Changes in photosynthesis and carbohydrate metabolism in sugarcane during the development of Yellow Canopy Syndrome

Marquardt, Annelie, Scalia, Gerard, Joyce, Priya, Basnayake, Jaya and Botha, Frederik C. (2016) Changes in photosynthesis and carbohydrate metabolism in sugarcane during the development of Yellow Canopy Syndrome. Functional Plant Biology, 43 6: 523-533. doi:10.1071/FP15335


Author Marquardt, Annelie
Scalia, Gerard
Joyce, Priya
Basnayake, Jaya
Botha, Frederik C.
Title Changes in photosynthesis and carbohydrate metabolism in sugarcane during the development of Yellow Canopy Syndrome
Journal name Functional Plant Biology   Check publisher's open access policy
ISSN 1445-4416
1445-4408
Publication date 2016-05-18
Year available 2016
Sub-type Article (original research)
DOI 10.1071/FP15335
Open Access Status Not Open Access
Volume 43
Issue 6
Start page 523
End page 533
Total pages 11
Place of publication Clayton, VIC Australia
Publisher CSIRO Publishing
Collection year 2017
Language eng
Formatted abstract
Photosynthesis, stomatal conductance, electron transport, internal CO2 and sugar levels were determined in the leaves of Yellow Canopy Syndrome (YCS) symptomatic sugarcane (Saccharum spp.) plants. Two varieties from two different geographic regions in Australia, KQ228 and Q200 were used. Although visual yellowing was only evident in the lower leaves of the canopy (older than Leaf 5), photosynthesis and stomatal conductance were lower in both the yellowing leaves and those not yet showing any visible symptoms. On a canopy basis, photosynthesis was reduced by 14% and 36% in YCS symptomatic KQ228 and Q200 plants, respectively. Sucrose levels increased significantly in the leaves, reflecting some of the earliest changes induced in YCS symptomatic plants. The electron transport characteristics of dark-adapted leaves showed disruptions on both the electron acceptor and donor side of PSII. Some of these changes are characteristic of a degree of disruption to the protein structure associated with the electron transport chain. Based on the results, we propose that the first change in metabolism in the YCS symptomatic plants was an increase in sucrose in the leaves and that all the other changes are secondary effects modulated by the increased sugar levels.
Keyword Chlorosis
Fluorescence Saccharum spp.
Sucrose
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Queensland Alliance for Agriculture and Food Innovation
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 0 times in Thomson Reuters Web of Science Article
Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Sun, 26 Jun 2016, 00:25:19 EST by System User on behalf of Qld Alliance for Agriculture and Food Innovation