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Plant Cell Reports

Abhishek Kumar, Anamika Singh, Madhusmita Panigrahy, Pratap Kumar Sahoo, Kishore C S Panigrahi
Inclusion of carbon nanoparticles in growth medium accelerates timing to flower by down-regulating phytochrome B in a CONSTANS-independent but photoperiod-dependent manner in Arabidopsis thaliana. Despite the recognized importance of nanoparticles in plant development over the last decade, the effect of carbon nanoparticles (CNPs) on plant processes such as photomorphogenesis and flowering time control is poorly understood. We explored the uptake, accumulation and effect of CNPs on seedling development and flowering time control in Arabidopsis thaliana (At)...
March 14, 2018: Plant Cell Reports
Cao Son Trinh, Hyeri Lee, Won Je Lee, Seok Jin Lee, Namhyun Chung, Juhyeong Han, Jongyun Kim, Suk-Whan Hong, Hojoung Lee
Pseudomonas nitroreducens: strain IHB B 13561 (PnIHB) enhances the growth of Arabidopsis thaliana and Lactuca sativa via the stimulation of cell development and nitrate absorption. Plant growth-promoting rhizobacteria (PGPR) enhance plant development through various mechanisms; they improve the uptake of soil resources by plants to greatly promote plant growth. Here, we used Arabidopsis thaliana seedlings and Lactuca sativa to screen the growth enhancement activities of a purified PGPR, Pseudomonas nitroreducens strain IHB B 13561 (PnIHB)...
March 14, 2018: Plant Cell Reports
P K Christova, N K Christov, P V Mladenov, R Imai
Expression of the TaMDC1 in transgenic tomato plants confer resistance to bacterial and fungal pathogens, as well as an insect pest and thus prove in planta function of the wheat cystatin. Cystatins are the polypeptides with cysteine proteinase inhibitory activities. Plant cystatins or phytocystatins are known to contribute to plant resistance against insect pests. Recently, increasing data proved that some of the phytocystatins also have antifungal activities in vitro. Here, we functionally characterized a wheat multidomain cystatin, TaMDC1, using in planta assays...
March 12, 2018: Plant Cell Reports
Ryuya Kohata, Kosuke Koitabashi, Hiroyasu Kitashiba, Takeshi Nishio
We developed a method for detection of mutants in a large number of plants, and found this method to be applicable to detection of a mutant allele at a concentration of 1/1000. Many techniques for SNP analysis have been developed, but most of these techniques are not so sensitive to be used for detection of mutants in a large number of plants. Although some highly sensitive methods of SNP analysis have been reported, they are costly. In the present study, a method for concentrating mutant DNA was examined for sensitive detection of an SNP allele in a bulked DNA sample...
March 12, 2018: Plant Cell Reports
Misa Matsuda, Yuji Iwata, Nozomu Koizumi, Kei-Ichiro Mishiba
DSBs differently affect endoreduplication and organ size in radish cotyledons and hypocotyls in different light conditions, suggesting that DSBs-mediated endoreduplication varies based on different developmental and environmental cues. Endoreduplication induced by DNA double strand breaks (DSBs) in Arabidopsis thaliana roots and cultured cells has been reported in recent years. In this study, we investigated whether DSBs-mediated endoreduplication also occurs in other tissues, such as cotyledons and hypocotyls of radish (Raphanus sativus var...
March 12, 2018: Plant Cell Reports
Yu Yan, Xinyi He, Wei Hu, Guoyin Liu, Peng Wang, Chaozu He, Haitao Shi
MeCIPK23 interacts with MeCBL1/9, and they confer improved defense response, providing potential genes for further genetic breeding in cassava. Cassava (Manihot esculenta) is an important food crop in tropical area, but its production is largely affected by cassava bacterial blight. However, the information of defense-related genes in cassava is very limited. Calcium ions play essential roles in plant development and stress signaling pathways. Calcineurin B-like proteins (CBLs) and CBL-interacting protein kinases (CIPKs) are crucial components of calcium signals...
March 9, 2018: Plant Cell Reports
Ayan Das, Prithwi Ghosh, Sampa Das
Transgenic Brassica juncea plants expressing Colocasia esculenta tuber agglutinin (CEA) shows the non-allergenic nature of the expressed protein leading to enhanced mortality and reduced fecundity of mustard aphid-Lipaphis erysimi. Lipaphis erysimi (common name: mustard aphid) is the most devastating sucking insect pest of Indian mustard (Brassica juncea L.). Colocasia esculenta tuber agglutinin (CEA), a GNA (Galanthus nivalis agglutinin)-related lectin has previously been reported by the present group to be effective against a wide array of hemipteran insects in artificial diet-based bioassays...
March 8, 2018: Plant Cell Reports
Hang Su, Yun-Tong Jiao, Fang-Fang Wang, Yue-E Liu, Wei-Li Niu, Guo-Tian Liu, Yan Xu
Putrescine and spermidine increase the transformation efficiency of Vitis vinifera L. cv. Thompson seedless. Accumulation of VpPR10.1 in transgenic V. vinifera Thompson seedless, likely increases its resistance to downy mildew. A more efficient method is described for facilitating Agrobacterium-mediated transformation of Vitis vinifera L. cv. Thompson Seedless somatic embryogenesis using polyamines (PAs). The efficacies of putrescine, spermidine and spermine are identified at a range of concentrations (10 µM, 100 µM and 1 mM) added to the culture medium during somatic embryo growth...
March 6, 2018: Plant Cell Reports
Eric Poliner, Eva M Farré, Christoph Benning
Nannochloropsis is a genus of fast-growing microalgae that are regularly used for biotechnology applications. Nannochloropsis species have a high triacylglycerol content and their polar lipids are rich in the omega-3 long-chain polyunsaturated fatty acid, eicosapentaenoic acid. Placed in the heterokont lineage, the Nannochloropsis genus has a complex evolutionary history. Genome sequences are available for several species, and a number of transcriptomic datasets have been produced, making this genus a facile model for comparative genomics...
March 6, 2018: Plant Cell Reports
Petr Klíma, Martina Laňková, Filip Vandenbussche, Dominique Van Der Straeten, Jan Petrášek
Silver ions increase plasma membrane permeability for water and small organic compounds through their stimulatory effect on plasma membrane calcium channels, with subsequent modulation of intracellular calcium levels and ion homeostasis. The action of silver ions at the plant plasma membrane is largely connected with the inhibition of ethylene signalling thanks to the ability of silver ion to replace the copper cofactor in the ethylene receptor. A link coupling the action of silver ions and cellular auxin efflux has been suggested earlier by their possible direct interaction with auxin efflux carriers or by influencing plasma membrane permeability...
March 3, 2018: Plant Cell Reports
Peng-Fei Chen, Lin Chen, Zheng-Rong Jiang, Gao-Peng Wang, Shao-Hua Wang, Yan-Feng Ding
Sucrose signaling pathways were rapidly induced in response to early iron deficiency in rice plants, and the change of sucrose contents in plants was essential for the activation of iron deficiency responses. Sucrose is the main product of photosynthesis in plants, and it functions not only as an energy metabolite but also a signal molecule. However, a few studies have examined the involvement of sucrose in mediating iron deficiency responses in rice. In this study, we found that the decrease in photosynthesis and total chlorophyll concentration (SPAD values) in leaves occurred at a very early stage under iron deficiency...
February 23, 2018: Plant Cell Reports
Xin Li, Heyu Yang, Caili Wang, Shaohui Yang, Jiehua Wang
Poplar CLE genes encoding TDIF motifs differentially regulate vascular cambial cell division and woody tissue organization in transgenic Arabidopsis. In Arabidopsis, CLE41 and CLE44 genes encode the tracheary element differentiation inhibitory factor (TDIF) peptide, which functions as a non-cell autonomous signal to regulate vascular development, and overexpression of AtCLE41/CLE44 generate similar phenotypic defects. In poplar, there are six CLE genes (PtTDIF1-4 and PtTDIF-like1-2) encoding two TDIF peptides (TDIF and TDIF-like peptide), which exhibit nearly same activities when exogenously applied to Arabidopsis seedlings...
February 23, 2018: Plant Cell Reports
Qian Zhao, Lujian Zhou, Jianchao Liu, Zhenzhen Cao, Xiaoxia Du, Fudeng Huang, Gang Pan, Fangmin Cheng
HT-induced ROS burst in developing anther is closely related to the lowered CAT activity as the result of the markedly suppressed OsCATB transcript, thereby causing severe fertility injury for rice plants exposed to HT at meiosis stage. The reproductive stage of rice plants is highly sensitive to heat stress. In this paper, different rice cultivars were used to investigate the relationship of HT-induced floret sterility with reactive oxygen species (ROS) detoxification in rice anthers under well-controlled climatic conditions...
February 21, 2018: Plant Cell Reports
Yunhui Zhang, Kai Liu, Xiaomei Zhu, Yan Wu, Suobing Zhang, Haiyuan Chen, Jing Ling, Yingjie Wang, Xianwen Fang
RTD1 encodes a homogentisate phytyltransferase catalyzing a key step in rice tocopherol biosynthesis, confers cold tolerance and regulates rice development by affecting the accumulation of DELLA protein SLENDER RICE1. Tocopherols are one of the most important lipid-soluble antioxidants having indispensable roles in living organisms. The physiological functions of tocopherols have been comprehensively characterized in animals and artificial membranes. However, genetic and molecular functions of tocopherols in plants are less understood...
February 9, 2018: Plant Cell Reports
Ting Zou, Mingxing Liu, Qiao Xiao, Tao Wang, Dan Chen, Tao Luo, Guoqiang Yuan, Qiao Li, Jun Zhu, Yueyang Liang, Qiming Deng, Shiquan Wang, Aiping Zheng, Lingxia Wang, Ping Li, Shuangcheng Li
OsPKS2, the rice orthologous gene of Arabidopsis PKSB/LAP5, encodes a polyketide synthase that is involved in pollen wall formation in rice. In flowering plants, the pollen wall protects male gametes from various environmental stresses and pathogen attacks, as well as promotes pollen germination. The biosynthesis of sporopollenin in tapetal cell is critical for pollen wall formation. Recently, progress has been made in understanding sporopollenin metabolism during pollen wall development in Arabidopsis. However, little is known about the molecular mechanism that underlies the sporopollenin synthesis in pollen wall formation in rice (Oryza sativa)...
February 6, 2018: Plant Cell Reports
Yunjian Xu, Fang Liu, Guomin Han, Beijiu Cheng
The present study identified several important candidate Pi regulation genes of maize and provides a better understanding on the generation of PHR genes in gramineous plants. Plants have evolved adaptive responses to cope with low phosphate (Pi) soils. The previous studies have indicated that phosphate starvation response (PHR) genes play central roles in regulating plant Pi starvation responses. However, the investigation of PHR family in gramineous plants is limited. In this study, we identified 64 PHR genes in four gramineous plants, including maize, rice, sorghum, and brachypodium, and conducted systematical analyses on phylogenetic, structure, collinearity, and expression pattern of these PHR genes...
February 2, 2018: Plant Cell Reports
Xiaoyuan Xie, Dorothy E Shippen
Prolonged hypomethylation of DNA leads to telomere truncation correlated with increased telomere recombination, transposon mobilization and stem cell death. Epigenetic pathways, including DNA methylation, are crucial for telomere maintenance. Deficient in DNA Methylation 1 (DDM1) encodes a nucleosome remodeling protein, required to maintain DNA methylation in Arabidopsis thaliana. Plants lacking DDM1 can be self-propagated, but in the sixth generation (G6) hypomethylation leads to rampant transposon activation and infertility...
February 1, 2018: Plant Cell Reports
Gopalakrishnamurty Kadambari, Lakshminarayana R Vemireddy, Akkareddy Srividhya, Ranjithkumar Nagireddy, Siddhartha Swarup Jena, Mahendranath Gandikota, Santosh Patil, Roja Veeraghattapu, D A K Deborah, G Eswar Reddy, Maliha Shake, Aleena Dasari, P V Ramanarao, Ch V Durgarani, C N Neeraja, E A Siddiq, Maganti Sheshumadhav
A major dwarfing region for plant height, asd1, was identified employing the next-generation sequencing-based QTL-Seq approach from a dwarf mutant and is demonstrated to be responsible for the dwarf nature with least penalty on yield in rice. The yield plateauing of modern rice is witnessed since many decades due to the narrow genetic base owing to the usage of a single recessive gene, i.e., semi-dwarf-1 (sd-1) for development of short-statured varieties throughout the world. This calls for the searching of alternate sources for short stature in rice...
January 31, 2018: Plant Cell Reports
Qingyuan Zhou, Qing Cai
Superoxide dismutase genes were expressed differentially along with developmental stages of fertilized ovules in Xanthoceras sorbifolium, and the XsMSD gene silencing resulted in the arrest of fertilized ovule development. A very small percentage of mature fruits (ca. 5%) are produced relative to the number of bisexual flowers in Xanthoceras sorbifolium because seeds and fruits are aborted at early stages of development after pollination. Reactive oxygen species (ROS) in plants are implicated in an extensive range of biological processes, such as programmed cell death and senescence...
January 31, 2018: Plant Cell Reports
Lanfei Zhao, Xin Ma, Peisen Su, Wenyang Ge, Hongyan Wu, Xiuxiu Guo, Anfei Li, Hongwei Wang, Lingrang Kong
TaUGT5: can reduce the proliferation and destruction of F. graminearum and enhance the ability of FHB resistance in wheat. Deoxynivalenol (DON) is one of the most important toxins produced by Fusarium species that enhances the spread of the pathogen in the host. As a defense, the UDP-glycosyltransferase (UGT) family has been deduced to transform DON into the less toxic form DON-3-O-glucoside (D3G), but the specific gene member in wheat that is responsible for Fusarium head blight (FHB) resistance has been little investigated and proved...
January 25, 2018: Plant Cell Reports
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