Molecular genetic basis of weed seed dormancy and germination

脱落酸(ABA)和赤霉素(GAs)参与休眠和萌发控制。为探讨月季种子休眠的分子机制，建立了ABA、GA及ABA代谢产物的同时分析方法。我们用这种方法揭示了ABA分解代谢在阴道毛豆种子休眠中起主导作用的途径。分离了参与ABA生物合成或分解代谢的NCED基因和ABA-GT基因。

Abscisic acid (ABA) and gibberellins (GAs) are well known to be involved in dormancy and germination control. To determine the molecular mechanism of seed dormancy in Monochoria vaginalis, a simultaneous analysis of ABA, GA and metabolites of ABA was established. We revealed a pathway of ABA catabolism playing a predominant role in seed dormancy of M.vaginalis using this method. NCED genes and ABA-GT genes which confer ABA biosynthesis or catabolism were isolated.