Linked Life Data

11537974

Source:http://linkedlifedata.com/resource/pubmed/id/11537974

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1998-3-21
pubmed:abstractText
We grew 2.4 m2 wheat canopies in a large growth chamber under high photosynthetic photon flux (1000 micromoles m-2 s-1) and using two CO2 concentrations, 360 and 1200 micromoles mol-1. Photosynthetically active radiation (400-700 nm) was attenuated slightly faster through canopies grown in 360 micromoles mol-1 than through canopies grown in 1200 micromoles mol-1, even though high-CO2 canopies attained larger leaf area indices. Tissue fractions were sampled from each 5-cm layer of the canopies. Leaf tissue sampled from the tops of canopies grown in 1200 micromoles mol-1 accumulated significantly more total non-structural carbohydrate, starch, fructan, sucrose, and glucose (p < 0.05) than for canopies grown in 360 micromoles mol-1. Non-structural carbohydrate did not significantly increase in the lower canopy layers of the elevated CO2 treatment. Elevated CO2 induced fructan synthesis in all leaf tissue fractions, but fructan formation was greatest in the uppermost leaf area. A moderate temperature reduction of 10 degrees C over 5 d increased starch, fructan and glucose levels in canopies grown in 1200 micromoles mol-1, but concentrations of sucrose and fructose decreased slightly or remained unchanged. Those results may correspond with the use of fructosyl-residues and release of glucose when sucrose is consumed in fructan synthesis.
pubmed:keyword
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
S
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0140-7791
pubmed:author
pubmed:issnType
Print
pubmed:volume
17
pubmed:owner
NASA
pubmed:authorsComplete
Y
pubmed:pagination
435-42
pubmed:dateRevised
2007-8-1
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
The influence of elevated CO2 on non-structural carbohydrate distribution and fructan accumulation in wheat canopies.
pubmed:affiliation
Department of Plants, Soils and Biometeorology, Utah State University, Logan 84322-4820, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.