共查询到20条相似文献,搜索用时 15 毫秒
1.
Rileen Sinha Andreas D Zimmer Kathrin Bolte Daniel Lang Ralf Reski Matthias Platzer Stefan A Rensing Rolf Backofen 《BMC plant biology》2010,10(1):76
Background
Alternative splicing (AS) involving tandem acceptors that are separated by three nucleotides (NAGNAG) is an evolutionarily widespread class of AS, which is well studied in Homo sapiens (human) and Mus musculus (mouse). It has also been shown to be common in the model seed plants Arabidopsis thaliana and Oryza sativa (rice). In one of the first studies involving sequence-based prediction of AS in plants, we performed a genome-wide identification and characterization of NAGNAG AS in the model plant Physcomitrella patens, a moss. 相似文献2.
In the present work, the response of tobacco (Nicotiana tabaccum L.) wild-type SR1 and transgenic CAT1AS plants (with a basal reduced CAT activity) was evaluated after exposure to the herbicide
paraquat (PQ). Superoxide anion (O2.−) formation was inhibited at 3 or 21 h of exposure, but H2O2 production and ion leakage increased significantly, both in SR1 or CAT1AS leaf discs. NADPH oxidase activity was constitutively
57% lower in non-treated transgenic leaves than in SR1 leaves and was greatly reduced both at 3 or 21 h of PQ treatment. Superoxide
dismutase (SOD) activity was significantly reduced by PQ after 21 h, showing a decrease from 70% to 55%, whereas catalase
(CAT) activity decreased an average of 50% after 3 h of treatment, and of 90% after 21 h, in SR1 and CAT1AS, respectively.
Concomitantly, total CAT protein content was shown to be reduced in non-treated CAT1AS plants compared to control SR1 leaf
discs at both exposure times. PQ decreased CAT expression in SR1 or CAT1AS plants at 3 and 21 h of treatment. The mechanisms
underlying PQ-induced cell death were possibly not related exclusively to ROS formation and oxidative stress in tobacco wild-type
or transgenic plants. 相似文献
3.
Hinks A Martin P Flynn E Eyre S Packham J;Childhood Arthritis Prospective Study-CAPS;BSPAR Study Group Barton A Worthington J Thomson W 《Arthritis research & therapy》2011,13(1):R12
Introduction
Juvenile idiopathic arthritis (JIA) is an umbrella term for all chronic childhood arthropathies and can be divided into seven subtypes. It includes the enthesitis related arthritis (ERA) subtype which displays symptoms similar to ankylosing spondylitis (AS) and juvenile-onset psoriatic arthritis which has similarities to psoriatic arthritis (PsA) and psoriasis (Ps). We, therefore, hypothesized that two well-established susceptibility loci for AS and Ps, ERAP1 and IL23R, could also confer susceptibility to these JIA subtypes. 相似文献4.
Matthew L Mundwiler Ling Mei Carol J Landers John D Reveille Stephan Targan Michael H Weisman 《Arthritis research & therapy》2009,11(6):R177-7
Introduction
Ankylosing spondylitis (AS) and inflammatory bowel disease (IBD) share similarities and are classified as spondyloarthropathies. In IBD, anti-Saccharomyces cerevisiae antibody (ASCA), anti-I2 (associated with anti-Pseudomonas activity), anti-Escherichia coli outer membrane porin C (anti-OmpC), anti-flagellin (anti-CBir1), and antineutrophil cytoplasmic antibodies (ANCA) possess clinical significance. Because of the overlap between the two conditions, a pilot study was designed to compare the frequency of these antibodies in AS patients compared to normal controls. 相似文献5.
6.
Shun-Fang Cheng Ying-Ping Huang Zi-Rong Wu Chung-Chi Hu Yau-Heiu Hsu Ching-Hsiu Tsai 《BMC plant biology》2010,10(1):286
Background
The genes of plants can be up- or down-regulated during viral infection to influence the replication of viruses. Identification of these differentially expressed genes could shed light on the defense systems employed by plants and the mechanisms involved in the adaption of viruses to plant cells. Differential gene expression in Nicotiana benthamiana plants in response to infection with Bamboo mosaic virus (BaMV) was revealed using cDNA-amplified fragment length polymorphism (AFLP). 相似文献7.
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9.
Xiaolong Huang Fan Ke Jing Lu Hongmin Xie Yu Zhao Chunyu Yin Baohua Guan Kuanyi Li Erik Jeppesen 《Diversity & distributions》2023,29(4):543-555
Aim
Decreasing in the diversity and distribution of native submerged plants have been widely observed in recent decades. Global underwater darkening, which is mainly caused by radiation dimming and a decrease in transparency due to, e.g. eutrophication, has emerged as a general trend that strongly hampers the growth of submerged plants in lakes by decreasing the light available for photosynthesis. However, few studies have attempted to compare the responses of native and invasive submerged plants to underwater darkening. In this study, we aimed to compare the effects of light attenuation on the growth and photosynthesis traits of native and invasive submerged plants.Location
East China.Method
Through field investigations and a mesocosm experiment, the responses of functional traits of two representative native [water thyme (Hydrilla verticillata), Eurasian watermilfoil (Myriophyllum spicatum)] and one invasive [Carolina fanwort (Cabomba caroliniana)] plant species to various environmental factors, notably to underwater light attenuation, were studied.Results
Underwater photosynthetically active radiation (PAR) exerted a substantial effect on the relative coverage and abundance of the three studied submerged plants in their natural freshwater habitats. Invasive C. caroliniana showed relatively superior growth (total biomass and relative growth rate) and photosynthesis traits (maximum quantum yield of photosystem II Fv/Fm, chlorophyll a content, chlorophyll b content and the ratio of Chl a and b contents) compared to the two native plants under low underwater PAR conditions. In contrast, under high underwater PAR conditions, C. caroliniana showed the opposite response.Main Conclusions
Light attenuation inhibits the growth of native submerged plants but facilitates the growth of invasive plant species. Restoration of freshwater lakes by reducing deterioration from underwater darkening (for instance, by reducing of external nutrients loading) may therefore constrain the growth and spread of the invasive C. caroliniana. 相似文献10.
11.
Background
The ubiquitous LysM motif recognizes peptidoglycan, chitooligosaccharides (chitin) and, presumably, other structurally-related oligosaccharides. LysM-containing proteins were first shown to be involved in bacterial cell wall degradation and, more recently, were implicated in perceiving chitin (one of the established pathogen-associated molecular patterns) and lipo-chitin (nodulation factors) in flowering plants. However, the majority of LysM genes in plants remain functionally uncharacterized and the evolutionary history of complex LysM genes remains elusive. 相似文献12.
Background
Alternative splicing (AS) is important for evolution and major biological functions in complex organisms. However, the extent of AS in mammals other than human and mouse is largely unknown, making it difficult to study AS evolution in mammals and its biomedical implications. 相似文献13.
Chen-Tran Hsu De-Chih Liao Fu-Hui Wu Nien-Tze Liu Shu-Chen Shen Shu-Jen Chou Shu-Yun Tung Chang-Hsien Yang Ming-Tsair Chan Choun-Sea Lin 《BMC plant biology》2011,11(1):60
Background
Orchids comprise one of the largest families of flowering plants and generate commercially important flowers. However, model plants, such as Arabidopsis thaliana do not contain all plant genes, and agronomic and horticulturally important genera and species must be individually studied. 相似文献14.
Youry Pii Massimo Crimi Giorgia Cremonese Angelo Spena Tiziana Pandolfini 《BMC plant biology》2007,7(1):21
Background
Rhizobia symbionts elicit root nodule formation in leguminous plants. Nodule development requires local accumulation of auxin. Both plants and rhizobia synthesise auxin. We have addressed the effects of bacterial auxin (IAA) on nodulation by using Sinorhizobium meliloti and Rhizobium leguminosarum bacteria genetically engineered for increased auxin synthesis. 相似文献15.
16.
Fe-Lin Lin Wu Yu-Fen Liang Yuan-Chen Chang Hao-Hsin Yo Ming-Feng Wei Li-Jiuan Shen 《Journal of biomedical science》2011,18(1):25
Background
Sensitivity of cancer cells to recombinant arginine deiminase (rADI) depends on expression of argininosuccinate synthetase (AS), a rate-limiting enzyme in synthesis of arginine from citrulline. To understand the efficiency of RNA interfering of AS in sensitizing the resistant cancer cells to rADI, the down regulation of AS transiently and permanently were performed in vitro, respectively. 相似文献17.
Background
Efficient transformation and regeneration methods are a priority for successful application of genetic engineering to vegetative propagated plants such as grape. The current methods for the production of transgenic grape plants are based on Agrobacterium-mediated transformation followed by regeneration from embryogenic callus. However, grape embryogenic calli are laborious to establish and the phenotype of the regenerated plants can be altered. 相似文献18.
Tony L Palama Patrice Menard Isabelle Fock Young H Choi Emmanuel Bourdon Joyce Govinden-Soulange Muriel Bahut Bertrand Payet Robert Verpoorte Hippolyte Kodja 《BMC plant biology》2010,10(1):82