The interactions of plant growth regulators and H2O2 during germination improvement of sweet corn seed through spermidine application

Huang, Yue; Zhang, Yuchan; Gao, Canhong; Zhan, Li; Guan, Yajing; Hu, Weimin; Hu, Jin

doi:10.1007/s10725-018-0370-z

Cited by 10 publications

(2 citation statements)

References 43 publications

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“…Huang et al [51] studied the metabolism and interaction of plant growth regulators and applications of spermidine as an enhancer of seed vigor concluding that the hormonal modifications caused were promoted by direct effects on plant growth regulators. The overall quality of seeds depends on their treatment.…”

Section: Stressesmentioning

confidence: 99%

Sweet Corn Research around the World 2015–2020

2021

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Modern sweet corn is distinguished from other vegetable corns by the presence of one or more recessive alleles within the maize endosperm starch synthesis pathway. This results in reduced starch content and increased sugar concentration when consumed fresh. Fresh sweet corn originated in the USA and has since been introduced in countries around the World with increasing popularity as a favored vegetable choice. Several reviews have been published recently on endosperm genetics, breeding, and physiology that focus on the basic biology and uses in the US. However, new questions concerning sustainability, environmental care, and climate change, along with the introduction of sweet corn in other countries have produced a variety of new uses and research activities. This review is a summary of the sweet corn research published during the five years preceding 2021.

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Section: Stressesmentioning

confidence: 99%

Sweet Corn Research around the World 2015–2020

2021

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“…In plants, PAs are involved in many physiological processes, including cell division, plant development and differentiation in response to abiotic and biotic stresses, and seed germination [ 29 , 38 , 39 , 40 ]. Multiple studies have shown that Spd effectively improves seed germination ability under stress [ 29 , 39 , 41 , 42 ]. For example, Spd enhanced starch decomposition and improved germination of wheat seeds under cold stress [ 41 ].…”

Section: Introductionmentioning

confidence: 99%

Exogenous Spermidine Promotes Germination of Aged Sorghum Seeds by Mediating Sugar Metabolism

Zhang

Wan

et al. 2022

Plants

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Starch, a substance stored in seeds, is the main source of energy for germination in sorghum seeds. However, as the seeds age, the catabolism of seed starch is affected, thereby seriously damaging germination ability. In this study, we aimed to understand how exogenous spermidine promoted germination in aged sorghum seed. Our phenotypic analysis indicated that exogenous spermidine not only significantly improved the germination rate, germination potential, germination index, and vigor index of aged seeds, but also increased the root and shoot length after germination. Further, physiological analysis showed that exogenous spermidine increased the content of soluble sugar by upregulating the activity of amylase and sucrose invertase. Exogenous spermidine also improved the activities of key enzymes in glycolysis, the tricarboxylic acid cycle, and the pentose phosphate pathway of aged sorghum seeds. Interestingly, exogenous spermidine protected the mitochondrial structure of aged seeds, which was consistent with the increase in the respiration rate and ATP content during seed germination. Moreover, qRT-PCR analysis revealed that exogenous spermidine induced the expression of key genes related to starch and sugar metabolism in aged sorghum seeds. In conclusion, our study demonstrated that exogenous spermidine promoted aged sorghum seed germination by regulating starch and sugar metabolism.

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