24-表油菜素内酯对番茄热胁迫期间花粉活力的影响。

Effect of 24-epibrassinolide on pollen viability during heat-stress in tomato.

作者信息

Singh Ishwar, Shono Mariko

机构信息

Japan International Research Center for Agricultural Sciences, Okinawa Subtropical Station, Maezato 1091-1, Ishigaki, Okinawa 907-0002, Japan.

出版信息

Indian J Exp Biol. 2003 Feb;41(2):174-6.

PMID:15255612

Abstract

Tomato pollen when treated with 24-epibrassinolide (EBR), it was observed that in vitro pollen germination was more tolerant to high temperature. A significantly higher in vitro pollen germination, enhanced tube growth and low pollen bursting were observed in presence of EBR at 35 degrees C. Since a preconditioning treatment of tomato plant was not required for these effects, it is concluded that EBR treatment increased basic thermotolerance of germinating pollen. This study provided the first evidence for EBR induced thermotolerance in germinating pollen.

摘要

用24-表油菜素内酯（EBR）处理番茄花粉时，观察到体外花粉萌发对高温更具耐受性。在35摄氏度下，存在EBR时，观察到体外花粉萌发显著更高、花粉管生长增强且花粉破裂率低。由于这些效应不需要对番茄植株进行预处理，因此得出结论，EBR处理提高了萌发花粉的基本耐热性。本研究为EBR诱导萌发花粉的耐热性提供了首个证据。