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Plant Cell Reports

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https://www.readbyqxmd.com/read/28523445/ptrmyb57-contributes-to-the-negative-regulation-of-anthocyanin-and-proanthocyanidin-biosynthesis-in-poplar
#1
Shuzhen Wan, Chaofeng Li, Xiaodong Ma, Keming Luo
A novel R2R3 MYB transcription factor PtrMYB57 interacted with bHLH131 and PtrTTG1 to form the MBW complex and negatively regulated the biosynthesis of both anthocyanins and PAs in poplar. R2R3-MYB transcription factors (TFs) are important regulators of secondary metabolite biosynthesis in woody species. A series of R2R3-MYB TFs involved in anthocyanin and proanthocyanidin (PA) biosynthesis have been identified in poplar. In this study, we report the identification and characterization of a subgroup 4 MYB member PtrMYB57, which contains a repressor domain (LxLxL) at the C-terminal end...
May 18, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28510781/5-azacytidine-mediated-reactivation-of-silenced-transgenes-in-potato-solanum-tuberosum-at-the-whole-plant-level
#2
Dimitrij Tyč, Eva Nocarová, Lenka Sikorová, Lukáš Fischer
Transient 5-azacytidine treatment of leaf explants from potato plants with transcriptionally silenced transgenes allows de novo regeneration of plants with restored transgene expression at the whole plant level. Transgenes introduced into plant genomes frequently become silenced either at the transcriptional or the posttranscriptional level. Transcriptional silencing is usually associated with DNA methylation in the promoter region. Treatments with inhibitors of maintenance DNA methylation were previously shown to allow reactivation of transcriptionally silenced transgenes in single cells or tissues, but not at the whole plant level...
May 16, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28508121/overexpression-of-smmyb9b-enhances-tanshinone-concentration-in-salvia-miltiorrhiza-hairy-roots
#3
Jingxian Zhang, Lubin Zhou, Xiaoyu Zheng, Jinjia Zhang, Li Yang, Ronghui Tan, Shujuan Zhao
A Salvia miltiorrhiza R2R3-MYB gene, SmMYB9b , has been cloned and characterized. Overexpression of SmMYB9b resulted in a significant improvement of tanshinones, the lipophilic active ingredients in danshen hairy roots. Plant R2R3-MYB transcription factors play important roles in various physiological and biochemical processes. Danshen (Salvia miltiorrhiza bunge) is a valuable medicinal herb with tanshinones and salvianolic acids as the principal bioactive ingredients. A number of putative R2R3-MYB transcription factors have been identified in the plant, but their function remains to be studied...
May 15, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28502056/overexpression-of-the-nitrate-transporter-osnrt2-3b-improves-rice-phosphorus-uptake-and-translocation
#4
Huimin Feng, Bin Li, Yang Zhi, Jingguang Chen, Ran Li, Xiudong Xia, Guohua Xu, Xiaorong Fan
Overexpression of OsNRT2.3b in rice can increase Pi uptake and accumulation through advanced root system, enhanced OsPT and OsPHR genes expression, and the phloem pH homeostasis. Nitrogen (N) and phosphorus (P) are two essential macronutrients for plants. Overexpression of the rice nitrate transporter, OsNRT2.3b, can improve rice grain yield and nitrogen use efficiency (NUE). Here, OsNRT2.3b overexpression resulted in increased grain yield, straw yield, and grain:straw ratio, accompanied by increased P concentrations in the leaf blade, leaf sheath, culm, and unfilled rice hulls...
May 13, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28484792/the-stay-green-trait-and-phytohormone-signaling-networks-in-plants-under-heat-stress
#5
REVIEW
Mostafa Abdelrahman, Magdi El-Sayed, Sudisha Jogaiah, David J Burritt, Lam-Son Phan Tran
The increasing demand for food and the heavy yield losses in primary crops due to global warming mean that there is an urgent need to improve food security. Therefore, understanding how plants respond to heat stress and its consequences, such as drought and increased soil salinity, has received much attention in plant science community. Plants exhibit stress tolerance, escape or avoidance via adaptation and acclimatization mechanisms. These mechanisms rely on a high degree of plasticity in their cellular metabolism, in which phytohormones play an important role...
May 8, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28466187/water-wisteria-as-an-ideal-plant-to-study-heterophylly-in-higher-aquatic-plants
#6
Gaojie Li, Shiqi Hu, Jingjing Yang, Elizabeth A Schultz, Kurtis Clarke, Hongwei Hou
The semi-aquatic plant Water-Wisteria is suggested as a new model to study heterophylly due to its many advantages and typical leaf phenotypic plasticity in response to environmental factors and phytohormones. Water-Wisteria, Hygrophila difformis (Acanthaceae), is a fast growing semi-aquatic plant that exhibits a variety of leaf shapes, from simple leaves to highly branched compound leaves, depending on the environment. The phenomenon by which leaves change their morphology in response to environmental conditions is called heterophylly...
May 2, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28466186/establishment-of-a-gene-function-analysis-system-for-the-euhalophyte-salicornia-europaea-l
#7
Fang Tai, Sulian Lv, Ping Jiang, Jinhui Wang, Juanjuan Feng, Yinxin Li
A Salicornia europaea L. in vitro cell transformation system was developed and further applied to SeNHX1 function investigation. The exploration of salt-tolerant genes from halophyte has seriously been limited by the lack of self-dependent transformation system. Here, an Agrobacterium tumefaciens-mediated in vitro cell transformation system of euhalophyte Salicornia europaea L. was developed. Calli derived from hypocotyl of S. europaea were co-cultured for 3 days with Agrobacterium at OD600 ranging from 1...
May 2, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28456843/dynamic-nucleolar-activity-in-wheat%C3%A2-%C3%A3-%C3%A2-aegilops-hybrids-evidence-of-c-genome-dominance
#8
Ghader Mirzaghaderi, Zinat Abdolmalaki, Mohsen Zohouri, Zeinab Moradi, Annaliese S Mason
NOR loci of C-subgenome are dominant in wheat × Aegilops interspecific hybrids, which may have evolutionary implications for wheat group genome dynamics and evolution. After interspecific hybridisation, some genes are often expressed from only one of the progenitor species, shaping subsequent allopolyploid genome evolution processes. A well-known example is nucleolar dominance, i.e. the formation of cell nucleoli from chromosomes of only one parental species. We studied nucleolar organizing regions (NORs) in diploid Aegilops markgrafii (syn: Ae...
April 29, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28455764/heterologous-expression-of-three-camellia-sinensis-small-heat-shock-protein-genes-confers-temperature-stress-tolerance-in-yeast-and-arabidopsis-thaliana
#9
Mingle Wang, Zhongwei Zou, Qinghui Li, Huahong Xin, Xujun Zhu, Xuan Chen, Xinghui Li
CsHSP17.7, CsHSP18.1, and CsHSP21.8 expressions are induced by heat and cold stresses, and CsHSP overexpression confers tolerance to heat and cold stresses in transgenic Pichia pastoris and Arabidopsis thaliana. Small heat shock proteins (sHSPs) are crucial for protecting plants against biotic and abiotic stresses, especially heat stress. However, knowledge concerning the functions of Camellia sinensis sHSP in heat and cold stresses remains poorly understood. In this study, three C. sinensis sHSP genes (i.e...
April 28, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28451821/genome-wide-analysis-of-autophagy-related-genes-in-banana-highlights-maatg8s-in-cell-death-and-autophagy-in-immune-response-to-fusarium-wilt
#10
Yunxie Wei, Wen Liu, Wei Hu, Guoyin Liu, Chunjie Wu, Wei Liu, Hongqiu Zeng, Chaozu He, Haitao Shi
MaATG8s play important roles in hypersensitive-like cell death and immune response, and autophagy is essential for disease resistance against Foc in banana. Autophagy is responsible for the degradation of damaged cytoplasmic constituents in the lysosomes or vacuoles. Although the effects of autophagy have been extensively revealed in model plants, the possible roles of autophagy-related gene in banana remain unknown. In this study, 32 MaATGs were identified in the draft genome, and the profiles of several MaATGs in response to fungal pathogen Fusarium oxysporum f...
April 27, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28451820/analysis-of-the-potato-calcium-dependent-protein-kinase-family-and-characterization-of-stcdpk7-a-member-induced-upon-infection-with-phytophthora-infestans
#11
Elisa Fantino, María Eugenia Segretin, Franco Santin, Federico Gabriel Mirkin, Rita M Ulloa
We describe the potato CDPK family and place StCDPK7 as a player in potato response to Phytophthora infestans infection, identifying phenylalanine ammonia lyase as its specific phosphorylation target in vitro. Calcium-dependent protein kinases (CDPKs) decode calcium (Ca(2+)) signals and activate different signaling pathways involved in hormone signaling, plant growth, development, and both abiotic and biotic stress responses. In this study, we describe the potato CDPK/CRK multigene family; bioinformatic analysis allowed us to identify 20 new CDPK isoforms, three CDPK-related kinases (CRKs), and a CDPK-like kinase...
April 27, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28451819/overexpression-of-mir529a-confers-enhanced-resistance-to-oxidative-stress-in-rice-oryza-sativa-l
#12
Erkui Yue, Zhen Liu, Chao Li, Yu Li, Qiuxiang Liu, Jian-Hong Xu
Overexpressing miR529a can enhance oxidative stress resistance by targeting OsSPL2 and OsSPL14 genes that can regulate the expression of their downstream SOD and POD related genes. MicroRNAs are involved in the regulation of plant developmental and physiological processes, and their expression can be altered when plants suffered environment stresses, including salt, oxidative, drought and Cadmium. The expression of microRNA529 (miR529) can be induced under oxidative stress. However, its biological function under abiotic stress responses is still unclear...
April 27, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28444442/high-accumulation-of-anthocyanins-via-the-ectopic-expression-of-atdfr-confers-significant-salt-stress-tolerance-in-brassica-napus-l
#13
Jihye Kim, Won Je Lee, Tien Thanh Vu, Chan Young Jeong, Suk-Whan Hong, Hojoung Lee
The ectopic expression of AtDFR results in increased accumulation of anthocyanins leading to enhanced salinity and drought stress tolerance in B. napus plants. Flavonoids with antioxidant effects confer many additional benefits to plants. Evidence indicates that flavonoids, including anthocyanins, protect tissues against oxidative stress from various abiotic stressors. We determined whether increases in anthocyanins increased abiotic stress tolerance in Brassica napus, because the values of B. napus L. and its cultivation area are increasing worldwide...
April 25, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28434019/recent-developments-in-olive-olea-europaea-l-genetics-and-genomics-applications-in-taxonomy-varietal-identification-traceability-and-breeding
#14
REVIEW
L Sebastiani, M Busconi
The latest results in DNA markers application and genomic studies in olive. Olive (Olea europaea L.) is among the most ancient tree crops worldwide and the source of oil beneficial for human health. Despite this, few data on olive genetics are available in comparison with other cultivated plant species. Molecular information is mainly linked to molecular markers and their application to the study of DNA variation in the Olea europaea complex. In terms of genomic research, efforts have been made in sequencing, heralding the era of olive genomic...
April 22, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28432478/the-arabidopsis-splicing-factors-atu2af65-atu2af35-and-atsf1-shuttle-between-nuclei-and-cytoplasms
#15
Hyo-Young Park, Keh Chien Lee, Yun Hee Jang, Soon-Kap Kim, May Phyo Thu, Jeong Hwan Lee, Jeong-Kook Kim
The Arabidopsis splicing factors, AtU2AF65, AtU2AF35, and AtSF1 shuttle between nuclei and cytoplasms. These proteins also move rapidly and continuously in the nuclei, and their movements are affected by ATP depletion. The U2AF65 proteins are splicing factors that interact with SF1 and U2AF35 proteins to promote U2snRNP for the recognition of the pre-mRNA 3' splice site during early spliceosome assembly. We have determined the subcellular localization and movement of these proteins' Arabidopsis homologs. It was found that Arabidopsis U2AF65 homologs, AtU2AF65a, and AtU2AF65b proteins interact with AtU2AF35a and AtU2AF35b, which are Arabidopsis U2AF35 homologs...
April 21, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28421280/systems-biology-of-seeds-deciphering-the-molecular-mechanisms-of-seed-storage-dormancy-and-onset-of-germination
#16
EDITORIAL
Nese Sreenivasulu
Seeds are heterogeneous storage reserves with wide array of storage compounds that include various soluble carbohydrates, starch polymer, storage proteins and lipids. These stored reserves comprise 70% of the world's caloric intake in the form of food and animal feed produced through sustainable agriculture, which contributes to food and nutritional security. Seed systems biology remains an enigmatic subject in understanding seed storage processes, maturation and pre-germinative metabolism. The reviews and research articles covered in this special issue of Plant Cell Reports highlight recent advances made in the area of seed biology that cover various systems biology applications such as gene regulatory networks, metabolomics, epigenetics and the role of micro-RNA in seed development...
April 18, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28405745/lethal-albinic-seedling-encoding-a-threonyl-trna-synthetase-is-involved-in-development-of-plastid-protein-synthesis-system-in-rice
#17
Yuan-Yan Zhang, Yuan-Yuan Hao, Yi-Hua Wang, Chun-Ming Wang, Yun-Long Wang, Wu-Hua Long, Di Wang, Xi Liu, Ling Jiang, Jian-Min Wan
An albinic rice is caused by mutation of threonyl-tRNA synthetase, which is essential for plant development by stabilizing of NEP and PEP gene expressions and chloroplast protein synthesis. Chloroplast biogenesis and development depend on complex genetic mechanisms. Apart from their function in translation, aminoacyl-tRNA synthetases (aaRSs) play additional role in gene expression regulation, RNA splicing, and cytokine activity. However, their detailed functions in plant development are still poorly understood...
April 12, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28401337/rrm-domain-of-arabidopsis-splicing-factor-sf1-is-important-for-pre-mrna-splicing-of-a-specific-set-of-genes
#18
Keh Chien Lee, Yun Hee Jang, Soon-Kap Kim, Hyo-Young Park, May Phyo Thu, Jeong Hwan Lee, Jeong-Kook Kim
The RNA recognition motif of Arabidopsis splicing factor SF1 affects the alternative splicing of FLOWERING LOCUS M pre-mRNA and a heat shock transcription factor HsfA2 pre-mRNA. Splicing factor 1 (SF1) plays a crucial role in 3' splice site recognition by binding directly to the intron branch point. Although plant SF1 proteins possess an RNA recognition motif (RRM) domain that is absent in its fungal and metazoan counterparts, the role of the RRM domain in SF1 function has not been characterized. Here, we show that the RRM domain differentially affects the full function of the Arabidopsis thaliana AtSF1 protein under different experimental conditions...
April 11, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28401336/genome-wide-identification-and-characterization-of-nb-arc-resistant-genes-in-wheat-triticum-aestivum-l-and-their-expression-during-leaf-rust-infection
#19
Saket Chandra, Andaleeb Z Kazmi, Zainab Ahmed, Gargi Roychowdhury, Veena Kumari, Manish Kumar, Kunal Mukhopadhyay
NB-ARC domain-containing resistance genes from the wheat genome were identified, characterized and localized on chromosome arms that displayed differential yet positive response during incompatible and compatible leaf rust interactions. Wheat (Triticum aestivum L.) is an important cereal crop; however, its production is affected severely by numerous diseases including rusts. An efficient, cost-effective and ecologically viable approach to control pathogens is through host resistance. In wheat, high numbers of resistance loci are present but only few have been identified and cloned...
April 11, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28393269/overexpression-of-sbap37-in-rice-alleviates-concurrent-imposition-of-combination-stresses-and-modulates-different-sets-of-leaf-protein-profiles
#20
Maheshwari Parveda, B Kiran, D L Punita, P B Kavi Kishor
SbAP37 transcription factor contributes to a combination of abiotic stresses when applied simultaneously in rice. It modulates a plethora of proteins that might regulate the downstream pathways to impart salt stress tolerance. APETALA type of transcription factor was isolated from Sorghum bicolor (SbAP37), overexpressed in rice using a salt inducible abscisic acid 2 (ABA2) promoter through Agrobacterium tumefaciens following in planta method. Transgenics were confirmed by PCR amplification of SbAP37, hygromycin phosphotransferase (hptII) marker and ABA2 promoter and DNA blot analysis...
April 9, 2017: Plant Cell Reports
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