Results 11 to 20 of about 111,032 (264)

Conversion of Chlorophyll b to Chlorophyll a via 7-Hydroxymethyl Chlorophyll [PDF]

open access: yesJournal of Biological Chemistry, 1996
Chlorophyll b is synthesized from chlorophyll a by the oxidation of the methyl group on the ring B of the tetrapyrrole ring to the formyl group. Previously, we reported that chlorophyllide b could be converted to chlorophyll a in isolated cucumber etioplasts indicating the conversion of chlorophyll b to chlorophyll a.
H, Ito, T, Ohtsuka, A, Tanaka
openaire   +2 more sources

Conversion of Chlorophyll b to Chlorophyll a and the Assembly of Chlorophyll with Apoproteins by Isolated Chloroplasts [PDF]

open access: yesPlant Physiology, 1997
Abstract The photosynthetic apparatus is reorganized during acclimation to various light environments. During adaptation of plants grown under a low-light to high-light environment, the light-harvesting chlorophyll a/b-protein complexes decompose concomitantly with an increase in the core complex of photosystem II.
T., Ohtsuka, H., Ito, A., Tanaka
openaire   +2 more sources

Chlorophyll b degradation by chlorophyll b reductase under high-light conditions [PDF]

open access: yesPhotosynthesis Research, 2015
The light-harvesting chlorophyll a/b binding protein complex of photosystem II (LHCII) is the main antenna complex of photosystem II (PSII). Plants change their LHCII content depending on the light environment. Under high-light conditions, the content of LHCII should decrease because over-excitation damages the photosystem.
Sato, Rei, Ito, Hisashi, Tanaka, Ayumi
openaire   +3 more sources

Chlorophyll b to Chlorophyll a Conversion Precedes Chlorophyll Degradation in Hordeum vulgare L. [PDF]

open access: yesJournal of Biological Chemistry, 1999
This study reveals by in vivo deuterium labeling that in higher plants chlorophyll (Chl) b is converted to Chl a before degradation. For this purpose, de-greening of excised green primary leaves of barley (Hordeum vulgare) was induced by permanent darkness in the presence of heavy water (80 atom % (2)H).
Folly P, Engel N
openaire   +3 more sources

The role of chlorophyll b in photosynthesis: Hypothesis [PDF]

open access: yesBMC Plant Biology, 2001
The physico-chemical properties of chlorophylls b and c have been known for decades. Yet the mechanisms by which these secondary chlorophylls support assembly and accumulation of light-harvesting complexes in vivo have not been resolved.Biosynthetic modifications that introduce electronegative groups on the periphery of the chlorophyll molecule ...
Park, Hyoungshin   +2 more
openaire   +5 more sources

Transcriptome Analysis Revealed a Positive Role of Ethephon on Chlorophyll Metabolism of Zoysia japonica under Cold Stress

open access: yesPlants, 2022
Zoysia japonica is a warm-season turfgrass with a good tolerance and minimal maintenance requirements. However, its use in Northern China is limited due to massive chlorophyll loss in early fall, which is the main factor affecting its distribution and ...
Jiahang Zhang   +6 more
doaj   +1 more source

Spatial Variation of Leaf Chlorophyll in Northern Hemisphere Grasslands

open access: yesFrontiers in Plant Science, 2020
Chlorophyll is the molecular basis for the function of photosystems and is also a promising tool for ecological prediction. However, the large-scale patterns of chlorophyll variation in grasslands remain poorly understood.
Yao Zhang   +16 more
doaj   +1 more source

Effect of The herbicide Pendimethalin on The Chlorophyll Content in Zea mays l. and Gossypium hirsutum l. Seedlings [PDF]

open access: yesJournal of Plant Production, 2016
Foliar application of pendimethalin herbicide (5 ppm) to three weeks old seedlings of Zea mays L. and GossypiumhirsutumL. resulted in a decreasing trend of chlorophylls a an b in both seedlings compared to controls.
Samia Ali, M. Wasfi
doaj   +1 more source

SEASONAL DYNAMICS OF THE CONTENT OF PHOTOSYNTHETIC PIGMENTS IN CONIFEROUS PLANTS UNDER THE CONDITIONS OF THE URBAN ENVIRONMENT

open access: yesИзвестия высших учебных заведений. Поволжский регион: Естественные науки, 2020
Background. The main share in the landscaping of the city of Yoshkar-Ola is made up of such deciduous woody and shrub plantings such as Betula pendula Roth., Tilia cordata Mill., Syringa vulgaris L., Acer negundo L., Populus pyramidalis Salisb., etc ...
E. A. Starikova, O. L. Voskresenskaya
doaj   +1 more source

Estimation of chlorophyll content in Brassica napus based on unmanned aerial vehicle images

open access: yesOil Crop Science, 2022
The chlorophyll content has a direct effect on photosynthesis of crops. In order to explore a quick and convenient method for estimating the chlorophyll content of Brassica napus and facilitate efficient crop monitoring, we measured the actual value of ...
Yayi Huang   +12 more
doaj   +1 more source

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