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Plant Biotechnology Journal

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https://www.readbyqxmd.com/read/28718511/genome-wide-identification-of-genes-involved-in-the-potato-response-to-drought-indicates-functional-evolutionary-conservation-with-arabidopsis-plants
#1
M Pieczynski, A Wyrzykowska, K Milanowska, D Boguszewska-Mankowska, B Zagdanska, W Karlowski, A Jarmolowski, Z Szweykowska-Kulinska
Potato is one of the four most important food crop plants worldwide and is strongly affected by drought. The following two pairs of potato cultivars, which are related in ancestry but show different drought tolerances, were chosen for comparative gene expression studies: Gwiazda/Oberon and Tajfun/Owacja. Comparative RNA-seq analyses of gene expression differences in the transcriptomes obtained from drought-tolerant versus drought-sensitive plants during water shortage conditions were performed. The twenty-three top-ranking genes were selected, 22 of which are described here as novel potato drought-responsive genes...
July 17, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28718508/development-of-ifox-hunting-as-a-functional-genomics-tool-and-demonstration-of-its-use-to-identify-early-senescence-related-genes-in-the-polyploid-brassica-napus
#2
Juan Ling, Renjie Li, Chinedu Charles Nwafor, Junluo Cheng, Maoteng Li, Qing Xu, Jian Wu, Lu Gan, Qingyong Yang, Chao Liu, Ming Chen, Yongming Zhou, Edgar B Cahoon, Chunyu Zhang
Functional genomics studies of many polyploid crops, including rapeseed (Brassica napus) are constrained by limited tool sets. Here we report development of a gain-of-function platform, termed "iFOX (inducible Full-length cDNA OvereXpressor gene)-Hunting", for inducible expression of B. napus seed cDNAs in Arabidopsis. A Gateway-compatible plant gene expression vector containing a methoxyfenozide-inducible constitutive promoter for transgene expression was developed. This vector was used for cloning of random cDNAs from developing B...
July 17, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28710840/characterization-of-scientific-studies-usually-cited-as-evidence-of-adverse-effects-of-gm-food-feed
#3
REVIEW
M A Sánchez, W A Parrott
GM crops are the most studied crops in history. Approximately 5% of the safety studies on them show adverse effects that are a cause for concern, and tend to be featured in media reports. Although these reports are based on just a handful of GM events, they are used to cast doubt on all GM crops. Furthermore, they tend to come from just a few laboratories and are published in less important journals. Importantly, a close examination of these reports invariably shows methodological flaws that invalidate any conclusions of adverse effects...
July 15, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28710796/plant-produced-zika-virus-envelope-protein-elicits-neutralizing-immune-responses-that-correlate-with-protective-immunity-against-zika-virus-in-mice
#4
Ming Yang, Haiyan Sun, Huafang Lai, Jonathan Hurtado, Qiang Chen
The global Zika virus (ZIKV) outbreak and its link to fetal and newborn microcephaly and severe neurological complications in adults call for the urgent development of ZIKV vaccines. In response, we developed a subunit vaccine based on the ZIKV envelope (E) protein and investigated its immunogenicity in mice. Transient expression of ZIKV E (zE) resulted in its rapid accumulation in leaves of Nicotiana benthamiana plants. Biochemical analysis revealed that plant-produced ZIKV E (PzE) exhibited specific binding to a panel of monoclonal antibodies that recognize various zE conformational epitopes...
July 15, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28710782/identification-and-functional-analysis-of-two-p450-enzymes-of-gossypium-hirsutum-involved-in-dmnt-and-tmtt-biosynthesis
#5
Danfeng Liu, Xinzheng Huang, Weixia Jing, Xingkui An, Qiang Zhang, Hong Zhang, Jingjiang Zhou, Yongjun Zhang, Yuyuan Guo
The homoterpenes (3E)-4,8-dimethyl-1,3,7-nonatriene (DMNT) and (E,E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene (TMTT) are major herbivore-induced plant volatiles (HIPV) that can attract predatory or parasitic arthropods to protect injured plants from herbivore attack. In the present study, DMNT and TMTT were confirmed to be emitted from cotton (Gossypium hirsutum) plants infested with chewing caterpillars or sucking bugs. Two CYP genes (GhCYP82L1 and GhCYP82L2) involved in homoterpene biosynthesis in G. hirsutum were newly identified and characterized...
July 15, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28703352/atpds-over-expression-in-tomato-exposing-unique-patterns-of-carotenoid-self-regulation-and-an-alternative-strategy-for-the-enhancement-of-fruit-carotenoid-content
#6
Ryan P McQuinn, Breanna Wong, James J Giovannoni
The regulation of plant carotenogenesis is an active research area for both biological discovery and practical implementation. In tomato (Solanum lycopersicum) we demonstrate additional bottlenecks exist in the poly-cis-transformation of phytoene to lycopene in the context of ripening-induced PSY1 expression and activity, and reveal phytoene desaturase (PDS), as a target for manipulation toward elevated lycopene content in maturing tomato fruit. Over-expression of Arabidopsis PDS, AtPDS, elevated PDS transcript abundance in all aerial tissues resulting in both altered carotenoid accumulation and associated pathway gene expression in a tissue-specific manner...
July 13, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28688132/crispr-s-an-active-interference-element-for-a-rapid-and-inexpensive-selection-of-genome-edited-transgene-free-rice-plants
#7
Hai-Ping Lu, Song-Mei Liu, Shou-Ling Xu, Wu-Yang Chen, Xin Zhou, Yuan-Yuan Tan, Jian-Zhong Huang, Qing-Yao Shu
The CRISPR/Cas9-based genome editing tool has been used in diverse applications related to plant research, including for crop improvement (Sun et al., 2016; Liu et al., 2017). Mutant plants may be generated via transient transformations or DNA-free editing (Liang et al., 2017). However, plant genomes are often edited during the production of transgenic plants, in a process that involves the identification of targeted edits in regenerated T0 plants and the subsequent elimination of transgenes in T1 plants (Sun et al...
July 8, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28682500/direct-and-tunable-modulation-of-protein-levels-in-rice-and-wheat-with-a-synthetic-small-molecule
#8
Jingbo Zhang, Kangquan Yin, Juan Sun, Jinlan Gao, Qiuli Du, Huali Li, Jin-Long Qiu
Direct control of protein level enables rapid and efficient analyses of gene functions in crops. Previously, we developed the RDDK-Shield1 (Shld1) system in the model plant Arabidopsis thaliana for direct modulation of protein stabilization using a synthetic small molecule. However, it was unclear whether this system is applicable to economically important crops. In this study we show that the RDDK-Shld1 system enables rapid and tunable control of protein levels in rice and wheat. Accumulation of RDDK-fusion proteins can be reversibly and spatio-temporally controlled by the synthetic small-molecule Shld1...
July 6, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28678349/construction-of-a-multi-control-sterility-system-for-a-maize-male-sterile-line-and-hybrid-seed-production-based-on-the-zmms7-gene-encoding-a-phd-finger-transcription-factor
#9
Danfeng Zhang, Suowei Wu, Xueli An, Ke Xie, Yan Zhou, Liwen Xu, Wen Fang, Shensi Liu, Shuangshuang Liu, Taotao Zhu, Jinping Li, Liqun Rao, Jiuran Zhao, Xiangyuan Wan
Although hundreds of genetic male sterility (GMS) mutants have been identified in maize, few are commercially used due to a lack of effective methods to produce large quantities of pure male-sterile seeds. Here, we develop a multi-control sterility (MCS) system based on the maize male sterility 7 (ms7) mutant and its wild-type Zea mays Male sterility 7 (ZmMs7) gene via a transgenic strategy, leading to the utilization of GMS in hybrid seed production. ZmMs7 is isolated by a map-based cloning approach, and encodes a PHD-finger transcription factor orthologous to rice PTC1 and Arabidopsis MS1...
July 5, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28664596/overexpression-and-cosuppression-of-xylem-related-genes-in-an-early-xylem-differentiation-stage-specific-manner-by-the-atted4-promoter
#10
Satoshi Endo, Kuninori Iwamoto, Hiroo Fukuda
Tissue-specific overexpression of useful genes, which we can design according to their cause-and-effect relationships, often gives valuable gain-of-function phenotypes. In order to develop genetic tools in woody biomass engineering, we produced a collection of Arabidopsis lines that possess chimeric genes of a promoter of an early xylem differentiation stage-specific gene, Arabidopsis Tracheary Element Differentiation-related 4 (AtTED4) and late xylem development-associated genes, many of which are uncharacterized...
June 30, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28658532/genetically-encoded-calcium-indicators-for-fluorescence-imaging-in-the-moss-physcomitrella-gcamp3-provides-a-bright-new-look
#11
Thomas J Kleist, Heather N Cartwright, Adele M Perera, Michael L Christianson, Peggy G Lemaux, Sheng Luan
The moss Physcomitrella patens is emerging as a model organism due to the availability of established protocols for precise genome engineering by homologous recombination and a high-quality genome sequence (Rensing et al., 2008). Physcomitrella is an attractive system for cell biology and live cell imaging and has been used to investigate fundamental cellular processes such as tip growth, vesicle trafficking, and cytoskeletal dynamics (e.g., Furt et al., 2012). In each of these processes, calcium (Ca(2+) ) acts as an important signal to relay developmental and environmental cues...
June 28, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28650085/immunogenicity-of-plant-produced-african-horse-sickness-virus-like-particles-implications-for-a-novel-vaccine
#12
Susan J Dennis, Ann E Meyers, Alan J Guthrie, Inga I Hitzeroth, Edward P Rybicki
African horse sickness (AHS) is a debilitating and often fatal viral disease affecting horses in much of Africa, caused by the dsRNA orbivirus African horse sickness virus (AHSV). Vaccination remains the single most effective weapon in combatting AHS, as there is no treatment for the disease apart from good animal husbandry. However, the only commercially available vaccine is a live attenuated version of the virus (LAV). The threat of outbreaks of the disease outside its endemic region and the fact that the LAV is not licensed for use elsewhere in the world, have spurred attempts to develop an alternative safer, yet cost-effective recombinant vaccine...
June 26, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640983/multiplexed-crispr-cas9-mediated-metabolic-engineering-of-%C3%AE-aminobutyric-acid-levels-in-solanum-lycopersicum
#13
Rui Li, Ran Li, Xindi Li, Daqi Fu, Benzhong Zhu, Huiqin Tian, Yunbo Luo, Hongliang Zhu
In recent years, the type II CRISPR system has become a widely used and robust technique to implement site-directed mutagenesis in a variety of species including model and crop plants. However, few studies manipulated metabolic pathways in plants using the CRISPR system. Here, we introduced the pYLCRISPR/Cas9 system with one or two single-site guide RNAs to target the tomato phytoene desaturase gene. An obvious albino phenotype was observed in T0 regenerated plants, and more than 61% of the desired target sites were edited...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640975/nac-transcription-factor-jungbrunnen1-enhances-drought-tolerance-in-tomato
#14
Venkatesh P Thirumalaikumar, Vikas Devkar, Nikolay Mehterov, Shawkat Ali, Rengin Ozgur, Ismail Turkan, Bernd Mueller-Roeber, Salma Balazadeh
Water deficit (drought stress) massively restricts plant growth and the yield of crops; reducing the deleterious effects of drought is therefore of high agricultural relevance. Drought triggers diverse cellular processes including the inhibition of photosynthesis, the accumulation of cell-damaging reactive oxygen species, and gene expression reprogramming, besides others. Transcription factors (TF) are central regulators of transcriptional reprogramming and expression of many TF genes is affected by drought, including members of the NAC family...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640974/resistance-to-powdery-mildew8-1-boosts-pattern-triggered-immunity-against-multiple-pathogens-in-arabidopsis-and-rice
#15
Yan Li, Yong Zhang, Qing-Xia Wang, Ting-Ting Wang, Xiao-Long Cao, Zhi-Xue Zhao, Sheng-Li Zhao, Yong-Ju Xu, Zhi-Yuan Xiao, Jin-Lu Li, Jing Fan, Hui Yang, Fu Huang, Shunyuan Xiao, Wen-Ming Wang
The Arabidopsis gene RESISTANCE TO POWDERY MILDEW8.1 (RPW8.1) confers resistance to virulent fungal and oomycete pathogens that cause powdery mildew and downy mildew, respectively. However, the underlying mechanism remains unclear. Here, we show that ectopic expression of RPW8.1 boosts pattern-triggered immunity (PTI) resulting in enhanced resistance against different pathogens in both Arabidopsis and rice. In Arabidopsis, transcriptome analysis revealed that ectopic expression of RPW8.1-YFP constitutively up-regulates expression of many pathogen-associated molecular pattern-(PAMP-) inducible genes...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640973/production-of-red-flowered-oilseed-rape-via-the-ectopic-expression-of-orychophragmus-violaceus-ovpap2
#16
Wenqin Fu, Daozong Chen, Qi Pan, Fengfeng Li, Zhigang Zhao, Xianhong Ge, Zaiyun Li
Oilseed rape (Brassica napus L.), which has yellow flowers, is both an important oil crop and a traditional tourism resource in China, whereas the Orychophragmus violaceus, which has purple flowers, likely possesses a candidate gene or genes to alter the flower color of oilseed rape. A previously established B. napus line has a particular pair of O. violaceus chromosomes (M4) and exhibits slightly red petals. In this study, the transcriptomic analysis of M4, B. napus (H3), and O. violaceus with purple petals (OvP) and with white petals (OvW) revealed that most anthocyanin biosynthesis genes were up-regulated in both M4 and OvP...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640964/targeted-mutagenesis-in-tetraploid-switchgrass-panicum-virgatum-l-using-crispr-cas9
#17
Yang Liu, Paul Merrick, Zhengzhi Zhang, Chonghui Ji, Bing Yang, Shui-Zhang Fei
The CRISPR/Cas9 system has become a powerful tool for targeted mutagenesis. Switchgrass (Panicum virgatum L.) is a high yielding perennial grass species that has been designated as a model biomass crop by the U.S. Department of Energy. The self infertility and high ploidy level make it difficult to study gene function or improve germplasm. To overcome these constraints, we explored the feasibility of using CRISPR/Cas9 for targeted mutagenesis in a tetraploid cultivar 'Alamo' switchgrass. We first developed a transient assay by which a non-functional green fluorescent protein gene containing a 1 bp frameshift insertion in its 5' coding region was successfully mutated by a Cas9/sgRNA complex resulting in its restored function...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640955/in-solution-antibody-harvesting-with-a-plant-produced-hydrophobin-protein-a-fusion
#18
Katri Kurppa, Lauri Reuter, Anneli Ritala, Markus Linder, Jussi Joensuu
Purification is a bottleneck and a major cost factor in the production of antibodies. We set out to engineer a bi-functional fusion protein from two building blocks, Protein A and a hydrophobin, aiming at low-cost and scalable antibody capturing in solutions. Immunoglobulin-binding Protein A is widely used in affinity-based purification. The hydrophobin fusion tag, on the other hand, has been shown to enable purification by two-phase separation. Protein A was fused to two different hydrophobin tags, HFBI or II, and expressed transiently in Nicotiana benthamiana...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640945/production-of-human-vitronectin-in-nicotiana-benthamiana-using-the-inpact-hyper-expression-platform
#19
Benjamin Dugdale, Maiko Kato, Pradeep Deo, Manuel Plan, Mark Harrison, Robyn Lloyd, Terry Walsh, Robert Harding, James Dale
Human vitronectin (hVN) is a glycoprotein that functions as a cell adhesion molecule and a regulator of coagulation in blood plasma and the extracellular matrix. In vitro, hVN is added to serum-free media in order to promote the adhesion of animal cells to tissue culture surfaces and the proliferation of undifferentiated stem cells. Here, we report the production of hVN in Nicotiana benthamiana using the inducible In Plant Activation (INPACT) hyper-expression platform. N. benthamiana plants were transformed with an INPACT expression cassette encoding hVN, and both the Tobacco yellow dwarf virus Rep/RepA activator and Tomato bushy stunt virus p19 gene under the transcriptional control of the ethanol-inducible AlcR:alcA gene switch...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640934/substrate-specificity-and-safener-inducibility-of-the-plant-udp-glucose-dependent-family-1-glycosyltransferases-super-family
#20
Melissa Brazier-Hicks, Markus Gershater, David Dixon, Robert Edwards
Plants contain large numbers of family 1 UDP-glucose dependent glycosyltransferases (UGTs), including members that conjugate xenobiotics. Arabidopsis contains 107 UGT genes with 99 family members successfully expressed as glutathione transferase (GST)-fusion proteins in E.coli. A high-throughput catalytic screen was developed based on quantification of the fusion by measuring GST activity. UGT activity using UDP-glucose as donor was then determined using 11 synthetic acceptors bearing hydroxyl, amino and thiol groups that had been shown to undergo conjugation in plant extracts...
June 22, 2017: Plant Biotechnology Journal
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