DEVELOPMENTAL PATTERNS OF LAMELLAE AND STROMA FRACTIONS OF CHLOROPLASTS IN RICE PLANTS

スポンサーリンク

概要

• 論文の詳細を見る

• On examining the changes in lamellae and stroma nitrogen during leaf development, it is demonstrated that the lamellae and stroma fractions of rice chloroplasts develop in quite different ways. In the case of stroma, the stroma materials existing in the leaf section which has just emerged from a leaf sheath are quite limited and the major part of this fraction is derived from the successive protein synthesis, i.e., the synthesis of this fraction was markedly increased during leaf expansion. This developmental pattern of stroma coincided with the changes in the high-molecular-weight water soluble leaf protein, which seemed to be mainly composed of Fraction I protein. A rapid increase in stroma nitrogen was found to be a major cause for an increase in the leaf nitrogen content during leaf development. On the other hand, the developmental pattern of the lamellae fraction was characterized by the fact that a considerable amount of this fraction had already been prepared when a leaf emerged from a leaf sheath and thereafter, no outstanding increase was seen compared to that of the stroma. This developmental pattern of the lamellae fraction resulted in a lowering of the proportion of lamellae nitrogen to the total leaf nitrogen during leaf development. A great change in the lamellae-stroma composition of chloroplasts was observed. The proportion of stroma nitrogen to the total chloroplast nitrogen tended to increase as a leaf develops. Since the developmental stage varied according to the regions of a leaf, variation of the lamellae-stroma composition was seen even within a leaf, i.e., the proportion of stroma nitrogen increased from base to tip. In order to compare the synthetic rate of chlorophyll with those of the stroma and lamellae fractions, the changes in the ratios of stroma nitrogen/chlorophyll and lamellae nitrogen/chlorophyll were examined. The lamellae nitrogen/chlorophyll ratio decreased as a leaf developed, whereas the stroma nitrogen/chlorophyll ratio increased. Then the synthetic rates of these fractions during leaf development turned out to be of the same order as the stroma fraction, chlorophyll, lamellae fraction.

• 一般社団法人日本土壌肥料学会の論文

著者

• Morita Koji

  Hokuriku National Agricultural Experiment Station

• KONO Michiyoshi

  Hokuriku National Agricultural Experiment Station

関連論文

• ISOLATION OF CHLOROPLASTS FROM RICE LEAVES USING GLUTARALDEHYDE
• FURTHER EVIDENCE FOR THE INTEGRITY OF RICE CHLOROPLASTS ISOLATED IN GLUTARALDEHYDE MEDIUM
• RELATIONSHIP BETWEEN THE CHANGE IN THE CHLOROPLASTIC NITROGEN FRACTIONS AND THE RATE OF OXYGEN EVOLUTION IN RICE PLANTS
• CHANGES IN THE NITROGEN LOCALIZED IN THE LAMELLAE SYSTEMS AND STROMA OF RICE CHLOROPLAST ACCOMPANYING THE STAGES OF GROWTH
• DEVELOPMENTAL PATTERNS OF LAMELLAE AND STROMA FRACTIONS OF CHLOROPLASTS IN RICE PLANTS

スポンサーリンク