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Root transcripts associated with arsenic accumulation in hyperaccumulator Pteris vittata

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Title Root transcripts associated with arsenic accumulation
in hyperaccumulator Pteris vittata
 
Creator Potdukhe, Rasika M.
Bedi, Priyanka
Sarangi, Bijaya K
Pandey, R A
Thul, Sanjog T
 
Subject Agriculture
Botany
 
Description Hyperaccumulation of arsenic (As) by brake fern Pteris vittata has been described as an important genetic trait that provides
an option for development of a sustainable phytoremediation process for As mitigation. Accumulation of very high
concentration of arsenic in above-ground tissues may be the result of arsenic vacuole compartmentalization, but the
mechanism(s) of arsenic uptake and transport by underground tissues are largely unknown. In this study, we made an
attempt towards understanding the molecular mechanism of As hyperaccumulation in this plant. A time-dependent As
accumulation study indicates an exponential accumulation of As from 7 to 30 days of arsenic exposure in fronds, and day
3–7 in roots. Root transcriptome analysis identified 554,973 transcripts. Further, subsets of 824 transcripts were differentially
expressed between treated and control samples. Many of the genes of critical As-stress response, transcription
factors and metal transporters, biosynthesis of chelating compounds involved in uptake and accumulation mechanisms were
identified. The genes that were highly expressed such as cysteine-rich RLK, and ABC transporter G family member 26
needs further studies along with arsenite transmembrane transporter. The analysis of generated transcriptome dataset has
provided valuable information and platform for further functional studies.
 
Publisher Indian Academy of Sciences
 
Date 2018
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1180/1/0105-0115.pdf
Potdukhe, Rasika M. and Bedi, Priyanka and Sarangi, Bijaya K and Pandey, R A and Thul, Sanjog T (2018) Root transcripts associated with arsenic accumulation in hyperaccumulator Pteris vittata. Journal of Biosciences, 43 (1). pp. 105-115. ISSN 0250-5991, ESSN: 0973-7138
 
Relation https://link.springer.com/journal/12038
http://neeri.csircentral.net/1180/