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Steroidal glycoalkaloids in Solanum chacoense
Year:
2012
Source of publication :
Phytochemistry
Authors :
גינזברג, עידית
;
.
Volume :
75
Co-Authors:
Mweetwa, A.M., Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, United States, School of Agricultural Science, University of Zambia, Lusaka, Zambia
Hunter, D., Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, United States
Poe, R., Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, United States
Harich, K.C., Department of Biochemistry, Virginia Tech, Blacksburg, VA 24061, United States
Ginzberg, I., Institute of Plant Sciences, Volcani Center, Bet Dagan 50250, Israel
Veilleux, R.E., Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, United States
Tokuhisa, J.G., Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, United States
Facilitators :
From page:
32
To page:
40
(
Total pages:
9
)
Abstract:
Potato (Solanum tuberosum L.), a domesticated species that is the fourth most important world agricultural commodity, requires significant management to minimize the effects of herbivore and pathogen damage on crop yield. A wild relative, Solanum chacoense Bitt., has been of interest to plant breeders because it produces an abundance of novel steroidal glycoalkaloid compounds, leptines and leptinines, which are particularly effective deterrents of herbivory by the Colorado potato beetle (Leptinotarsa decemlineata Say). Biochemical approaches were used in this study to investigate the formation and accumulation of SGAs in S. chacoense. SGA contents were determined in various organs at different stages of organ maturity during a time course of plant development. Leptines and leptinines were the main contributors to the increased levels in SGA concentration measured in the aerial versus the subterranean organs of S. chacoense accession 8380-1. Leptines were not detected in aboveground stolons until the stage where shoots had formed mature chlorophyllous leaves. To gain insights into SGA biosynthesis, the abundance of SGAs and steady-state transcripts of genes coding for enzymes of the central terpene and SGA-specific pathways in various plant organs at anthesis were compared. For two genes of primary terpene metabolism, transcript and SGA abundances were correlated, although with some discrepancies. For genes associated with SGA biosynthesis, transcripts were not detected in some tissues containing SGAs; however these transcripts were detected in the progenitor tissues, indicating the possibility that under our standard growth conditions, SGA biosynthesis is largely limited to highly proliferative tissues such as shoot, root and floral meristems. © 2011 Elsevier Ltd. All rights reserved.
Note:
Related Files :
chemistry
Developmental profile
Growth, Development and Aging
metabolism
plant extract
Solanaceae
Solanum
Solanum tuberosum
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.phytochem.2011.12.003
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
22278
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:50
You may also be interested in
Scientific Publication
Steroidal glycoalkaloids in Solanum chacoense
75
Mweetwa, A.M., Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, United States, School of Agricultural Science, University of Zambia, Lusaka, Zambia
Hunter, D., Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, United States
Poe, R., Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, United States
Harich, K.C., Department of Biochemistry, Virginia Tech, Blacksburg, VA 24061, United States
Ginzberg, I., Institute of Plant Sciences, Volcani Center, Bet Dagan 50250, Israel
Veilleux, R.E., Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, United States
Tokuhisa, J.G., Department of Horticulture, Virginia Tech, Blacksburg, VA 24061, United States
Steroidal glycoalkaloids in Solanum chacoense
Potato (Solanum tuberosum L.), a domesticated species that is the fourth most important world agricultural commodity, requires significant management to minimize the effects of herbivore and pathogen damage on crop yield. A wild relative, Solanum chacoense Bitt., has been of interest to plant breeders because it produces an abundance of novel steroidal glycoalkaloid compounds, leptines and leptinines, which are particularly effective deterrents of herbivory by the Colorado potato beetle (Leptinotarsa decemlineata Say). Biochemical approaches were used in this study to investigate the formation and accumulation of SGAs in S. chacoense. SGA contents were determined in various organs at different stages of organ maturity during a time course of plant development. Leptines and leptinines were the main contributors to the increased levels in SGA concentration measured in the aerial versus the subterranean organs of S. chacoense accession 8380-1. Leptines were not detected in aboveground stolons until the stage where shoots had formed mature chlorophyllous leaves. To gain insights into SGA biosynthesis, the abundance of SGAs and steady-state transcripts of genes coding for enzymes of the central terpene and SGA-specific pathways in various plant organs at anthesis were compared. For two genes of primary terpene metabolism, transcript and SGA abundances were correlated, although with some discrepancies. For genes associated with SGA biosynthesis, transcripts were not detected in some tissues containing SGAs; however these transcripts were detected in the progenitor tissues, indicating the possibility that under our standard growth conditions, SGA biosynthesis is largely limited to highly proliferative tissues such as shoot, root and floral meristems. © 2011 Elsevier Ltd. All rights reserved.
Scientific Publication
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