Commonwealth Scientific and Industrial Research Organization Division of Horticultural Research, Adelaide, South Australia 5001, Australia.
Plant Physiol. 1983 Apr;71(4):785-8. doi: 10.1104/pp.71.4.785.
During the growth of beet leaves from 2 to 3 to 25 to 30 centimeters, the leaf cells increase in size, the average number of chloroplasts per cell increases from 11 to 65 and the amount of chloroplast DNA per cell increases from 1100 to 1900 plastome copies. The average number of copies of the plastome per chloroplast decreases from 104 in 2 to 3-centimeter leaves to 29 in 25 to 30-centimeter leaves during a period when the chloroplasts undergo two to three rounds of division and increase diameter from 1.5 to 4.9 micrometers. This result is at variance with previously published studies of beet chloroplasts but agrees with the conclusions reached in more recent studies of pea and spinach and wheat leaf cell expansion.
在甜菜叶片从 2 到 3 厘米长长到 25 到 30 厘米长的过程中，叶片细胞的大小会增加，每个细胞中的叶绿体数量从 11 个增加到 65 个，每个细胞中的叶绿体 DNA 数量从 1100 个增加到 1900 个质体拷贝。在叶绿体经历两轮到三轮分裂并将直径从 1.5 微米增加到 4.9 微米的过程中，每个叶绿体的质体拷贝数从 2 到 3 厘米长的叶片中的 104 个减少到 25 到 30 厘米长的叶片中的 29 个。这一结果与先前发表的关于甜菜叶绿体的研究结果不一致，但与最近对豌豆、菠菜和小麦叶片细胞扩张的研究得出的结论一致。
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