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Start Over Creator Yeo, U.-D.

1. Changes in contents of photosynthetic pigments and ribulose-1,5-bisphosphate carboxylase activity during the development of globular somatic embryo into the plantlet of Siberian ginseng

Creator:
Pandey, D. M., Kim, J.-W., Lee, W.-S., and Yeo, U.-D.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
carotenoids, chlorophyll, and Eleutherococcus senticosus
Language:
Multiple languages
Description:
During the development of the globular embryos via heart-shaped, torpedo-shaped, and cotyledonary embryos into plantlets, contents of chlorophyll (Chl) a and b and carotenoids, and activity of ribulose-1,5-bisphosphate carboxylase (RuBPC, EC 4.1.1.39) were investigated. In the solid cultivation (SC) the contents of Chl a, Chl b, Chl a/b, and total pigments increased up to plantlet stage. In the liquid cultivation (LC), contents of Chl a, Chl b, and total pigments increased till the torpedo-shaped stage, but decreased with the further development up to plantlets stage. During SC, RuBPC activity increased up to the torpedo-shaped embryo stage, but in the LC RuPBC activity increased continuously with the progress in the developmental stages. The correlations between Chl a and RuBPC activity on the SC and LC were negative, r = -0.26 and -0.56, respectively. and D. M. Pandey ... [et al.].
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Dynamic changes of photosynthetic pigments in soybean callus under high irradiance

Creator:
Pandey, D. M., Kim, K.-H., and Yeo, U.-D.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
carotenoids, chlorophyll, Glycine max, HPLC, photoinhibition, spectrophotometry, violaxanthin, and zeaxanthin
Language:
Multiple languages
Description:
Dynamic changes of neoxanthin (NEO), violaxanthin (VIO), anteraxanthin (ANT), zeaxanthin (ZEA), chlorophyll (Chl) a, Chl b, α-carotene, β-carotene, and their behaviour under increasing duration of high irradiance (HI) were investigated in the soybean hypocotyl callus culture. The calli were induced on solid (1.1 % agar) MS medium (pH 5.8) supplemented with 4.52 μM 2,4-D, 2.32 μM kinetin, and 3 % sucrose. After 30 d of culture, the green calli were irradiated with "white light" (133W m-2) for 0, 3.5, and 24 h. HPLC profiles were separated on a C18 column. With increasing duration of HI, the content of total carotenoids (Cars) increased, but the ratio of Chl a+b/Cars decreased. With lengthening the duration of HI, there was induction of ZEA. Contents of ANT, α-carotene, and β-carotene remained nearly constant, but ratio of ZEA/Chl a+b increased with lengthening the HI duration. and D. M. Pandey, K. H. Kim, U. D. Yeo.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public