Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Tetzuya Katoh"'
Publikováno v:
Scientia Horticulturae. 72:157-169
The change in chlorophyll fluorescence was investigated using fluorescence microscopy at the initial stage of leaf spot occurrence in Saintpaulia ionantha H. Wendl. (African violet). When Saintpaulia leaf was exposed to a rapid temperature drop, fluo
Publikováno v:
Plant Science. 127:25-38
On contact with 5°C water for 3 s, photosynthesis of Saintpaulia leaf stopped with concomitant drop of delayed luminescence, followed by the decrease in chlorophyll (Chl) fluorescence to the F 0 level within 20 s. In the chloroplasts isolated from c
Publikováno v:
Journal of Plant Research. 109:339-342
Early changes in fine structures of intracellular organelles ofSaintpaulia leaves exhibiting chilling-induced degeneration of photosynthetic activities were investigated by electron microscopy. As early as 3 min after exposure to 10C water, thylakoid
Autor:
Iwao Yamazaki, Yoshinori Tanaka, Shinji Marumo, Takeshi Ohno, Satoshi Shinoda, Koichi Nozaki, Tetzuya Katoh, Yoshinobu Nishimura, Seiji Taniguchi, Atsuhiro Osuka, Tadashi Okada, Hiroko Yamada
Publikováno v:
Bulletin of the Chemical Society of Japan. 68:3255-3268
Fucoxanthin-pyropheophorbide dyads, 3c and 4c, and zeaxanthin-pyropheophorbide dyads, 3d and 4d, were prepared as the first example of natural carotenoid-linked pyropheophorbide. Singlet–singlet energy transfer from carotenoid to pyropheophorbide i
Autor:
Yoshinobu Nishimura, Yumiko Yamano, Shinichi Takaichi, Iwao Yamazaki, Tetzuya Katoh, Masayoshi Ito, Shin-ichi Nagaoka, Mamoru Mimuro, Umpei Nagashima
Publikováno v:
Chemical Physics Letters. 213:576-580
Relaxation processes of the singlet excited states of carotenoids containing a carbonyl group were investigated in relation to the molecular structure around the carbonyl group. The relative quantum yield of fluorescence from the allowed S2 state to
Autor:
Iwao Yamazaki, Tetzuya Katoh, Shin-ichi Nagaoka, Shinichi Takaichi, Umpei Nagashima, Yoshinobu Nishimura, Mamoru Mimuro
Publikováno v:
Chemical Physics Letters. 204:101-105
The forbidden singlet excited (2 1Ag) state of a linear carotenoid, neurosporene, in solution was directly detected by a single-proton absorption spectrum at 20°C. The absorption maximum in n-hexane was located at 623 ± 2 nm with its extinction coe
Autor:
Yoshinobu Nishimura, Umpei Nagashima, Mamoru Mimuro, Shin-ichi Nagaoka, Tetzuya Katoh, Shinichi Takaichi, Iwao Yamazaki
Publikováno v:
Chemical Physics Letters. 191:219-224
The solvent effect on the fluorescence quantum yields of S 1 (Φ 1 ) and S 2 (Φ 2 ) states of carotenoids containing a keto group is examined. The relative yields (Φ 2 /Φ 1 ) are expressed exponentially as a function of the reciprocal of the diele
Publikováno v:
Journal of Luminescence. 51:1-10
The fluorescence spectrum of a linear carotenoid, all-trans-β-apo-8′-carotenal (β-apo-8′-carotenal) at 20°C is reported for the first time. This pigment contains a keto carbonyl group and thus is regarded as a model compound of fucoxanthin, a
Autor:
Mamoru Mimuro, Shinichi Takaichi, Umpei Nagashima, Iwao Yamazaki, Tetzuya Katoh, Yoshinobu Nishimura
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Bioenergetics. 1098:271-274
Common fluorescence properties of carotenoids functioning as an efficient antenna in algal pigment systems are elucidated in relation to their molecular structure. Those carotenoids contain eight conjugated double bonds and one keto group associated
Publikováno v:
Photosynthesis Research. 27:221-226
The fluorescence spectrum of an allenic carotenoid, all-trans-fucoxanthin isolated from a brown alga, has been reported for the first time. This carotenoid is known to function efficiently as a primary photosynthetic antenna pigment in marine algae.