Efficacy of nano-silver in alleviating bacteria-related blockage in cut rose cv. Movie Star stems

Li, Hongmei, Huang, Xinmin, Li, Jianbei, Liu, Jiping, Joyce, Daryl and He, Shenggen (2012) Efficacy of nano-silver in alleviating bacteria-related blockage in cut rose cv. Movie Star stems. Postharvest Biology and Technology, 74 36-41. doi:10.1016/j.postharvbio.2012.06.013


Author Li, Hongmei
Huang, Xinmin
Li, Jianbei
Liu, Jiping
Joyce, Daryl
He, Shenggen
Title Efficacy of nano-silver in alleviating bacteria-related blockage in cut rose cv. Movie Star stems
Journal name Postharvest Biology and Technology   Check publisher's open access policy
ISSN 0925-5214
1873-2356
Publication date 2012-12
Sub-type Article (original research)
DOI 10.1016/j.postharvbio.2012.06.013
Volume 74
Start page 36
End page 41
Total pages 6
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2013
Language eng
Formatted abstract
Postharvest treatments with nano-silver (NS) significantly improve water relations and therefore prolong the vase life of several cut flowers, including rose (Rosa hybrida cv. Movie Star). The efficacy of NS in alleviating bacterial related blockage in the stem-ends of cut cv. Movie Star was further investigated. Four dominant bacteria strains Pseudomonas fluorescens, Aeromonas sp., Comamonas acidovorans and Chryseomonas luteola were isolated from the stem-ends of cut roses. High numbers of the isolated bacteria at 10 8colony forming unitsmL -1 vase solution led to a sharp reduction in vase life, flower fresh weight, and water uptake. In vitro assessments of the antibacterial activity of NS against the four bacterial strains was >80% at 5mgL -1 and nearly 100% at 50mgL -1. Bacterial blockage in the stem-ends of cut cv. Movie Star roses with and without NS pulse treatments was assessed during the vase period using scanning electron microscopy. Following a 50mgL -1 NS pulse treatment, there were few bacterial cells on the cut surface of the stems even on day 7. Moreover, no obvious bacterial blockage was observed inside the xylem vessels. In contrast, the cut surface of control stems was covered with bacteria and associated amorphous substances, and numerous bacteria were found in the xylem vessels.
Keyword Antibacterial
Cut flower
Rosa hybrida
Vase life
Water uptake
Stem blockage
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Agriculture and Food Sciences
Official 2013 Collection
 
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Created: Thu, 15 Nov 2012, 11:17:59 EST by System User on behalf of School of Agriculture and Food Sciences