| Nutrient absorption of Sinopodophyllum Hexandrum and its relationship with the accumulation of medicinal components |
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| DOI：10.7606/j.issn.1000-7601.2025.05.11 |
| Key Words: sinopodophyllum hexandrum nutrient elements nutrient absorption pattern medicinal components accumulation harvest period |
| Author Name | Affiliation | | XU Xiaojuan | College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China | | MAO Jie | College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China | | DUAN Ying | College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China | | JIU Xijia | College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China | | DU Tao | College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China | | CHEN Honggang | College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China | | GAO Sufang | College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China | | WANG Huizhen | College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China | | ZENG Cuiyun | College of Pharmacy, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, China |
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| Abstract: |
| The changes of agronomic traits, dry matter accumulation, nutrient elements, and medicinal components of Sinopodophyllum hexandrum were studied to clarify the nutrient absorption law of S. hexandrum and its relationship with the accumulation of medicinal components. Taking 3\|year\|old S. hexandrum as the research object, the agronomic traits, dry matter accumulation, nutrient elements, and four kinds of medicinal components in roots were determined at different growth stages. The results showed that, (1) The agronomic traits of S. hexandrum showed an increasing trend with the growth period, and the dry matter accumulation showed a ‘slow\|fast\|slow’ rule with the growth period. (2) The demand for nitrogen and potassium fertilizer was large during the growth period, and the accumulation of 11 nutrient elements was in the order of nitrogen > potassium > calcium > phosphorus > magnesium > iron > sulfur > manganese > boron > zinc > copper. The accumulation of nitrogen, phosphorus, and potassium in the aboveground and underground parts reached a high level at 150 days after emergence. (3) The changes of podophyllotoxin, quercetin, and kaempferol accumulation in roots were basically the same, showing a trend of increasing first, then leveling off, and then increasing. The accumulation of 4′-demethylpodophyllotoxin increased first and then stabilized. The accumulation of the above four kinds of pharmacodynamic components reached the maximum value (P<0.05), which was 130.79, 3.16, 4.37 mg, and 4.30 mg per plant, respectively. (4) Nitrogen, phosphorus, potassium, and boron promoted the accumulation of effective components. Nitrogen, potassium, and boron were significantly positively correlated with quercetin content (P<0.05). Phosphorus was significantly positively correlated with quercetin and kaempferol content (P<0.01). Nitrogen was significantly positively correlated with kaempferol content (P<0.05). Potassium and boron were significantly positively correlated with podophyllotoxin content (P<0.05). Boron was significantly positively correlated with 4′-demethylpodophyllotoxin content(P<0.05). Calcium and iron inhibit the accumulation of medicinal ingredients. Calcium was significantly negatively correlated with 4′-demethylpodophyllotoxin content (P<0.01) and podophyllotoxin content (P<0.05). Iron was significantly negatively correlated with podophyllotoxin, quercetin, and kaempferol content (P<0.05). In summary, the uptake activities of pectin calcium and the vigorous growth period (90~150 d) of S. hexandrum are the most critical period for dry matter accumulation and nutrient accumulation. The order of absorbing macro elements is nitrogen, potassium, and phosphorus, and boron is also a key trace element affecting quality. It is suggested that macro elements should be applied in the vigorous growth period, and boron should be applied in the leaf\|increasing period (30d~90 d). The content of medicinal components reached its maximum value during the withering dormancy period, so the optimal harvest period is from late September to mid\|October. |
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