title: The ectomycorrhizal fungus Scleroderma bermudense alleviates salt stress in seagrape (Coccoloba uvifera L.) seedlings.
abstract: The purpose of this study was to test the capacity of the ectomycorrhizal (ECM) fungus, Scleroderma bermudense, to alleviate saline stress in seagrape (Coccoloba uvifera L.) seedlings. Plants were grown over a range (0, 200, 350 and 500 mM) of NaCl levels for 12 weeks, after 4 weeks of non-saline pre-treatment under greenhouse conditions. Growth and mineral nutrition of the seagrape seedlings were stimulated by S. bermudense regardless of salt stress. Although ECM colonization was reduced with increasing NaCl levels, ECM dependency of seagrape seedlings increased. Tissues of ECM plants had significantly increased concentrations of P and K but lower Na and Cl concentrations than those of non-ECM plants. Higher K concentrations in the leaves of ECM plants suggested a higher osmoregulating capacity of these plants. Moreover, the water status of ECM plants was improved despite their higher evaporative leaf surface. The results suggest that the reduction in Na and Cl uptake together with a concomitant increase in P and K absorption and a higher water status in ECM plants may be important salt-alleviating mechanisms for seagrape seedlings growing in saline soils.
authors.affiliation: Laboratoire de biologie et physiologie végétales, Faculté des sciences exactes et naturelles, Université des Antilles et de la Guyane, BP. 592, 97159, Pointe-à-Pitre, Guadeloupe, France.|Laboratoire de mycologie-flore pathogène du sol, Unité de recherches en productions végétales, Domaine de Duclos, 97170 Petit-Bourg, INRA centre Antilles-Guyane, Guadeloupe, France.
authors.forename: E
authors.initials: E
authors.lastname: Bandou
authors.affiliation: Laboratoire de biologie et physiologie végétales, Faculté des sciences exactes et naturelles, Université des Antilles et de la Guyane, BP. 592, 97159, Pointe-à-Pitre, Guadeloupe, France.
authors.forename: F
authors.initials: F
authors.lastname: Lebailly
authors.affiliation: Laboratoire de biologie et physiologie végétales, Faculté des sciences exactes et naturelles, Université des Antilles et de la Guyane, BP. 592, 97159, Pointe-à-Pitre, Guadeloupe, France.
authors.forename: F
authors.initials: F
authors.lastname: Muller
authors.affiliation: Laboratoire de biologie et physiologie végétales, Faculté des sciences exactes et naturelles, Université des Antilles et de la Guyane, BP. 592, 97159, Pointe-à-Pitre, Guadeloupe, France.
authors.forename: M
authors.initials: M
authors.lastname: Dulormne
authors.affiliation: Laboratoire de mycologie-flore pathogène du sol, Unité de recherches en productions végétales, Domaine de Duclos, 97170 Petit-Bourg, INRA centre Antilles-Guyane, Guadeloupe, France.
authors.forename: A
authors.initials: A
authors.lastname: Toribio
authors.affiliation: Laboratoire de biologie et physiologie végétales, Faculté des sciences exactes et naturelles, Université des Antilles et de la Guyane, BP. 592, 97159, Pointe-à-Pitre, Guadeloupe, France.
authors.forename: J
authors.initials: J
authors.lastname: Chabrol
authors.affiliation: Département de botanique, Faculté des sciences pharmaceutiques et biologiques, Université de Lille, BP. 83, F-59006, Lille Cedex, France.
authors.forename: R
authors.initials: R
authors.lastname: Courtecuisse
authors.affiliation: INRA, UMR BGA, 17 rue Sully, 21065, Dijon, France.
authors.forename: C
authors.initials: C
authors.lastname: Plenchette
authors.affiliation: Laboratoire des symbioses tropicales et méditerranéennes,UMR 113 IRD/INRA/AGRO-M/CIRAD/UM2, TA10/J, Campus international de Baillarguet, 34398, Montpellier cedex, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Prin
authors.affiliation: Laboratoire des symbioses tropicales et méditerranéennes,UMR 113 IRD/INRA/AGRO-M/CIRAD/UM2, TA10/J, Campus international de Baillarguet, 34398, Montpellier cedex, France.|Laboratoire commun de microbiologie IRD/ISRA/UCAD, BP. 1386, CP 18524, Dakar, Sénégal.
authors.forename: R
authors.initials: R
authors.lastname: Duponnois
authors.affiliation: Laboratoire commun de microbiologie IRD/ISRA/UCAD, BP. 1386, CP 18524, Dakar, Sénégal.
authors.forename: M
authors.initials: M
authors.lastname: Thiao
authors.affiliation: Laboratoire commun de microbiologie IRD/ISRA/UCAD, BP. 1386, CP 18524, Dakar, Sénégal.
authors.forename: S
authors.initials: S
authors.lastname: Sylla
authors.affiliation: Laboratoire des symbioses tropicales et méditerranéennes,UMR 113 IRD/INRA/AGRO-M/CIRAD/UM2, TA10/J, Campus international de Baillarguet, 34398, Montpellier cedex, France.
authors.forename: B
authors.initials: B
authors.lastname: Dreyfus
authors.affiliation: Laboratoire de biologie et physiologie végétales, Faculté des sciences exactes et naturelles, Université des Antilles et de la Guyane, BP. 592, 97159, Pointe-à-Pitre, Guadeloupe, France. amadou.ba@univ-ag.fr.|Laboratoire des symbioses tropicales et méditerranéennes,UMR 113 IRD/INRA/AGRO-M/CIRAD/UM2, TA10/J, Campus international de Baillarguet, 34398, Montpellier cedex, France. amadou.ba@univ-ag.fr.
authors.forename: A M
authors.initials: AM
authors.lastname: Bâ
mesh_terms: D004305:Dose-Response Relationship, Drug; D038821:Mycorrhizae / Q000378:metabolism*; D018515:Plant Leaves / Q000187:drug effects / Q000254:growth & development / Q000382:microbiology; D018517:Plant Roots / Q000187:drug effects / Q000254:growth & development / Q000382:microbiology; D018520:Plant Shoots / Q000187:drug effects / Q000254:growth & development / Q000382:microbiology; D019664:Polygonaceae / Q000187:drug effects* / Q000378:metabolism / Q000382:microbiology*; D036226:Seedlings / Q000187:drug effects / Q000378:metabolism / Q000382:microbiology; D012965:Sodium Chloride / Q000494:pharmacology*
chemical_list: D012965:Sodium Chloride