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Transcriptomic profiling of heat-stress response in potato periderm
Year:
2009
Source of publication :
Journal of Experimental Botany
Authors :
Barel, Gilli
;
.
Fogelman, Edna
;
.
Ginzberg, Idit
;
.
Muddarangappa, Thippeswamy
;
.
Ophir, Ron
;
.
Tanami, Zaccharia
;
.
Tzin, Enosh
;
.
Volume :
60
Co-Authors:
Ginzberg, I., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Barel, G., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Ophir, R., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Tzin, E., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Tanami, Z., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Muddarangappa, T., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
De Jong, W., Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853-1901, United States
Fogelman, E., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
4411
To page:
4421
(
Total pages:
11
)
Abstract:
Potato (Solanum tuberosum L.) periderm is composed of the meristematic phellogen that gives rise to an external layer of suberized phellem cells (the skin) and the internal parenchyma-like phelloderm. The continuous addition of new skin layers and the sloughing of old surface layers during tuber maturation results in smooth, shiny skin. However, smooth-skin varieties frequently develop unsightly russeting in response to high soil temperatures. Microscopic observation of microtubers exposed to high temperatures (37°C) suggested heat-enhanced development and accumulation of suberized skin-cell layers. To identify the genes involved in the periderm response to heat stress, skin and phelloderm samples collected separately from immature tubers exposed to high soil temperatures (33°C) and controls were subjected to transcriptome profiling using a potato cDNA array. As expected, the major functional group that was differentially expressed in both skin and phelloderm consisted of stress-related genes; however, while the major up-regulated phelloderm genes coded for heat-shock proteins, many of the skin's most up-regulated sequences were similar to genes involved in the development of protective/symbiotic membranes during plant-microbe interactions. The primary activities regulated by differentially expressed peridermal transcription factors were response to stress (33%) and cell proliferation and differentiation (28%), possibly reflecting the major processes occurring in the heat-treated periderm and implying the integrated activity of the stress response and tissue development. Accumulating data suggest that the periderm, a defensive tissue, responds to heat stress by enhancing the production and accumulation of periderm/skin layers to create a thick protective cover. Skin russeting may be an indirect outcome; upon continued expansion of the tuber, the inflexible skin cracks while new layers are produced below it, resulting in a rough skin texture.
Note:
Related Files :
Genetics
heat stress
meristem
metabolism
Solanum tuberosum
Show More
Related Content
More details
DOI :
10.1093/jxb/erp281
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28856
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:42
Scientific Publication
Transcriptomic profiling of heat-stress response in potato periderm
60
Ginzberg, I., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Barel, G., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Ophir, R., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Tzin, E., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Tanami, Z., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Muddarangappa, T., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
De Jong, W., Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853-1901, United States
Fogelman, E., Institute of Plant Sciences, ARO, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Transcriptomic profiling of heat-stress response in potato periderm
Potato (Solanum tuberosum L.) periderm is composed of the meristematic phellogen that gives rise to an external layer of suberized phellem cells (the skin) and the internal parenchyma-like phelloderm. The continuous addition of new skin layers and the sloughing of old surface layers during tuber maturation results in smooth, shiny skin. However, smooth-skin varieties frequently develop unsightly russeting in response to high soil temperatures. Microscopic observation of microtubers exposed to high temperatures (37°C) suggested heat-enhanced development and accumulation of suberized skin-cell layers. To identify the genes involved in the periderm response to heat stress, skin and phelloderm samples collected separately from immature tubers exposed to high soil temperatures (33°C) and controls were subjected to transcriptome profiling using a potato cDNA array. As expected, the major functional group that was differentially expressed in both skin and phelloderm consisted of stress-related genes; however, while the major up-regulated phelloderm genes coded for heat-shock proteins, many of the skin's most up-regulated sequences were similar to genes involved in the development of protective/symbiotic membranes during plant-microbe interactions. The primary activities regulated by differentially expressed peridermal transcription factors were response to stress (33%) and cell proliferation and differentiation (28%), possibly reflecting the major processes occurring in the heat-treated periderm and implying the integrated activity of the stress response and tissue development. Accumulating data suggest that the periderm, a defensive tissue, responds to heat stress by enhancing the production and accumulation of periderm/skin layers to create a thick protective cover. Skin russeting may be an indirect outcome; upon continued expansion of the tuber, the inflexible skin cracks while new layers are produced below it, resulting in a rough skin texture.
Scientific Publication
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