Winter disruption of the circadian clock in chestnut

被引：119

作者：

Ramos, A ^{[1
]}

Pérez-Solis, E ^{[1
]}

Ibañez, C ^{[1
]}

Casado, R ^{[1
]}

Collada, C ^{[1
]}

Gómez, L ^{[1
]}

Aragoncillo, C ^{[1
]}

Allona, I ^{[1
]}

机构：

[1] Univ Politecn Madrid, Escuela Tecn Super Ingenieros Montes, Dept Biotecnol, E-28040 Madrid, Spain

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2005年 / 102卷 / 19期

关键词：

chilling; winter dormancy; ecodormancy; cold response;

D O I：

10.1073/pnas.0408549102

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：

Circadian clock performance during winter dormancy has been investigated in chestnut by using as marker genes CsTOC1 and CsLHY, which are homologous to essential components of the central circadian oscillator in Arabidopsis. During vegetative growth, mRNA levels of these two genes in chestnut seedlings and adult plants cycled daily, as expected. However, during winter dormancy, CsTOC1 and CsLHY mRNA levels were high and did not oscillate, indicating that the circadian clock was altered. A similar disruption was induced by chilling chestnut seedlings (to 4 C). Normal cycling resumed when endodormant or cold-treated plants were returned to 22 degrees C. The behavior of CsTOC1 and CsLHY during a cold response reveals a relevant aspect of clock regulation not yet encountered in Arabidopsis.

引用

页码：7037 / 7042

页数：6

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