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Frontiers in Plant Science

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https://www.readbyqxmd.com/read/29326750/integrative-view-of-the-diversity-and-evolution-of-sweet-and-semisweet-sugar-transporters
#1
Baolei Jia, Xiao Feng Zhu, Zhong Ji Pu, Yu Xi Duan, Lu Jiang Hao, Jie Zhang, Li-Qing Chen, Che Ok Jeon, Yuan Hu Xuan
Sugars Will Eventually be Exported Transporter (SWEET) and SemiSWEET are recently characterized families of sugar transporters in eukaryotes and prokaryotes, respectively. SemiSWEETs contain 3 transmembrane helices (TMHs), while SWEETs contain 7. Here, we performed sequence-based comprehensive analyses for SWEETs and SemiSWEETs across the biosphere. In total, 3,249 proteins were identified and ≈60% proteins were found in green plants and Oomycota, which include a number of important plant pathogens. Protein sequence similarity networks indicate that proteins from different organisms are significantly clustered...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326749/introgression-of-the-aegilops-speltoides-su1-ph1-suppressor-into-wheat
#2
Hao Li, Karin R Deal, Ming-Cheng Luo, Wanquan Ji, Assaf Distelfeld, Jan Dvorak
Meiotic pairing between homoeologous chromosomes in polyploid wheat is inhibited by the Ph1 locus on the long arm of chromosome 5 in the B genome. Aegilops speltoides (genomes SS), the closest relative of the progenitor of the wheat B genome, is polymorphic for genetic suppression of Ph1. Using this polymorphism, two major suppressor loci, Su1-Ph1 and Su2-Ph1, have been mapped in Ae. speltoides. Su1-Ph1 is located in the distal, high-recombination region of the long arm of the Ae. speltoides chromosome 3S. Its location and tight linkage to marker Xpsr1205-3S makes Su1-Ph1 a suitable target for introgression into wheat...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326748/pseudomonas-syringae-pv-actinidiae-type-iii-effectors-localized-at-multiple-cellular-compartments-activate-or-suppress-innate-immune-responses-in-nicotiana-benthamiana
#3
Sera Choi, Jay Jayaraman, Cécile Segonzac, Hye-Jee Park, Hanbi Park, Sang-Wook Han, Kee Hoon Sohn
Bacterial phytopathogen type III secreted (T3S) effectors have been strongly implicated in altering the interaction of pathogens with host plants. Therefore, it is useful to characterize the whole effector repertoire of a pathogen to understand the interplay of effectors in plants. Pseudomonas syringae pv. actinidiae is a causal agent of kiwifruit canker disease. In this study, we generated an Agrobacterium-mediated transient expression library of YFP-tagged T3S effectors from two strains of Psa, Psa-NZ V13 and Psa-NZ LV5, in order to gain insight into their mode of action in Nicotiana tabacum and N...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326747/deletion-of-cgld1-impairs-psii-and-increases-singlet-oxygen-tolerance-of-green-alga-chlamydomonas-reinhardtii
#4
Jiale Xing, Peng Liu, Lei Zhao, Fang Huang
The green alga Chlamydomonas reinhardtii is a key model organism for studying photosynthesis and oxidative stress in unicellular eukaryotes. Using a forward genetics approach, we have identified and characterized a mutant x32, which lacks a predicted protein named CGLD1 (Conserved in Green Lineage and Diatom 1) in GreenCut2, under normal and stress conditions. We show that loss of CGLD1 resulted in minimal photoautotrophic growth and PSII activity in the organism. We observed reduced amount of PSII complex and core subunits in the x32 mutant based on blue-native (BN)/PAGE and immunoblot analysis...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326746/stoichiometric-correlation-analysis-principles-of-metabolic-functionality-from-metabolomics-data
#5
Kevin Schwahn, Romina Beleggia, Nooshin Omranian, Zoran Nikoloski
Recent advances in metabolomics technologies have resulted in high-quality (time-resolved) metabolic profiles with an increasing coverage of metabolic pathways. These data profiles represent read-outs from often non-linear dynamics of metabolic networks. Yet, metabolic profiles have largely been explored with regression-based approaches that only capture linear relationships, rendering it difficult to determine the extent to which the data reflect the underlying reaction rates and their couplings. Here we propose an approach termed Stoichiometric Correlation Analysis (SCA) based on correlation between positive linear combinations of log-transformed metabolic profiles...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326745/brassinosteroids-a-promising-option-in-deciphering-remedial-strategies-for-abiotic-stress-tolerance-in-rice
#6
REVIEW
Isha Sharma, Navdeep Kaur, Pratap K Pati
Rice is an important staple crop as it feeds about a half of the earth's population. It is known to be sensitive to a range of abiotic stresses which result in significant decline in crop productivity. Recently, the use of phytohormones for abiotic stress amelioration has generated considerable interest. Plants adapt to various environmental stresses by undergoing series of changes at physiological and molecular levels which are cooperatively modulated by various phytohormones. Brassinosteroids (BRs) are a class of naturally occurring steroidal phytohormones, best known for their role in plant growth and development...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326744/physiological-plasticity-is-important-for-maintaining-sugarcane-growth-under-water-deficit
#7
Paulo E R Marchiori, Eduardo C Machado, Cristina R G Sales, Erick Espinoza-Núñez, José R Magalhães Filho, Gustavo M Souza, Regina C M Pires, Rafael V Ribeiro
The water availability at early phenological stages is critical for crop establishment and sugarcane varieties show differential performance under drought. Herein, we evaluated the relative importance of morphological and physiological plasticity of young sugarcane plants grown under water deficit, testing the hypothesis that high phenotypic plasticity is associated with drought tolerance. IACSP95-5000 is a high yielding genotype and IACSP94-2094 has good performance under water limiting environments. Plants were grown in rhizotrons for 35 days under three water availabilities: high (soil water matric potential [Ψm] higher than -20 kPa); intermediate (Ψm reached -65 and -90 kPa at the end of experimental period) and low (Ψm reached values lower than -150 kPa)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326743/plant-responses-to-abiotic-stress-regulated-by-histone-deacetylases
#8
REVIEW
Ming Luo, Kai Cheng, Yingchao Xu, Songguang Yang, Keqiang Wu
In eukaryotic cells, histone acetylation and deacetylation play an important role in the regulation of gene expression. Histone acetylation levels are modulated by histone acetyltransferases and histone deacetylases (HDACs). Recent studies indicate that HDACs play essential roles in the regulation of gene expression in plant response to environmental stress. In this review, we discussed the recent advance regarding the plant HDACs and their functions in the regulation of abiotic stress responses. The role of HDACs in autophagy was also discussed...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326742/perception-of-salicylic-acid-in-physcomitrella-patens
#9
Yujun Peng, Tongjun Sun, Yuelin Zhang
Salicylic acid (SA) is a key signaling molecule in plant immunity. Two types of SA receptors, NPR1 and NPR3/NPR4, were reported to be involved in the perception of SA in Arabidopsis. SA is also synthesized in the non-vascular moss Physcomitrella patens following pathogen infection. Sequence analysis revealed that there is only one NPR1/NPR3/NPR4-like protein in P. patens. This agrees with the phylogenetic study that showed the divergence of NPR1 and NPR3/NPR4 from the same ancestor during the evolution of higher plants...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326741/two-lysin-motif-receptor-kinases-gh-lyk1-and-gh-lyk2-contribute-to-resistance-against-verticillium-wilt-in-upland-cotton
#10
Zhouhang Gu, Tingli Liu, Bo Ding, Fangfang Li, Qian Wang, Shasha Qian, Fei Ye, Tianzi Chen, Yuwen Yang, Jinyan Wang, Guoliang Wang, Baolong Zhang, Xueping Zhou
Lysin-motif (LysM) receptor kinases (LYKs) play essential roles in recognition of chitin and activation of defense responses against pathogenic fungi in the model plants Arabidopsis and rice. The function of LYKs in non-model plants, however, remains elusive. In the present work, we found that the transcription of two LYK-encoding genes from cotton, Gh-LYK1 and Gh-LYK2, was induced after Verticillium dahliae infection. Virus-induced gene silencing (VIGS) of Gh-LYK1 and Gh-LYK2 in cotton plants compromises resistance to V...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326740/engineered-dwarf-male-sterile-rice-a-promising-genetic-tool-for-facilitating-recurrent-selection-in-rice
#11
Afsana Ansari, Chunlian Wang, Jian Wang, Fujun Wang, Piqing Liu, Ying Gao, Yongchao Tang, Kaijun Zhao
Rice is a crop feeding half of the world's population. With the continuous raise of yield potential via genetic improvement, rice breeding has entered an era where multiple genes conferring complex traits must be efficiently manipulated to increase rice yield further. Recurrent selection is a sound strategy for manipulating multiple genes and it has been successfully performed in allogamous crops. However, the difficulties in emasculation and hand pollination had obstructed efficient use of recurrent selection in autogamous rice...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326739/tomato-reproductive-success-is-equally-affected-by-herbivores-that-induce-or-that-suppress-defenses
#12
Jie Liu, Saioa Legarrea, Merijn R Kant
Herbivory induces plant defenses. These responses are often costly, yet enable plants under attack to reach a higher fitness than they would have reached without these defenses. Spider mites (Tetranychus ssp.) are polyphagous plant-pests. While most strains of the species Tetranychus urticae induce defenses at the expense of their performance, the species Tetranychus evansi suppresses plant defenses and thereby maintains a high performance. Most data indicate that suppression is a mite-adaptive trait. Suppression is characterized by a massive down-regulation of plant gene-expression compared to plants infested with defense-inducing mites as well as compared to control plants, albeit to a lesser extent...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326738/editorial-evolution-of-gene-regulatory-networks-in-plant-development
#13
EDITORIAL
Federico Valverde, Andrew Groover, José M Romero
No abstract text is available yet for this article.
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326737/over-expression-of-arabidopsis-edt1-gene-confers-drought-tolerance-in-alfalfa-medicago-sativa-l
#14
Guangshun Zheng, Cunying Fan, Shaokang Di, Xuemin Wang, Chengbin Xiang, Yongzhen Pang
Alfalfa (Medicago sativa L.) is an important legume forage crop with great economic value. However, as the growth of alfalfa is seriously affected by an inadequate supply of water, drought is probably the major abiotic environmental factor that most severely affects alfalfa production worldwide. In an effort to enhance alfalfa drought tolerance, we transformed the Arabidopsis Enhanced Drought Tolerance 1 (AtEDT1) gene into alfalfa via Agrobacterium-mediated transformation. Compared with wild type plants, drought stress treatment resulted in higher survival rates and biomass, but reduced water loss rates in the transgenic plants...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326736/evolution-of-the-crop-rhizosphere-impact-of-domestication-on-root-exudates-in-tetraploid-wheat-triticum-turgidum-l
#15
Anna Iannucci, Mariagiovanna Fragasso, Romina Beleggia, Franca Nigro, Roberto Papa
Domestication has induced major genetic changes in crop plants to satisfy human needs and as a consequence of adaptation to agroecosystems. This adaptation might have affected root exudate composition, which can influence the interactions in the rhizosphere. Here, using two different soil types (sand, soil), we provide an original example of the impact of domestication and crop evolution on root exudate composition through metabolite profiling of root exudates for a panel of 10 wheat genotypes that correspond to the key steps in domestication of tetraploid wheat (wild emmer, emmer, durum wheat)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326735/discovery-of-consistent-qtls-of-wheat-spike-related-traits-under-nitrogen-treatment-at-different-development-stages
#16
Zhiying Deng, Yong Cui, Qingdian Han, Wenqi Fang, Jifa Li, Jichun Tian
Spike-related traits such as spike length (Sl), fertile spikelet number (Fsn), sterile spikelet number (Ssn), grain number per spike (Gns), and thousand-kernel weight (Tkw) are important factors influencing wheat yield. However, reliably stable markers that can be used for molecular breeding in different environments have not yet been identified. In this study, a double haploid (DH) population was used for quantitative trait locus (QTL) mapping of five spike-related traits under four different nitrogen (N) supply dates in two locations and years...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326734/jungbrunnen1-confers-drought-tolerance-downstream-of-the-hd-zip-i-transcription-factor-athb13
#17
Saghar Ebrahimian-Motlagh, Pamela A Ribone, Venkatesh P Thirumalaikumar, Annapurna D Allu, Raquel L Chan, Bernd Mueller-Roeber, Salma Balazadeh
Low water availability is the major environmental factor limiting growth and productivity of plants and crops and is therefore considered of high importance for agriculture affected by climate change. Identifying regulatory components controlling the response and tolerance to drought stress is thus of major importance. The NAC transcription factor (TF) JUNGBRUNNEN1 (JUB1) from Arabidopsis thaliana extends leaf longevity under non-stress growth conditions, lowers cellular hydrogen peroxide (H2O2) level, and enhances tolerance against heat stress and salinity...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326733/itraq-based-comparative-proteomic-analysis-of-seedling-leaves-of-two-upland-cotton-genotypes-differing-in-salt-tolerance
#18
Wenfang Gong, Feifei Xu, Junling Sun, Zhen Peng, Shoupu He, Zhaoe Pan, Xiongming Du
Cotton yields are greatly reduced under high salinity stress conditions, although cotton is considered a moderately salt-tolerant crop. Understanding at the molecular level how cotton responds to salt stress will help in developing salt tolerant varieties. Here, we combined physiological analysis with isobaric tags for relative and absolute quantitation (iTRAQ)-based proteomics of seedling leaves of 2 genotypes differing in salinity tolerance to 200 mM (18.3 dS/m) NaCl stress. Salt stress produced significant stress symptoms in the sensitive genotype Nan Dan Ba Di Da Hua (N), including lower relative water and chlorophyll contents and higher relative electrolyte leakage and Na+/K+ ratio in leaf samples, compared with those in the tolerant genotype Earlistaple 7 (Z)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326732/exogenous-glycine-nitrogen-enhances-accumulation-of-glycosylated-flavonoids-and-antioxidant-activity-in-lettuce-lactuca-sativa-l
#19
Xiao Yang, Xiaoxian Cui, Li Zhao, Doudou Guo, Lei Feng, Shiwei Wei, Chao Zhao, Danfeng Huang
Glycine, the simplest amino acid in nature and one of the most abundant free amino acids in soil, is regarded as a model nutrient in organic nitrogen studies. To date, many studies have focused on the uptake, metabolism and distribution of organic nitrogen in plants, but few have investigated the nutritional performance of plants supplied with organic nitrogen. Lettuce (Lactuca sativa L.), one of the most widely consumed leafy vegetables worldwide, is a significant source of antioxidants and bioactive compounds such as polyphenols, ascorbic acid and tocopherols...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29326731/mapping-and-identifying-a-candidate-gene-bnmfs-for-female-male-sterility-through-whole-genome-resequencing-and-rna-seq-in-rapeseed-brassica-napus-l
#20
Changcai Teng, Dezhi Du, Lu Xiao, Qinglan Yu, Guoxia Shang, Zhigang Zhao
In oilseed crops, carpel and stamen development play vital roles in pollination and rapeseed yield, but the genetic mechanisms underlying carpel and stamen development remain unclear. Herein, a male- and female-sterile mutant was obtained in offspring of a (Brassica napus cv. Qingyou 14) × (Qingyou 14 × B. rapa landrace Dahuang) cross. Subsequently, F2-F9 populations were generated through selfing of the heterozygote plants among the progeny of each generation. The male- and female-sterility exhibited stable inheritance in successive generations and was controlled by a recessive gene...
2017: Frontiers in Plant Science
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