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Plant Biotechnology Journal

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https://www.readbyqxmd.com/read/29431919/host-induced-gene-silencing-of-a-regulator-of-g-protein-signaling-gene-vdrgs1-confers-resistance-to-verticillium-wilt-in-cotton
#1
Jun Xu, Xinyu Wang, Yongqing Li, Jianguo Zeng, Guilin Wang, Chaoyang Deng, Wangzhen Guo
Verticillium wilt (VW), caused by soil-borne fungi of the genus Verticillium, is a serious disease affecting a wide range of plants and leading to a constant and major challenge to agriculture worldwide. Cotton (Gossypium hirsutum) is the world's most important natural textile fiber and oil crop. VW of cotton is a highly devastating vascular disease, however, few resistant germplasms have been reported in cotton. An increasing number of studies have shown that RNA interference (RNAi) based host-induced gene silencing (HIGS) is an effective strategy for improving plant resistance to pathogens by silencing genes essential for the pathogenicity of these pathogens...
February 12, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29431900/deciphering-drought-induced-metabolic-responses-and-regulation-in-developing-maize-kernels
#2
Liming Yang, Jake C Fountain, Pingsheng Ji, Xinzhi Ni, Sixue Chen, Robert D Lee, Robert C Kemerait, Baozhu Guo
Drought stress conditions decrease maize growth and yield, and aggravate pre-harvest aflatoxin contamination. While several studies have been performed on mature kernels responding to drought stress, the metabolic profiles of developing kernels are not as well characterized, particularly in germplasm with contrasting resistance to both drought and mycotoxin contamination. Here, following screening for drought tolerance, a drought-sensitive line, B73, and a drought-tolerant line, Lo964, were selected and stressed beginning at 14 days after pollination...
February 12, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29412503/transcriptome-wide-comparison-of-selenium-hyperaccumulator-and-non-accumulator-stanleya-species-provides-new-insight-into-key-processes-mediating-the-hyperaccumulation-syndrome
#3
Jiameng Wang, Jennifer J Cappa, Jonathan P Harris, Patrick P Edger, Wen Zhou, J Chris Pires, Michael Adair, Sarah A Unruh, Mark P Simmons, Michela Schiavon, Elizabeth A H Pilon-Smits
To obtain better insight into the mechanisms of selenium hyperaccumulation in Stanleya pinnata, transcriptome-wide differences in root and shoot gene expression levels were investigated in S. pinnata and related nonaccumulator Stanleya elata grown with or without 20 μM selenate. Genes predicted to be involved in sulfate/selenate transport and assimilation or in oxidative stress resistance (glutathione-related genes and peroxidases) were among the most differentially expressed between species; many showed constitutively elevated expression in S...
February 7, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29406604/allelic-variation-for-broad-spectrum-resistance-and-susceptibility-to-bacterial-pathogens-identified-in-a-rice-magic-population
#4
Ana M Bossa-Castro, Cheick Tekete, Chitra Raghavan, Emily E Delorean, Alexis Dereeper, Karim Dagno, Ousmane Koita, Gloria Mosquera, Hei Leung, Valérie Verdier, Jan E Leach
Quantitative trait loci (QTL) that confer broad-spectrum resistance (BSR), or resistance that is effective against multiple and diverse plant pathogens, have been elusive targets of crop breeding programs. Multi-parent Advanced Generation Inter-Cross (MAGIC) populations, with their diverse genetic composition and high levels of recombination, are potential resources for identification of QTL for BSR. In this study, a rice MAGIC population was used to map QTL conferring BSR to two major rice diseases, bacterial leaf streak (BLS) and bacterial blight (BB), caused by Xanthomonas oryzae pathovars (pv...
February 6, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29406575/pechyr1-a-ubiquitin-e3-ligase-from-populus-euphratica-enhances-drought-tolerance-via-aba-induced-stomatal-closure-by-ros-production-in-populus
#5
Fang He, Hou-Ling Wang, Hui-Guang Li, Yanyan Su, Shuang Li, Yanli Yang, Cong-Hua Feng, Weilun Yin, Xinli Xia
Drought, a primary abiotic stress, seriously affects plant growth and productivity. Stomata play a vital role in regulating gas exchange and drought adaptation. However, limited knowledge exists of the molecular mechanisms underlying stomatal movement in trees. Here, PeCHYR1, a ubiquitin E3 ligase, was isolated from Populus euphratica, a model of stress adaptation in forest trees. PeCHYR1 was preferentially expressed in young leaves and was significantly induced by ABA (abscisic acid) and dehydration treatments...
February 6, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29406565/qtl-mapping-and-gwas-reveal-candidate-genes-controlling-capsaicinoid-content-in-capsicum
#6
Koeun Han, Hea-Young Lee, Na-Young Ro, On-Sook Hur, Joung-Ho Lee, Jin-Kyung Kwon, Byoung-Cheorl Kang
Capsaicinoids are unique compounds produced only in peppers (Capsicum spp.). Several studies using classical quantitative trait loci (QTL) mapping and genome-wide association studies (GWAS) have identified QTLs controlling capsaicinoid content in peppers; however, neither the QTLs common to each population nor the candidate genes underlying them have been identified due to the limitations of each approach used. Here, we performed QTL mapping and GWAS for capsaicinoid content in peppers using two recombinant inbred line (RIL) populations and one GWAS population...
February 6, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29377467/wrky1-acts-as-a-key-component-improving-resistance-against-alternaria-solani-in-wild-tomato-solanum-arcanum-peralta
#7
Balkrishna A Shinde, Bhushan B Dholakia, Khalid Hussain, Asaph Aharoni, Ashok P Giri, Avinash C Kamble
Early blight (EB), caused by Alternaria solani, is a major threat to global tomato production. In comparison to cultivated tomato (Solanum lycopersicum), a wild relative, S. arcanum exhibits strong resistance against EB. However, molecular cascades operating during EB resistance in wild or cultivated tomato plants are largely obscure. Here, we provide novel insight on spatio-temporal molecular events in S. arcanum against A. solani. Transcriptome and co-expression analysis presented 33-WRKYs as promising candidates of which 12 SaWRKYs displayed differential expression patterns in resistant and susceptible accessions during EB disease progression...
January 29, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29377445/grapevine-vppr10-1-functions-in%C3%A2-resistance-to-plasmopara-viticola-through-triggering-a-cell-death-like-defense-response-by-interacting-with-vpvdac3
#8
Hui Ma, Gaoqing Xiang, Zhiqian Li, Yuting Wang, Mengru Dou, Li Su, Xiao Yin, Ruiqi Liu, Yuejin Wang, Yan Xu
As one of the most serious diseases in grape, downy mildew caused by Plasmopara viticola is a worldwide grape disease. Much effort has been focused on improving susceptible grapevine' resistance and wild resistant grapevine species are important for germplasm improvement of commercial cultivars. Using yeast two-hybrid screen followed by a series of immunoprecipitation experiments, we identified Voltage-dependent Anion Channel 3 (VDAC3) protein from Vitis piasezkii 'Liuba-8' as an interacting partner of VpPR10...
January 29, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29356349/rice-copine-genes-osbon1-and-osbon3-function-as-suppressors-of-broad-spectrum-disease-resistance
#9
Xin Yin, Baohong Zou, Xuexue Hong, Mingjun Gao, Weibing Yang, Xiangbin Zhong, Yang He, Peng Kuai, Yonggen Lou, Jirong Huang, Jian Hua, Zuhua He
Breeding for disease resistance is the most effective strategy to control diseases, particularly with broad-spectrum disease resistance in many crops. However, knowledge on genes and mechanism of broad-spectrum resistance and tradeoff between defense and growth in crops is limited. Here, we show that the rice copine genes OsBON1 and OsBON3 are critical suppressors of immunity. Both OsBON1 and OsBON3 changed their protein subcellular localization upon pathogen challenge. Knockdown of OsBON1 and dominant negative mutant of OsBON3 enhanced resistance to rice bacterial and fungal pathogens with either hemibiotrophic or necrotrophic life styles...
January 22, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29356296/beyond-pathways-genetic-dissection-of-tocopherol-content-in-maize-kernels-by-combining-linkage-and-association-analyses
#10
Hong Wang, Shutu Xu, Yaming Fan, Nannan Liu, Wei Zhan, Haijun Liu, Yingjie Xiao, Kun Li, Qingchun Pan, Wenqiang Li, Min Deng, Jie Liu, Min Jin, Xiaohong Yang, Jiansheng Li, Qing Li, Jianbing Yan
Although tocopherols play an important role in plants and animals, the genetic architecture of tocopherol content in maize kernels has remained largely unknown. In this study, linkage and association analyses were conducted to examine the genetic architecture of tocopherol content in maize kernels. Forty-one unique quantitative trait loci (QTLs) were identified by linkage mapping in six populations of recombinant inbred lines (RILs). In addition, 32 significant loci were detected via genome-wide association study (GWAS), 18 of which co-localized with the QTLs identified by linkage mapping...
January 21, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29345800/haplotype-based-genotyping-by-sequencing-in-oat-genome-research
#11
Wubishet A Bekele, Charlene P Wight, Shiaoman Chao, Catherine J Howarth, Nicholas A Tinker
In a de-novo genotyping-by-sequencing (GBS) analysis of short, 64-base tag-level haplotypes in 4657 accessions of cultivated oat, we discovered 164741 tag-level (TL) genetic variants containing 241224 SNPs. From this, the marker-density of an oat consensus map was increased by the addition of more than 70000 loci. The mapped TL genotypes of a 635-line diversity panel were used to infer chromosome-level (CL) haplotype maps. These maps revealed differences in the number and size of haplotype blocks, as well as differences in haplotype diversity between chromosomes and subsets of the diversity panel...
January 18, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29345105/modulates-brassinosteroids-mediated-growth-regulation-and-influences-architecture-and-grain-shape
#12
Yan-Jie Zhang, Yu Zhang, Liang-Li Zhang, Hui-Ya Huang, Bao-Jun Yang, Sheng Luan, Hong-Wei Xue, Wen-Hui Lin
Rice (Oryza sativa) is the most important crop and feeds more than half of the world population. The architecture of rice, including height, leaf inclination, and tiller number, is important for rice planting and yield. Plant hormone, brassinosteroids (BR), plays crucial roles in modulating plant architecture and seed yield. But BR cannot be applied in agriculture production directly because BR regulated multiple processes and could not be transcriptional regulated in different tissues. This article is protected by copyright...
January 18, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29337409/engineering-of-purple-embryo-maize-with-a-multigene-expression-system-derived-from-a-bidirectional-promoter-and-self-cleaving-2a-peptides
#13
Xiaoqing Liu, Wenzhu Yang, Bona Mu, Suzhen Li, Ye Li, Xiaojin Zhou, Chunyi Zhang, Yunliu Fan, Rumei Chen
Anthocyanins are polyhydroxy and polymethoxy 2-phenylbenzopyrylium glucosides that belong to a large group of plant secondary metabolites termed flavonoids. The most common anthocyanidins (anthocyanin aglycones) in higher plants are cyanidin, pelargonidin, peonidin, delphinidin, petunidin and malvidin. Flavonoid biosynthesis has been suggested to occur on the cytoplasmic face of the endoplasmic reticulum (ER), where sequential enzymes of the pathway loosely form a metabolon (Winkel-Shirley, 1999). Known structural genes along the anthocyanin biosynthesis pathway in maize include chalcone synthase (CHS), chalcone isomerase (CHI), flavanone 3-hydroxylase (F3H), flavonoid 3'-hydroxylase (F3'H), dihydroflavonol 4-reductase (DFR), anthocyanidin synthase (ANS), flavonoid 3-O-glucosyltransferase (3UFGT) and glutathione S-transferase (GST)...
January 16, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29331089/modification-of-chrysanthemum-odour-and-taste-with-chrysanthemol-synthase-induces-strong-dual-resistance-against-cotton-aphids
#14
Hao Hu, Jinjin Li, Thierry Delatte, Jacques Vervoort, Liping Gao, Francel Verstappen, Wei Xiong, Jianping Gan, Maarten A Jongsma, Caiyun Wang
Aphids are pests of chrysanthemum that employ plant volatiles to select host plants and ingest cell contents to probe host quality before engaging in prolonged feeding and reproduction. Changes in volatile and non-volatile metabolite profiles can disrupt aphid-plant interactions and provide new methods of pest control. Chrysanthemol synthase (CHS) from Tanacetum cinerariifolium, represents the first committed step in the biosynthesis of pyrethrin ester insecticides, but no biological role for the chrysanthemol product alone has yet been documented...
January 13, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29331085/verification-of-dna-motifs-in-arabidopsis-using-crispr-cas9-mediated-mutagenesis
#15
Chenlong Li, Chen Chen, Huhui Chen, Suikang Wang, Xuemei Chen, Yuhai Cui
Transcription factors (TFs) and chromatin-modifying factors (CMFs) access chromatin by recognizing specific DNA motifs in their target genes. Chromatin Immunoprecipitation followed by next generation sequencing (ChIP-seq) has been widely used to discover the potential DNA binding motifs for both TFs and CMFs. Yet, an in vivo method for verifying DNA motifs captured by ChIP-seq is lacking in plants. Here, we describe the use of clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated 9 (Cas9) to verify DNA motifs in their native genomic context in Arabidopsis...
January 13, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29331077/optimized-paired-sgrna-cas9-cloning-and-expression-cassette-triggers-high-efficiency-multiplex-genome-editing-in-kiwifruit
#16
Zupeng Wang, Shuaibin Wang, Dawei Li, Qiong Zhang, Li Li, Caihong Zhong, Yifei Liu, Hongwen Huang
Kiwifruit is an important fruit crop; however, technologies for its functional genomic and molecular improvement are limited. The clustered regulatory interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein (Cas) system has been successfully applied to genetic improvement in many crops, but its editing capability is variable depending on the different combinations of the synthetic guide RNA (sgRNA) and Cas9 protein expression devices. Optimizing conditions for its use within a particular species is therefore needed to achieve highly efficient genome editing...
January 13, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29327510/zmstk1-and-zmstk2-encoding-receptor-like-cytoplasmic-kinase-are-involved-in-maize-pollen-development-with-additive-effect
#17
Mingxia Fan, Chunyu Zhang, Lei Shi, Chen Liu, Wenjuan Ma, Meiming Chen, Kuichen Liu, Fengchun Cai, Guohong Wang, Zhengyi Wei, Min Jiang, Zaochang Liu, Ansar Javeed, Feng Lin
Pollen germination and pollen tube growth are important physiological processes of sexual reproduction of plants, and also are involved in signal transduction. Our previous study reveals that ZmSTK1 and ZmSTK2 are two receptor-like cytoplasmic kinases (RLCK) homologs in Zea mays as members of receptor-like protein kinase (RLK) subfamily, sharing 86% identity at the amino acid level. Here, we report that ZmSTK1 and ZmSTK2, expressed at late stages of pollen development, regulate maize pollen development with additive effect...
January 11, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29327444/developing-a-flexible-high-efficiency-agrobacterium-mediated-sorghum-transformation-system-with-broad-application
#18
Ping Che, Ajith Anand, Emily Wu, Jeffry D Sander, Marissa K Simon, Weiwei Zhu, Amy L Sigmund, Gina Zastrow-Hayes, Michael Miller, Donglong Liu, Shai J Lawit, Zuo-Yu Zhao, Marc C Albertsen, Todd J Jones
Sorghum is the fifth most widely planted cereal crop in the world and is commonly cultivated in arid and semi-arid regions such as Africa. Despite its importance as a food source, sorghum genetic improvement through transgenic approaches has been limited because of an inefficient transformation system. Here we report a ternary vector (also known as co-habitating vector) system using a recently described pVIR accessory plasmid that facilitates efficient Agrobacterium-mediated transformation of sorghum. We report regeneration frequencies ranging from 6-29% in Tx430 using different selectable markers and single copy, backbone free "quality events" ranging from 45-66% of the total events produced...
January 11, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29327440/a-maize-phytochrome-interacting-factors-protein-zmpif1-enhances-drought-tolerance-by-inducing-stomatal-closure-and-improves-grain-yield-in-oryza-sativa
#19
Yong Gao, Meiqin Wu, Mengjiao Zhang, Wei Jiang, Xiaoyun Ren, Enxing Liang, Dongping Zhang, Changquan Zhang, Ning Xiao, Yan Li, Yi Dai, Jianmin Chen
Phytochrome-interacting factors (PIFs) play major roles in regulating plant growth and development, but their roles in drought stress remain elusive. Here, we cloned and characterized a maize (Zea mays) PIF transcription factor, ZmPIF1. The expression level of ZmPIF1 was significantly induced by independent drought and abscisic acid (ABA) treatments. The ZmPIF1 transgenic rice and Arabidopsis displayed water-saving and drought-resistance, which were associated with reduced a stomatal aperture and transpiration rate...
January 11, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29327438/establishing-rna-virus-resistance-in-plants-by-harnessing-crispr-immune-system
#20
Tong Zhang, Qiufeng Zheng, Xin Yi, Hong An, Yaling Zhao, Siqi Ma, Guohui Zhou
Recently, CRISPR-Cas (clustered, regularly interspaced short palindromic repeats-CRISPR associated proteins) system has been used to produce plants resistant to DNA virus infections. However, there is no RNA virus control method in plants that uses CRISPR-Cas system to target the viral genome directly. Here we reprogrammed the CRISPR-Cas9 system from Francisella novicida to confer molecular immunity against RNA viruses in Nicotiana benthamiana and Arabidopsis plants. Plants expressing FnCas9 and sgRNA specific for the cucumber mosaic virus (CMV) or tobacco mosaic virus (TMV) exhibited significantly attenuated virus infection symptoms and reduced viral RNA accumulation...
January 11, 2018: Plant Biotechnology Journal
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