Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 66, Issue 27, Pages 6975-6985Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.8b00466
Keywords
antioxidant capacity; ATP; metabolism; transcriptional regulation; vegetable
Funding
- Singapore Ministry of Education Academic Research Fund [R-143-000-583-112]
- NSFC [31371851, 31071617]
- Natural Science Foundation of Jiangsu Province [BK20141220]
- Changzhou Qihui Management & Consulting Co., Ltd. [R-143-000-616-597]
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The role of energy status in germination and sprouting of broccoli seeds was investigated by exogenous ATP and DNP treatments. With the synthesis of adenylates from 38.82 to 142.69 mg.100 g(-1) DW, the nutritive components (soluble sugar, proteins, pigments, and phenolics) and AAs were increased during germination and early sprouting (day 5). Elements of the BoSnRK2 pathway were down-regulated by more than 2 fold under the energy charge feedback inhibition. At the end of sprouting (day 7), energy depletion resulted in slowdown or reduced nutritional accumulation and antioxidant capacities. Exogenous ATP depressed the BoSnRK2 pathway by maintaining the energy status at high levels and further promoted the nutrition and antioxidant levels. It also prevented the energy depletion at day 7. On the contrary, DNP reduced the ATP contents (16.10-26.86%) and activated the BoSnRK2 pathway. It also notably suppressed the energy-consuming activities including germination, sprouts growth, and secondary metabolic synthesis.
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