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פותח על ידי קלירמאש פתרונות בע"מ -
Mining a 'Georgia Jet' sweetpotato root transcriptome dataset for nutrient-responsive genes related to root system architecture variability and storage root formation
Year:
2016
Source of publication :
Acta Horticulturae
Authors :
פירון, נורית
;
.
Volume :
1118
Co-Authors:
Villordon, A.Q., Sweet Potato Research Station, Louisiana State University Agricultural Center, Chase, LA, United States
Firon, N., Institute of Plant Sciences, Volcani Center ARO, Bet Dagan, Israel
Facilitators :
From page:
39
To page:
42
(
Total pages:
4
)
Abstract:
Sweetpotato is a globally important food crop that plays a crucial role in food security in developing countries where it is often grown under marginal conditions. Sweetpotato yield is determined by the number of adventitious roots (ARs) that forms storage roots (SRs). Recent information indicates that sweetpotato root system architecture (RSA) is related to the competency of an AR to undergo SR formation (SRF). It has also been found that local nitrogen presence influenced sweetpotato RSA development which in turn influenced the uptake of mobile and non-mobile nutrients from the growth substrate. We considered this information in examining a 'Georgia Jet' root transcriptome dataset to search for genes that are related to SRF, on one hand, and are responsive to nutrient availability, on the other. Using this approach, we found that putative nitrate (NO3-) and ammonium transporters were down-regulated in initiating SRs, while a putative potassium transporter was up-regulated. In addition, we found that a homologue of the Arabidopsis ANR1 gene, a component of the signalling pathway that links external NO3- to RSA development, shows upregulated expression in initiating SRs. The same gene sequence exhibits homology to IbMADS1, shown previously to act as positive regulators of cell proliferation in root vascular tissue leading to SRF. Taken together, the evidence suggests that RSA provides an important link between environmental signals (nutrient availability) and gene networks previously associated with SRF in sweetpotatoes. This information can be useful for efficiently identifying gene-based markers in breeding programs, especially for low-input environments. © ISHS.
Note:
Related Files :
Adventitious roots
Anomalous cambium
Ipomoea batatas
Lateral roots
Lignification
עוד תגיות
תוכן קשור
More details
DOI :
10.17660/ActaHortic.2016.1118.6
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
22440
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:51
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Scientific Publication
Mining a 'Georgia Jet' sweetpotato root transcriptome dataset for nutrient-responsive genes related to root system architecture variability and storage root formation
1118
Villordon, A.Q., Sweet Potato Research Station, Louisiana State University Agricultural Center, Chase, LA, United States
Firon, N., Institute of Plant Sciences, Volcani Center ARO, Bet Dagan, Israel
Mining a 'Georgia Jet' sweetpotato root transcriptome dataset for nutrient-responsive genes related to root system architecture variability and storage root formation
Sweetpotato is a globally important food crop that plays a crucial role in food security in developing countries where it is often grown under marginal conditions. Sweetpotato yield is determined by the number of adventitious roots (ARs) that forms storage roots (SRs). Recent information indicates that sweetpotato root system architecture (RSA) is related to the competency of an AR to undergo SR formation (SRF). It has also been found that local nitrogen presence influenced sweetpotato RSA development which in turn influenced the uptake of mobile and non-mobile nutrients from the growth substrate. We considered this information in examining a 'Georgia Jet' root transcriptome dataset to search for genes that are related to SRF, on one hand, and are responsive to nutrient availability, on the other. Using this approach, we found that putative nitrate (NO3-) and ammonium transporters were down-regulated in initiating SRs, while a putative potassium transporter was up-regulated. In addition, we found that a homologue of the Arabidopsis ANR1 gene, a component of the signalling pathway that links external NO3- to RSA development, shows upregulated expression in initiating SRs. The same gene sequence exhibits homology to IbMADS1, shown previously to act as positive regulators of cell proliferation in root vascular tissue leading to SRF. Taken together, the evidence suggests that RSA provides an important link between environmental signals (nutrient availability) and gene networks previously associated with SRF in sweetpotatoes. This information can be useful for efficiently identifying gene-based markers in breeding programs, especially for low-input environments. © ISHS.
Scientific Publication
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