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Plant Cell Reports

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https://www.readbyqxmd.com/read/28314904/the-arabidopsis-orange-ator-gene-promotes-carotenoid-accumulation-in-transgenic-corn-hybrids-derived-from-parental-lines-with-limited-carotenoid-pools
#1
Judit Berman, Uxue Zorrilla-López, Vicente Medina, Gemma Farré, Gerhard Sandmann, Teresa Capell, Paul Christou, Changfu Zhu
The AtOR gene enhances carotenoid levels in corn by promoting the formation of plastoglobuli when the carotenoid pool is limited, but has no further effect when carotenoids are already abundant. The cauliflower orange (or) gene mutation influences carotenoid accumulation in plants by promoting the transition of proplastids into chromoplasts, thus creating intracellular storage compartments that act as metabolic sink. We overexpressed the Arabidopsis OR gene under the control of the endosperm-specific wheat LMW glutenin promoter in a white corn variety that normally accumulates only trace amounts of carotenoids...
March 17, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28299429/anther-preferential-expressing-gene-pmr-is-essential-for-the-mitosis-of-pollen-development-in-rice
#2
Yaqin Liu, Ya Xu, Sheng Ling, Shasha Liu, Jialing Yao
Phenotype identification, expression examination, and function prediction declared that the anther-preferential expressing gene PMR may participate in regulation of male gametophyte development in rice. Male germline development in flowering plants produces the pair of sperm cells for double fertilization and the pollen mitosis is a key process of it. Although the structural features of male gametophyte have been defined, the molecular mechanisms regulating the mitotic cell cycle are not well elucidated in rice...
March 15, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28289886/the-pivotal-role-of-small-non-coding-rnas-in-the-regulation-of-seed-development
#3
REVIEW
Andreia S Rodrigues, Célia M Miguel
Seeds represent a crucial stage of the seed plants life cycle. It is during seed development that the foundations of the future plant body, and the ability to give rise to a new plant capable of growing under sometimes adverse environmental conditions, are established. Small non-coding RNAs are major regulators of gene expression both at the post-transcriptional and transcriptional levels and, not surprisingly, these elements play major roles in seed development and germination. We review here the current knowledge about small RNA expression and functions in seed development, going from the morphogenesis phase comprehending embryo development and patterning, to the several steps of the maturation phase, ending in the transition to the germination...
March 13, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28289885/generation-of-stable-nulliplex-autopolyploid-lines-of-arabidopsis-thaliana-using-crispr-cas9-genome-editing
#4
Peter Ryder, Marcus McHale, Antoine Fort, Charles Spillane
RNA-guided endonuclease-mediated targeted mutagenesis using the clustered regularly interspersed short palindromic repeats (CRISPR)/Cas9 system has been successful at targeting specific loci for modification in plants. While polyploidy is an evolutionary mechanism enabling plant adaptation, the analysis of gene function in polyploid plants has been limited due to challenges associated with generating polyploid knockout mutants for all gene copies in polyploid plant lines. This study investigated whether CRISPR/Cas9 mediated targeted mutagenesis can generate nulliplex tetraploid mutant lines in Arabidopsis thaliana, while also comparing the relative efficiency of targeted mutagenesis in tetraploid (4x) versus diploid (2x) backgrounds...
March 13, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28289884/the-relative-contribution-of-genes-operating-in-the-s-methylmethionine-cycle-to-methionine-metabolism-in-arabidopsis-seeds
#5
Hagai Cohen, Asaf Salmon, Zipora Tietel, Yael Hacham, Rachel Amir
Enzymes operating in the S -methylmethionine cycle make a differential contribution to methionine synthesis in seeds. In addition, mutual effects exist between the S -methylmethionine cycle and the aspartate family pathway in seeds. Methionine, a sulfur-containing amino acid, is a key metabolite in plant cells. The previous lines of evidence proposed that the S-methylmethionine (SMM) cycle contributes to methionine synthesis in seeds where methionine that is produced in non-seed tissues is converted to SMM and then transported via the phloem into the seeds...
March 13, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28285407/novel-9-cis-all-trans-%C3%AE-carotene-isomerases-from-plastidic-oil-bodies-in-dunaliella-bardawil-catalyze-the-conversion-of-all-trans-to-9-cis-%C3%AE-carotene
#6
Lital Davidi, Uri Pick
We identified and demonstrated the function of 9-cis/all-trans β-carotene isomerases in plastidic globules of Dunaliella bardawil, the species accumulating the highest levels of 9-cis β-carotene that is essential for humans. The halotolerant alga Dunaliella bardawil is unique in that it accumulates under light stress high levels of β-carotene in plastidic lipid globules. The pigment is composed of two major isomers: all-trans β-carotene, the common natural form of this pigment, and 9-cis β-carotene. The biosynthetic pathway of β-carotene is known, but it is not clear how the 9-cis isomer is formed...
March 11, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28280927/cuticle-ultrastructure-cuticular-lipid-composition-and-gene-expression-in-hypoxia-stressed-arabidopsis-stems-and-leaves
#7
Hyojin Kim, Dongsu Choi, Mi Chung Suh
An increased permeability of the cuticle is closely associated with downregulation of genes involved in cuticular lipid synthesis in hypoxia-stressed Arabidopsis and may allow plants to cope with oxygen deficiency. The hydrophobic cuticle layer consisting of cutin polyester and cuticular wax is the first barrier to protect the aerial parts of land plants from environmental stresses. In the present study, we investigated the role of cuticle membrane in Arabidopsis responses to oxygen deficiency. TEM analysis showed that the epidermal cells of hypoxia-treated Arabidopsis stems and leaves possessed a thinner electron-translucent cuticle proper and a more electron-dense cuticular layer...
March 9, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28275854/in-vivo-imaging-of-ca-2-accumulation-during-cotton-fiber-initiation-using-fluorescent-indicator-yc3-60
#8
Mi Zhang, Hui-Zhen Cao, Lei Hou, Shui-Qing Song, Jian-Yan Zeng, Yan Pei
Non-tip-focused Ca (2+) gradient indicated by genetically expressing a FRET-based calcium sensor YC3.60 was established in spherical expanding cotton fibers, which is vital for cotton fiber initiation. Cotton fiber is a single cell elongated from ovule epidermis. It is not only the most important natural fiber used in the textile industry but also an ideal model for studying cell differentiation and elongation. Before linear cell growth, cotton fibers undergo spherical expansion at the beginning of initiation...
March 8, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28275853/transcriptome-analysis-reveals-metabolic-alteration-due-to-consecutive-monoculture-and-abiotic-stress-stimuli-in-rehamannia-glutinosa-libosch
#9
Yunhe Tian, Fajie Feng, Bao Zhang, Mingjie Li, Fengqing Wang, Li Gu, Aiguo Chen, Zhanjie Li, Wenbo Shan, Xiaoran Wang, Xinjian Chen, Zhongyi Zhang
We deeply investigated the mechanism underlying metabolic regulation in response to consecutive monoculture (replanting disease) and different abiotic stresses that unfolded the response mechanism to consecutive monoculture problem through RNA-seq analysis. The consecutive monoculture problem (CMP) resulted of complex environmental stresses mediated by multiple factors. Previous studies have noted that multiple stress factors in consecutive monoculture soils or plants severely limited the interpretation of the critical molecular mechanism, and made a predict that the specifically responding factor was autotoxic allelochemicals...
March 8, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28275852/ga-della-pathway-is-involved-in-regulation-of-nitrogen-deficiency-induced-anthocyanin-accumulation
#10
Yongqiang Zhang, Zhongjuan Liu, Jianping Liu, Sheng Lin, Jianfeng Wang, Wenxiong Lin, Weifeng Xu
DELLA proteins positively regulate nitrogen deficiency-induced anthocyanin accumulation through directly interaction with PAP1 to enhance its transcriptional activity on anthocyanin biosynthetic gene expressions. Plants can survive a limiting nitrogen supply by undergoing adaptive responses, including induction of anthocyanin production. However, the detailed mechanism is still unclear. In this study, we found that this process was impaired and enhanced, respectively, by exogenous GA3 (an active form of GAs) and paclobutrazol (PAC, a specific GA biosynthesis inhibitor) in Arabidopsis seedlings...
March 8, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28265748/identification-of-different-cytoplasms-based-on-newly-developed-mitotype-specific-markers-for-marker-assisted-selection-breeding-in-brassica-napus-l
#11
Shuangping Heng, Fengyi Chen, Chao Wei, Kaining Hu, Zonghui Yang, Jing Wen, Bin Yi, Chaozhi Ma, Jinxing Tu, Ping Si, Tingdong Fu, Jinxiong Shen
Different mitotype-specific markers were developed to distinguish different cytoplasms in Brassica napus L. Mitotype-specific markers have been developed to distinguish different mitotypes in plant. And use of molecular markers to identify different mitotypes in Brassica napus would enhance breeding efficiency. Here, we comparatively analyzed six sequenced mitochondrial genomes in Brassica napus and identified collinear block sequences and mitotype-specific sequences (MSSs) of these mitochondrial genomes. The collinear block sequences between mitochondrial genomes of nap, cam, and pol cytoplasmic male sterility (CMS) lines were higher than those of other lines...
March 6, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28260122/impacts-of-the-overexpression-of-a-tomato-translationally-controlled-tumor-protein-tctp-in-tobacco-revealed-by-phenotypic-and-transcriptomic-analysis
#12
Márcio de Carvalho, Márcio Luís Acencio, Alessandra Vasconcellos Nunes Laitz, Laura Migliorini de Araújo, Mariana de Lara Campos Arcuri, Leandro Costa do Nascimento, Ivan G Maia
Overexpression of a tomato TCTP impacts plant biomass production and performance under stress. These phenotypic alterations were associated with the up-regulation of genes mainly related to photosynthesis, fatty acid metabolism and water transport. The translationally controlled tumor protein (TCTP) is a multifaceted and highly conserved eukaryotic protein. In plants, despite the existence of functional data implicating this protein in cell proliferation and growth, the detailed physiological roles of many plant TCTPs remain poorly understood...
March 4, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28255787/expression-profiling-of-auxin-response-factor-genes-during-somatic-embryogenesis-induction-in-arabidopsis
#13
Barbara Wójcikowska, Małgorzata D Gaj
Extensive modulation of numerous ARF transcripts in the embryogenic culture of Arabidopsis indicates a substantial role of auxin signaling in the mechanism of somatic embryogenesis induction. Somatic embryogenesis (SE) is induced by auxin in plants and auxin signaling is considered to play a key role in the molecular mechanism that controls the embryogenic transition of plant somatic cells. Accordingly, the expression of AUXIN RESPONSE FACTOR (ARF) genes in embryogenic culture of Arabidopsis was analyzed. The study revealed that 14 of the 22 ARFs were transcribed during SE in Arabidopsis...
March 2, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28243724/in-vitro-gene-expression-and-mrna-translocation-from-transformed-walnut-juglans-regia-rootstocks-expressing-dsred-fluorescent-protein-to-wild-type-scions
#14
Xiaochen Liu, Sriema L Walawage, Charles A Leslie, Abhaya M Dandekar, David M Tricoli, Hengkang Hu, Youjun Huang, Jiaqi Zhang, Chuanmei Xv, Jianqin Huang, Qixiang Zhang
An in vitro grafting method was developed for examining gene translocation from rootstock to scion in walnut. Results showed the DsRED gene itself was not translocated but expressed mRNA was. Grafting is widely used in plants, especially in fruit and nut crops. Selected rootstocks can control scion growth and physiological traits, including shortening of the juvenile phase and controlling tree size. Rootstocks also can provide improved soil adaptation and pathogen resistance. Development of genetically modified (GM) fruit crops has progressed recently, but commercial cultivation is still limited due to the time required for evaluation and issues with deregulation...
February 27, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28239746/induction-of-sa-signaling-pathway-and-ethylene-biosynthesis-in-trichoderma-harzianum-treated-tomato-plants-after-infection-of-the-root-knot-nematode-meloidogyne-incognita
#15
Paola Leonetti, Maria Chiara Zonno, Sergio Molinari, Claudio Altomare
Salicylic acid-signaling pathway and ethylene biosynthesis were induced in tomato treated with Trichoderma harzianum when infected by root-knot nematodes and limited the infection by activation of SAR and ethylene production. Soil pre-treatment with Trichoderma harzianum (Th) strains ITEM 908 (T908) and T908-5 decreased susceptibility of tomato to Meloidogyne incognita, as assessed by restriction in nematode reproduction and development. The effect of T. harzianum treatments on plant defense was detected by monitoring the expression of the genes PR-1/PR-5 and JERF3/ACO, markers of the SA- and JA/ET-dependent signaling pathways, respectively...
February 26, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28238071/acyl-coa-oxidase-1-is-involved-in-%C3%AE-decalactone-release-from-peach-prunus-persica-fruit
#16
Liping Zhang, Haiyan Li, Ling Gao, Yujie Qi, Wanyi Fu, Xiongwei Li, Xiang Zhou, Qikang Gao, Zhongshan Gao, Huijuan Jia
γ-Decalactone accumulation in peach mesocarp was highly correlated with ACX enzyme activity and natural PpACX1 content. Adding the purified recombinant PpACX1 induced γ-decalactone biosynthesis in cultured mesocarp discs in vitro. Previous gene expression studies have implied that acyl coenzyme A oxidase (ACX) is related to lactones synthesis, the characteristic aroma compounds of peach. Here, we analysed the correlation between γ-decalactone content and ACX enzyme activity in mesocarp of five different types of fully ripe peach varieties...
February 25, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28210764/review-biosafety-assessment-of-bt-rice-and-other-bt-crops-using-spiders-as-example-for-non-target-arthropods-in-china
#17
REVIEW
Huilin Yang, Yuande Peng, Jianxiang Tian, Juan Wang, Jilin Hu, Qisheng Song, Zhi Wang
Since the birth of transgenic crops expressing Bacillus thuringiensis (Bt) toxin for pest control, the public debate regarding ecological and environmental risks as well as benefits of Bt crops has continued unabated. The impact of Bt crops, especially on non-target invertebrates, has received particular attention. In this review, we summarize and analyze evidences for non-target effects of Bt rice on spiders, major predators in rice fields. Bt rice has been genetically modified to express the Bt protein, which has been shown to be transferred and accumulate in spiders as part of their food chain...
February 16, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28204911/selection-of-transformation-efficient-barley-genotypes-based-on-tfa-transformation-amenability-haplotype-and-higher-resolution-mapping-of-the-tfa-loci
#18
Hiroshi Hisano, Brigid Meints, Matthew J Moscou, Luis Cistue, Begoña Echávarri, Kazuhiro Sato, Patrick M Hayes
The genetic substitution of transformation amenability alleles from 'Golden Promise' can facilitate the development of transformation-efficient lines from recalcitrant barley cultivars. Barley (Hordeum vulgare) cv. 'Golden Promise' is one of the most useful and well-studied cultivars for genetic manipulation. In a previous report, we identified several transformation amenability (TFA) loci responsible for Agrobacterium-mediated transformation using the F2 generation of immature embryos, derived from 'Haruna Nijo' × 'Golden Promise,' as explants...
February 15, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28197719/regulatory-crosstalk-between-micrornas-and-hormone-signalling-cascades-controls-the-variation-on-seed-dormancy-phenotype-at-arabidopsis-thaliana-seed-set
#19
Yang Liu, Yousry A El-Kassaby
We employed an Illumina sequencing approach to identify candidate microRNA cohorts that may greatly contribute to seed dormancy modulation and to construct a microRNA-gene regulatory network in hormone signalling cascades. MicroRNAs (miRNAs) are important signalling molecules and regulate many developmental programs of plants. Some miRNAs have been integrated into gene regulatory networks (GRNs) and coordinate developmental plasticity, but few study systematically investigated how phenotypical variations are regulated through differential expression of miRNA tags in GRNs during seed set...
February 14, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28168515/the-bamboo-aquaporin-gene-petip4-1-1-confers-drought-and-salinity-tolerance-in-transgenic-arabidopsis
#20
Huayu Sun, Lichao Li, Yongfeng Lou, Hansheng Zhao, Yihong Yang, Sining Wang, Zhimin Gao
PeTIP4;1-1, an aquaporin gene involved in bamboo shoot growth, is regulated by abiotic stresses. Overexpression of PeTIP4;1-1 confers drought and salinity tolerance in transgenic Arabidopsis. Aquaporins play a central role in numerous physiological processes throughout plant growth and development. PeTIP4;1-1, an aquaporin gene isolated from moso bamboo (Phyllostachys edulis), comprises an open reading frame (ORF) of 756 bp encoding a peptide of 251 amino acids. The genomic sequence corresponding to the ORF of PeTIP4;1-1 was 1777 bp and contained three exons separated by two introns...
February 6, 2017: Plant Cell Reports
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