Changes in polyamines, proline and ethylene in sunflower calluses treated with NaCl

Responses of sunflower tissues to NaCl stress were studied in control (C), salt-stressed (S) and salt-adapted (T) calluses in terms of proline, polyamines and ethylene content for a period of 21 days. Salt-adapted calluses showed their adaptation to salinity by growing in the medium with 175 mM NaCl...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Alvarez, I., Tomaro, M.L., Benavides, M.P.
Formato: JOUR
Materias:
Ethylene
Helianthus annuus L.
Polyamines
Proline
Salt tolerance
Sunflower calluses
Amines
Salts
Synthesis (chemical)
Tissue
Stress tolerance
Plants (botany)
Helianthus
Helianthus annuus
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01676857_v74_n1_p51_Alvarez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01676857_v74_n1_p51_Alvarez
record_format dspace
spelling todo:paper_01676857_v74_n1_p51_Alvarez2023-10-03T15:05:08Z Changes in polyamines, proline and ethylene in sunflower calluses treated with NaCl Alvarez, I. Tomaro, M.L. Benavides, M.P. Ethylene Helianthus annuus L. Polyamines Proline Salt tolerance Sunflower calluses Amines Ethylene Salts Synthesis (chemical) Tissue Stress tolerance Plants (botany) Helianthus Helianthus annuus Responses of sunflower tissues to NaCl stress were studied in control (C), salt-stressed (S) and salt-adapted (T) calluses in terms of proline, polyamines and ethylene content for a period of 21 days. Salt-adapted calluses showed their adaptation to salinity by growing in the medium with 175 mM NaCl, at a similar rate than C calluses on medium without salt. Proline concentration was 27 times higher in salt-adapted calluses compared to control calluses at time 0, but salt stressed calluses (S calluses) were able to increase proline by day 21, demonstrating that proline was not just an osmoregulator but might be involved in other responses in sunflower salt-stressed calluses. Putrescine (Put) was the most abundant polyamine in C calluses at time 0, while spermidine (Spd) was the main polyamine in salt tolerant (T) calluses. Ethylene increased in C calluses until day 14, decreasing thereafter. In salt-adapted calluses, ethylene increased significantly over the concentration in C and S calluses by the end of the experiment. In control calluses, the highest level of total polyamines and the lowest of ethylene was found on day 21, while T calluses synthesized the highest ethylene level and had the lower polyamines level by this time. It seems that in salt-adapted calluses ethylene was related to stress tolerance and in salt sensitive tissues (S calluses), ethylene formation was related to senescence. The present data suggests a close relationship between proline, polyamines, ethylene and salt-stress tolerance in sunflower dedifferentiated tissues. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01676857_v74_n1_p51_Alvarez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Ethylene
Helianthus annuus L.
Polyamines
Proline
Salt tolerance
Sunflower calluses
Amines
Ethylene
Salts
Synthesis (chemical)
Tissue
Stress tolerance
Plants (botany)
Helianthus
Helianthus annuus
spellingShingle Ethylene
Helianthus annuus L.
Polyamines
Proline
Salt tolerance
Sunflower calluses
Amines
Ethylene
Salts
Synthesis (chemical)
Tissue
Stress tolerance
Plants (botany)
Helianthus
Helianthus annuus
Alvarez, I.
Tomaro, M.L.
Benavides, M.P.
Changes in polyamines, proline and ethylene in sunflower calluses treated with NaCl
topic_facet Ethylene
Helianthus annuus L.
Polyamines
Proline
Salt tolerance
Sunflower calluses
Amines
Ethylene
Salts
Synthesis (chemical)
Tissue
Stress tolerance
Plants (botany)
Helianthus
Helianthus annuus
description Responses of sunflower tissues to NaCl stress were studied in control (C), salt-stressed (S) and salt-adapted (T) calluses in terms of proline, polyamines and ethylene content for a period of 21 days. Salt-adapted calluses showed their adaptation to salinity by growing in the medium with 175 mM NaCl, at a similar rate than C calluses on medium without salt. Proline concentration was 27 times higher in salt-adapted calluses compared to control calluses at time 0, but salt stressed calluses (S calluses) were able to increase proline by day 21, demonstrating that proline was not just an osmoregulator but might be involved in other responses in sunflower salt-stressed calluses. Putrescine (Put) was the most abundant polyamine in C calluses at time 0, while spermidine (Spd) was the main polyamine in salt tolerant (T) calluses. Ethylene increased in C calluses until day 14, decreasing thereafter. In salt-adapted calluses, ethylene increased significantly over the concentration in C and S calluses by the end of the experiment. In control calluses, the highest level of total polyamines and the lowest of ethylene was found on day 21, while T calluses synthesized the highest ethylene level and had the lower polyamines level by this time. It seems that in salt-adapted calluses ethylene was related to stress tolerance and in salt sensitive tissues (S calluses), ethylene formation was related to senescence. The present data suggests a close relationship between proline, polyamines, ethylene and salt-stress tolerance in sunflower dedifferentiated tissues.
format JOUR
author Alvarez, I.
Tomaro, M.L.
Benavides, M.P.
author_facet Alvarez, I.
Tomaro, M.L.
Benavides, M.P.
author_sort Alvarez, I.
title Changes in polyamines, proline and ethylene in sunflower calluses treated with NaCl
title_short Changes in polyamines, proline and ethylene in sunflower calluses treated with NaCl
title_full Changes in polyamines, proline and ethylene in sunflower calluses treated with NaCl
title_fullStr Changes in polyamines, proline and ethylene in sunflower calluses treated with NaCl
title_full_unstemmed Changes in polyamines, proline and ethylene in sunflower calluses treated with NaCl
title_sort changes in polyamines, proline and ethylene in sunflower calluses treated with nacl
url http://hdl.handle.net/20.500.12110/paper_01676857_v74_n1_p51_Alvarez
work_keys_str_mv AT alvarezi changesinpolyaminesprolineandethyleneinsunflowercallusestreatedwithnacl
AT tomaroml changesinpolyaminesprolineandethyleneinsunflowercallusestreatedwithnacl
AT benavidesmp changesinpolyaminesprolineandethyleneinsunflowercallusestreatedwithnacl
_version_ 1807324590936948736

Ejemplares similares