STRAIN OF ROSA-DAMASCENA CULTURED-CELLS RESISTANT TO ULTRAVIOLET-LIGHT

被引：35

作者：

MURPHY, TM ^{[1
]}

HAMILTON, CM ^{[1
]}

STREET, HE ^{[1
]}

机构：

[1] UNIV LEICESTER, DEPT BOT, LEICESTER LE1 7RH, ENGLAND

来源：

PLANT PHYSIOLOGY | 1979年 / 64卷 / 06期

关键词：

D O I：

10.1104/pp.64.6.936

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A strain of cultured cells of R. damascena Mill. cv. Gloire de Guillan which showed unusual resistance to damage by short wave (254 nm) UV radiation was isolated. The resistant cells were 2.2-2.8 times larger and had about twice the amount of DNA and more chromosomes than the parental, sensitive cells. The resistant cells also produced larger quantities of polyphenolic compounds, principally flavonoids, during the later phases of culture growth. At 10 days, resistant cells had 4 times more nonflavonoid polyphenolics and 14 times more flavonoids than parental cells. The resistance, which was also observed only in the later phases of culture growth, was best correlated with the production of polyphenolics, which apparently shielded UV sensitive target molecules from damage.

引用

页码：936 / 941

页数：6

共 24 条

[1] RELATIONSHIP OF DNA CONTENT TO NUCLEAR AND CHROMOSOME VOLUMES AND TO RADIOSENSITIVITY (LD50) [J].