| |
| DOI: | 10.2307/3760573 |
|---|
| Web URL(s): | http://www.jstor.org/stable/3760573
Last checked: 06/12/2014
Access conditions: Item is within a limited-access website
http://www.jstor.org/stable/pdfplus/3760573.pdf
Last checked: 06/12/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Lam, Cuong K.;
Belanger, Faith C.;
White, James F. Jr.;
Daie, Jaleh |
|---|
| Author Affiliation: | Lam and Belanger: Plant Science Department, Rutgers University, New Brunswick, New Jersey; White: Department of Botany, Auburn University at Montgomery, Montgomery, Alabama; Daie: Department of Botany, University of Wisconsin, Madison, Wisconsin |
|---|
| Title: | Mechanism and rate of sugar uptake by Acremonium typhinum, an endophytic fungus infecting Festuca rubra: Evidence for presence of a cell wall invertase in endophytic fungi |
|---|
| Section: | Physiology/biochemistry
Other records with the "Physiology/biochemistry" Section
|
|---|
| Source: | Mycologia. Vol. 86, No. 3, May/June 1994, p. 408-415. |
|---|
| Publishing Information: | Lancaster, Pennsylvania: New Era Print Co. for the New York Botanical Garden |
|---|
| # of Pages: | 8 |
|---|
| Related Web URL: | http://www.jstor.org/stable/info/3760573#abstract
Last checked: 06/12/2014
Notes: Abstract only |
|---|
| Keywords: | TIC Keywords: Acremonium typhinum; Endophytic fungi; Festuca rubra; Fructose; Fungus behavior; Glucose; Invertase; Nutrient absorption; Physiological processes; Sucrose; Symbiosis; Sympatric species; Uptake
|
|---|
| Abstract/Contents: | "Fungal endophytes of the genus Acremonium infect many grass species. They exist in the intercellular spaces of the aerial plant parts, most abundantly in the leaf sheaths. They therefore must obtain all of their nutrients from the apoplastic spaces in the plant. This report is the first comprehensive, biochemically based study of sugar uptake by Acremonium spp. The endophytes (Acremonium typhinum) were isolated from Festuca rubra plants and were grown in culture. Individual colonies were incubated in the presence of [U- 14C]radiolabeled glucose, fructose, or sucrose for 20 minutes and the uptake quantified by scintillation counting. The uptake rates for all three sugars were biphasic, indicating two distinct mechanisms of transport. At low sugar concentrations (below 10 mM) the uptake was saturable and had the characteristics of a carrier-mediated mechanism. At high sugar concentrations (10-100 mM) the uptake was linear suggesting diffusion as the predominant mechanism of uptake. From competition experiments (uptake of labeled sugar in the presence of a different unlabeled sugar) it appeared that there were separate carriers for glucose and fructose. Two mechanisms for sucrose uptake were detected, a sucrose carrier and hexose uptake as a result of cell wall invertase. Cell wall invertase activity of the fungal isolates was inducible by growing the fungi on sucrose containing media." |
|---|
| Language: | English |
|---|
| References: | 39 |
|---|
| Note: | Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lam, C. K., F. C. Belanger, J. F. Jr. White, and J. Daie. 1994. Mechanism and rate of sugar uptake by Acremonium typhinum, an endophytic fungus infecting Festuca rubra: Evidence for presence of a cell wall invertase in endophytic fungi. Mycologia. 86(3):p. 408-415. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=244631 |
| If there are problems with this record, send us feedback about record 244631. |
| Choices for finding the above item: |
|---|
| DOI: 10.2307/3760573 |
| Web URL(s):
http://www.jstor.org/stable/3760573
Last checked: 06/12/2014
Access conditions: Item is within a limited-access website
http://www.jstor.org/stable/pdfplus/3760573.pdf
Last checked: 06/12/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: b2214983
MSU catalog number: b5343430 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
