Germination and antioxidant action in melon seeds exposed to salt stress
ABSTRACT Salinity influences all germination stages and may adversely affect the seedlings establishment in the field. This study aimed at assessing the effects of salt stress on the physiological potential of melon (Cucumis melo L.) seeds. Germination and activity of superoxide dismutase (SOD), cat...
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| Published in | Pesquisa agropecuária tropical Vol. 46; no. 3; pp. 336 - 342 |
|---|---|
| Main Authors | , , , , |
| Format | Journal Article |
| Language | English Portuguese |
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Escola de Agronomia/UFG
01.09.2016
Universidade Federal de Goiás |
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| Abstract | ABSTRACT Salinity influences all germination stages and may adversely affect the seedlings establishment in the field. This study aimed at assessing the effects of salt stress on the physiological potential of melon (Cucumis melo L.) seeds. Germination and activity of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) enzymes were assessed at the osmotic potentials of 0.0 MPa, -0.1 MPa, -0.2 MPa, -0.3 MPa, -0.4 MPa and -0.5 MPa. The enzymatic activity was assessed after 24 h, 48 h and 72 h of imbibition. Seed germination was zero at -0.5 MPa and 91 % and 85 % at -0.1 MPa and -0.2 MPa, respectively. In general, the activity of SOD, CAT and POX enzymes increased with the salt-induced stress, in the different times of imbibition, and these increases were more evident at -0.4 MPa and -0.5 MPa. The salt stress induced by NaCl diminishes the germination rate of melon seeds, particularly from the osmotic potential of -0.2 MPa. There is a significant increase in the activity of SOD, CAT and POX enzymes, mainly after 48 h of exposure.
RESUMO A salinidade tem influência em todas as etapas da germinação e pode afetar consideravelmente o estabelecimento de plântulas em campo. Objetivou-se avaliar os efeitos do estresse salino no potencial fisiológico de sementes de melão (Cucumis melo L.). Foram avaliadas a germinação e a atividade das enzimas superóxido dismutase (SOD), catalase (CAT) e peroxidase (POX), nos potenciais osmóticos de 0,0 MPa; -0,1 MPa; -0,2 MPa; -0,3 MPa; -0,4 Mpa; e -0,5 MPa. A atividade enzimática foi avaliada após 24 h, 48 h e 72 h de embebição. A germinação das sementes foi nula no potencial de -0,5 MPa e de 91 % e 85 %, respectivamente nos potenciais de -0,1 MPa e -0,2 MPa. De maneira geral, a atividade das enzimas SOD, CAT e POX aumentou com a indução do estresse salino, nos diferentes tempos de embebição, sendo que esses aumentos foram mais evidentes nos potenciais de -0,4 MPa e -0,5 MPa. O estresse salino induzido por NaCl reduz a germinação de sementes de melão, principalmente a partir do potencial de -0,2 MPa. Ocorre aumento significativo na atividade das enzimas SOD, CAT e POX, principalmente após 48 h de exposição. |
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| AbstractList | Salinity influences all germination stages and may adversely affect the seedlings establishment in the field. This study aimed at assessing the effects of salt stress on the physiological potential of melon (Cucumis melo L.) seeds. Germination and activity of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) enzymes were assessed at the osmotic potentials of 0.0 MPa, -0.1 MPa, -0.2 MPa, -0.3 MPa, -0.4 MPa and -0.5 MPa. The enzymatic activity was assessed after 24 h, 48 h and 72 h of imbibition. Seed germination was zero at -0.5 MPa and 91 % and 85 % at -0.1 MPa and -0.2 MPa, respectively. In general, the activity of SOD, CAT and POX enzymes increased with the salt-induced stress, in the different times of imbibition, and these increases were more evident at -0.4 MPa and -0.5 MPa. The salt stress induced by NaCl diminishes the germination rate of melon seeds, particularly from the osmotic potential of -0.2 MPa. There is a significant increase in the activity of SOD, CAT and POX enzymes, mainly after 48 h of exposure. ABSTRACT Salinity influences all germination stages and may adversely affect the seedlings establishment in the field. This study aimed at assessing the effects of salt stress on the physiological potential of melon (Cucumis melo L.) seeds. Germination and activity of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) enzymes were assessed at the osmotic potentials of 0.0 MPa, -0.1 MPa, -0.2 MPa, -0.3 MPa, -0.4 MPa and -0.5 MPa. The enzymatic activity was assessed after 24 h, 48 h and 72 h of imbibition. Seed germination was zero at -0.5 MPa and 91 % and 85 % at -0.1 MPa and -0.2 MPa, respectively. In general, the activity of SOD, CAT and POX enzymes increased with the salt-induced stress, in the different times of imbibition, and these increases were more evident at -0.4 MPa and -0.5 MPa. The salt stress induced by NaCl diminishes the germination rate of melon seeds, particularly from the osmotic potential of -0.2 MPa. There is a significant increase in the activity of SOD, CAT and POX enzymes, mainly after 48 h of exposure. ABSTRACT Salinity influences all germination stages and may adversely affect the seedlings establishment in the field. This study aimed at assessing the effects of salt stress on the physiological potential of melon (Cucumis melo L.) seeds. Germination and activity of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) enzymes were assessed at the osmotic potentials of 0.0 MPa, -0.1 MPa, -0.2 MPa, -0.3 MPa, -0.4 MPa and -0.5 MPa. The enzymatic activity was assessed after 24 h, 48 h and 72 h of imbibition. Seed germination was zero at -0.5 MPa and 91 % and 85 % at -0.1 MPa and -0.2 MPa, respectively. In general, the activity of SOD, CAT and POX enzymes increased with the salt-induced stress, in the different times of imbibition, and these increases were more evident at -0.4 MPa and -0.5 MPa. The salt stress induced by NaCl diminishes the germination rate of melon seeds, particularly from the osmotic potential of -0.2 MPa. There is a significant increase in the activity of SOD, CAT and POX enzymes, mainly after 48 h of exposure. RESUMO A salinidade tem influência em todas as etapas da germinação e pode afetar consideravelmente o estabelecimento de plântulas em campo. Objetivou-se avaliar os efeitos do estresse salino no potencial fisiológico de sementes de melão (Cucumis melo L.). Foram avaliadas a germinação e a atividade das enzimas superóxido dismutase (SOD), catalase (CAT) e peroxidase (POX), nos potenciais osmóticos de 0,0 MPa; -0,1 MPa; -0,2 MPa; -0,3 MPa; -0,4 Mpa; e -0,5 MPa. A atividade enzimática foi avaliada após 24 h, 48 h e 72 h de embebição. A germinação das sementes foi nula no potencial de -0,5 MPa e de 91 % e 85 %, respectivamente nos potenciais de -0,1 MPa e -0,2 MPa. De maneira geral, a atividade das enzimas SOD, CAT e POX aumentou com a indução do estresse salino, nos diferentes tempos de embebição, sendo que esses aumentos foram mais evidentes nos potenciais de -0,4 MPa e -0,5 MPa. O estresse salino induzido por NaCl reduz a germinação de sementes de melão, principalmente a partir do potencial de -0,2 MPa. Ocorre aumento significativo na atividade das enzimas SOD, CAT e POX, principalmente após 48 h de exposição. |
| Author | Dias, Denise Cunha Fernandes dos Santos Silva, Aparecida Leonir da Pinheiro, Daniel Teixeira Sekita, Marcelo Coelho Silva, Laércio Junio da |
| AuthorAffiliation | Universidade Federal de Viçosa Universidade de São Paulo Grupo Sekita |
| AuthorAffiliation_xml | – name: Universidade de São Paulo – name: Universidade Federal de Viçosa – name: Grupo Sekita |
| Author_xml | – sequence: 1 givenname: Daniel Teixeira surname: Pinheiro fullname: Pinheiro, Daniel Teixeira organization: Universidade Federal de Viçosa, Brazil – sequence: 2 givenname: Aparecida Leonir da surname: Silva fullname: Silva, Aparecida Leonir da organization: Universidade de São Paulo, Brazil – sequence: 3 givenname: Laércio Junio da surname: Silva fullname: Silva, Laércio Junio da organization: Universidade Federal de Viçosa, Brazil – sequence: 4 givenname: Marcelo Coelho surname: Sekita fullname: Sekita, Marcelo Coelho organization: Grupo Sekita, Brazil – sequence: 5 givenname: Denise Cunha Fernandes dos Santos surname: Dias fullname: Dias, Denise Cunha Fernandes dos Santos organization: Universidade Federal de Viçosa, Brazil |
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| CitedBy_id | crossref_primary_10_3390_horticulturae7110421 crossref_primary_10_1007_s40626_021_00196_z crossref_primary_10_1590_s1678_3921_pab2023_v58_03298 crossref_primary_10_1590_2317_1545v39n4188530 crossref_primary_10_3390_plants12173023 crossref_primary_10_1088_1755_1315_260_1_012134 crossref_primary_10_3390_fermentation8020041 |
| Cites_doi | 10.1007/s10725-010-9445-1 10.1155/2012/217037 10.1016/j.plaphy.2010.08.016 10.5586/asbp.2013.023 10.1590/S0102-05362014000100013 10.17801/0101-3122/rbs.v22n2p39-44 10.1017/S0960258513000093 10.3906/biy-1210-55 10.1104/pp.109.4.1247 10.1126/science.1130481 10.1016/0003-2697(76)90527-3 10.1590/1983-40632015v4535357 10.1016/0003-2697(71)90370-8 10.1016/j.sajb.2011.08.008 10.1016/j.jplph.2012.06.001 10.1007/s11738-013-1303-0 10.1016/S1360-1385(02)02312-9 10.1016/j.envexpbot.2010.02.013 10.15258/sst.2008.36.2.09 10.1016/S0076-6879(55)02300-8 10.1104/pp.84.2.450 10.1104/pp.59.2.309 10.1111/jpi.12167 10.9734/AJEA/2015/15749 10.1590/S0101-31222007000300010 10.1104/pp.57.2.315 |
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| Keywords | salinidade salinity sodium enzimas Cucumis melo L enzymes sódio |
| Language | English Portuguese |
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| Snippet | ABSTRACT Salinity influences all germination stages and may adversely affect the seedlings establishment in the field. This study aimed at assessing the... Salinity influences all germination stages and may adversely affect the seedlings establishment in the field. This study aimed at assessing the effects of salt... |
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| SubjectTerms | AGRICULTURE, MULTIDISCIPLINARY AGRONOMY Cucumis melo L enzymes salinity sodium |
| Title | Germination and antioxidant action in melon seeds exposed to salt stress |
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