Reference : Inhibition of ethylene synthesis reduces salt-tolerance in tomato wild relative speci...
Scientific journals : Article
Life sciences : Environmental sciences & ecology
Life sciences : Phytobiology (plant sciences, forestry, mycology...)
Life sciences : Agriculture & agronomy
http://hdl.handle.net/2268/206509
Inhibition of ethylene synthesis reduces salt-tolerance in tomato wild relative species Solanum chilense
English
Gharbi, E. [Groupe de Recherche en Physiologie végétale (GRPV), Earth and Life Institute – Agronomy (ELI-A), Université catholique de Louvain, Louvain-la-Neuve, Belgium, Laboratoire d'Ecologie végétale, Faculté des Sciences, Université de Tunis El Manar, Tunisia]
Martínez, J.-P. [Instituto de Investigaciones Agropecuarias (INIA – La Cruz), La Cruz, Chile]
Benahmed, H. [Laboratoire d'Ecologie végétale, Faculté des Sciences, Université de Tunis El Manar, Tunisia]
Lepoint, Gilles mailto [Université de Liège > Département de Biologie, Ecologie et Evolution > Océanographie biologique >]
Vanpee, B. [Groupe de Recherche en Physiologie végétale (GRPV), Earth and Life Institute – Agronomy (ELI-A), Université catholique de Louvain, Louvain-la-Neuve, Belgium]
Quinet, M. [Groupe de Recherche en Physiologie végétale (GRPV), Earth and Life Institute – Agronomy (ELI-A), Université catholique de Louvain, Louvain-la-Neuve, Belgium]
Lutts, S. mailto [Groupe de Recherche en Physiologie végétale (GRPV), Earth and Life Institute – Agronomy (ELI-A), Université catholique de Louvain, Louvain-la-Neuve, Belgium]
2017
Journal of Plant Physiology
Elsevier GmbH
210
24-37
Yes (verified by ORBi)
International
0176-1617
[en] Ethylene ; Halophyte ; Salinity ; Solanum chilense ; Stomatal conductance ; Tomato
[en] Exposure to salinity induces a burst in ethylene synthesis in the wild tomato halophyte plant species Solanum chilense. In order to gain information on the role of ethylene in salt adaptation, plants of Solanum chilense (accession LA4107) and of cultivated glycophyte Solanum lycopersicum (cv. Ailsa Craig) were cultivated for 7 days in nutrient solution containing 0 or 125 mM NaCl in the presence or absence of the inhibitor of ethylene synthesis (aminovinylglycine (AVG) 2 μM). Salt-induced ethylene synthesis in S. chilense occurred concomitantly with an increase in stomatal conductance, an efficient osmotic adjustment and the maintenance of carbon isotope discrimination value (Δ13C). In contrast, in S. lycopersicum, salt stress decreased stomatal conductance and Δ13C values while osmotic potential remained higher than in S. chilense. Inhibition of stress-induced ethylene synthesis by AVG decreased stomatal conductance and Δ13C in S. chilense and compromised osmotic adjustment. Solanum chilense behaved as an includer and accumulated high amounts of Na in the shoot but remained able to maintain K nutrition in the presence of NaCl. This species however did not stimulate the expression of genes coding for high-affinity K transport but genes coding for ethylene responsive factor ERF5 and JREF1 were constitutively more expressed in S. chilense than in S. lycopersicum. It is concluded that ethylene plays a key role in salt tolerance of S. chilense. © 2016
Wallonie Bruxelles International ; Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
WBI; 15/63179
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/206509
10.1016/j.jplph.2016.12.001

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