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Frontiers in Plant Science

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https://www.readbyqxmd.com/read/28337215/root-adaptive-responses-to-aluminum-treatment-revealed-by-rna-seq-in-two-citrus-species-with-different-aluminum-tolerance
#1
Peng Guo, Yi-Ping Qi, Lin-Tong Yang, Ning-Wei Lai, Xin Ye, Yi Yang, Li-Song Chen
Seedlings of aluminum (Al)-tolerant Citrus sinensis and Al-intolerant Citrus grandis were fertigated daily with nutrient solution containing 0 and 1.0 mM AlCl3●6H2O for 18 weeks. The Al-induced decreases of biomass and root total soluble proteins only occurred in C. grandis, demonstrating that C. sinensis had higher Al-tolerance than C. grandis. Under Al-treatment, C. sinensis roots secreted more citrate and malate than C. grandis ones; less Al was accumulated in C. sinenis than in C. grandis leaves. The Al-induced reduction of phosphorus was lesser in C...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28337214/crystal-structure-of-the-chloroplastic-oxoene-reductase-ceqorh-from-arabidopsis-thaliana
#2
Sarah Mas Y Mas, Gilles Curien, Cécile Giustini, Norbert Rolland, Jean-Luc Ferrer, David Cobessi
Enzymatic and non-enzymatic peroxidation of polyunsaturated fatty acids give rise to accumulation of aldehydes, ketones, and α,β-unsaturated carbonyls of various lengths, known as oxylipins. Oxylipins with α,β-unsaturated carbonyls are reactive electrophile species and are toxic. Cells have evolved several mechanisms to scavenge reactive electrophile oxylipins and decrease their reactivity such as by coupling with glutathione, or by reduction using NAD(P)H-dependent reductases and dehydrogenases of various substrate specificities...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28337213/root-branching-is-a-leading-root-trait-of-the-plant-economics-spectrum-in-temperate-trees
#3
Rebecca Liese, Katrin Alings, Ina C Meier
Global vegetation models use conceived relationships between functional traits to simulate ecosystem responses to environmental change. In this context, the concept of the leaf economics spectrum (LES) suggests coordinated leaf trait variation, and separates species which invest resources into short-lived leaves with a high expected energy return rate from species with longer-lived leaves and slower energy return. While it has been assumed that being fast (acquisitive) or slow (conservative) is a general feature for all organ systems, the translation of the LES into a root economics spectrum (RES) for tree species has been hitherto inconclusive...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28337212/identification-of-norway-spruce-myb-bhlh-wdr-transcription-factor-complex-members-linked-to-regulation-of-the-flavonoid-pathway
#4
Miguel Nemesio-Gorriz, Peter B Blair, Kerstin Dalman, Almuth Hammerbacher, Jenny Arnerup, Jan Stenlid, Shahid M Mukhtar, Malin Elfstrand
Transcription factors (TFs) forming MYB-bHLH-WDR complexes are known to regulate the biosynthesis of specialized metabolites in angiosperms through an intricate network. These specialized metabolites participate in a wide range of biological processes including plant growth, development, reproduction as well as in plant immunity. Studying the regulation of their biosynthesis is thus essential. While MYB (TFs) have been previously shown to control specialized metabolism (SM) in gymnosperms, the identity of their partners, in particular bHLH or WDR members, has not yet been revealed...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28337211/nutritional-biophysical-and-physiological-characteristics-of-wild-rocket-genotypes-as-affected-by-soilless-cultivation-system-salinity-level-of-nutrient-solution-and-growing-period
#5
Anna Bonasia, Corrado Lazzizera, Antonio Elia, Giulia Conversa
With the aim of defining the best management of nutrient solution (NS) in a soilless system for obtaining high quality baby-leaf rocket, the present study focuses on two wild rocket genotypes ("Nature" and "Naturelle"), grown in a greenhouse under two Southern Italy growing conditions-autumn-winter (AW) and winter-spring (WS)-using two soilless cultivation systems (SCS)-at two electrical conductivity values (EC) of NS. The SCSs used were the Floating System (FS) and Ebb and Flow System (EFS) and the EC values were 2...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28337210/assessing-wheat-traits-by-spectral-reflectance-do-we-really-need-to-focus-on-predicted-trait-values-or-directly-identify-the-elite-genotypes-group
#6
Miguel Garriga, Sebastián Romero-Bravo, Félix Estrada, Alejandro Escobar, Iván A Matus, Alejandro Del Pozo, Cesar A Astudillo, Gustavo A Lobos
Phenotyping, via remote and proximal sensing techniques, of the agronomic and physiological traits associated with yield potential and drought adaptation could contribute to improvements in breeding programs. In the present study, 384 genotypes of wheat (Triticum aestivum L.) were tested under fully irrigated (FI) and water stress (WS) conditions. The following traits were evaluated and assessed via spectral reflectance: Grain yield (GY), spikes per square meter (SM2), kernels per spike (KPS), thousand-kernel weight (TKW), chlorophyll content (SPAD), stem water soluble carbohydrate concentration and content (WSC and WSCC, respectively), carbon isotope discrimination (Δ(13)C), and leaf area index (LAI)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28337209/transcriptional-responses-of-chilean-quinoa-chenopodium-quinoa-willd-under-water-deficit-conditions-uncovers-aba-independent-expression-patterns
#7
Andrea Morales, Andres Zurita-Silva, Jonathan Maldonado, Herman Silva
HIGHLIGHTS R49 genotype displayed best performance on selected physiological parameters and highest tolerance to drought.R49 drought over-represented transcripts has exhibited 19% of genes (306 contigs) that presented no homology to published databases.Expression pattern for canonical responses to drought such as ABA biosynthesis and other genes induced in response to drought were assessed by qPCR. Global freshwater shortage is one of the biggest challenges of our time, often associated to misuse, increased consumption demands and the effects of climate change, paralleled with the desertification of vast areas...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28331486/corrigendum-transcriptome-analysis-of-hamelia-patens-rubiaceae-anthers-reveals-candidate-genes-for-tapetum-and-pollen-wall-development
#8
Lin Yue, David Twell, Yanfeng Kuang, Jingping Liao, Xianqiang Zhou
[This corrects the article on p. 1991 in vol. 7, PMID: 28119704.].
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326097/different-proteome-profiles-between-male-and-female-populus-cathayana-exposed-to-uv-b-radiation
#9
Yunxiang Zhang, Lihua Feng, Hao Jiang, Yuanbin Zhang, Sheng Zhang
With increasing altitude, solar UV-B radiation is enhanced. Based on the phenomenon of male-biased sex ratio of Populus cathayana Rehder in high altitude alpine area, we hypothesized that males have a faster and more sophisticated responsive mechanism to high UV-B radiation than that of females. Our previous studies have shown sexually different responses to high UV-B radiation were existed in P. cathayana at the morphological, physiological, and transcriptomic levels. However, the responses at the proteomic level remain unclear...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326096/tagw2-a-good-reflection-of-wheat-polyploidization-and-evolution
#10
Lin Qin, Junjie Zhao, Tian Li, Jian Hou, Xueyong Zhang, Chenyang Hao
Hexaploid wheat consists of three subgenomes, namely, A, B, and D. These well-characterized ancestral genomes also exist at the diploid and tetraploid levels, thereby rendering wheat as a good model species for studying polyploidization. Here, we performed intra- and inter-species comparative analyses of wheat and its relatives to dissect polymorphism and differentiation of the TaGW2 genes. Our results showed that genetic diversity of TaGW2 decreased with progression from the diploids to tetraploids and hexaploids...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326095/potential-of-legume-brassica-intercrops-for-forage-production-and-green-manure-encouragements-from-a-temperate-southeast-european-environment
#11
REVIEW
Ana M Jeromela, Aleksandar M Mikić, Svetlana Vujić, Branko Ćupina, Đorđe Krstić, Aleksandra Dimitrijević, Sanja Vasiljević, Vojislav Mihailović, Sandra Cvejić, Dragana Miladinović
Legumes and brassicas have much in common: importance in agricultural history, rich biodiversity, numerous forms of use, high adaptability to diverse farming designs, and various non-food applications. Rare available resources demonstrate intercropping legumes and brassicas as beneficial to both, especially for the latter, profiting from better nitrogen nutrition. Our team aimed at designing a scheme of the intercrops of autumn- and spring-sown annual legumes with brassicas for ruminant feeding and green manure, and has carried out a set of field trials in a temperate Southeast European environment and during the past decade, aimed at assessing their potential for yields of forage dry matter and aboveground biomass nitrogen and their economic reliability via land equivalent ratio...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326094/selection-and-validation-of-reference-genes-for-accurate-rt-qpcr-data-normalization-in-coffea-spp-under-a-climate-changes-context-of-interacting-elevated-co2-and-temperature
#12
Madlles Q Martins, Ana S Fortunato, Weverton P Rodrigues, Fábio L Partelli, Eliemar Campostrini, Fernando C Lidon, Fábio M DaMatta, José C Ramalho, Ana I Ribeiro-Barros
World coffee production has faced increasing challenges associated with ongoing climatic changes. Several studies, which have been almost exclusively based on temperature increase, have predicted extensive reductions (higher than half by 2,050) of actual coffee cropped areas. However, recent studies showed that elevated [CO2] can strongly mitigate the negative impacts of heat stress at the physiological and biochemical levels in coffee leaves. In addition, it has also been shown that coffee genotypes can successfully cope with temperatures above what has been traditionally accepted...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326093/the-complete-chloroplast-genome-of-wild-rice-oryza-minuta-and-its-comparison-to-related-species
#13
Sajjad Asaf, Muhammad Waqas, Abdul L Khan, Muhammad A Khan, Sang-Mo Kang, Qari M Imran, Raheem Shahzad, Saqib Bilal, Byung-Wook Yun, In-Jung Lee
Oryza minuta, a tetraploid wild relative of cultivated rice (family Poaceae), possesses a BBCC genome and contains genes that confer resistance to bacterial blight (BB) and white-backed (WBPH) and brown (BPH) plant hoppers. Based on the importance of this wild species, this study aimed to understand the phylogenetic relationships of O. minuta with other Oryza species through an in-depth analysis of the composition and diversity of the chloroplast (cp) genome. The analysis revealed a cp genome size of 135,094 bp with a typical quadripartite structure and consisting of a pair of inverted repeats separated by small and large single copies, 139 representative genes, and 419 randomly distributed microsatellites...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326092/a-novel-soybean-erf-transcription-factor-gmerf113-increases-resistance-to-phytophthora-sojae-infection-in-soybean
#14
Yuanling Zhao, Xin Chang, Dongyue Qi, Lidong Dong, Guangjin Wang, Sujie Fan, Liangyu Jiang, Qun Cheng, Xi Chen, Dan Han, Pengfei Xu, Shuzhen Zhang
Phytophthora root and stem rot of soybean caused by the oomycete Phytophthora sojae, is a destructive disease worldwide. Ethylene response factors (ERFs) play important roles in regulating plant biotic and abiotic stress tolerance. In this study, a new ERF gene, GmERF113, was isolated from the highly resistant soybean 'Suinong 10.' Sequence analysis suggested that the protein encoded by GmERF113 contained a conserved AP2/ERF domain of 58 amino acid and belonged to the B-4 subgroup of the ERF subfamily. Expression of GmERF113 was significantly induced by P...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326091/generation-of-high-amylose-rice-through-crispr-cas9-mediated-targeted-mutagenesis-of-starch-branching-enzymes
#15
Yongwei Sun, Guiai Jiao, Zupei Liu, Xin Zhang, Jingying Li, Xiuping Guo, Wenming Du, Jinlu Du, Frédéric Francis, Yunde Zhao, Lanqin Xia
Cereals high in amylose content (AC) and resistant starch (RS) offer potential health benefits. Previous studies using chemical mutagenesis or RNA interference have demonstrated that starch branching enzyme (SBE) plays a major role in determining the fine structure and physical properties of starch. However, it remains a challenge to control starch branching in commercial lines. Here, we use CRISPR/Cas9 technology to generate targeted mutagenesis in SBEI and SBEIIb in rice. The frequencies of obtained homozygous or bi-allelic mutant lines with indels in SBEI and SBEIIb in T0 generation were from 26...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326090/vaerd15-a-transcription-factor-gene-associated-with-cold-tolerance-in-chinese-wild-vitis-amurensis
#16
Dongdong Yu, Lihua Zhang, Kai Zhao, Ruxuan Niu, Huan Zhai, Jianxia Zhang
Early responsive to dehydration (ERD) genes can be rapidly induced to counteract abiotic stresses, such as drought, low temperatures or high salinities. Here, we report on an ERD gene (VaERD15) related to cold tolerance from Chinese wild Vitis amurensis accession 'Heilongjiang seedling'. The full-length VaERD15 cDNA is 685 bp, including a 66 bp 5'-untranslated region (UTR), a 196 bp 3'-UTR region and a 423 bp open reading frame encoding 140 amino acids. The VaERD15 protein shares a high amino acid sequence similarity with ERD15 of Arabidopsis thaliana...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326089/dynamic-regulation-of-auxin-response-during-rice-development-revealed-by-newly-established-hormone-biosensor-markers
#17
Jing Yang, Zheng Yuan, Qingcai Meng, Guoqiang Huang, Christophe Périn, Charlotte Bureau, Anne-Cécile Meunier, Mathieu Ingouff, Malcolm J Bennett, Wanqi Liang, Dabing Zhang
The hormone auxin is critical for many plant developmental processes. Unlike the model eudicot plant Arabidopsis (Arabidopsis thaliana), auxin distribution and signaling in rice tissues has not been systematically investigated due to the absence of suitable auxin response reporters. In this study we observed the conservation of auxin signaling components between Arabidopsis and model monocot crop rice (Oryza sativa), and generated complementary types of auxin biosensor constructs, one derived from the Aux/IAA-based biosensor DII-VENUS but constitutively driven by maize ubiquitin-1 promoter, and the other termed DR5-VENUS in which a synthetic auxin-responsive promoter (DR5rev ) was used to drive expression of the yellow fluorescent protein (YFP)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326088/temperature-effects-on-biomass-and-regeneration-of-vegetation-in-a-geothermal-area
#18
Abdul Nishar, Martin K-F Bader, Eoin J O'Gorman, Jieyu Deng, Barbara Breen, Sebastian Leuzinger
Understanding the effects of increasing temperature is central in explaining the effects of climate change on vegetation. Here, we investigate how warming affects vegetation regeneration and root biomass and if there is an interactive effect of warming with other environmental variables. We also examine if geothermal warming effects on vegetation regeneration and root biomass can be used in climate change experiments. Monitoring plots were arranged in a grid across the study area to cover a range of soil temperatures...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326087/arabidopsis-nac-transcription-factor-jungbrunnen1-exerts-conserved-control-over-gibberellin-and-brassinosteroid-metabolism-and-signaling-genes-in-tomato
#19
Sara Shahnejat-Bushehri, Annapurna D Allu, Nikolay Mehterov, Venkatesh P Thirumalaikumar, Saleh Alseekh, Alisdair R Fernie, Bernd Mueller-Roeber, Salma Balazadeh
The Arabidopsis thaliana NAC transcription factor JUNGBRUNNEN1 (AtJUB1) regulates growth by directly repressing GA3ox1 and DWF4, two key genes involved in gibberellin (GA) and brassinosteroid (BR) biosynthesis, respectively, leading to GA and BR deficiency phenotypes. AtJUB1 also reduces the expression of PIF4, a bHLH transcription factor that positively controls cell elongation, while it stimulates the expression of DELLA genes, which are important repressors of growth. Here, we extend our previous findings by demonstrating that AtJUB1 induces similar GA and BR deficiency phenotypes and changes in gene expression when overexpressed in tomato (Solanum lycopersicum)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28326086/electromagnetic-field-seems-to-not-influence-transcription-via-ctct-motif-in-three-plant-promoters
#20
Dariusz Sztafrowski, Anna Aksamit-Stachurska, Kamil Kostyn, Paweł Mackiewicz, Marcin Łukaszewicz
It was proposed that magnetic fields (MFs) can influence gene transcription via CTCT motif located in human HSP70 promoter. To check the universality of this mechanism, we estimated the potential role of this motif on plant gene transcription in response to MFs using both bioinformatics and experimental studies. We searched potential promoter sequences (1000 bp upstream) in the potato Solanum tuberosum and thale cress Arabidopsis thaliana genomes for the CTCT sequence. The motif was found, on average, 3.6 and 4...
2017: Frontiers in Plant Science
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