玉米维管束鞘细胞中能量储存的光合作用光谱。
Photosynthetic action spectra of the energy storage in bundle sheath cells of Zea mays.
作者信息
Popovic R, Beauregard M, Leblanc R M
出版信息
Biochem Biophys Res Commun. 1987 Apr 14;144(1):198-202. doi: 10.1016/s0006-291x(87)80495-3.
Photosynthetic action spectra (Formula: see text), (Carpentier, R., Larue, B. and Leblanc, R. (1984) Arch. Biochem. Biophys. 228, 534-543.), from 400 to 750 nm were studied in bundle sheath cells of maize. Photosynthetic action spectra in the presence of 10 mM ascorbate or 4 mM ribose-5-phosphate were increased and shifted through all the spectra. After the addition of 10 microM DCMU photosynthetic action spectra were remarkably diminished. On the basis of these results we suggest that the role of PSII in BS chloroplasts will be to prevent the overoxidation of PSI. It appears that in addition to PSII some endogen electron donor may regulate the PSI activity in bundle sheath cells.
在玉米的维管束鞘细胞中研究了400至750纳米的光合作用光谱（公式：见正文），（卡尔彭捷，R.，拉鲁，B.和勒布朗，R.（1984年）《生物化学与生物物理学报》228卷，534 - 543页）。在存在10毫摩尔抗坏血酸或4毫摩尔5 - 磷酸核糖的情况下，光合作用光谱在整个光谱范围内都有所增加并发生了偏移。加入10微摩尔二氯苯基二甲基脲后，光合作用光谱显著减弱。基于这些结果，我们认为PSII在维管束鞘叶绿体中的作用将是防止PSI过度氧化。看来除了PSII之外，一些内源性电子供体可能会调节维管束鞘细胞中的PSI活性。
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