共查询到20条相似文献,搜索用时 15 毫秒
1.
Jue-Liang Hsu Lan-Yu Wang Shu-Ying Wang Ching-Huang Lin Kuo-Chieh Ho Fong-Ku Shi Ing-Feng Chang 《Proteome science》2009,7(1):42
Background
Under conditions of salt stress, plants respond by initiating phosphorylation cascades. Many key phosphorylation events occur at the membrane. However, to date only limited sites have been identified that are phosphorylated in response to salt stress in plants. 相似文献2.
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3.
Background
Endopolyploidy is developmentally regulated. Presence of endopolyploidy as a result of endoreduplication has been characterized in insects, mammals and plants. The family Orchidaceae is the largest among the flowering plants. Many of the members of the orchid family are commercially micropropagated. Very little has been done to characterize the ploidy variation in different tissues of the orchid plants during development. 相似文献4.
Lorella Navazio Barbara Baldan Roberto Moscatiello Anna Zuppini Sheridan L Woo Paola Mariani Matteo Lorito 《BMC plant biology》2007,7(1):41
Background
Calcium is commonly involved as intracellular messenger in the transduction by plants of a wide range of biotic stimuli, including signals from pathogenic and symbiotic fungi. Trichoderma spp. are largely used in the biological control of plant diseases caused by fungal phytopathogens and are able to colonize plant roots. Early molecular events underlying their association with plants are relatively unknown. 相似文献5.
Non‐destructive allometric estimates of above‐ground and below‐ground biomass of high‐mountain vegetation in the Andes
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Aim
Studies that monitor high‐mountain vegetation, such as paramo grasslands in the Andes, lack non‐destructive biomass estimation methods. We aimed to develop and apply allometric models for above‐ground, below‐ground and total biomass of paramo plants.Location
The paramo of southern Colombia between 1°09′N and 077°50′W, at 3,400 and 3,700 m a.s.l.Methods
We established 61 1‐m2 plots at random locations, excluding disturbed, inaccessible and peat bog areas. We measured heights and basal diameters of all vascular plants in these plots and classified them into seven growth forms. Near each plot, we sampled the biomass from plants of abundant genera, after having measured their height and basal diameter. Hence, we measured the biomass of 476 plants (allometric set). For each growth form we applied power‐law functions to develop allometric models of biomass against basal diameter, height, height x basal diameter and height × basal area. The best models were selected using AICc weights. Using the observed and predicted plant biomass of the allometric set we calculated absolute percentage errors using cross‐validation. The biomass of a plot was estimated by summing the predicted biomass of all plants in a plot. Confidence limits around these sums were calculated by bootstrapping.Results
For groups of <20 plants the biomass predictions yielded large (>15%) errors. Applying groups that resembled the 1‐m2 plots in density and composition, the errors for above‐ground and total biomass estimates were <15%. Across all plots, we obtained an above‐ground, below‐ground and total plot biomass of 329 ± 190, 743 ± 486 and 1011 ± 627 g/m2 (mean ± SD), respectively. These values were within the range of biomass estimates obtained destructively in the tropical Andes.Conclusions
In new applications, if target vegetation samples are similar regarding growth forms and genera to our allometric set, their biomass might be predicted applying our equations, provided they contain at least 50–100 plants. In other situations, we would recommend gathering additional biomass measurements from local plants to evaluate new regression equations. 相似文献6.
Andreas Sjödin Kirsten Wissel Max Bylesjö Johan Trygg Stefan Jansson 《BMC plant biology》2008,8(1):61
Background
Genomic studies are routinely performed on young plants in controlled environments which is very different from natural conditions. In reality plants in temperate countries are exposed to large fluctuations in environmental conditions, in the case of perennials over several years. We have studied gene expression in leaves of a free-growing aspen (Populus tremula) throughout multiple growing seasons 相似文献7.
Horizontal acquisition of multiple mitochondrial genes from a parasitic plant followed by gene conversion with host mitochondrial genes 总被引:1,自引:0,他引:1
Jeffrey P Mower Saša Stefanović Weilong Hao Julie S Gummow Kanika Jain Dana Ahmed Jeffrey D Palmer 《BMC biology》2010,8(1):150
Background
Horizontal gene transfer (HGT) is relatively common in plant mitochondrial genomes but the mechanisms, extent and consequences of transfer remain largely unknown. Previous results indicate that parasitic plants are often involved as either transfer donors or recipients, suggesting that direct contact between parasite and host facilitates genetic transfer among plants. 相似文献8.
Jeffrey P Mower Pascal Touzet Julie S Gummow Lynda F Delph Jeffrey D Palmer 《BMC evolutionary biology》2007,7(1):135
Background
It has long been known that rates of synonymous substitutions are unusually low in mitochondrial genes of flowering and other land plants. Although two dramatic exceptions to this pattern have recently been reported, it is unclear how often major increases in substitution rates occur during plant mitochondrial evolution and what the overall magnitude of substitution rate variation is across plants. 相似文献9.
10.
Mingming Xin Yu Wang Yingyin Yao Chaojie Xie Huiru Peng Zhongfu Ni Qixin Sun 《BMC plant biology》2010,10(1):123
Background
MicroRNAs (miRNAs) are a class of small non-coding regulatory RNAs that regulate gene expression by guiding target mRNA cleavage or translational inhibition. MiRNAs can have large-scale regulatory effects on development and stress response in plants. 相似文献11.
Background
After transformation, plants that are homozygous and contain one copy of the transgene are typically selected for further study. If real-time PCR is to be used to determine copy number and zygosity, it must be able to distinguish hemizygous from homozygous and one-copy from two-copy plants. That is, it must be able to detect two-fold differences. 相似文献12.
Barbara Pauly Margherita Lasi Carol MacKintosh Nick Morrice Axel Imhof Jörg Regula Stephen Rudd Charles N David Angelika Böttger 《BMC cell biology》2007,8(1):31
Background
14-3-3 proteins have been implicated in many signalling mechanisms due to their interaction with Ser/Thr phosphorylated target proteins. They are evolutionarily well conserved in eukaryotic organisms from single celled protozoans and unicellular algae to plants and humans. A diverse array of target proteins has been found in higher plants and in human cell lines including proteins involved in cellular metabolism, apoptosis, cytoskeletal organisation, secretion and Ca2+ signalling. 相似文献13.
Stefano Gattolin Mathias Sorieul Paul R Hunter Roman H Khonsari Lorenzo Frigerio 《BMC plant biology》2009,9(1):133-9
Background
Tonoplast intrinsic proteins (TIPs) are widely used as markers for vacuolar compartments in higher plants. Ten TIP isoforms are encoded by the Arabidopsis genome. For several isoforms, the tissue and cell specific pattern of expression are not known. 相似文献14.
Background
In a previous study, anthocyanin levels in potato plants were increased by manipulating genes connected with the flavonoid biosynthesis pathway. However, starch content and tuber yield were dramatically reduced in the transgenic plants, which over-expressed dihydroflavonol reductase (DFR). 相似文献15.
16.
Stephanie Troufflard William Mullen Tony R Larson Ian A Graham Alan Crozier Anna Amtmann Patrick Armengaud 《BMC plant biology》2010,10(1):172
Background
Mineral fertilization and pest control are essential and costly requirements for modern crop production. The two measures go hand in hand because plant mineral status affects plant susceptibility to pests and vice versa. Nutrient deficiency triggers specific responses in plants that optimize nutrient acquisition and reprogram metabolism. K-deficient plants illustrate these strategies by inducing high-affinity K-uptake and adjusting primary metabolism. Whether and how K deficient plants also alter their secondary metabolism for nutrient management and defense is not known. 相似文献17.
Ariel A Bazzini Ramón Asís Virginia González Sebastián Bassi Mariana Conte Marcelo Soria Alisdair R Fernie Sebastián Asurmendi Fernando Carrari 《BMC plant biology》2010,10(1):240
Background
The economic importance of Solanaceae plant species is well documented and tomato has become a model for functional genomics studies. In plants, important processes are regulated by microRNAs (miRNA). 相似文献18.
Background
Prior to this study, no differences in gene expression between male and female dioecious plants in the vegetative state had been detected. Among dioecious plants displaying sexual dimorphism, Silene latifolia is one of the most studied species. Although many sexually dimorphic traits have been described in S. latifolia, all of them are quantitative, and they usually become apparent only after the initiation of flowering. 相似文献19.
Roberto Moscatiello Sara Alberghini Andrea Squartini Paola Mariani Lorella Navazio 《BMC microbiology》2009,9(1):206