Effects of Abscisic Acid on Flowering and Some Key Enzymes of Bougainvillea glabra

ACTA HORTICULTURAE SINICA ›› 2014, Vol. 41 ›› Issue (10): 2085-2093.

• Ornamental Plants • Previous Articles Next Articles

Effects of Abscisic Acid on Flowering and Some Key Enzymes of Bougainvillea glabra

ZHAO Jia-yu1，PAN Yuan-zhi1，and LI Yong-hong2,*

1College of Landscape Architecture，Sichuan Agricultural University，Chengdu 611130，China；2School of Applied Chemistry and Biotechnology，Shenzhen Polytechnic，Shenzhen，Guangdong 518055，China

Received:2014-05-08 Online:2014-10-25 Published:2014-10-25

Abstract

Abstract: Bougainvillea glabra was chosen as subjects and treated by different concentration of nordihydroguaiaretic acid（NDGA）and abscisic acid（ABA）. Their flowering time was observed and the concentration of zeaxanthin epoxidase（ZEP），9-cis-epoxycarotenoid dioxygenase（NCED），ABA aldehyde oxidase（AAO）and ABA in the leaf were detected. Experiment result showed that ABA had a significant promotion of the plant’s florescence，while NDGA（> 10 μmol ? L-1）reduced the concentration of ABA. External ABA stimulated the enzymatic activity and concentration of ZEP，NCED and ZEP. It demonstrates that ABA can mediate its synthesis by autocatalystic reaction and single enzyme or single enzymatic reaction couldn’t reasonably explain the change of ABA level. It is concluded that ABA signal mechanism is a result of coordination and system control by a multienzyme system.

Key words: Bougainvillea glabra, ABA, ZEP, NCED, AAO

CLC Number:

S 685

ZHAO Jia-Yu, PAN Yuan-Zhi, LI Yong-Hong. Effects of Abscisic Acid on Flowering and Some Key Enzymes of Bougainvillea glabra[J]. ACTA HORTICULTURAE SINICA, 2014, 41(10): 2085-2093.

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Effects of Abscisic Acid on Flowering and Some Key Enzymes of Bougainvillea glabra

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