Accumulation of organic and inorganic solutes in NaCl-stressed sorghum seedlings from aged and primed seeds
Although it has been known that the seed's physiological potential affects its response to osmoconditioning and abiotic stresses, researches involving seed aging and priming associated to abiotic stresses are scarce. The aim of this work was to evaluate the role of seed priming on salt toler...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universidade de São Paulo
2011-12-01
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| Series: | Scientia Agricola |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000600004 |
| _version_ | 1831525650441175040 |
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| author | Alexandre Bosco de Oliveira Nara Lídia Mendes Alencar José Tarquinio Prisco Enéas Gomes-Filho |
| author_facet | Alexandre Bosco de Oliveira Nara Lídia Mendes Alencar José Tarquinio Prisco Enéas Gomes-Filho |
| author_sort | Alexandre Bosco de Oliveira |
| collection | DOAJ |
| description | Although it has been known that the seed's physiological potential affects its response to osmoconditioning and abiotic stresses, researches involving seed aging and priming associated to abiotic stresses are scarce. The aim of this work was to evaluate the role of seed priming on salt tolerance in sorghum seedlings from seeds with two vigor levels (aged or non-aged) and to verify the organic and inorganic solute contributions as osmoregulators in NaCl-stressed seedlings from aged and primed seeds. The combinations of two seed vigor levels (aged or not), two seed types (primed or not) and two salinity levels (exposed to NaCl at 100 mM or not) were evaluated. In low physiological quality seeds (aged seeds), priming provided an attenuation of salinity's negative effects (0 or NaCl at 100 mM) on seedling growth. The accumulation of Na+ and Cl- ions in NaCl-stressed sorghum seedling shoot from primed seeds indicate a plant osmotic adjustment induced by seed priming, which was efficient in reducing the osmotic stress caused by salinity. Proline was the main organic solute that contributed to osmoregulation in NaCl-stressed sorghum seedling shoot and its levels increased due to seed priming. Changes in inorganic and organic solute contents, in both shoot and roots, could have been induced by seed priming and as a function of salt stress tolerance, although the changes in these organs were poorly related to each other. |
| first_indexed | 2024-12-16T15:54:59Z |
| format | Article |
| id | doaj.art-d9eaa786ee2a47579d189dc849728e65 |
| institution | Directory Open Access Journal |
| issn | 0103-9016 1678-992X |
| language | English |
| last_indexed | 2024-12-16T15:54:59Z |
| publishDate | 2011-12-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Scientia Agricola |
| spelling | doaj.art-d9eaa786ee2a47579d189dc849728e652022-12-21T22:25:37ZengUniversidade de São PauloScientia Agricola0103-90161678-992X2011-12-0168663263710.1590/S0103-90162011000600004Accumulation of organic and inorganic solutes in NaCl-stressed sorghum seedlings from aged and primed seedsAlexandre Bosco de OliveiraNara Lídia Mendes AlencarJosé Tarquinio PriscoEnéas Gomes-FilhoAlthough it has been known that the seed's physiological potential affects its response to osmoconditioning and abiotic stresses, researches involving seed aging and priming associated to abiotic stresses are scarce. The aim of this work was to evaluate the role of seed priming on salt tolerance in sorghum seedlings from seeds with two vigor levels (aged or non-aged) and to verify the organic and inorganic solute contributions as osmoregulators in NaCl-stressed seedlings from aged and primed seeds. The combinations of two seed vigor levels (aged or not), two seed types (primed or not) and two salinity levels (exposed to NaCl at 100 mM or not) were evaluated. In low physiological quality seeds (aged seeds), priming provided an attenuation of salinity's negative effects (0 or NaCl at 100 mM) on seedling growth. The accumulation of Na+ and Cl- ions in NaCl-stressed sorghum seedling shoot from primed seeds indicate a plant osmotic adjustment induced by seed priming, which was efficient in reducing the osmotic stress caused by salinity. Proline was the main organic solute that contributed to osmoregulation in NaCl-stressed sorghum seedling shoot and its levels increased due to seed priming. Changes in inorganic and organic solute contents, in both shoot and roots, could have been induced by seed priming and as a function of salt stress tolerance, although the changes in these organs were poorly related to each other.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000600004Sorghum bicoloraccelerated agingprimingsalinityosmoregulation |
| spellingShingle | Alexandre Bosco de Oliveira Nara Lídia Mendes Alencar José Tarquinio Prisco Enéas Gomes-Filho Accumulation of organic and inorganic solutes in NaCl-stressed sorghum seedlings from aged and primed seeds Scientia Agricola Sorghum bicolor accelerated aging priming salinity osmoregulation |
| title | Accumulation of organic and inorganic solutes in NaCl-stressed sorghum seedlings from aged and primed seeds |
| title_full | Accumulation of organic and inorganic solutes in NaCl-stressed sorghum seedlings from aged and primed seeds |
| title_fullStr | Accumulation of organic and inorganic solutes in NaCl-stressed sorghum seedlings from aged and primed seeds |
| title_full_unstemmed | Accumulation of organic and inorganic solutes in NaCl-stressed sorghum seedlings from aged and primed seeds |
| title_short | Accumulation of organic and inorganic solutes in NaCl-stressed sorghum seedlings from aged and primed seeds |
| title_sort | accumulation of organic and inorganic solutes in nacl stressed sorghum seedlings from aged and primed seeds |
| topic | Sorghum bicolor accelerated aging priming salinity osmoregulation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000600004 |
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