PHYTOCHROME CONTROL OF TURION FORMATION IN SPIRODELA-POLYRHIZA L SCHLEIDEN

被引：14

作者：

APPENROTH, KJ ^{[1
]}

HERTEL, W ^{[1
]}

AUGSTEN, H ^{[1
]}

机构：

[1] UNIV JENA,DEPT BIOL PLANT PHYSIOL,VON HASE WEG 3,O-6900 JENA,GERMANY

来源：

ANNALS OF BOTANY | 1990年 / 66卷 / 02期

关键词：

Duckweed; Lemnaceae; Photomorphogenesis; Phytochrome; Spirodela polyrhiza L. Schleiden; Turion;

D O I：

10.1093/oxfordjournals.aob.a088011

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Turion yield in Spirodela polyrhiza, strain SJ, is increased by increasing the daily light period. This effect is more pronounced in autotrophic than in mixotrophic conditions. Night-break irradiation (15 mins) increased turion yield by 150 % under the conditions of an 8-h daily light period. Besides the effect of night-break irradiation, end-of-day far-red irradiation decreased turion yield with increasing photoperiod, whereas end-of-day red irradiation was without any effect. This demonstrates the promoting effect of the Pfr form of phytochrome on formation of light-grown turions.Formation of dark-grown turions was increased by about 240% by a single red light pulse and was reversed by an immediately applied far-red light pulse. Consequently, under heterotrophic conditions phytochrome modulates the turion formation process. © 1990 Annals of Botany Company.

引用

页码：163 / 168

页数：6

共 21 条

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