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Wu ZY, Meng XF, Jiao YS, Guo BL, Sui XH, Ma SJ, Chen WF, Singh RP. Bradyrhizobium arachidis mediated enhancement of (oxy)matrine content in the medicinal legume Sophora flavescens. Lett Appl Microbiol 2021; 72:570-577. [PMID: 33474743 DOI: 10.1111/lam.13453] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/17/2021] [Accepted: 01/17/2021] [Indexed: 12/30/2022]
Abstract
Effect of rhizobial inoculation and nitrate application on the content of bioactive compounds in legume plants is an interesting aspect for interactions among microbes, plants and chemical fertilizers, as well as for cultivated practice of legumes. In this study, nitrate (0, 5 and 20 mmol l-1 ) and Bradyrhizobium arachidis strain CCBAU 051107T were applied, individually or in combination, to the root rhizosphere of the medicinal legume Sophora flavescens Aiton (SFA). Then the plant growth, nodulation and active ingredients including (oxy)matrine of SFA were determined and compared. Rhizobial inoculation alone significantly increased the numbers and fresh weight of root nodules. Nodulation was significantly inhibited due to nitrate (5 and 20 mmol l-1 ). Only oxymatrine was detected in the control plants without rhizobial inoculation and nitrate supplement, while both oxymatrine and matrine were synthesized in plants treated with inoculation of B. arachidis or supplied with nitrate. The content of oxymatrine was the highest in plants inoculated solely with rhizobia and was not significantly altered by additional application of nitrate. Combinations of B. arachidis inoculation and different concentrations of nitrate did not significantly change the concentrations of (oxy)matrine in the plant. In conclusion, sole rhizobial inoculation was the best approach to increase the contents of key active ingredients oxymatrine and matrine in the medicinal legume SFA.
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Affiliation(s)
- Z Y Wu
- State Key Laboratory of Agrobiotechnology, Beijing, China.,College of Biological Sciences and Rhizobium Research Center, China Agricultural University, Beijing, China
| | - X F Meng
- State Key Laboratory of Agrobiotechnology, Beijing, China.,College of Biological Sciences and Rhizobium Research Center, China Agricultural University, Beijing, China
| | - Y S Jiao
- State Key Laboratory of Agrobiotechnology, Beijing, China.,College of Biological Sciences and Rhizobium Research Center, China Agricultural University, Beijing, China
| | - B L Guo
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - X H Sui
- State Key Laboratory of Agrobiotechnology, Beijing, China.,College of Biological Sciences and Rhizobium Research Center, China Agricultural University, Beijing, China
| | - S J Ma
- College of Food Science and Pharmacy, Xinjiang Agricultural University, Urumqi, China
| | - W F Chen
- State Key Laboratory of Agrobiotechnology, Beijing, China.,College of Biological Sciences and Rhizobium Research Center, China Agricultural University, Beijing, China
| | - R P Singh
- Department of Research and Development, Biotechnology, Uttaranchal University, Dehradun, Uttarakhand, India
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Chun JH, Kim NH, Seo MS, Jin M, Park SU, Arasu MV, Kim SJ, Al-Dhabi NA. Molecular characterization of glucosinolates and carotenoid biosynthetic genes in Chinese cabbage ( Brassica rapa L. ssp. pekinensis). Saudi J Biol Sci 2016; 25:71-82. [PMID: 29379360 PMCID: PMC5775089 DOI: 10.1016/j.sjbs.2016.04.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 04/06/2016] [Accepted: 04/08/2016] [Indexed: 11/26/2022] Open
Abstract
The present study aimed to investigate the contents of glucosinolates (GSLs) and carotenoids in eleven varieties of Chinese cabbage in relation to the expression level of the important transcription factors. MS and HPLC analysis identified the presence of 13 GSLs (progoitrin, sinigrin, glucoalyssin, gluconapoleiferin, gluconapin, glucocochlearin, glucobrassicanapin, glucoerucin, 4-hydroxyglucobrassicin, glucobrassicin, 4-methoxyglucobrassicin, neoglucobrassicin and gluconasturtiin) and four carotenoids (lutein, zeaxanthin, α-carotene and β-carotene). GSL contents were varied among the different cabbage varieties. The total GSL content ranged from 2.7 to 57.88 μmol/g DW. The proportion of gluconapin (54%) and glucobrassicanapin (22%) was higher in all the varieties, respectively. Results documented the variation in total and individual carotenoid contents that have also been observed among different varieties; however, the total carotenoid contents ranged from 289.12 to 1001.41 mg kg−1 DW (mean 467.66). Interestingly, the proportion of lutein (66.5) and β-carotene (25.9) were higher than α-carotene (5.1) and zeaxanthin (2.5%). Consequently, the expression level of the regulatory gene, MYB28 was higher in ‘K0648’ and was directly proportional to GSL content. Similarly, the expression levels of 1-PSY were higher in ‘K0112’; however, the expression levels of 2-ZDS, 3-LCYB, 4-LCYE, 5-CHXB and 7-NCED genes showed no significant difference. In addition, the correlation between GSL and carotenoid contents and gene expression level showed moderate significant difference in each Chinese cabbage.
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Affiliation(s)
- Jin-Hyuk Chun
- Department of Bio-Environmental Chemistry, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Daejeon 34134, Republic of Korea
| | - Na-Hyung Kim
- Food and Drug Research Institute, Uiduk University, 261 Donghaedaero, Gyeongju 38004, Republic of Korea
| | - Mi-Suk Seo
- Department of Agricultural Biotechnology, National Academy of Agricultural Science, Rural Development Administration, 235 Geumpyeong-ri, Iseo-myeon, Jeonju 55365, Republic of Korea
| | - Mina Jin
- Department of Agricultural Biotechnology, National Academy of Agricultural Science, Rural Development Administration, 235 Geumpyeong-ri, Iseo-myeon, Jeonju 55365, Republic of Korea
| | - Sang Un Park
- Department of Crop Science, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Daejeon 34134, Republic of Korea
| | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Sun-Ju Kim
- Department of Bio-Environmental Chemistry, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Daejeon 34134, Republic of Korea
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
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