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Lignin deposition in chickpea root xylem under drought

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Title Lignin deposition in chickpea root xylem under drought
 
Creator Sharma, Nilesh Kumar
Gupta, Santosh Kumar
 
Subject Cicer arietinum L.
laccases
lignin
root
drought
 
Description Accepted date: 7 April 2020
In our recent publication, we have shown that a member of the Laccase family, LACCASE2 (LAC2) acted
as a negative regulator of lignin deposition in the root xylem tissue of Arabidopsis thaliana. LAC2
messenger RNA (mRNA) level was post-transcriptionally regulated by microRNA 397b, which showed
increased expression under water and phosphate deficiency, resulting in the downregulation of LAC2
expression In this report, we have investigated root growth and lignin deposition in an economically
important legume crop chickpea (Cicer arietinum L.) in response to natural drought in soil-grown
condition. In contrast to the growth retardation of Arabidopsis root in mannitol-supplemented medium,
chickpea root showed an increase in length in low soil moisture condition. Lignin estimation in the
primary root showed an increase in lignin content, which was substantiated by staining of root xylem.
Drought treatment enhanced the expression of four out of six LAC genes tested, while the expression of
two was downregulated. Our preliminary study indicateed a molecular mechanism of lignin deposition
in chickpea root xylem during drought.
The project is funded by the Department of Biotechnology (DBT),
Ministry of Science and Technology, Government of India (BT/
PR3304/AGR/02/815/2011 & BT/HRD/35/01/03/2014 to DC) and
National Institute of Plant Genome Research, India. NKS is supported
by a fellowship from the Department of Biotechnology (DBT, Govt. of
India). The funders had no role in study design, data collection and
analysis, decision to publish, or preparation of the manuscript. The
assistance of central instrumentation facilities of NIPGR in various
experiments is acknowledged. The authors are grateful to the DBTeLibrary Consortium (DeLCON) for providing access to e-Resources.
The authors have no conflicts of interest to declare.
 
Date 2020-04-19T15:23:16Z
2020-04-19T15:23:16Z
2020
 
Type Article
 
Identifier Plant Signaling & Behavior, 15: 1754621
1559-2324
https://doi.org/10.1080/15592324.2020.1754621
https://www.tandfonline.com/doi/full/10.1080/15592324.2020.1754621
http://223.31.159.10:8080/jspui/handle/123456789/1054
 
Language en_US
 
Format application/pdf
 
Publisher Taylor & Francis Group