DEVELOPMENTALLY REGULATED SYSTEMIC ENDOPOLYPLOIDY IN SUCCULENTS WITH SMALL GENOMES

被引：150

作者：

DEROCHER, EJ

HARKINS, KR

GALBRAITH, DW

BOHNERT, HJ

机构：

[1] UNIV ARIZONA,DEPT PLANT SCI,TUCSON,AZ 85721

[2] UNIV ARIZONA,DEPT BIOCHEM,TUCSON,AZ 85721

来源：

SCIENCE | 1990年 / 250卷 / 4977期

关键词：

D O I：

10.1126/science.250.4977.99

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Nuclei from Mesembryanthemum crystallinum (ice plant) exhibit multiple levels of ploidy in every tissue as revealed by flow microfluorometric analysis of isolated nuclei stained with mithramycin. Multiples of the haploid nuclear genome complement (1C) corresponding to 2C, 4C, 8C, 16C, 32C, and 64C were observed. The distribution of nuclei among the different ploidy levels is tissue-specific and in leaves is characteristic of the stage of development. This type of genome organization has been identified in eight other succulent CAM (crassulacean acid metabolism) plant species with small genomes. Multiploidy may be a common property of this type of plant.

引用

页码：99 / 101

页数：3

共 14 条

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