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Nature Plants

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https://www.readbyqxmd.com/read/28319110/systemic-nutrient-signalling-on-the-road-for-nitrate
#1
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
#2
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 M√ľnch 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
#3
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
https://www.readbyqxmd.com/read/28319056/shoot-to-root-mobile-polypeptides-involved-in-systemic-regulation-of-nitrogen-acquisition
#4
Yuri Ohkubo, Mina Tanaka, Ryo Tabata, Mari Ogawa-Ohnishi, Yoshikatsu Matsubayashi
Plants uptake nitrogen (N) from the soil mainly in the form of nitrate. However, nitrate is often distributed heterogeneously in natural soil. Plants, therefore, have a systemic long-distance signalling mechanism by which N starvation on one side of the root leads to a compensatory N uptake on the other N-rich side(1,2). This systemic N acquisition response is triggered by a root-to-shoot mobile peptide hormone, C-TERMINALLY ENCODED PEPTIDE (CEP), originating from the N-starved roots(3,4), but the molecular nature of the descending shoot-to-root signal remains elusive...
March 20, 2017: Nature Plants
https://www.readbyqxmd.com/read/28319055/rational-design-of-high-yield-and-superior-quality-rice
#5
Dali Zeng, Zhixi Tian, Yuchun Rao, Guojun Dong, Yaolong Yang, Lichao Huang, Yujia Leng, Jie Xu, Chuan Sun, Guangheng Zhang, Jiang Hu, Li Zhu, Zhenyu Gao, Xingming Hu, Longbiao Guo, Guosheng Xiong, Yonghong Wang, Jiayang Li, Qian Qian
Rice (Oryza sativa L.) is a staple food for more than half of the world's population. To meet the ever-increasing demand for food, because of population growth and improved living standards, world rice production needs to double by 2030(1). The development of new elite rice varieties with high yield and superior quality is challenging for traditional breeding approaches, and new strategies need to be developed. Here, we report the successful development of new elite varieties by pyramiding major genes that significantly contribute to grain quality and yield from three parents over five years...
March 20, 2017: Nature Plants
https://www.readbyqxmd.com/read/28288096/expanded-type-iii-effector-recognition-by-the-zar1-nlr-protein-using-zed1-related-kinases
#6
Derek Seto, Noushin Koulena, Timothy Lo, Alexandra Menna, David S Guttman, Darrell Desveaux
Nucleotide-binding domain and leucine-rich repeat domain-containing (NLR) proteins are sentinels of plant immunity that monitor host proteins for perturbations induced by pathogenic effector proteins. Here we show that the Arabidopsis ZAR1 NLR protein requires the ZRK3 kinase to recognize the Pseudomonas syringae type III effector (T3E) HopF2a. These results support the hypothesis that ZAR1 associates with an expanded ZRK protein family to broaden its effector recognition spectrum.
March 13, 2017: Nature Plants
https://www.readbyqxmd.com/read/28287620/corrigendum-re-evaluating-the-malawian-farm-input-subsidy-programme
#7
Joseph P Messina, Brad G Peter, Sieglinde S Snapp
No abstract text is available yet for this article.
March 13, 2017: Nature Plants
https://www.readbyqxmd.com/read/28287616/lignin-evolution-invasion-of-land
#8
Lei Lei
No abstract text is available yet for this article.
March 13, 2017: Nature Plants
https://www.readbyqxmd.com/read/28263322/re-evaluating-the-malawian-farm-input-subsidy-programme
#9
Joseph P Messina, Brad G Peter, Sieglinde S Snapp
The Malawian Farm Input Subsidy Programme (FISP) has received praise as a proactive policy that has transformed the nation's food security, yet irreconcilable differences exist between maize production estimates distributed by the Food and Agriculture Organization of the United Nations (FAO), the Malawi Ministry of Agriculture and Food Security (MoAFS) and the National Statistical Office (NSO) of Malawi. These differences illuminate yield-reporting deficiencies and the value that alternative, politically unbiased yield estimates could play in understanding policy impacts...
March 6, 2017: Nature Plants
https://www.readbyqxmd.com/read/28263304/surface-charge-dynamics-in-photosynthetic-membranes-and-the-structural-consequences
#10
Sujith Puthiyaveetil, Bart van Oort, Helmut Kirchhoff
The strict stacking of plant photosynthetic membranes into granal structures plays a vital role in energy conversion. The molecular forces that lead to grana stacking, however, are poorly understood. Here we evaluate the interplay between repulsive electrostatic (Fel) and attractive van der Waals (FvdWaals) forces in grana stacking. In contrast to previous reports, we find that the physicochemical balance between attractive and repulsive forces fully explains grana stacking. Extending the force balance analysis to lateral interactions within the oxygen-evolving photosystem II (PSII)-light harvesting complex II (LHCII) supercomplex reveals that supercomplex stability is very sensitive to Fel changes...
March 6, 2017: Nature Plants
https://www.readbyqxmd.com/read/28260795/drought-resistance-spraying-for-yield
#11
Sjef Smeekens
No abstract text is available yet for this article.
March 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28260793/plant-cell-wall-never-too-much-acetate
#12
Henrik V Scheller
No abstract text is available yet for this article.
March 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28260792/genome-editing-the-efficient-tool-crispr-cpf1
#13
Magdy M Mahfouz
No abstract text is available yet for this article.
March 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28260790/tomato-improvement-good-old-flavour
#14
Jun Lyu
No abstract text is available yet for this article.
March 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28260785/the-beauty-of-the-small
#15
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
March 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28260784/oral-vaccines-papaya-salad
#16
Chris Surridge
No abstract text is available yet for this article.
March 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28260783/palaeobotanical-redux-revisiting-the-age-of-the-angiosperms
#17
REVIEW
Patrick S Herendeen, Else Marie Friis, Kaj Raunsgaard Pedersen, Peter R Crane
Angiosperms (flowering plants) are the most diverse of all major lineages of land plants and the dominant autotrophs in most terrestrial ecosystems. Their evolutionary and ecological appearance is therefore of considerable interest and has significant implications for understanding patterns of diversification in other lineages, including insects and other animals. More than half a century ago, influential reviews showed that while angiosperms are richly represented in sediments of Late Cretaceous and younger ages, there are no reliable records of angiosperms from pre-Cretaceous rocks...
March 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28260782/control-of-secondary-cell-wall-patterning-involves-xylan-deacetylation-by-a-gdsl-esterase
#18
Baocai Zhang, Lanjun Zhang, Feng Li, Dongmei Zhang, Xiangling Liu, Hang Wang, Zuopeng Xu, Chengcai Chu, Yihua Zhou
O-acetylation, a ubiquitous modification of cell wall polymers, has striking impacts on plant growth and biomass utilization and needs to be tightly controlled. However, the mechanisms that underpin the control of cell wall acetylation remain elusive. Here, we show a rice brittle leaf sheath1 (bs1) mutant, which contains a lesion in a Golgi-localized GDSL esterase that deacetylates the prominent hemicellulose xylan. Cell wall composition, detailed xylan structure characterization and enzyme kinetics and activity assays on acetylated sugars and xylooligosaccharides demonstrate that BS1 is an esterase that cleaves acetyl moieties from the xylan backbone at O-2 and O-3 positions of xylopyranosyl residues...
March 3, 2017: Nature Plants
https://www.readbyqxmd.com/read/28248316/reducing-pesticide-use-while-preserving-crop-productivity-and-profitability-on-arable-farms
#19
Martin Lechenet, Fabrice Dessaint, Guillaume Py, David Makowski, Nicolas Munier-Jolain
Achieving sustainable crop production while feeding an increasing world population is one of the most ambitious challenges of this century(1). Meeting this challenge will necessarily imply a drastic reduction of adverse environmental effects arising from agricultural activities(2). The reduction of pesticide use is one of the critical drivers to preserve the environment and human health. Pesticide use could be reduced through the adoption of new production strategies(3-5); however, whether substantial reductions of pesticide use are possible without impacting crop productivity and profitability is debatable(6-17)...
March 1, 2017: Nature Plants
https://www.readbyqxmd.com/read/28248315/chlorophagy-preventing-sunburn
#20
Lei Lei
No abstract text is available yet for this article.
March 1, 2017: Nature Plants
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