Combination of β-Aminobutyric Acid and Ca²⁺ Alleviates Chilling Stress in Tobacco (Nicotiana tabacum L.).

ABSTRACT: Chilling is a major abiotic factor limiting the growth, development, and productivity of plants. β-aminobutyric acid (BABA), a new environmentally friendly agent, is widely used to induce plant resistance to biotic and abiotic stress. Calcium, as a signaling substance, participates in various physiological activities in cells and plays a positive role in plant defense against cold conditions. In this study, we used tobacco as a model plant to determine whether BABA could alleviate chilling stress and further to explore the relationship between BABA and Ca²⁺. The results showed that 0.2 mM BABA significantly reduced the damage to tobacco seedlings from chilling stress, as evidenced by an increase in photosynthetic pigments, the maintenance of cell structure, and upregulated expre

SUBMITTER: Ma XH 

PROVIDER: S-EPMC7237732 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature