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Plant Cell Reports

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https://www.readbyqxmd.com/read/27904946/chlorophyll-fluorescence-lifetime-imaging-provides-new-insight-into-the-chlorosis-induced-by-plant-virus-infection
#1
Rong Lei, Hongshan Jiang, Fan Hu, Jin Yan, Shuifang Zhu
Leaf chlorosis induced by plant virus infection has a short fluorescence lifetime, which reflects damaged photosynthetic complexes and degraded chloroplasts. Plant viruses often induce chlorosis and necrosis, which are intimately related to photosynthetic functions. Chlorophyll fluorescence lifetime measurement is a valuable noninvasive tool for analyzing photosynthetic processes and is a sensitive indicator of the environment surrounding the fluorescent molecules. In this study, our central goal was to explore the effect of viral infection on photosynthesis by employing chlorophyll fluorescence lifetime imaging (FLIM), steady-state fluorescence, non-photochemical quenching (NPQ), transmission electron microscopy (TEM), and pigment analysis...
November 30, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27896424/dynamic-expression-analysis-of-early-response-genes-induced-by-potato-virus-y-in-pvy-resistant-nicotiana-tabacum
#2
Shuai Chen, Fengxia Li, Dan Liu, Caihong Jiang, Lijie Cui, Lili Shen, Guanshan Liu, Aiguo Yang
Dynamic transcriptional changes of the host early responses genes were detected in PVY-resistant tobacco varieties infected with Potato virus Y; PVY resistance is a complex process that needs series of stress responses. Potato virus Y (PVY) causes a severe viral disease in cultivated crops, especially in Solanum plants. To understand the molecular basis of plant responses to the PVY stress, suppression subtractive hybridization (SSH) and microarray approaches were combined to identify the potentially important or novel genes that were involved in early stages (12 h, 1, 2, 3, 5, 8 days) of tobacco response to PVY infection...
November 28, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27882409/the-pivotal-role-of-abscisic-acid-signaling-during-transition-from-seed-maturation-to-germination
#3
REVIEW
An Yan, Zhong Chen
Seed maturation and germination are two continuous developmental processes that link two distinct generations in spermatophytes; the precise genetic control of these two processes is, therefore, crucially important for the survival of the next generation. Pieces of experimental evidence accumulated so far indicate that a concerted action of endogenous signals and environmental cues is required to govern these processes. Plant hormone abscisic acid (ABA) has been suggested to play a predominant role in directing seed maturation and maintaining seed dormancy under unfavorable environmental conditions until antagonized by gibberellins (GA) and certain environmental cues to allow the commencement of seed germination when environmental conditions are favorable; therefore, the balance of ABA and GA is a major determinant of the timing of seed germination...
November 23, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27878342/breeding-approaches-and-genomics-technologies-to-increase-crop-yield-under-low-temperature-stress
#4
REVIEW
Uday Chand Jha, Abhishek Bohra, Rintu Jha
Improved knowledge about plant cold stress tolerance offered by modern omics technologies will greatly inform future crop improvement strategies that aim to breed cultivars yielding substantially high under low-temperature conditions. Alarmingly rising temperature extremities present a substantial impediment to the projected target of 70% more food production by 2050. Low-temperature (LT) stress severely constrains crop production worldwide, thereby demanding an urgent yet sustainable solution. Considerable research progress has been achieved on this front...
November 22, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27873007/difference-in-capsaicinoid-biosynthesis-gene-expression-in-the-pericarp-reveals-elevation-of-capsaicinoid-contents-in-chili-peppers-capsicum-chinense
#5
Yoshiyuki Tanaka, Fumihiro Nakashima, Erasmus Kirii, Tanjuro Goto, Yuichi Yoshida, Ken-Ichiro Yasuba
This research reveals that the up-regulated expression of multiple capsaicinoid biosynthetic genes in pericarp tissue leads to the elevation of total capsaicinoid content in chili pepper fruit. Capsaicinoids are health-functional compounds that are produced uniquely in chili pepper fruits. A high capsaicinoid level is one of the major parameters determining the commercial quality and health-promoting properties of chili peppers. To investigate the mechanisms responsible for its high contents, we compared an extremely pungent cultivar 'Trinidad Moruga Scorpion Yellow' (MY) with other cultivars of different pungency levels (Fushimi-amanaga, Takanotsume, Red Habanero)...
November 21, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27866260/isolation-and-characterization-of-a-novel-cadmium-regulated-yellow-stripe-like-transporter-snysl3-in-solanum-nigrum
#6
Shanshan Feng, Jinjuan Tan, Yuxiu Zhang, Shuang Liang, Shuqin Xiang, Hong Wang, Tuanyao Chai
SnYSL3 encodes a plasma-localized transporter delivering various metal-nicotianamine complexes. The expression of SnYSL3 is up-regulated by excess Cd, suggesting an important role for SnYSL3 in response to Cd stress. The Yellow Stripe-Like (YSL) transporters have been proposed to participate in metal uptake and long-range transport in model plants. In this study, we isolated and characterized a novel member of the YSL gene family, SnYSL3, from the cadmium hyperaccumulator Solanum nigrum. SnYSL3 was constitutively expressed and encodes a plasma membrane-localized protein...
November 19, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27864606/growth-increase-of-arabidopsis-by-forced-expression-of-rice-45s-rrna-gene
#7
So Makabe, Reiko Motohashi, Ikuo Nakamura
Forced expression of rice 45S rRNA gene conferred ca. 2-fold increase of above-ground growth in transgenic Arabidopsis . This growth increase was probably brought by cell proliferation, not by cell enlargement. Recent increase in carbon dioxide emissions is causing global climate change. The use of plant biomass as alternative energy source is one way to reduce these emissions. Therefore, reinforcement of plant biomass production is an urgent key issue to overcome both depletion of fossil energies and emission of carbon dioxide...
November 18, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27858216/inducing-triploids-and-tetraploids-with-high-temperatures-in-populus-sect-tacamahaca
#8
Liqin Guo, Wenting Xu, Yan Zhang, Jinfeng Zhang, Zunzheng Wei
This study is the first to report that triploids and tetraploids have been successfully produced through embryo sac and zygotic embryo chromosome doubling with high temperatures in P. simonii Carr. and its hybrid. A new synthetic polyploid induced by hybridization with unreduced gametes and heterozygotic embryo chromosome doubling can effectively combine polyploidy and heterosis, which can provide two major breeding advantages. In Populus, successfully creating and cultivating new polyploid varieties have economic and ecological production value...
November 17, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27853836/increasing-the-synthesis-of-bioactive-abietane-diterpenes-in-salvia-sclarea-hairy-roots-by-elicited-transcriptional-reprogramming
#9
M C Vaccaro, M E Alfieri, N Malafronte, N De Tommasi, A Leone
Transcriptional activation of genes belonging to the plastidial MEP-derived isoprenoid pathway by elicitation with methyl jasmonate and coronatine enhanced the content of bioactive abietane diterpenes in Salvia sclarea hairy roots. We have shown that aethiopinone, an abietane diterpene synthesized in Salvia sclarea roots is cytotoxic and induces apoptosis in human melanoma cells. To develop a production platform for this compound and other abietane diterpenes, hairy root technology was combined with the elicitation of methyl jasmonate (MeJA) or the phytotoxin coronatine (Cor)...
November 16, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27844102/epiallelic-changes-in-known-stress-responsive-genes-under-extreme-drought-conditions-in-brassica-juncea-l-czern
#10
Rahul Sharma, Parivartan Vishal, Sanjana Kaul, Manoj K Dhar
Under severe drought conditions, Brassica juncea shows differential methylation and demethylation events, such that certain epialleles are silenced and some are activated. The plant employed avoidance strategy by delaying apoptosis through the activation of several genes. Harsh environmental conditions pose serious threat to normal growth and development of crops, sometimes leading to their death. However, plants have developed an essential mechanism of modulation of gene activities by epigenetic modifications...
November 14, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27844101/functional-identification-of-apple-mdjaz2-in-arabidopsis-with-reduced-ja-sensitivity-and-increased-stress-tolerance
#11
Xiu-Hong An, Yu-Jin Hao, En-Mao Li, Kai Xu, Cun-Gang Cheng
Here, we report the decrease of JA-sensitivity and enhancement of tolerance to salt and PEG stresses in Arabidopsis overexpressing apple MdJAZ2. As signalling molecules, jasmonates (JAs) play significant roles in plant development and stress responses. JAZ proteins are the targets of the SCF(COI1) complex and act as the negative regulators in JA signalling pathway. However, there are no reports regarding the biological function of apple JAZ genes. In this study, one JAZ gene, MdJAZ2 from apple, was functionally characterized in detail...
November 14, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27838815/photosynthetic-and-biochemical-mechanisms-of-an-ems-mutagenized-cowpea-associated-with-its-resistance-to-cowpea-severe-mosaic-virus
#12
Pedro F N Souza, Fredy D A Silva, Fabricio E L Carvalho, Joaquim A G Silveira, Ilka M Vasconcelos, Jose T A Oliveira
The seed treatment of a CPSMV-susceptible cowpea genotype with the mutagenic agent EMS generated mutagenized resistant plantlets that respond to the virus challenge by activating biochemical and physiological defense mechanisms. Cowpea is an important crop that makes major nutritional contributions particularly to the diet of the poor population worldwide. However, its production is low, because cowpea is naturally exposed to several abiotic and biotic stresses, including viral agents. Cowpea severe mosaic virus (CPSMV) drastically affects cowpea grain production...
November 12, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27838814/methylglyoxal-alleviates-cadmium-toxicity-in-wheat-triticum-aestivum-l
#13
Zhong-Guang Li, Xiang-Qiu Duan, Yan-Mei Xia, Yue Wang, Zhi-Hao Zhou, Xiong Min
Methylglyoxal alleviates cadmium toxicity in wheat (Triticum aestivum L) by improving plant growth. For a long time, the reactive α, β-carbonyl ketoaldehyde methylglyoxal (CH3COCHO; MG) has been regarded as merely a toxic metabolite in plants, but, now, emerging as a signal molecule in plants. In this study, cadmium (Cd) stress decreased plant height, root length, fresh weight (FW), and dry weight (DW) in a concentration-dependent manner, indicating that Cd had toxic effects on the growth of wheat seedlings...
November 12, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27837261/transgenic-sugarcane-overexpressing-canecpi-1-negatively-affects-the-growth-and-development-of-the-sugarcane-weevil-sphenophorus-levis
#14
Vanessa Karine Schneider, Andrea Soares-Costa, Mohan Chakravarthi, Carolina Ribeiro, Sabrina Moutinho Chabregas, Maria Cristina Falco, Flavio Henrique-Silva
Transgenic sugarcane expressing CaneCPI-1 exhibits resistance to Sphenophorus levis larvae. Transgenic plants have widely been used to improve resistance against insect attack. Sugarcane is an economically important crop; however, great losses are caused by insect attack. Sphenophorus levis is a sugarcane weevil that digs tunnels in the stem base, leading to the destruction of the crop. This insect is controlled inefficiently by chemical insecticides. Transgenic plants expressing peptidase inhibitors represent an important strategy for impairing insect growth and development...
November 11, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27834007/targeted-mutagenesis-by-crispr-cas9-system-in-the-model-legume-medicago-truncatula
#15
Yingying Meng, Yaling Hou, Hui Wang, Ronghuan Ji, Bin Liu, Jiangqi Wen, Lifang Niu, Hao Lin
No abstract text is available yet for this article.
November 11, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27812750/comparative-transcriptome-profiling-of-upland-vs16-and-lowland-ap13-ecotypes-of-switchgrass
#16
Vasudevan Ayyappan, Malay C Saha, Jyothi Thimmapuram, Venkateswara R Sripathi, Ketaki P Bhide, Elizabeth Fiedler, Rita K Hayford, Venu Kal Kalavacharla
Transcriptomes of two switchgrass genotypes representing the upland and lowland ecotypes will be key tools in switchgrass genome annotation and biotic and abiotic stress functional genomics. Switchgrass (Panicum virgatum L.) is an important bioenergy feedstock for cellulosic ethanol production. We report genome-wide transcriptome profiling of two contrasting tetraploid switchgrass genotypes, VS16 and AP13, representing the upland and lowland ecotypes, respectively. A total of 268 million Illumina short reads (50 nt) were generated, of which, 133 million were obtained in AP13 and the rest 135 million in VS16...
November 3, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27807644/differential-proteome-analysis-during-early-somatic-embryogenesis-in-musa-spp-aaa-cv-grand-naine
#17
Marimuthu Kumaravel, Subbaraya Uma, Suthanthiram Backiyarani, Marimuthu Somasundaram Saraswathi, Muthu Mayil Vaganan, Muthusamy Muthusamy, Kallu Purayil Sajith
Endogenous hormone secretion proteins along with stress and defense proteins play predominant role in banana embryogenesis. This study reveals the underlying molecular mechanism during transition from vegetative to embryogenic state. Banana (Musa spp.) is well known globally as a food fruit crop for millions. The requirement of quality planting material of banana is enormous. Although mass multiplication through tissue culture is in vogue, high-throughput techniques like somatic embryogenesis (SE) as a mass multiplication tool needs to be improved...
November 2, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27796490/heterologous-expression-of-a-novel-zoysia-japonica-salt-induced-glycine-rich-rna-binding-protein-gene-zjgrp-caused-salt-sensitivity-in-arabidopsis
#18
Ke Teng, Penghui Tan, Guozeng Xiao, Liebao Han, Zhihui Chang, Yuehui Chao
A novel Zoysia japonica salt-induced glycine-rich RNA-binding protein gene was cloned in this study and its overexpression caused salt sensitivity in transgenic Arabidopsis. Glycine-rich RNA-binding proteins (GRPs) play crucial roles in diverse plant developmental processes. However, the mechanisms and functions of GRPs in salinity stress responses remain largely unknown. In this study, rapid amplification of cDNA end (RACE) PCR methods was adopted to isolate ZjGRP from Zosyia japonica, a salt-tolerant grass species...
October 28, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27796489/integration-of-omics-approaches-to-understand-oil-protein-content-during-seed-development-in-oilseed-crops
#19
REVIEW
Manju Gupta, Pudota B Bhaskar, Shreedharan Sriram, Po-Hao Wang
Oilseed crops, especially soybean (Glycine max) and canola/rapeseed (Brassica napus), produce seeds that are rich in both proteins and oils and that are major sources of energy and nutrition worldwide. Most of the nutritional content in the seed is accumulated in the embryo during the seed filling stages of seed development. Understanding the metabolic pathways that are active during seed filling and how they are regulated are essential prerequisites to crop improvement. In this review, we summarize various omics studies of soybean and canola/rapeseed during seed filling, with emphasis on oil and protein traits, to gain a systems-level understanding of seed development...
October 27, 2016: Plant Cell Reports
https://www.readbyqxmd.com/read/27787596/overexpression-of-psk1-a-skp1-like-gene-homologue-from-paeonia-suffruticosa-confers-salinity-tolerance-in-arabidopsis
#20
Qing Hao, Hongxu Ren, Jin Zhu, Liangsheng Wang, Shouchen Huang, Zheng'an Liu, Zhimin Gao, Qingyan Shu
Our study is the first to demonstrate that PSK1 , a SKP1 -like gene homologue, is involved in salinity tolerance. Our functional characterization of PSK1 provides new insights into tree peony development. A homologous gene of S-phase kinase-associated protein1 (SKP1) was cloned from tree peony (Paeonia suffruticosa) and denoted as PSK1. The 462-bp open reading frame of PSK1 was predicted to encode a protein comprising 153 amino acids, with a molecular mass of 17 kDa. The full-length gene was 1,634 bp long and included a large 904-bp intron...
October 27, 2016: Plant Cell Reports
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