga, Mauro Bressan, David Paleček, Karel Židek, Krishna K Niyogi, Graham R Fleming, Donatas Zigmantas, Roberto Bassi
Oxygenic photoautotrophs require mechanisms for rapidly matching the level of chlorophyll excited states from light harvesting with the rate of electron transport from water to carbon dioxide. These photoprotective reactions prevent formation of reactive excited states and photoinhibition. The fastest response to excess illumination is the so-called non-photochemical quenching which, in higher plants, requires the luminal pH sensor PsbS and other yet unidentified components of the photosystem II antenna. Both trimeric light-harvesting complex II (LHCII) and monomeric LHC proteins have been indicated as site(s) of the heat-dissipative reactions...
April 10, 2017: Nature Plants
https://www.readbyqxmd.com/read/28394311/climate-change-variance-in-crop-yields
#5
Ryan Scarrow
No abstract text is available yet for this article.
April 10, 2017: Nature Plants
https://www.readbyqxmd.com/read/28394310/gw5-acts-in-the-brassinosteroid-signalling-pathway-to-regulate-grain-width-and-weight-in-rice
#6
Jiafan Liu, Jun Chen, Xiaoming Zheng, Fuqing Wu, Qibing Lin, Yueqin Heng, Peng Tian, ZhiJun Cheng, Xiaowen Yu, Kunneng Zhou, Xin Zhang, Xiuping Guo, Jiulin Wang, Haiyang Wang, Jianmin Wan
Grain size is a major determinant of grain yield in cereal crops. qSW5/GW5, which exerts the greatest effect on rice grain width and weight, was fine-mapped to a 2,263-bp/21-kb genomic region containing a 1,212-bp deletion, respectively. Here, we show that a gene encoding a calmodulin binding protein, located ∼5 kb downstream of the 1,212-bp deletion, corresponds to qSW5/GW5. GW5 is expressed in various rice organs, with highest expression level detected in young panicles. We provide evidence that the 1,212-bp deletion affects grain width most likely through influencing the expression levels of GW5...
April 10, 2017: Nature Plants
https://www.readbyqxmd.com/read/28394309/morf9-increases-the-rna-binding-activity-of-pls-type-pentatricopeptide-repeat-protein-in-plastid-rna-editing
#7
Junjie Yan, Qunxia Zhang, Zeyuan Guan, Qiang Wang, Li Li, Fengying Ruan, Rongcheng Lin, Tingting Zou, Ping Yin
RNA editing is a post-transcriptional process that modifies the genetic information on RNA molecules. In flowering plants, RNA editing usually alters cytidine to uridine in plastids and mitochondria. The PLS-type pentatricopeptide repeat (PPR) protein and the multiple organellar RNA editing factor (MORF, also known as RNA editing factor interacting protein (RIP)) are two types of key trans-acting factors involved in this process. However, how they cooperate with one another remains unclear. Here, we have characterized the interactions between a designer PLS-type PPR protein (PLS)3PPR and MORF9, and found that RNA-binding activity of (PLS)3PPR is drastically increased on MORF9 binding...
April 10, 2017: Nature Plants
https://www.readbyqxmd.com/read/28383073/remote-phenotyping-raman-reveals-stress
#8
Chris Surridge
No abstract text is available yet for this article.
April 6, 2017: Nature Plants
https://www.readbyqxmd.com/read/28383072/a-week-in-the-plant-life
#9
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
April 6, 2017: Nature Plants
https://www.readbyqxmd.com/read/28383071/soybean-genetics-adapting-to-the-tropics
#10
Jun Lyu
No abstract text is available yet for this article.
April 6, 2017: Nature Plants
https://www.readbyqxmd.com/read/28383070/agrobiodiversity-and-a-sustainable-food-future
#11
Karl S Zimmerer, Stef de Haan
No abstract text is available yet for this article.
April 6, 2017: Nature Plants
https://www.readbyqxmd.com/read/28383069/grass-stomata-development-mute-communication
#12
Guillaume Tena
No abstract text is available yet for this article.
April 6, 2017: Nature Plants
https://www.readbyqxmd.com/read/28383068/flowering-time-regulation-agrochemical-control-of-flowering
#13
Christian Jung
No abstract text is available yet for this article.
April 6, 2017: Nature Plants
https://www.readbyqxmd.com/read/28368386/a-mechanism-for-water-splitting-and-oxygen-production-in-photosynthesis
#14
James Barber
Sunlight is absorbed and converted to chemical energy by photosynthetic organisms. At the heart of this process is the most fundamental reaction on Earth, the light-driven splitting of water into its elemental constituents. In this way molecular oxygen is released, maintaining an aerobic atmosphere and creating the ozone layer. The hydrogen that is released is used to convert carbon dioxide into the organic molecules that constitute life and were the origin of fossil fuels. Oxidation of these organic molecules, either by respiration or combustion, leads to the recombination of the stored hydrogen with oxygen, releasing energy and reforming water...
April 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28346449/desiccation-tolerance-seedy-origins-of-resurrection
#15
Robert VanBuren
No abstract text is available yet for this article.
March 27, 2017: Nature Plants
https://www.readbyqxmd.com/read/28346448/a-footprint-of-desiccation-tolerance-in-the-genome-of-xerophyta-viscosa
#16
Maria-Cecília D Costa, Mariana A S Artur, Julio Maia, Eef Jonkheer, Martijn F L Derks, Harm Nijveen, Brett Williams, Sagadevan G Mundree, José M Jiménez-Gómez, Thamara Hesselink, Elio G W M Schijlen, Wilco Ligterink, Melvin J Oliver, Jill M Farrant, Henk W M Hilhorst
Desiccation tolerance is common in seeds and various other organisms, but only a few angiosperm species possess vegetative desiccation tolerance. These 'resurrection species' may serve as ideal models for the ultimate design of crops with enhanced drought tolerance. To understand the molecular and genetic mechanisms enabling vegetative desiccation tolerance, we produced a high-quality whole-genome sequence for the resurrection plant Xerophyta viscosa and assessed transcriptome changes during its dehydration...
March 27, 2017: Nature Plants
https://www.readbyqxmd.com/read/28346447/synthetic-control-of-flowering-in-rice-independent-of-the-cultivation-environment
#17
Ryo Okada, Yasue Nemoto, Naokuni Endo-Higashi, Takeshi Izawa
For genetically homogeneous crops, the timing of flowering is determined largely by the cultivation environment and is strongly associated with the yield and quality of the harvest(1). Flowering time and other agronomical traits are often tightly correlated, which can lead to difficulty excluding the effects of flowering time when evaluating the characteristics of different genetic varieties(2). Here, we describe the development of transgenic rice plants whose flowering time can be controlled by specific agrochemicals...
March 27, 2017: Nature Plants
https://www.readbyqxmd.com/read/28319110/systemic-nutrient-signalling-on-the-road-for-nitrate
#18
Sandrine Ruffel, Alain Gojon
No abstract text is available yet for this article.
March 20, 2017: Nature Plants
https://www.readbyqxmd.com/read/28319082/passive-phloem-loading-and-long-distance-transport-in-a-synthetic-tree-on-a-chip
#19
Jean Comtet, Kaare H Jensen, Robert Turgeon, Abraham D Stroock, A E Hosoi
Vascular plants rely on differences in osmotic pressure to export sugars from regions of synthesis (mature leaves) to sugar sinks (roots, fruits). In this process, known as Münch pressure flow, the loading of sugars from photosynthetic cells to the export conduit (the phloem) is crucial, as it sets the pressure head necessary to power long-distance transport. Whereas most herbaceous plants use active mechanisms to increase phloem sugar concentration above that of the photosynthetic cells, in most tree species, for which transport distances are largest, loading seems, counterintuitively, to occur by means of passive symplastic diffusion from the mesophyll to the phloem...
March 20, 2017: Nature Plants
https://www.readbyqxmd.com/read/28319057/the-poly-a-tail-blocks-rdr6-from-converting-self-mrnas-into-substrates-for-gene-silencing
#20
Kyungmin Baeg, Hiro-Oki Iwakawa, Yukihide Tomari
It remains unclear how post-transcriptional gene silencing (PTGS) in plants discriminates aberrant RNAs from canonical messenger RNAs (mRNAs). The key step of plant PTGS is the conversion of aberrant RNAs into double-stranded RNAs by RNA-DEPENDENT RNA POLYMERASE6 (RDR6). Here, we show that RDR6 itself selects aberrant poly(A)-less mRNAs over canonical polyadenylated mRNAs as templates at the initiation step of complementary strand synthesis. This mechanism can be viewed as an innate safeguard against 'self-attack' by PTGS...
March 20, 2017: Nature Plants
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