Improved resistance to controlled deterioration in transgenic seeds

Area of Science:

• Plant science
• Molecular biology
• Genetics

Background:

• Heat shock proteins (HSPs) play a role in plant stress tolerance.
• Transcription factors regulate gene expression in response to environmental stimuli.
• Seed longevity is crucial for agriculture and crop yield.

Purpose of the Study:

• To investigate the effect of sunflower HaHSFA9 transcription factor overexpression on heat shock protein accumulation and seed quality in tobacco.
• To assess the impact of HaHSFA9 on seed thermotolerance and resistance to deterioration.

Main Methods:

• Seed-specific genetic transformation of tobacco with the sunflower HaHSFA9 gene.
• Analysis of heat shock protein and late embryogenesis abundant protein accumulation via molecular techniques.
• Assessment of seed thermotolerance and controlled deterioration resistance.

Main Results:

• Overexpression of HaHSFA9 significantly enhanced heat shock protein accumulation in transgenic tobacco seeds.
• Transgenic seeds exhibited increased basal thermotolerance and improved resistance to controlled deterioration.
• No detrimental effects on plant growth, seed morphology, or total seed yield were observed.

Conclusions:

• Sunflower HaHSFA9 enhances seed thermotolerance and longevity by increasing HSP accumulation.
• HaHSFA9 overexpression is a promising strategy for improving seed quality in crops.
• This research has implications for enhancing the storability and viability of agricultural seeds.