Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in <i>Salvia miltiorrhiza</i>
<i>Salvia miltiorrhiza</i> Bunge is a traditional medicinal plant in China and poly-glutamic acid (PGA) is a valuable biopolymer. However, it is unclear whether PGA promotes growth and the accumulation of main medicinal components in <i>S. miltiorrhiza</i>. To elucidate this...
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| Format: | Article |
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MDPI AG
2024-01-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/14/2/252 |
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| author | Changjuan Shan Xiaoqing Zhang Yi Luo Dongfeng Yang |
| author_facet | Changjuan Shan Xiaoqing Zhang Yi Luo Dongfeng Yang |
| author_sort | Changjuan Shan |
| collection | DOAJ |
| description | <i>Salvia miltiorrhiza</i> Bunge is a traditional medicinal plant in China and poly-glutamic acid (PGA) is a valuable biopolymer. However, it is unclear whether PGA promotes growth and the accumulation of main medicinal components in <i>S. miltiorrhiza</i>. To elucidate this scientific question, the influences of PGA on the growth, physiological characteristics, and accumulation of main medicinal components in <i>S. miltiorrhiza</i> were explored through a pot experiment. The results revealed that PGA significantly promoted basal diameter, plant height, shoot and root biomass, as well as root volume, compared with control. PGA also increased SPAD value, net photosynthetic rate, actual and maximum photochemical efficiency of photosynthetic system II, photochemical quenching, and electronic transfer rate. Meanwhile, PGA increased transpiration rate, stomatal conductance, water use efficiency, leaf relative water content, and the contents of soluble protein, soluble sugar, and proline. Furthermore, PGA increased the activities of antioxidant enzymes and the contents of antioxidants. The above findings imply that PGA facilitated <i>S. miltiorrhiza</i> growth by enhancing photosynthetic performance, water metabolism, and antioxidant capacity. Additionally, PGA significantly improved the yield of rosmarinic acid, salvianolic acid B, dihydrotanshinone, cryptotanshinone, tanshinone I, and tanshinone ⅡA in roots by up-regulating the transcript levels of genes responsible for their biosynthesis. Our findings indicated that PGA promoted <i>S. miltiorrhiza</i> growth and the accumulation of main medicinal components in roots. |
| first_indexed | 2024-03-07T22:46:44Z |
| format | Article |
| id | doaj.art-9780c69909c6498c82f3c70e62428fc7 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-07T22:46:44Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-9780c69909c6498c82f3c70e62428fc72024-02-23T15:03:59ZengMDPI AGAgronomy2073-43952024-01-0114225210.3390/agronomy14020252Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in <i>Salvia miltiorrhiza</i>Changjuan Shan0Xiaoqing Zhang1Yi Luo2Dongfeng Yang3School of Life Science, Henan Institute of Science and Technology, Xinxiang 453003, ChinaSchool of Life Science, Henan Institute of Science and Technology, Xinxiang 453003, ChinaSchool of Life Science, Henan Institute of Science and Technology, Xinxiang 453003, ChinaCollege of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China<i>Salvia miltiorrhiza</i> Bunge is a traditional medicinal plant in China and poly-glutamic acid (PGA) is a valuable biopolymer. However, it is unclear whether PGA promotes growth and the accumulation of main medicinal components in <i>S. miltiorrhiza</i>. To elucidate this scientific question, the influences of PGA on the growth, physiological characteristics, and accumulation of main medicinal components in <i>S. miltiorrhiza</i> were explored through a pot experiment. The results revealed that PGA significantly promoted basal diameter, plant height, shoot and root biomass, as well as root volume, compared with control. PGA also increased SPAD value, net photosynthetic rate, actual and maximum photochemical efficiency of photosynthetic system II, photochemical quenching, and electronic transfer rate. Meanwhile, PGA increased transpiration rate, stomatal conductance, water use efficiency, leaf relative water content, and the contents of soluble protein, soluble sugar, and proline. Furthermore, PGA increased the activities of antioxidant enzymes and the contents of antioxidants. The above findings imply that PGA facilitated <i>S. miltiorrhiza</i> growth by enhancing photosynthetic performance, water metabolism, and antioxidant capacity. Additionally, PGA significantly improved the yield of rosmarinic acid, salvianolic acid B, dihydrotanshinone, cryptotanshinone, tanshinone I, and tanshinone ⅡA in roots by up-regulating the transcript levels of genes responsible for their biosynthesis. Our findings indicated that PGA promoted <i>S. miltiorrhiza</i> growth and the accumulation of main medicinal components in roots.https://www.mdpi.com/2073-4395/14/2/252growthantioxidant capacityphotosynthetic performancetranscript levelmedicinal component |
| spellingShingle | Changjuan Shan Xiaoqing Zhang Yi Luo Dongfeng Yang Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in <i>Salvia miltiorrhiza</i> Agronomy growth antioxidant capacity photosynthetic performance transcript level medicinal component |
| title | Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in <i>Salvia miltiorrhiza</i> |
| title_full | Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in <i>Salvia miltiorrhiza</i> |
| title_fullStr | Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in <i>Salvia miltiorrhiza</i> |
| title_full_unstemmed | Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in <i>Salvia miltiorrhiza</i> |
| title_short | Poly-Glutamic Acid Promotes the Growth and the Accumulation of Main Medicinal Components in <i>Salvia miltiorrhiza</i> |
| title_sort | poly glutamic acid promotes the growth and the accumulation of main medicinal components in i salvia miltiorrhiza i |
| topic | growth antioxidant capacity photosynthetic performance transcript level medicinal component |
| url | https://www.mdpi.com/2073-4395/14/2/252 |
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