Abstract:
:To elucidate influences on the tocopherol biosynthesis in cyanobacteria, wild type and mutant cells of a putative methyltransferase in tocopherol and plastoquinone biosynthesis of Synechocystis sp. PCC 6803 were grown under different conditions. The vitamin E content of cells grown under different light regimes, photomixotrophic or photoautotrophic conditions and varying carbon dioxide supplies were compared by HPLC measurements. The tocopherol levels in wild type cells increased under higher light conditions and low carbon dioxide supply. Photomixotrophic growth led to lower vitamin E amounts in the cells compared to those grown photoautotrophically. We were able to segregate a homozygous deltasll0418 mutant under photoautotrophic conditions. In contrast to former suggestions in the literature the deletion of this gene is not lethal under photomixotrophic conditions and the influence on tocopherol and plastoquinone amounts is diminutive. The methyltransferase encoded by the gene sll0418 is not essential either for tocopherol or plastoquinone synthesis.
journal_name
J Plant Physioljournal_title
Journal of plant physiologyauthors
Backasch N,Schulz-Friedrich R,Appel Jdoi
10.1016/j.jplph.2005.04.006subject
Has Abstractpub_date
2005-07-01 00:00:00pages
758-66issue
7eissn
0176-1617issn
1618-1328pii
S0176-1617(05)00131-8journal_volume
162pub_type
杂志文章abstract::Agrobacterium has the ability to transfer its genetic material, T-DNA, into the plant genome. The unique interaction between the bacterium and its host plant has been well studied at the transcriptome, but not at the metabolic level. For a better understanding of this interaction it is necessary to investigate the met...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2008.11.015
更新日期:2009-07-01 00:00:00
abstract::Leaf growth is one of the first physiological processes affected by changes in plant water status under drought. A decrease in leaf expansion rate usually precedes any reduction in stomatal conductance or photosynthesis. Changes in leaf size and stomatal opening are potential adaptive mechanisms, which may help avoid ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2010.03.003
更新日期:2010-09-01 00:00:00
abstract::The relationship between coleoptile elongation and ethanolic fermentation was investigated in rice (Oryza sativa L.) coleoptiles of four cultivars subjected to a 48-h anoxic stress. The coleoptile elongation of all cultivars was suppressed by anoxic stress; however, the elongation of cvs Yukihikari and Nipponbare was ...
journal_title:Journal of plant physiology
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doi:10.1016/j.jplph.2005.09.017
更新日期:2007-02-01 00:00:00
abstract::Cell suspension cultures of Silybum marianum are able to excrete silymarin compounds into the medium upon elicitation with methyl jasmonate or cyclodextrins. Knowledge of transport mechanism is important to understand Sm metabolism and to develop strategies aimed at increasing production by means of cell cultures. For...
journal_title:Journal of plant physiology
pub_type: 杂志文章
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abstract::Seedlings of Cleopatra mandarin (Citrus reshni Hort. ex Tan.) and Alemow (Citrus macrophylla Wester) were inoculated with a mixture of AM fungi (Rhizophagus irregularis and Funneliformis mosseae) (+AM), or left non-inoculated (-AM). From forty-five days after fungal inoculation onwards, half of +AM or -AM plants were ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2013.06.006
更新日期:2014-01-01 00:00:00
abstract::The plant hormone cytokinin is a key morphogenic factor controlling cell division and differentiation, and thus the formation and growth rate of organs during a plant's life cycle. In order to explore the relevance of cytokinin during the initial phase of leaf primordia formation and its impact on subsequent leaf deve...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2011.03.003
更新日期:2011-08-15 00:00:00
abstract::Somatic embryogenesis was initiated in immature embryos of rye (Secale cereale L.) cultured on Murashige and Skoog's (1962) medium supplemented with various concentrations of 2,4-D and sucrose. The developmental stage of the embryo (optimal embryo length 0.5-2.0 mm) and concentration of 2,4-D (optimal concentration 2....
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/S0176-1617(84)80126-1
更新日期:1984-07-01 00:00:00
abstract::Changes in phenolics (PhC - phenolic compounds) measured as UV-absorbing compounds (UVAC) and their localization as well as growth, lipid peroxidation (TBARS level) and proline (Pro) level in three-day-old roots of seedlings (T(o) stage) obtained from hydroprimed (H) and hydroprimed with melatonin (H-MEL) seeds after ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2011.08.011
更新日期:2012-01-01 00:00:00
abstract::Drought stress is considered the most adverse factor restricting plant survival, growth, and productivity. The identification of the key adaptive mechanisms to drought stress is essential to enhance the drought resistance of plants. In this study, differential responses of three alfalfa varieties to drought, including...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2018.10.023
更新日期:2019-01-01 00:00:00
abstract::Leaf discs of bean, maize, and wheat were incubated in the presence of either 2-(14)C mevalonic acid or methyl-(14)C choline chloride and varying concentrations of abscisic acid. Abscisic acid inhibited, dependent on concentration, the incorporation of mevalonate into free sterols and stimulated the incorporation of c...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/S0176-1617(85)80197-8
更新日期:1985-03-01 00:00:00
abstract::After several years of close contacts and extensive discussion between various plant physiologists of different European countries, the Federation of European Societies of Plant Physiology (FESPP) was established in 1978 in Edinburgh. The aim of the FESPP was and remains to promote up-to-date plant physiology research...
journal_title:Journal of plant physiology
pub_type: 历史文章,杂志文章
doi:10.1078/0176-1617-01371
更新日期:2004-06-01 00:00:00
abstract::Alterations in temperature adaptation processes and changes in the content of stress-related compounds, polyamines and salicylic acid were evaluated in Atnoa1 (NO-associated 1) Arabidopsis mutant. The F(v)/F(m) chlorophyll-a fluorescence induction parameter and the actual quantum yield were significantly lower in the ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2011.01.021
更新日期:2011-07-15 00:00:00
abstract::The effects of oxygen supply within the range 20.8-50% (using pure oxygen and air), on cell cultures of Panax ginseng were investigated in a balloon-type bubble bioreactor (5L capacity, containing 4 L Murashige and Skoog medium, supplemented with 7.0 mgL(-1) indolebutyric acid, 0.5 mgL(-1) kinetin and 30 gL(-1) sucros...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2005.08.014
更新日期:2006-12-01 00:00:00
abstract::Cadmium is a highly toxic heavy metal pollutant arising mainly from increasing industrial disposal of electronic components. Due to its high solubility it easily enters soil and aquatic environments. Via its similarity to calcium it may interfere with different kinds of Ca dependent metabolic or developmental processe...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2012.06.002
更新日期:2012-10-15 00:00:00
abstract::Drought is one of the stresses that limit the yield of barley. Despite extensive studies focused on the issue, the molecular mechanism of the response to drought is still not fully understood. In our previous study, we proposed drought-induced signal perception controlled by actin filaments (AFs). To test this hypothe...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2016.02.006
更新日期:2016-04-01 00:00:00
abstract::Plant WRKY transcription factors play a vital role in abiotic stress tolerance and regulation of plant defense responses. This study examined AtWRKY11 and AtWRKY17 expression under ABA, salt, and osmotic stress at different developmental stages in Arabidopsis. We used reverse transcriptase PCR, quantitative real-time ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2018.04.007
更新日期:2018-07-01 00:00:00
abstract::In prior studies we learned that colonization of soil can be as important as colonization of roots in determining mycorrhizal influence on the water relations of host plants. Here we use a path analysis modeling approach to test (a) whether quantity of hyphae in soil contributes to variations in stomatal behavior and ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2006.08.005
更新日期:2007-10-01 00:00:00
abstract::Environmental temperature change may induce modifications in membrane lipid properties and composition, which account for different physiological responses among plant species. Coffee plants, as many tropical species, are particularly sensitive to cold, but genotypes can present differences that can be exploited to im...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2013.07.007
更新日期:2014-02-15 00:00:00
abstract::PAM fluorometry showed that the orchid Vanda sp (Gaud ex Pfitzers, Vandeae) had photosynthetic electron transport yields in leaves reaching ≈ 0.617 ± 0.262 at midday. Yield decayed exponentially as irradiance increased (Y½ = 128 ± 12.4 μmol photon m-2 s-1). Optimum irradiance (Eopt) for ETR (Photosynthetic Electron Tr...
journal_title:Journal of plant physiology
pub_type: 杂志文章
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abstract::The involvement of the ascorbate (AsA) system in the response of pumpkin (Cucurbita pepo L.) roots to aluminium stress was studied. The treatment of 5-day-old pumpkin seedlings with 50 microM aluminium sulphate resulted in approximately 60% inhibition of root growth within 48-60 h of treatment, while aluminium accumul...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2004.06.008
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journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2014.10.007
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journal_title:Journal of plant physiology
pub_type: 杂志文章
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abstract::Durian (Durio zibethinus) fruit was harvested at the commercially mature stage and stored at 25°C. Durian fruit have 3-5 longitudinal dehiscence zones (DZs) in the peel, which are up to 40cm long and 2cm thick in large fruit. Dehiscence started a week after harvest, was hastened by exogenous ethylene, and delayed by 1...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2015.04.005
更新日期:2015-06-15 00:00:00
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journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2013.04.019
更新日期:2013-10-15 00:00:00
abstract::The effects of three N(6)-substituted aminopurine derivatives containing either allenic or acetylenic side-chains on in vitro and in vivo cytokinin dehydrogenase (CKX; EC 1.5.99.12) activities were determined. At concentrations < or = 100 microM, the acetylenic derivative (HA-2) had no effect on in vitro CKX activity....
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2005.03.012
更新日期:2005-11-01 00:00:00
abstract::Raffinose family oligosaccharides (RFOs) are almost ubiquitous in seeds and have been hypothesized to constitute an important energy source during germination. To test this hypothesis we applied a specific alpha-galactosidase inhibitor (1-deoxygalactonojirimycin, DGJ) to germinating pea seeds, resulting in a complete ...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2006.10.010
更新日期:2007-08-01 00:00:00
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journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1078/0176-1617-01238
更新日期:2004-05-01 00:00:00
abstract::Ion-selective microelectrodes are a powerful tool in studying adaptive responses of plant cells and tissues to various abiotic stresses. However, application of this technique in Na(+) flux measurements was limited due to poor selectivity for Na(+) ions of commercially available Na(+) cocktails. Often, these cocktails...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2010.12.006
更新日期:2011-07-01 00:00:00
abstract::The present study was designed to determine the interactive effect of exogenous melatonin and nitric oxide (NO) on sodic alkaline stress mitigation in tomato seedlings. It was observed that exogenous melatonin treatment elevated NO levels in alkaline-stressed tomato roots. However, exogenous NO had little effects on m...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2015.07.012
更新日期:2015-08-15 00:00:00
abstract::A sand culture experiment was conducted to answer the question whether or not exogenous KNO(3) can alleviate adverse effects of salt stress in winter wheat by monitoring plant growth, K(+)/Na(+) accumulation and the activity of some antioxidant enzymes. Seeds of two wheat cultivars (CVs), DK961 (salt-tolerant) and JN1...
journal_title:Journal of plant physiology
pub_type: 杂志文章
doi:10.1016/j.jplph.2008.01.001
更新日期:2008-09-29 00:00:00