Amaranth's Growth and Physiological Responses to Salt Stress and the Functional Analysis of AtrTCP1 Gene.
Int J Mol Sci
; 25(10)2024 May 16.
Article
em En
| MEDLINE
| ID: mdl-38791475
ABSTRACT
Amaranth species are C4 plants that are rich in betalains, and they are tolerant to salinity stress. A small family of plant-specific TCP transcription factors are involved in the response to salt stress. However, it has not been investigated whether amaranth TCP1 is involved in salt stress. We elucidated that the growth and physiology of amaranth were affected by salt concentrations of 50-200 mmol·L-1 NaCl. The data showed that shoot and root growth was inhibited at 200 mmol·L-1, while it was promoted at 50 mmol·L-1. Meanwhile, the plants also showed physiological responses, which indicated salt-induced injuries and adaptation to the salt stress. Moreover, AtrTCP1 promoted Arabidopsis seed germination. The germination rate of wild-type (WT) and 35SAtrTCP1-GUS Arabidopsis seeds reached around 92% by the seventh day and 94.5% by the second day under normal conditions, respectively. With 150 mmol·L-1 NaCl treatment, the germination rate of the WT and 35SAtrTCP1-GUS plant seeds was 27.0% by the seventh day and 93.0% by the fourth day, respectively. Under salt stress, the transformed 35SAtrTCP1 plants bloomed when they grew 21.8 leaves after 16.2 days of treatment, which was earlier than the WT plants. The transformed Arabidopsis plants flowered early to resist salt stress. These results reveal amaranth's growth and physiological responses to salt stress, and provide valuable information on the AtrTCP1 gene.
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01-internacional
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MEDLINE
Assunto principal:
Proteínas de Plantas
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Arabidopsis
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Germinação
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Regulação da Expressão Gênica de Plantas
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Amaranthus
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Estresse Salino
Idioma:
En
Revista:
Int J Mol Sci
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China
País de publicação:
Suíça