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Cold storage to overcome dormancy affects the carbohydrate status and photosynthetic capacity of Rhododendron simsii

Annelies Christiaens, Ellen De Keyser, Peter Lootens, Isabel Roldàn-Ruiz UGent, Jan De Riek, Bruno Gobin and Marie-Christine Van Labeke UGent (2015) PLANT BIOLOGY. 17(1). p.97-105
abstract
Global warming leads to increasing irregular and unexpected warm spells during autumn, and therefore natural chilling requirements to break dormancy are at risk. Controlled cold treatment can provide an answer to this problem. Nevertheless, artificial cold treatment will have its consequences on carbon reserves and photosynthesis. In this paper the effect of dark cold storage at 7°C to break flower bud dormancy in the evergreen Rhododendron simsii has been quantified. Carbohydrate and starch content in leaves and flower buds of an early (‘Nordlicht’), semi-early (‘M. Marie’) and late (‘Mw. G. Kint’) flowering cultivar showed that carbon loss due to respiration was lowest for ‘M. Marie’, while ‘Mw. G. Kint’ was completely depleted in starch reserves at the end of cold treatment. The gene isolation resulted in a candidate gene for SUS (RsSus) which appears to be homologous to AtSus3 and had a clear increase in expression in leaves during cold treatment. Photosynthetic measurements on ‘Nordlicht’ and the late flowering cultivar ‘Thesla’ showed that during cold treatment dark respiration decreased by 58% and 63%, respectively. Immediately after cold treatment dark respiration increased and stabilized after 3 days. The light compensation point followed the same trend as dark respiration. The quantum efficiency showed no significant changes during the first days after cold treatment, but was significantly higher than in plants with dormant flower buds, at the start of cold treatment. In conclusion, photosynthesis stabilized 3 days after cold treatment and was improved compared to the level before cold treatment.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
SEEDLINGS, LEAVES, STRESS, AZALEA, FAMILY, CULTIVARS, CHLOROPHYLL, FLUORESCENCE, DARK, ARABIDOPSIS, sucrose synthase, photosynthesis, flowering, dormancy, Carbohydrate metabolism, cold
journal title
PLANT BIOLOGY
Plant Biol.
volume
17
issue
1
pages
97 - 105
Web of Science type
Article
Web of Science id
000347707900012
JCR category
PLANT SCIENCES
JCR impact factor
2.216 (2015)
JCR rank
60/209 (2015)
JCR quartile
2 (2015)
ISSN
1435-8603
DOI
10.1111/plb.12195
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
4428769
handle
http://hdl.handle.net/1854/LU-4428769
date created
2014-06-25 10:17:30
date last changed
2016-12-19 15:40:07
@article{4428769,
  abstract     = {Global warming leads to increasing irregular and unexpected warm spells during autumn, and therefore natural chilling requirements to break dormancy are at risk. Controlled cold treatment can provide an answer to this problem. Nevertheless, artificial cold treatment will have its consequences on carbon reserves and photosynthesis. In this paper the effect of dark cold storage at 7{\textdegree}C to break flower bud dormancy in the evergreen Rhododendron simsii has been quantified. Carbohydrate and starch content in leaves and flower buds of an early ({\textquoteleft}Nordlicht{\textquoteright}), semi-early ({\textquoteleft}M. Marie{\textquoteright}) and late ({\textquoteleft}Mw. G. Kint{\textquoteright}) flowering cultivar showed that carbon loss due to respiration was lowest for {\textquoteleft}M. Marie{\textquoteright}, while {\textquoteleft}Mw. G. Kint{\textquoteright} was completely depleted in starch reserves at the end of cold treatment. The gene isolation resulted in a candidate gene for SUS (RsSus) which appears to be homologous to AtSus3 and had a clear increase in expression in leaves during cold treatment. Photosynthetic measurements on {\textquoteleft}Nordlicht{\textquoteright} and the late flowering cultivar {\textquoteleft}Thesla{\textquoteright} showed that during cold treatment dark respiration decreased by 58\% and 63\%, respectively. Immediately after cold treatment dark respiration increased and stabilized after 3 days. The light compensation point followed the same trend as dark respiration. The quantum efficiency showed no significant changes during the first days after cold treatment, but was significantly higher than in plants with dormant flower buds, at the start of cold treatment. In conclusion, photosynthesis stabilized 3 days after cold treatment and was improved compared to the level before cold treatment.},
  author       = {Christiaens, Annelies and De Keyser, Ellen and Lootens, Peter and Rold{\`a}n-Ruiz, Isabel and De Riek, Jan and Gobin, Bruno and Van Labeke, Marie-Christine},
  issn         = {1435-8603},
  journal      = {PLANT BIOLOGY},
  keyword      = {SEEDLINGS,LEAVES,STRESS,AZALEA,FAMILY,CULTIVARS,CHLOROPHYLL,FLUORESCENCE,DARK,ARABIDOPSIS,sucrose synthase,photosynthesis,flowering,dormancy,Carbohydrate metabolism,cold},
  language     = {eng},
  number       = {1},
  pages        = {97--105},
  title        = {Cold storage to overcome dormancy affects the carbohydrate status and photosynthetic capacity of Rhododendron simsii},
  url          = {http://dx.doi.org/10.1111/plb.12195},
  volume       = {17},
  year         = {2015},
}

Chicago
Christiaens, Annelies, Ellen De Keyser, Peter Lootens, Isabel Roldàn-Ruiz, Jan De Riek, Bruno Gobin, and Marie-Christine Van Labeke. 2015. “Cold Storage to Overcome Dormancy Affects the Carbohydrate Status and Photosynthetic Capacity of Rhododendron Simsii.” Plant Biology 17 (1): 97–105.
APA
Christiaens, A., De Keyser, E., Lootens, P., Roldàn-Ruiz, I., De Riek, J., Gobin, B., & Van Labeke, M.-C. (2015). Cold storage to overcome dormancy affects the carbohydrate status and photosynthetic capacity of Rhododendron simsii. PLANT BIOLOGY, 17(1), 97–105.
Vancouver
1.
Christiaens A, De Keyser E, Lootens P, Roldàn-Ruiz I, De Riek J, Gobin B, et al. Cold storage to overcome dormancy affects the carbohydrate status and photosynthetic capacity of Rhododendron simsii. PLANT BIOLOGY. 2015;17(1):97–105.
MLA
Christiaens, Annelies, Ellen De Keyser, Peter Lootens, et al. “Cold Storage to Overcome Dormancy Affects the Carbohydrate Status and Photosynthetic Capacity of Rhododendron Simsii.” PLANT BIOLOGY 17.1 (2015): 97–105. Print.