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Authors Uchiya, P; Escaray, FJ; Bilenca, D; Pieckenstain, F; Ruiz, OA; Menendez, AB
Author Full Name Uchiya, P.; Escaray, F. J.; Bilenca, D.; Pieckenstain, F.; Ruiz, O. A.; Menendez, A. B.
Title Salt effects on functional traits in model and in economically important Lotus species
Source PLANT BIOLOGY
Language English
Document Type Article
Author Keywords Leaf area; leaf area ratio; leaf mass fraction; Lotus spp; root length ratio; root mass fraction; salinity; specific root length
Keywords Plus PHENOTYPIC PLASTICITY; ION ACCUMULATION; LEAF-AREA; GROWTH; SALINITY; ROOT; TOLERANCE; RESPONSES; STRESS; JAPONICUS
Abstract A common stress on plants is NaCl-derived soil salinity. Genus Lotus comprises model and economically important species, which have been studied regarding physiological responses to salinity. Leaf area ratio (LAR), root length ratio (RLR) and their components, specific leaf area (SLA) and leaf mass fraction (LMF) and specific root length (SRL) and root mass fraction (RMF) might be affected by high soil salinity. We characterised L. tenuis, L. corniculatus, L. filicaulis, L. creticus, L. burtii and L. japonicus grown under different salt concentrations (0, 50, 100 and 150mm NaCl) on the basis of SLA, LMF, SRL and RMF using PCA. We also assessed effects of different salt concentrations on LAR and RLR in each species, and explored whether changes in these traits provide fitness benefit. Salinity (150mm NaCl) increased LAR in L. burtii and L. corniculatus, but not in the remaining species. The highest salt concentration caused a decrease of RLR in L. japonicus Gifu, but not in the remaining species. Changes in LAR and RLR would not be adaptive, according to adaptiveness analysis, with the exception of SLA changes in L. corniculatus. PCA revealed that under favourable conditions plants optimise surfaces for light and nutrient acquisition (SLA and SRL), whereas at higher salt concentrations they favour carbon allocation to leaves and roots (LMF and RMF) in detriment to their surfaces. PCA also showed that L. creticus subjected to saline treatment was distinguished from the remaining Lotus species. We suggest that augmented carbon partitioning to leaves and roots could constitute a salt-alleviating mechanism through toxic ion dilution.
Author Address [Uchiya, P.; Escaray, F. J.; Pieckenstain, F.; Ruiz, O. A.] Consejo Nacl Invest Cient & Tecn, IIB, UNSAM, Inst Tecnol Chascomus,INTECH, Buenos Aires, DF, Argentina; [Bilenca, D.] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Biodiversidad & Biol Expt, IEGEBA,CONICET, Buenos Aires, DF, Argentina; [Menendez, A. B.] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Biodiversidad & Biol Expt, PROPLAME,PRHIDEB,CONICET, Buenos Aires, DF, Argentina
Reprint Address Menendez, AB (reprint author), UBA, Fac Cs Exactas & Nat, Lab 14, PROPLAME,PRHIDEB,CONICET, Piso 4,Pab 2,Intendente Guiraldes 2160, Buenos Aires, DF, Argentina.
E-mail Address anamen@bg.fcen.uba.ar
ORCID Number Escaray, Francisco Jose/0000-0001-7413-3541
Funding Agency and Grant Number Agencia Nacional de Promocion Cientifica y Tecnologica/FONCyTANPCyTFONCyT; CONICETConsejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); University of Buenos Aires (UBACYT)University of Buenos Aires [GC20020120100018]
Funding Text This work was supported by grants from the Agencia Nacional de Promocion Cientifica y Tecnologica/FONCyT, CONICET and the University of Buenos Aires (UBACYT 2013-2016, GC20020120100018). P. Uchiya is a member of Comision de Investigaciones Cientificas de la Provincia de Buenos Aires.
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher WILEY
Publisher City HOBOKEN
Publisher Address 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
ISSN 1435-8603
29-Character Source Abbreviation PLANT BIOLOGY
ISO Source Abbreviation Plant Biol.
Publication Date JUL
Year Published 2016
Volume 18
Issue 4
Beginning Page 703
Ending Page 709
Digital Object Identifier (DOI) 10.1111/plb.12455
Page Count 7
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number DP6SI
Unique Article Identifier WOS:000378628700018
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