Induction of hydrolytic enzyme activities in dormant seeds of Dracocephalum kotschyi Boiss. causes improvement of germination and seedling vigor indices

Ghannad, Rezvan; Haghjou, Maryam Madadkar; Raza, Ali; Hasanuzzaman, Mirza

doi:10.1007/s11738-022-03381-y

Cited by 7 publications

(1 citation statement)

References 42 publications

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“…However, other studies have shown that exogenous phytohormones can also relieve dormancy ( Yang et al, 2017 ). Interestingly, many studies have reported that exogenous GA 3 can relieve seed dormancy ( Ghannad et al, 2022 ), but it can not relieve epicotyl dormancy of P. cyrtonema seeds ( Chen et al, 2017 ). In this study, morphological observation showed that the seeding emergence rate of P. cyrtonema seeds after 30 days of sowing was significantly improved after exogenous 6-BA hormonal treatment.…”

Section: Discussionmentioning

confidence: 99%

Transcriptomics and metabolomics changes triggered by exogenous 6-benzylaminopurine in relieving epicotyl dormancy of Polygonatum cyrtonema Hua seeds

et al. 2022

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Polygonatum cyrtonema Hua is one of the most useful herbs in traditional Chinese medicine and widely used in medicinal and edible perennial plant. However, the seeds have the characteristics of epicotyl dormancy. In this study, the molecular basis for relieving epicotyl dormancy of P. cyrtonema seeds under exogenous 6-benzylaminopurine (6-BA) treatment was revealed for the first time through transcriptome and metabolomics analysis. We determined the elongation of epicotyl buds as a critical period for dormancy release and found that the content of trans-zeatin, proline, auxin and gibberellin was higher, while flavonoids and arginine were lower in the treatment group. Transcriptome analysis showed that there were significant differences in gene expression in related pathways, and the expression patterns were highly consistent with the change of metabolites in corresponding pathways. Co-expression analysis showed that cytokinin dehydrogenase of P. cyrtonema (PcCKXs) and pelargonidin in flavonoid biosynthesis, as well as L-proline, L-ornithine, and L-citrulline in arginine and proline metabolism form network modules, indicating that they have related regulatory roles. Above all, our findings provide new insight into the exogenous 6-BA relieving epicotyl dormancy of P. cyrtonema seeds.

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Section: Discussionmentioning

confidence: 99%