Seed vigour studies in corn, soybean and tomato in response to fish protein hydrolysates and consequences on phenolic-linked responses.
Seed priming with fish protein hydrolysates (FPH) has been studied for the enhancement of seed vigour of corn, soybean and tomato. The influence of FPH at 2.5 mL/L and 5.0 mL/L on traditional agronomic parameters for seed vigour (germination percentage, seedling weight, seedling height) and potential new vigour-associated parameters (phenolic content, antioxidant activity, guaiacol peroxidase (GuPX) activity, chlorophyll content) was investigated. FPH treatment preferentially stimulated seedling vigour in the following order: soybean>tomato>corn. For soybean, FPH at 2.5 mL/L and 5 mL/L improved the majority of the seed vigour parameters (seedling weight and height, phenolic content, antioxidant activity and chlorophyll content, and lignification-associated GuPX activity). Similarly, for tomato, FPH at 2.5 mL/L stimulated seedling weight and height, GuPX activity and chlorophyll content. However, FPH did not stimulate corn seed vigour. Our results suggest an ability of proline precursor-rich FPH to improve of plant growth and development (e.g., seed vigour) in phenolic-rich plant species through modulation of phenolic and chlorophyll metabolisms.
Horii
Akiyo
A
Department of Food Science, University of Massachusetts, Amherst, MA 01003, United States.
McCue
Patrick
P
Shetty
Kalidas
K
D000818:Animals; D002734:Chlorophyll / Q000378:metabolism; D029941:Fish Proteins / Q000494:pharmacology*; D016166:Free Radical Scavengers / Q000378:metabolism; D018525:Germination / Q000187:drug effects; D018551:Solanum lycopersicum / Q000033:anatomy & histology / Q000187:drug effects* / Q000254:growth & development; D009195:Peroxidase / Q000378:metabolism; D010636:Phenols / Q000378:metabolism; D011492:Protein Hydrolysates / Q000494:pharmacology*; D036226:Seedlings / Q000033:anatomy & histology / Q000187:drug effects / Q000254:growth & development; D012639:Seeds / Q000033:anatomy & histology / Q000187:drug effects / Q000254:growth & development; D013025:Glycine max / Q000033:anatomy & histology / Q000187:drug effects* / Q000254:growth & development; D003313:Zea mays / Q000033:anatomy & histology / Q000187:drug effects* / Q000254:growth & development
D029941:Fish Proteins; D016166:Free Radical Scavengers; D010636:Phenols; D011492:Protein Hydrolysates; D002734:Chlorophyll; C121048:guaiacol peroxidase; D009195:Peroxidase