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https://www.readbyqxmd.com/read/29051765/transcriptomic-analysis-of-seed-coats-in-yellow-seeded-brassica-napus-reveals-novel-genes-that-influence-proanthocyanidin-biosynthesis
#1
Meiyan Hong, Kaining Hu, Tiantian Tian, Xia Li, Li Chen, Yan Zhang, Bin Yi, Jing Wen, Chaozhi Ma, Jinxiong Shen, Tingdong Fu, Jinxing Tu
Yellow seeds are a favorable trait for Brassica crops breeding due to better quality than their black-seeded counterparts. Here, we compared the Brassica napus seed coat transcriptomes between yellow- and brown-seeded near-isogenic lines (Y-NIL and B-NIL) that were developed from the resynthesized yellow-seeded line No. 2127-17. A total of 4,974 differentially expressed genes (DEG) were identified during seed development, involving 3,128 up-regulated and 1,835 down-regulated genes in yellow seed coats. Phenylpropanoid and flavonoid biosynthesis pathways were enriched in down-regulated genes, whereas the top two pathways for up-regulated genes were plant-pathogen interaction and plant hormone signal transduction...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29049296/genome-wide-expression-analysis-of-salt-stressed-diploid-and-autotetraploid-paulownia-tomentosa
#2
Zhenli Zhao, Yongsheng Li, Haifang Liu, Xiaoqiao Zhai, Minjie Deng, Yanpeng Dong, Guoqiang Fan
Paulownia tomentosa is a fast-growing tree species with multiple uses. It is grown worldwide, but is native to China, where it is widely cultivated in saline regions. We previously confirmed that autotetraploid P. tomentosa plants are more stress-tolerant than the diploid plants. However, the molecular mechanism underlying P. tomentosa salinity tolerance has not been fully characterized. Using the complete Paulownia fortunei genome as a reference, we applied next-generation RNA-sequencing technology to analyze the effects of salt stress on diploid and autotetraploid P...
2017: PloS One
https://www.readbyqxmd.com/read/29047263/cross-talk-between-phosphate-starvation-and-other-environmental-stress-signaling-pathways-in-plants
#3
Dongwon Baek, Hyun Jin Chun, Dae-Jin Yun, Min Chul Kim
The maintenance of inorganic phosphate (Pi) homeostasis is essential for plant growth and yield. Plants have evolved strategies to cope with Pi starvation at the transcriptional, post-transcriptional, and post-translational levels, which maximizes its availability. Many transcription factors, miRNAs, and transporters participate in the Pi starvation signaling pathway where their activities are modulated by sugar and phytohormone signaling. Environmental stresses significantly affect the uptake and utilization of nutrients by plants, but their effects on the Pi starvation response remain unclear...
October 17, 2017: Molecules and Cells
https://www.readbyqxmd.com/read/29047144/mecom-hbs1l-myb-thrb-rarb-jak2-and-tert-polymorphisms-defining-the-genetic-predisposition-to-myeloproliferative-neoplasms-a-study-on-939-patients
#4
Adrian P Trifa, Claudia Bănescu, Anca S Bojan, Cristian M Voina, Ștefana Popa, Simona Vișan, Alina D Ciubean, Florin Tripon, Delia Dima, Viola M Popov, Ștefan C Vesa, Mihaela Andreescu, Tünde Török-Vistai, Romeo G Mihăilă, Nicoleta Berbec, Ioan Macarie, Andrei Coliță, Maria Iordache, Alina C Cătană, Marius F Farcaș, Ciprian Tomuleasa, Kinga Vasile, Cristina Truică, Adriana Todincă, Lavinia Pop-Muntean, Raluca Manolache, Horia Bumbea, Ana-Maria Vlădăreanu, Mihaela Gaman, Cristina M Ciufu, Radu A Popp
Polycythemia vera (PV), essential thrombocythemia (ET) and primary myelofibrosis (PMF) are classical myeloproliferative neoplasms (MPN), characterized by specific somatic mutations in JAK2, CALR or MPL genes. JAK2 46/1 and TERT rs2736100 polymorphisms are known to significantly predispose to MPN. This study aimed to establish the additional contribution of the recently described MECOM rs2201862, HBS1L-MYB rs9376092 and THRB-RARB rs4858647 polymorphisms to the occurrence of MPN. These three polymorphisms, along with JAK2 46/1 and TERT rs2736100 were genotyped in 939 MPN patients (454 with ET, 337 with PV and 148 with PMF) and 483 controls...
October 19, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/29044147/qtl-analysis-of-four-main-stem-bark-traits-using-a-gbs-snp-based-high-density-genetic-map-in-ramie
#5
Chan Liu, Siyuan Zhu, Shouwei Tang, Hongwu Wang, Xia Zheng, Xiaorong Chen, Qiuzhong Dai, Touming Liu
Ramie fiber extracted from ramie stem bark (RSB) is a highly important natural fiber, and therefore, RSB is an economically important plant organ. The genetic basis of RSB traits is poorly understood. In the present study, fiber yield and three RSB traits (bark thickness, bark weight, and fiber output ratio) were subject to quantitative trait locus (QTL) analysis using an F2 agamous line population derived from two ramie varieties (Qingdaye and Zhongzhu 1). A total of 4338 high-quality single nucleotide polymorphisms were identified using the genotyping-by-sequencing technique and were subsequently used to construct a high-density genetic map spanning 1942...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29037804/fluorescence-in-situ-hybridisation-as-an-ancillary-tool-in-the-diagnosis-of-acral-melanoma-a-review-of-44-cases
#6
Jing Su, Wenjuan Yu, Jianying Liu, Jie Zheng, Sixia Huang, Yuchen Wang, Shuangshuang Qi, Xiaolong Ma, Jian Chen, Yan Zhang
Acral melanoma is associated with outcomes which are more unfavourable than those of other melanoma subtypes, and acral melanoma has higher mortality. However, histological distinction of acral melanoma from acral naevi may be difficult. Fluorescence in situ hybridisation (FISH) targeting specific genes has been used as an ancillary method for differential diagnosis of melanocytic tumours, but most previous studies have focused on non-acral lesions which may have genetic alterations different from acral lesions...
October 13, 2017: Pathology
https://www.readbyqxmd.com/read/29036620/fe-controls-the-transcription-of-downstream-flowering-regulators-through-two-distinct-mechanisms-in-leaf-phloem-companion-cells
#7
Mio Shibuta, Mitsutomo Abe
In facultative long-day plant, Arabidopsis thaliana, FLOWERING LOCUS T (FT) encoding a mobile hormone florigen plays an essential role in modulating the optimal timing of flowering to ensure reproductive success. Under inductive long-day conditions, the transcription of FT is activated by the CONSTANS (CO)/NUCLEAR FACTOR-Y (NF-Y) protein complex in leaf phloem companion cells. FT is transported to the shoot apical meristem through interaction with florigen transporters, such as SODIUM POTASSIUM ROOT DEFECTIVE 1 (NaKR1)...
September 25, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29034968/genetics-and-evolution-of-mixta-genes-regulating-cotton-lint-fiber-development
#8
Huaitong Wu, Yue Tian, Qun Wan, Lei Fang, Xueying Guan, Jiedan Chen, Yan Hu, Wenxue Ye, Hua Zhang, Wangzhen Guo, Xiaoya Chen, Tianzhen Zhang
Cotton, with cellulose-enriched mature fibers, is the largest source of natural textiles. Through a map-based cloning strategy, we isolated an industrially important lint fiber development gene (Li3 ) that encodes an MYB-MIXTA-like transcription factor (MML) on chromosome D12 (GhMML4_D12). Virus-induced gene silencing or decreasing the expression of the GhMML4_D12 gene in n2 NSM plants resulted in a significant reduction in epidermal cell prominence and lint fiber production. GhMML4_D12 is arranged in tandem with GhMML3, another MIXTA gene responsible for fuzz fiber development...
October 16, 2017: New Phytologist
https://www.readbyqxmd.com/read/29027668/decreased-sorbitol-synthesis-leads-to-abnormal-stamen-development-and-reduced-pollen-tube-growth-via-an-myb-transcription-factor-mdmyb39l-in-apple-malus-domestica
#9
Dong Meng, Mingyang He, Yang Bai, Hongxia Xu, Abhaya M Dandekar, Zhangjun Fei, Lailiang Cheng
Sugars produced by photosynthesis not only fuel plant growth and development, but may also act as signals to regulate plant growth and development. This work focuses on the role of sorbitol, a sugar alcohol, in flower development and pollen tube growth of apple (Malus domestica). Transgenic 'Greensleeves' apple trees with decreased sorbitol synthesis had abnormal stamen development, a decreased pollen germination rate and reduced pollen tube growth, which were all closely related to lower sorbitol concentrations in stamens...
October 13, 2017: New Phytologist
https://www.readbyqxmd.com/read/29023752/a-novel-r3-myb-transcriptional-repressor-associated-with-the-loss-of-floral-pigmentation-in-iochroma
#10
Daniel J Gates, Bradley J S C Olson, Tom E Clemente, Stacey D Smith
Losses of floral pigmentation represent one of the most common evolutionary transitions in flower color, yet the genetic basis for these changes has been elucidated in only a handful of cases. Here we used crossing studies, bulk-segregant RNA sequencing, phylogenetic analyses and functional tests to identify the gene(s) responsible for the transition to white flowers in Iochroma loxense. Crosses between I. loxense and its blue-flowered sister species, I. cyaneum, suggested that a single locus controls the flower color difference and that the white allele causes a nearly complete loss of pigmentation...
October 12, 2017: New Phytologist
https://www.readbyqxmd.com/read/29023590/de-novo-assembly-and-analysis-of-the-transcriptome-of-rumex-patientia-l-during-cold-stress
#11
Jianxin Liu, Yongqing Xu, Liguo Zhang, Wei Li, Zhenxue Cai, Fei Li, Mu Peng, Fenglan Li, Baozhong Hu
BACKGROUND: Rumex patientia L. is consumed as a green vegetable in several parts of the world, and can withstand extremely low temperatures (-35°C). However, little or no available genomic data for this species has been reported to date. Here, we used Illumina Hiseq technology for transcriptome assembly in R. patientia under normal and cold conditions to evaluate how it responds to cold stress. RESULTS: After an in-depth RNA-Seq analysis, 115,589 unigenes were produced from the assembled transcripts...
2017: PloS One
https://www.readbyqxmd.com/read/29023006/expression-profile-of-stress-responsive-arabidopsis-thaliana-mirnas-and-their-target-genes-in-response-to-inoculation-with-pectobacterium-carotovorum-subsp-carotovorum
#12
A T Djami-Tchatchou, K Ntushelo
BACKGROUND: Pectobacterium carotovorum subsp. carotovorum (Pcc) is a soft rot bacterium which upon entry into the plant macerates plant tissues by producing plant cell wall degrading enzymes. It has a wide host range which includes carrot, potato, tomato, leafy greens, squash and other cucurbits, onion, green peppers and cassava. During plant-microbe interactions, one of the ways of plant response to pathogen infection is through the small RNA silencing mechanism. Under pathogen attack the plant utilizes microRNAs to regulate gene expression by means of mediating gene silencing at transcriptional and post-transcriptional level...
2017: Pakistan Journal of Biological Sciences: PJBS
https://www.readbyqxmd.com/read/29019094/lipid-droplet-associated-gene-expression-and-chromatin-remodelling-in-lipase-5-upstream-region-from-beginning-to-mid-endodormant-bud-in-fuji-apple
#13
Takanori Saito, Shanshan Wang, Katsuya Ohkawa, Hitoshi Ohara, Hiromi Ikeura, Yukiharu Ogawa, Satoru Kondo
We found that lipid accumulation in the meristem region and the expression of MdLIP2A, which appears to be regulated by chromatin remodeling, coincided with endodormancy induction in the 'Fuji' apple. In deciduous trees, including apples (Malus × domestica Borkh.), lipid accumulation in the meristem region towards endodormancy induction has been thought to be an important process for the acquisition of cold tolerance. In this study, we conducted histological staining of crude lipids in the meristem region of 'Fuji' apples and found that lipid accumulation coincided with endodormancy induction...
October 10, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/29017819/jasmonates-are-signals-in-the-biosynthesis-of-secondary-metabolites-pathways-transcription-factors-and-applied-aspects-a-brief-review
#14
REVIEW
Claus Wasternack, Miroslav Strnad
Jasmonates (JAs) are signals in plant stress responses and development. One of the first observed and prominent responses to JAs is the induction of biosynthesis of different groups of secondary compounds. Among them are nicotine, isoquinolines, glucosinolates, anthocyanins, benzophenanthridine alkaloids, artemisinin, and terpenoid indole alkaloids (TIAs), such as vinblastine. This brief review describes modes of action of JAs in the biosynthesis of anthocyanins, nicotine, TIAs, glucosinolates and artemisinin...
October 7, 2017: New Biotechnology
https://www.readbyqxmd.com/read/29016915/drought-tolerance-conferred-in-soybean-glycine-max-l-by-gmmyb84-a-novel-r2r3-myb-transcription-factor
#15
Nan Wang, Wenxiao Zhang, Mengyin Qin, Shuo Li, Meng Qiao, Zhenhua Liu, Fengning Xiang
MYB-type transcription factors (MYB TFs) play diverse roles in plant development and stress responses. However, the mechanisms underlying the actions of MYB TFs during stress response remain unclear. In this study we identified a R2R3-MYB TF in soybean (Glycine max), denoted GmMYB84, which contributes to drought resistance. Expression of GmMYB84 was induced by drought, salt stress, H2O2 and ABA. Compared with wild-type (WT), GmMYB84-overexpressing soybean mutants (OE lines) exhibited enhanced drought resistance with higher survival rate, longer primary root length, greater proline and reactive oxygen species (ROS) contents, higher antioxidant enzyme activities [peroxidase (POD), catalase (CAT), and superoxide dismutase (SOD)], a lower dehydration rate, and reduced malondialdehyde (MDA) content...
August 9, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29016897/genome-wide-analysis-and-expression-profile-of-the-myb-genes-in-brachypodium-distachyon
#16
Shoukun Chen, Xin Niu, Yuxiang Guan, Haifeng Li
MYB transcription factors are widespread in plants and play key roles in plant development. Although MYB transcription factors have been thoroughly characterized in many plants, genome-wide analysis of the MYB gene family has not yet been undertaken in Brachypodium distachyon. In this study, 122 BdMYB transcription factors were identified, including 85 MYB-R2R3, 34 MYB-related and 3 MYB-R1R2R3. Phylogenetic analysis showed that BdMYBs, OsMYBs, and AtMYBs with similar functions were clustered in the same sub-group, and the phylogenetic relationships of BdMYB transcription factors were supported by highly conserved motifs and gene structures...
August 29, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28993676/properties-analysis-of-transcription-factor-gene-tasmyb36-from-trichoderma-asperellum-cbs433-97-and-its-heterogeneous-transfomation-to-improve-antifungal-ability-of-populus
#17
Shida Ji, Zhiying Wang, Jinjie Wang, Haijuan Fan, Yucheng Wang, Zhihua Liu
The transcription of TasMYB36 in the biocontrol species T. asperellum was upregulated in four different pathogenic fermentation broths, suggesting that TasMYB36 plays an important role in the response to biotic stresses. Seventy-nine MYB transcription factors that were homologous to TasMYB36 from six sequenced Trichoderma genomes were analyzed. They were distributed in fourteen clades in the phylogenetic tree. The 79 MYBs contained 113 DNA binding domains, and their amino acid sequences were conserved and were different to those in plants...
October 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28992542/de-novo-transcriptome-sequencing-of-camellia-sasanqua-and-the-analysis-of-major-candidate-genes-related-to-floral-traits
#18
Hui Huang, En-Hua Xia, Hai-Bin Zhang, Qiu-Yang Yao, Li-Zhi Gao
Camellia sasanqua is one of the most famous horticultural plants in Camellia (Theaceae) due to its aesthetic appeal as landscape plant. Knowledge regarding the genetic basis of flowering time, floral aroma and color in C. sasanqua is limited, but is essential to breed new varieties with desired floral traits. Here, we described the de novo transcriptome of young leaves, flower buds and flowers of C. sasanqua. A total of 60,127 unigenes were functionally annotated based on the sequence similarity. After analysis, we found that two floral integrator genes, SOC1 and AP1, in flowering time pathway showed evidence of gene family expansion...
September 1, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28990186/molecular-mechanisms-underlying-grateloupia%C3%A2-imbricata-rhodophyta-carposporogenesis-induced-by-methyl-jasmonate
#19
Pilar Garcia-Jimenez, Montserrat Montero-Fernandez, R Rafael Robaina
When applied in vitro, methyl jasmonate is sensed by the red seaweed Grateloupia imbricate, substantially and visually affecting its carposporogenesis. However, although there is some understanding of the morphological changes induced by methyl jasmonate in vitro, little is known about the genes that are involved in red seaweed carposporogenesis and how their protein products act. For the work reported herein, the expression of genes in red seaweed that encode enzymes involved in the synthesis of methyl jasmonate (jasmonic acid carboxyl methyl transferase and a putative methyl transferase) was monitored, additionally the genes involved in oxidation (cytochrome P450 and WD40), jasmonate synthesis, signal transduction, and regulation of reactive oxygen species (MYB), and reproduction (ornithine decarboxylase) were monitored...
October 9, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28987863/six-nac-transcription-factors-involved-in-response-to-tylcv-infection-in-resistant-and-susceptible-tomato-cultivars
#20
Ying Huang, Tong Li, Zhi-Sheng Xu, Feng Wang, Ai-Sheng Xiong
NAC transcription factors (TFs) belong to plant-specific TFs, which have been identified in many plant species. The NAC TFs act as the nodes of a regulatory network in plant's response to abiotic and biotic stresses. Till now, response of tomato NAC TFs involved in Tomato yellow leaf curl virus (TYLCV) infection is unknown. In the present study, six NAC TFs were identified to respond to TYLCV infection in tomato. We observed that transcripts of four NAC genes (SlNAC20, SlNAC24, SlNAC47, and SlNAC61) were induced after TYLCV infection in resistant tomato cultivar...
September 28, 2017: Plant Physiology and Biochemistry: PPB
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