Results 61 to 70 of about 138,541 (200)

Mechanisms for leaf color changes in Osmanthus fragrans ‘Ziyan Gongzhu’ using physiology, transcriptomics and metabolomics

open access: yesBMC Plant Biology, 2023
Background Color-leaved O. fragrans is a variety of Osmanthus fragrans, which has both the fragrance of Osmanthus and the color of color-leaved plants. However, the molecular mechanism of color change of color-leaved O. fragrans is not clear.
Peng Guo   +5 more
doaj   +1 more source

Sensitivity of freshwater periphytic diatoms to agricultural herbicides [PDF]

open access: yes, 2009
The biomonitoring of pesticide pollution in streams and rivers using algae such as diatoms remains difficult. The responses of diatomcommunities to toxic stress in streamwater are disturbed by the variations of environmental parameters.
Coste, Michel   +6 more
core   +4 more sources

Rapid toxicity assessment of six antifouling booster biocides using a microplate-based chlorophyll fluorescence in Undaria pinnatifida gametophytes [PDF]

open access: yes, 2020
Biocides of antifouling agents can cause problems in marine ecosystems by damaging to non-target algal species. Aquatic bioassays are important means of assessing the quality of water containing mixtures of contaminants and of providing a safety standard
Choi, Soyeon   +4 more
core   +2 more sources

Effect of kinetin on nucleic acid synthesis in senescing and young leaves in Brassica oleracea L. var. gongylodes L.

open access: yesActa Societatis Botanicorum Poloniae, 2015
In detached kohlrabi leaves senescing in the dark, the decrease in chlorophyll to was more pronounced than in chlorophyll a. The retardation by kinetin of the chlorophyll loss was also markedly stronger in the case of chlorophyll b.
J. Legocka, A. Szweykowska
doaj   +1 more source

Regulation of Leaf Senescence by Cytokinin, Sugars, and Light. Effects on NADH-Dependent Hydroxypyruvate Reductase [PDF]

open access: yes, 1998
The aim of this study was to investigate the interactions between cytokinin, sugar repression, and light in the senescence-related decline in photosynthetic enzymes of leaves. In transgenic tobacco (Nicotiana tabacum) plants that induce the production of
Lea, P.J.   +4 more
core   +1 more source

Auxin response factor 6A regulates photosynthesis, sugar accumulation, and fruit development in tomato. [PDF]

open access: yes, 2019
Auxin response factors (ARFs) are involved in auxin-mediated transcriptional regulation in plants. In this study, we performed functional characterization of SlARF6A in tomato.
Deng, Wei   +17 more
core   +1 more source

Characteristics of C-4 photosynthesis in stems and petioles of C-3 flowering plants [PDF]

open access: yes, 2002
Most plants are known as C-3 plants because the first product of photosynthetic CO2 fixation is a three-carbon compound. C-4 plants, which use an alternative pathway in which the first product is a four-carbon compound, have evolved independently many ...
A Ben Zioni   +29 more
core   +1 more source

Protoheme Turnover and Chlorophyll Synthesis in Greening Barley Tissue [PDF]

open access: yesPlant Physiology, 1975
Studies in which (14)C-labeled precursors were fed to etiolated barley leaves (Hordeum vulgare L. var. Proctor) yielded chlorophyll and protoheme having similar specific radioactivities. These findings indicate: (a) there appears to be a rapid turnover of protoheme in the absence of net synthesis; (b) both pigments probably originate from a single 5 ...
P A, Castelfranco, O T, Jones
openaire   +2 more sources

Characteristics of the tomato chromoplast revealed by proteomic analysis [PDF]

open access: yes, 2010
Chromoplasts are non-photosynthetic specialized plastids that are important in ripening tomato fruit (Solanum lycopersicum) since, among other functions, they are the site of accumulation of coloured compounds.
Barsan, Cristina   +9 more
core   +3 more sources

Properties of synthesis of chlorophyll a from chlorophyll b in cucumber etioplasts.

open access: yesJournal of Biological Chemistry, 1994
Chlorophyll a accumulated when chlorophyllide b was incubated with isolated cucumber etioplasts in the dark. When [14C]chlorophyllide b was used as the substrate for chlorophyll synthesis, [14C]chlorophyll a was formed, showing that chlorophyll a was synthesized from the exogenously added chlorophyllide b, not by light-independent reduction of ...
H, Ito, S, Takaichi, H, Tsuji, A, Tanaka
openaire   +2 more sources

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