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Publication Type J
Authors Basyuni, M; Baba, S; Kinjo, Y; Putri, LAP; Hakim, L; Oku, H
Author Full Name Basyuni, Mohammad; Baba, Shigeyuki; Kinjo, Yuji; Putri, Lollie A. P.; Hakim, Luthfi; Oku, Hirosuke
Title Salt-dependent increase in triterpenoids is reversible upon transfer to fresh water in mangrove plants Kandelia candel and Bruguiera gymnorrhiza
Source JOURNAL OF PLANT PHYSIOLOGY
Language English
Document Type Article
Author Keywords Mangrove plant; Re-adaptation; Salinity; Triterpenoid; Triterpenoid synthase
Keywords Plus RHIZOPHORA-STYLOSA GRIFF.; FUNCTIONAL EXPRESSION; SECONDARY METABOLITES; SECRETOR MANGROVE; L. DRUCE; SALINITY; TOLERANCE; IDENTIFICATION; ROOTS; NACL
Abstract This study examined the salinity dependence of triterpenoid content and triterpenoid synthase gene expression in mangrove plants, Kandelia candel and Bruguiera gymnorrhiza (Rhizophoraceae) after long-term exposure to salinity and subsequent re-adaptation. Seedlings of the two mangrove species grown in varying salt concentrations for 4 months were divided into two treatment groups and grown for another 4 months, one group continued under the respective saline condition and the other in fresh water for re-adaptation. The total content of triterpenoids increased with increasing salinity in roots and leaves of K. candel, but only in roots in B. gymnorrhiza. This increase was reversed to a variable extent, depending on the species and organ, after transfer to freshwater. In contrast, the total content of phytosterols showed no correlation with salinity throughout the experiment. The increase in total triterpenoids was accompanied by an up-regulation of several triterpenoid synthase genes: KcMS, a multifunctional triterpenoid synthase, in roots and leaves of K. candel and BgLUS, a lupeol synthase, and BgbAS, a beta-amyrin synthase, in roots of B. gymnorrhiza. The expression of root KcCAS, a cycloartenol synthase, which is involved in phytosterol biosynthesis, was not modulated by the salinity conditions but decreased with increasing salinity in leaves, followed by the restoration to the initial level after transfer to fresh water. The concentrations of individual triterpenoids, but not of phytosterols, in the roots positively correlated with the salinity. These results reinforced the importance of triterpenoids in the adaptation of mangroves to withstand salt and/or water stress. (C) 2012 Elsevier GmbH. All rights reserved.
Author Address [Basyuni, Mohammad; Baba, Shigeyuki; Kinjo, Yuji; Oku, Hirosuke] Univ Ryukyus, Trop Biosphere Res Ctr, Nishihara, Okinawa 9030213, Japan; [Basyuni, Mohammad; Hakim, Luthfi] Univ Sumatera Utara, Dept Forestry, Fac Agr, Medan 20155, Indonesia; [Putri, Lollie A. P.] Univ Sumatera Utara, Dept Agroecotechnol, Fac Agr, Medan 20155, Indonesia
Reprint Address Oku, H (reprint author), Univ Ryukyus, Trop Biosphere Res Ctr, Nishihara, Okinawa 9030213, Japan.
E-mail Address okuhiros@comb.u-ryukyu.ac.jp
ResearcherID Number Basyuni, Mohammad/D-8537-2015
ORCID Number Basyuni, Mohammad/0000-0003-1120-8571
Funding Agency and Grant Number Directorate for Research and Community Service, Ministry of Education and Culture, Republic of Indonesia [115/SP2H/PL/Dit.Litabmas/III/2012]; Japan Society for the Promotion of Science [20.08104]
Funding Text This work was supported by a Grant-in-Aid for a Competence Grant (Contract No. 115/SP2H/PL/Dit.Litabmas/III/2012 to MB) from the Directorate for Research and Community Service, Ministry of Education and Culture, Republic of Indonesia and by a Postdoctoral Fellow (20.08104 to MB) from the Japan Society for the Promotion of Science.
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Cited Reference Count 31
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher ELSEVIER GMBH, URBAN & FISCHER VERLAG
Publisher City JENA
Publisher Address OFFICE JENA, P O BOX 100537, 07705 JENA, GERMANY
ISSN 0176-1617
29-Character Source Abbreviation J PLANT PHYSIOL
ISO Source Abbreviation J. Plant Physiol.
Publication Date DEC 1
Year Published 2012
Volume 169
Issue 18
Beginning Page 1903
Ending Page 1908
Digital Object Identifier (DOI) 10.1016/j.jplph.2012.08.005
Page Count 6
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number 068TT
Unique Article Identifier WOS:000313389800014
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