Lithuanian
Albanian
Arabic
Armenian
Azerbaijani
Belarusian
Bengali
Bosnian
Catalan
Czech
Danish
Deutsch
Dutch
English
Estonian
Finnish
Français
Greek
Haitian Creole
Hebrew
Hindi
Hungarian
Icelandic
Indonesian
Irish
Italian
Japanese
Korean
Latvian
Lithuanian
Macedonian
Mongolian
Norwegian
Persian
Polish
Portuguese
Romanian
Russian
Serbian
Slovak
Slovenian
Spanish
Swahili
Swedish
Turkish
Ukrainian
Vietnamese
Български
中文(简体)
中文(繁體)
antheraxanthin/vairenis
Nuoroda įrašoma į mainų sritį
Puslapis 1 nuo 24 rezultatus
Xanthophyll biosynthetic mutants of Arabidopsis thaliana: altered nonphotochemical quenching of chlorophyll fluorescence is due to changes in Photosystem II antenna size and stability.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
Xanthophylls (oxygen derivatives of carotenes) are essential components of the plant photosynthetic apparatus. Lutein, the most abundant xanthophyll, is attached primarily to the bulk antenna complex, light-harvesting complex (LHC) II. We have used mutations in Arabidopsis thaliana that selectively
Photosynthetic properties of an Arabidopsis thaliana mutant possessing a defective PsbS gene.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
We describe the properties of npq4-9, a new mutant of Arabidopsis thaliana (L.) Heynh. with reduced nonphotochemical quenching (NPQ) capacity that possesses a single amino acid substitution in the PsbS gene encoding PSII-S, a ubiquitous pigment-binding protein associated with photosystem II (PSII)
A mutational analysis of the ABA1 gene of Arabidopsis thaliana highlights the involvement of ABA in vegetative development.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
Much of the literature on the phytohormone abscisic acid (ABA) describes it as a mediator in triggering plant responses to environmental stimuli, as well as a growth inhibitor. ABA-deficient mutants, however, display a stunted phenotype even under well-watered conditions and high relative humidity,
Photosystem II Regulation and Dynamics of the Chloroplast D1 Protein in Arabidopsis Leaves during Photosynthesis and Photoinhibition.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
Arabidopsis thaliana leaves were examined in short-term (1 h) and long-term (10 h) irradiance experiments involving growth, saturating and excess light. Changes in photosynthetic and chlorophyll fluorescence parameters and in populations of functional photosystem II (PSII) centers were independently
New transgenic line of Arabidopsis thaliana with partly disabled zeaxanthin epoxidase activity displays changed carotenoid composition, xanthophyll cycle activity and non-photochemical quenching kinetics.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
Zeaxanthin epoxidase (ZE, E.C. 1.14.13.90), an enzyme belonging to the lipocalin superfamily, catalyses the conversion of zeaxanthin to antheraxanthin and violaxanthin. These reactions are part of the xanthophyll biosynthetic pathway and the xanthophyll cycle. The role of carotenoids in the
Overexpression of violaxanthin de-epoxidase: properties of C-terminal deletions on activity and pH-dependent lipid binding.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
Violaxanthin de-epoxidase (VDE) is localized in the thylakoid lumen and catalyzes the de-epoxidation of violaxanthin to form antheraxanthin and zeaxanthin. VDE is predicted to be a lipocalin protein with a central barrel structure flanked by a cysteine-rich N-terminal domain and a glutamate-rich
The role of lutein in the acclimation of higher plant chloroplast membranes to suboptimal conditions.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
Two mutants of Arabidopsis thaliana deficient in lutein have been investigated with respect to their responses to growth under a range of suboptimal conditions. The first mutant, lut1, was enriched in violaxanthin, antheraxanthin, zeaxanthin and zeinoxanthin compared with the wild-type (WT). In the
A nonphotochemical-quenching-deficient mutant of Arabidopsis thaliana possessing normal pigment composition and xanthophyll-cycle activity.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
Higher-plant chloroplasts alter the distribution of absorbed radiant energy between photosynthesis and heat formation in response to changing illumination level or environmental stress. Fluorescence imaging was used to screen 62 yellow-green T-DNA insertion mutant lines of Arabidopsis thaliana (L.)
Photosynthesis, chlorophyll fluorescence, light-harvesting system and photoinhibition resistance of a zeaxanthin-accumulating mutant of Arabidopsis thaliana.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
The abscisic-acid-deficient aba-1 mutant of Arabidopsis thaliana is unable to epoxidize zeaxanthin. As a consequence, it contains large amounts of this carotenoid and lacks epoxy-xanthophylls. HPLC analysis of pigment contents in leaves, isolated thylakoids and preparations of the major
An Arabidopsis thaliana mutant, altered in the γ-subunit of ATP synthase, has a different pattern of intensity-dependent changes in non-photochemical quenching and kinetics of the P-to-S fluorescence decay
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
A major photoprotective mechanism that plants employ against excess light involves interplay between the xanthophyll cycle and the accumulation of protons. Using mutants in the xanthophyll cycle, the roles of violaxanthin, antheraxanthin and zeaxanthin have already been well established. In this
Xanthophyll cycle-dependent nonphotochemical quenching in Photosystem II: Mechanistic insights gained from Arabidopsis thaliana L. mutants that lack violaxanthin deepoxidase activity and/or lutein.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
This study compares Photosystem II (PS II) chlorophyll (Chl) a fluorescence yield changes of Arabidopsis thaliana L. nuclear gene mutants, thoughtfully provided by the authors of Pogson et al. (1998 Proc Natl Acad Sci USA 95: 13324-13329). One single mutant (npq1) inhibits the violaxanthin
Violaxanthin de-epoxidase is rate-limiting for non-photochemical quenching under subsaturating light or during chilling in Arabidopsis.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
In response to conditions of excess light energy, plants induce non-photochemical quenching (NPQ) as a protective mechanism to prevent over reduction of photosystem II and the generation of reactive oxygen species (ROS). The xanthophyll cycle, which contributes significantly to reversible NPQ to
A model for describing the light response of the nonphotochemical quenching of chlorophyll fluorescence.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
The operation of photosynthetic energy-dissipating processes is commonly characterized by measuring the light response of the nonphotochemical quenching (NPQ) of chlorophyll fluorescence, or NPQ versus E curves. This study proposes a mathematical model for the quantitative description of the generic
Chloroplasts Require Glutathione Reductase to Balance Reactive Oxygen Species and Maintain Efficient Photosynthesis.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
Thiol-based redox-regulation is vital to coordinate chloroplast functions depending on illumination and is well investigated for thioredoxin-dependent processes. In parallel, glutathione reductase (GR) maintains a highly reduced glutathione pool, enabling glutathione-mediated redox buffering. Yet,
Effect of chlorophyll reduction in Arabidopsis thaliana by methyl jasmonate or norflurazon on antioxidant systems.
Straipsnius versti gali tik registruoti vartotojai
Prisijungti Registracija
Methyl jasmonate (MeJA) and norflurazon (NF) treatments resulted in a substantial decrease in photosynthetic activities and chlorophylls (Chls) in Arabidopsis thaliana plants, causing a senescence-like yellowing and a bleaching in MeJA- and NF-treated plants, respectively. Non-radiative energy
Išsamiausia vaistinių žolelių duomenų bazė, paremta mokslu
- Dirba 55 kalbomis
- Žolelių gydymas, paremtas mokslu
- Vaistažolių atpažinimas pagal vaizdą
- Interaktyvus GPS žemėlapis - pažymėkite vaistažoles vietoje (netrukus)
- Skaitykite mokslines publikacijas, susijusias su jūsų paieška
- Ieškokite vaistinių žolelių pagal jų poveikį
- Susitvarkykite savo interesus ir sekite naujienas, klinikinius tyrimus ir patentus
Įveskite simptomą ar ligą ir perskaitykite apie žoleles, kurios gali padėti, įveskite žolę ir pamatykite ligas bei simptomus, nuo kurių ji naudojama.
* Visa informacija pagrįsta paskelbtais moksliniais tyrimais
