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| Gaion,Lucas Aparecido; Lorevice,Paulo Guilherme; Monteiro,Carolina Cristina; Gavassi,Marina Alves; D’Amico-Damião,Victor; Gratão,Priscila Lupino; Gasparino,Eduardo Custódio; Carvalho,Rogério Falleiros. |
| ABSTRACT It is well known that phytochromes mediate a wide range of photomorphogenic processes in plants. In addition, many studies have demonstrated the involvement of phytochromes as part of abiotic stress signaling responses. However, little is known about cadmium (Cd) stress regulation by phytochromes. Thus, in this study, we used the phyA (far red-insensitive; fri), phyB1 (temporary redinsensitive; tri) and phyB2 (phyB2) tomato (Solanum lycopersicum L.) mutants to investigate the roles of these three phytochromes on Cd stress responses. The plants were grown over a 21-d period in the presence of Cd. We evaluated plant growth, Cd and chlorophyll content and anatomical changes in the leaves. The results indicated that all genotypes were affected by Cd... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abiotic stress; Heavy metal; Mutants; Plant anatomy; Solanum lycopersicum. L. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100013 |
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| Carvalho,Rogério Falleiros; Piotto,Fernando Angelo; Schmidt,Daiana; Peters,Leila Priscila; Monteiro,Carolina Cristina; Azevedo,Ricardo Antunes. |
| Seed priming with hormones has been an efficient method for increasing seed vigor as well as seedling growth under stressful conditions. These responses have in the past been attributed to the activation of antioxidant systems in a range of crops. The results described in this work show that hormonal priming with methyl jasmonate, salicylic acid or CEPA (chloroethylphosphonic acid), an ethylene (ET) releaser, does not induce the antioxidant activity of superoxide dismutase, catalase, ascorbate peroxidase or glutathione reductase in maize seedlings subjected to salt stress. The enhanced biomass of maize seedlings under salt stress that was observed only from ET priming indicates that the stress tolerance in maize from ethylene priming is a fundamental... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Antioxidant systems; Hormonal pretreatment; Salinity; Seedling growth. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000500014 |
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