Appropriate nitrogen application enhances saponin synthesis and growth mediated by optimizing root nutrient uptake ability

Wei Wei; Chen Ye; Hui-Chuan Huang; Min Yang; Xin-Yue Mei; Fei Du; Xia-Hong He; Shu-Sheng Zhu; Yi-Xiang Liu

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자료유형: 학술저널

저자정보: Wei Wei (Yunnan Agricultural University) Chen Ye (Yunnan Agricultural University) Hui-Chuan Huang (Yunnan Agricultural University) Min Yang (Yunnan Agricultural University) Xin-Yue Mei (Yunnan Agricultural University) Fei Du (Yunnan Agricultural University) Xia-Hong He (Yunnan Agricultural University) Shu-Sheng Zhu (Yunnan Agricultural University) Yi-Xiang Liu (Yunnan Agricultural University)

저널정보: 고려인삼학회 Journal of Ginseng Research Journal of Ginseng Research Vol.44 No.4

발행연도: 2020.7

수록면: 627 - 636 (10page)

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Background: Cultivation of medicinal crops, which synthesize hundreds of substances for curative functions, was focused on the synthesis of secondary metabolites rather than biomass accumulation. Nutrition is an important restrict factor for plant growth and secondary metabolites, but little attention has been given to the plasticity of nutrient uptake and secondary metabolites synthesis response to soil nitrogen (N) change.
Methods: Two year-field experiments of Sanqi (Panax notoginseng), which can synthesize a high level of saponin in cells, were conducted to study the effects of N application on the temporal dynamics of biomass, nutrient absorption, root architecture and the relationships between these parameters and saponin synthesis.
Results: Increasing N fertilizer rates could improve the dry matter yields and nutrient absorption ability through increasing the maximum daily growth (or nutrient uptake) rate. Under suitable N level (225 kg/ha N), Sanqi restricted the root length and surface and enhanced the root diameter and N uptake rate per root length (NURI) to promote nutrient absorption, but the opposite status of Sanqi root architecture and NURI was found when soil N was deficient. Furthermore, increasing N rates could promote the accumulation of saponin in roots through improving the NURI, which showed a significant positive relationship with the content of saponin in the taproots.
Conclusion: Appropriate N fertilizer rates could optimize both root architecture and nutrient uptake efficiency, then promote both the accumulation of dry matter and the synthesis of saponins.

#growth dynamics #maximum growth rate #nitrogen #root architecture #saponin synthesis

참고문헌 (47)

참고문헌 신청

Wang T / 2016 / Traditional uses, botany, phytochemistry, pharmacology and toxicology of Panax notoginseng(Burk. )F. H. Chen : a review / J Ethnopharmacol 188:234~258

Yang M / 2015 / Autotoxic ginsenosides in the rhizosphere contribute to the replant failure of Panax notoginseng / PLoS One 10:e0118555

He Y / 2017 / Research progress on triterpenoid saponins in Panax ginseng and its ecological effects / Chinese Tradi Herb Drugs 48:1692~1698

Chung AS / 2016 / Chapter 4. Anticancer and antineurodegenerative effects of ginsenosides / Stud Nat Prod Chem 50

Leung KW / 2010 / Pharmacology of ginsenosides : a literature review / Chin Med 5:20

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