Investigation of potential antibacterial action for postharvest copper treatments of cut Acacia holosericea

Ratnayake, Kamani, Joyce, Daryl C. and Webb, Richard I. (2012) Investigation of potential antibacterial action for postharvest copper treatments of cut Acacia holosericea. Postharvest Biology and Technology, 70 59-69. doi:10.1016/j.postharvbio.2012.04.004


Author Ratnayake, Kamani
Joyce, Daryl C.
Webb, Richard I.
Title Investigation of potential antibacterial action for postharvest copper treatments of cut Acacia holosericea
Formatted title
Investigation of potential antibacterial action for postharvest copper treatments of cut Acacia holosericea
Journal name Postharvest Biology and Technology   Check publisher's open access policy
ISSN 0925-5214
1873-2356
Publication date 2012-08
Sub-type Article (original research)
DOI 10.1016/j.postharvbio.2012.04.004
Volume 70
Start page 59
End page 69
Total pages 11
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2013
Language eng
Formatted abstract
The mechanisms of action of Cu2+ in improving the longevity of cut flowers and foliage have not been elucidated. Possible antimicrobial action of Cu2+ against stem end and vase solution colonising bacteria was investigated using Cu2+ treatments optimised for cut Acacia holosericea A. Cunn. ex G. Don foliage stems. These treatments were a 5 h pulse with 2.2 mM Cu2+ or a 0.5 mM Cu2+ vase solution versus a deionised water (no Cu2+) control. Bacterial growth over time was assessed by a standard plate count agar technique and with scanning electron microscopy. Cu2+ treatments significantly extended the cut foliage vase life. However, they did not have sustained antibacterial activity against stem end or vase solution colonising bacteria. Also, regular recutting of 1–2 cm from the stem ends did not substantially improve either cut stem water relations or longevity. The positive effects of Cu2+ treatments were unaffected by the repeated stem end recutting. It was concluded that the primary mechanism of Cu2+ was not antibacterial. Moreover, naturally growing vase solution and stem end microbial populations had relatively insignificant effects on cut A. holosericea vase life. Research into alternative mechanisms of Cu2+ is required.
Keyword Acacia holosericea
Bacteria
Copper
Sem
Vase life
Water relations
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
Centre for Microscopy and Microanalysis Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 4 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Mon, 09 Jul 2012, 09:49:33 EST by System User on behalf of School of Agriculture and Food Sciences