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Journal articles on the topic 'Camptotheca acuminata'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Lineberger, Dan, David Reed, and Mary Rumpho. "Micropropagation of Camptotheca acuminata." HortScience 33, no. 4 (July 1998): 604c—604. http://dx.doi.org/10.21273/hortsci.33.4.604c.

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Camptotheca acuminata (Chinese happy tree, Nyssaceae) is a source of the anticancer phytochemical, camptothecin. An endangered species in its native China, Camptotheca has been grown in this country on an experimental basis, but the germplasm base is extremely narrow. As a prelude to the establishment of a plant improvement effort designed to increase the efficiency of camptothecin production, in vitro studies that will enable plant regeneration and shoot proliferation from selected clones have been undertaken. Shoot proliferating cultures were established from shoot tip explants and were maintained on WPM medium containing 4 μm BA. MS medium and nodal explants proved unsatisfactory. Shoot proliferation was highest when in vitro shoot tips were cultured on 4 μm BA compared to media containing no growth regulator or the cytokinins zeatin, thidiazuron, or kinetin. In vitro—produced shoot tips were rooted by direct sticking in plastic containers filled with RediEarth mix, and were successfully adapted to the greenhouse environment.

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2

Maxwell, Douglas W., and R. Daniel Lineberger. "342 Propagation of Camptotheca acuminata." HortScience 35, no. 3 (June 2000): 451A—451. http://dx.doi.org/10.21273/hortsci.35.3.451a.

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Research was undertaken to optimize seed storage and vegetative propagation of Camptotheca acuminata. Camptotheca is a member of the Nyssaceae native to southern China and is important because it contains the medicinal alkaloid camptothecin. Seeds stored in polyethylene bags in a refrigerator (4 °C) or freezer (- 20 °C) maintained good germination (79% and 83%, respectively), while seeds stored at room temperature in open containers or polyethylene bags lost germination ability quickly (45% and 51%, respectively). Softwood cuttings of Camptotheca rooted readily in intermittent mist (4 s on every 6 min.) in coarse vermiculite when treated with K-IBA (indolebutyric acid, potassium salt) quick dips ranging from 1000 to 9000 ppm, with a 7000 ppm quick dip (5 s) promoting 82% rooting with little foliar damage. Actively growing shoot tip explants were tissue cultured on media containing Murashige and Skoog, Gamborg, and Woody Plant Medium (WPM) salts in factorial combinations with BA (benzyladenine). WPM containing 1.0 mg/lBA promoted excellent shoot proliferation; microcuttings were rooted, acclimated, and grown on in the greenhouse. Camptotheca is readily adaptable to modern nursery techniques for either seed or vegetative propagation.

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3

Liu, Zhijun, and John Adams. "Camptothecin yield and distribution within Camptotheca acuminata trees cultivated in Louisiana." Canadian Journal of Botany 74, no. 3 (March 1, 1996): 360–65. http://dx.doi.org/10.1139/b96-045.

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Camptotheca acuminata plantations were established in southern Louisiana in an effort to provide raw plant materials for deriving camptothecins, compounds having antitumor activity. This study was conducted to evaluate the growth and camptothecin distribution within the trees. It was found that all plant parts contained camptothecins following 1 year of growth in the field. Branches, roots, and stems accumulated significantly higher concentrations of camptothecins than leaves. Bark was significantly higher in camptothecin concentration than wood. Younger and older tissues within a growing season were not significantly different in camptothecin concentrations. High correlation in camptothecin concentration was found between branch and stem, root and stem, and root and branch, whereas little correlation was observed between bark and wood, and leaf and any other plant component. Field-grown C. acuminata has the observed characteristic of multiple current-year branching. The proportion of bark in term of dry weight and dimension decreased as trees increased in diameter. Dried shoots (bulk) contained 0.042% camptothecin, and dried roots (bulk) contained 0.051% camptothecin. Keywords: Camptotheca acuminata, medicinal plants cultivation, camptothecin content, camptothecin distribution, biomass.

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4

Shao, Changmin, Jian Zheng, Bo Fan, Shaman Luo, Jixiang Lin, Tao Yu, Xiufeng Yan, and Yang Wang. "Tissue distribution of 10-methoxycamptothecin and its metabolite 10-hydroxycamptothecin in rats by a RP-HPLC method with fluorescence detection/UV detection." Analytical Methods 7, no. 18 (2015): 7690–96. http://dx.doi.org/10.1039/c5ay01642h.

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5

Liu, Wenzhe, and Uwe M. Reinscheid. "Camptothecin-resistant fungal endophytes of Camptotheca acuminata." Mycological Progress 3, no. 3 (August 2004): 189–92. http://dx.doi.org/10.1007/s11557-006-0088-6.

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6

Li, Zhanhai, and Zhijun Liu. "Camptothecin accumulation in Camptotheca acuminata seedlings in response to acetylsalicylic acid treatment." Canadian Journal of Plant Science 84, no. 3 (July 1, 2004): 885–89. http://dx.doi.org/10.4141/p03-138.

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Camptothecin is an anti-cancer alkaloid. Acetylsalicylic acid (ASA) treatment was evaluated as a potential tool for increasing camptothecin accumulation (concentration and yield) in Camptotheca acuminata. Increasing ASA concentration increased leaf camptothecin concentration, but stunted growth and decreased total leaf camptothecin yield. Thus, ASA treatment does not enhance camptothecin yield. Key words: Hydroponic culture, plant secondary metabolite

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7

Liu, Zhiwen, Qiong Wu, Ya Li, Shi Liu, Lin Li, Qiujun Chen, Yanyan Wang, and Fang Yu. "Effects of exogenous salicylic acid on accumulation of camptothecin and gene expression in Camptotheca acuminata." Canadian Journal of Forest Research 49, no. 1 (January 2019): 104–10. http://dx.doi.org/10.1139/cjfr-2018-0260.

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Camptotheca acuminata Decne (Nyssaceae) is major natural source of camptothecin, an anticancer drug widely used for clinic therapy. Previous works have shown that many plant hormones or elicitors could regulate camptothecin biosynthesis, but few reports have examined sustainable effects of these plant hormones on plants for producing camptothecin. In this work, seedlings obtained from in vitro rapid propagation were used for investigating the sustainable effect of salicylic acid (SA) on transplanted C. acuminata tissues, especially leaves, for camptothecin biosynthesis. Our results indicate that exogenous SA could continuously induce the expression of iridoids pathway genes in C. acuminata leaves for promoting camptothecin production. High expression of iridoids pathway genes still could be observed in bioactive young leaves 180 days after seedlings had been transplanted to soil. In C. acuminata, iridoids pathway genes are expressed at very low levels or are not detectable in old leaves, resulting in decreasing production of camptothecin with leaf development. Interestingly, the expression of these genes could be detected clearly in old leaves of transplanted C. acuminata pretreated with 10 μmol·L–1 of SA during the in vitro rapid propagation phase, which indicates the particular function of SA for a sustainable effect on maintaining relatively high expression levels of iridoids pathway genes for camptothecin biosynthesis.

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8

Nolte, Beth A., R. Daniel Lineberger, David W. Reed, and Mary E. Rumpho*. "Rapid Micro-Assay of Camptothecin in Camptotheca acuminata." Planta Medica 67, no. 4 (2001): 376–78. http://dx.doi.org/10.1055/s-2001-14308.

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9

Li, Zhanhai, and Zhijun Liu. "Camptothecin production in Camptotheca acuminata cultured hydroponically and with nitrogen enrichments." Canadian Journal of Plant Science 85, no. 2 (April 1, 2005): 447–52. http://dx.doi.org/10.4141/p04-020.

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Camptothecin (CPT), produced by Camptotheca acuminata Decaisne (Nyssaceae), is becoming a therapeutically important compound, and the demand for CPT is increasing dramatically. Feasibility of CPT production from C. acuminata in hydroponic culture was studied. As nitrogen (N) is required for the biosynthesis of the alkaloid CPT, CPT production in C. acuminata was studied in response to enrichments of 7.5, 15.0, 22.5, or 30.0 mM N in the culture medium. High concentrations of CPT were found in leaves of plants in hydroponic culture, but the N concentration in the culture medium did not affect tissue CPT concentration, plant weight, plant height, leaf number, lamina dry weight per area, total stem weight, total leaf weight, or total leaf CPT yield (the product of leaf CPT concentration and total leaf dry weight per plant). However, increasing the N concentration in the culture medium reduced leaf length and total root weight. We conclude that C. acuminata CPT production in hydroponic culture is feasible in terms of efficiency for CPT production, and is a potential alternative to culture in the field or in pots, or cell or callus culture, and that a standard low N rate in the culture medium is recommended. Key words: Anti-cancer compound, HPLC, medicinal plant

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10

Lorence, A., F. Medina-Bolivar, and C. L. Nessler. "Camptothecin and 10-hydroxycamptothecin from Camptotheca acuminata hairy roots." Plant Cell Reports 22, no. 6 (January 1, 2004): 437–41. http://dx.doi.org/10.1007/s00299-003-0708-4.

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11

Long-Ze, Lin, Shen Ji-Hui, He Xian, and Zhang Wen-Yi. "Indole alkaloids from camptotheca acuminata." Acta Chimica Sinica 6, no. 3 (August 1988): 257–61. http://dx.doi.org/10.1002/cjoc.19880060312.

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12

Lin, Long-Ze, and Geoffrey A. Cordell. "Quinoline alkaloids from Camptotheca acuminata." Phytochemistry 28, no. 4 (January 1989): 1295–97. http://dx.doi.org/10.1016/0031-9422(89)80242-0.

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13

Krishnakumar, G., K. P. Dintu, Sibi C. Varghese, Deepthi S. Nair, Geethu Gopinath, K. B. Rameshkumar, K. Satheeshkumar, and P. N. Krishnan. "Ophiorrhiza, a promising herbaceous source of the anticancer compound camptothecin." Plant Science Today 7, no. 2 (May 2, 2020): 240. http://dx.doi.org/10.14719/pst.2020.7.2.660.

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Camptothecin is an important source for the synthesis of some of the major anti-cancer agents such as irinotecan and topotecan. Traditional source of camptothecin are prominently woody plants such as Camptotheca acuminata Decne. and Nothopodytes nimmoniana (Graham) Mabb., and the increasing demand for camptothecin leads to the level of threatening their existence. Ophiorrhiza species composed of herbaceous plants with quick growth characteristics which are reported as alternative source of camptothecin. The present review focus on taxonomical status, traditional uses, biological activities and phytochemical constituents with a special attention in bioproduction of camptothecin from Ophiorrhiza species and its future prospects.

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14

Nacheva, Lilyana, Nataliya Dimitrova, Valeria Ivanova, Fuliang Cao, and Zunling Zhu. "Micropropagation of Camptotheca Acuminata Decne (Nyssaceae) – Endangered Ornamental and Medicinal Tree." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 68, no. 4 (2020): 679–86. http://dx.doi.org/10.11118/actaun202068040679.

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Camptotheca acuminata Decne (Nyssaceae) (happy tree, tree of life, cancer tree) is a rapidly growing deciduous and endangered tree endemic to east Tibet and southern China (Liu et al., 2002). C. acuminata is an ornamental tree with monopodial growth, beautiful leaves and shade- and cold- tolerant in their natural environment. Recently, its demand has grown rapidly due to secondary metabolites production like Camptothecin and its derivatives with anti cancer and antivirus activity. The aim of the present study was to develop an efficient protocol for in vitro micropropagation of this valuable plant. Different cultural media based on both MS (Murashige and Skoog, 1962) or DKW (Driver and Kuniyuki, 1984) formulations with different cytokinins (6-benzylaminopurine, BAP or 2-isopentenyladenine, 2iP or meta-topolin, mT) have been involved. The aromatic cytokinin meta-topolin stimulated plant growth. The optimum multiplication rate of Camptotheca shoots occurred on the DKW basal medium, supplemented with 2.5 µM meta-topolin, grown under mixed LED light. The highest number of roots per plantlets was recorded on the rooting medium with 0.3 mgl-1 NAA.

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15

and, Zhanhai Li, and Zhijun Liu. "Effect of NaCl on growth, morphology, and camptothecin accumulation in Camptotheca acuminata seedlings." Canadian Journal of Plant Science 83, no. 4 (October 1, 2003): 931–38. http://dx.doi.org/10.4141/p03-023.

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NaCl salt is shown to increase alkaloid accumulation in some plant species, but creates an extensive problem in plant cultivation. The effect of NaCl on Camptotheca acuminata Decaisne growth, morphology, and camptothecin accumulation (concentration and yield) was studied in a hydroponic culture system. High NaCl levels (above 75 mM) in growth media significantly reduced plant height, weight, leaf number, and leaf length but increased leaf weight. In contrast, low NaCl levels (below 75 mM) only moderately reduced growth and affected morphology. Our results suggest a concentration of 75 mM is the threshold for NaCl to exert a detrimental effect on C. acuminata seedlings. Furthermore, high NaCl levels (above 75 mM) increased camptothecin concentrations both in leaves and roots, whereas low NaCl levels (below 75 mM) had no effect on camptothecin concentrations. However, total leaf camptothecin yield, the product of leaf camptothecin concentration and total leaf dry weight per seedling, decreased with increasing NaCl concentration. There was a negative relationship between plant growth and camptothecin concentration. Our results suggest that high NaCl salinity increases camptothecin concentration, but is not helpful to achieve a high camptothecin yield. Therefore, a salty growth environment should be avoided for camptothecin production. Key words: Alkaloid, anti-cancer plant, HPLC, plant secondary metabolism

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16

Lin, Long-Ze, and Geoffrey A. Cordell. "19-O-Methylangustoline from Camptotheca acuminata." Phytochemistry 29, no. 8 (January 1990): 2744–46. http://dx.doi.org/10.1016/0031-9422(90)85239-c.

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17

Liu, Zhijun, Stanley B. Carpenter, and Roysell J. Constantin. "Camptothecin production in Camptotheca acuminata seedlings in response to shading and flooding." Canadian Journal of Botany 75, no. 2 (February 1, 1997): 368–73. http://dx.doi.org/10.1139/b97-039.

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One-year-old Camptotheca acuminata seedlings were grown under heavy shade (27% full sunlight), slight shade (67% full sunlight), or full sunlight for 2 weeks, then subjected to flooding for 4 weeks under continued shading schemes. Growth, chlorophyll fluorescence, and camptothecin concentrations were determined. Flooding led to significant decreases in leaf biomass, while shading significantly increased stem biomass. Under full sunlight or slight shade conditions, lateral root biomass was significantly decreased by flooding, whereas under heavy shade, it was not significantly reduced by flooding. Shaded leaves displayed significantly higher chlorophyll fluorescence than the non-shaded leaves throughout the 6-week period. Onset of flooding caused immediate decline of chlorophyll fluorescence of nonshaded and slight-shaded seedlings, but the effect of flooding quickly diminished. Heavy shade led to elevated camptothecin concentrations in leaves, whereas flooding had no effect. Camptothecin concentrations in stems were not altered by either flooding or shading; however, they were substantially lowered in lateral roots under heavy shade compared with those grown in full sunlight. Flooding induced an additional camptothecin accumulation in lateral roots under slight shade, but it failed to do so under either heavy shade or full sunlight conditions. Key words: anti-tumor compounds, camptothecin, chlorophyll fluorescence, flooding, secondary metabolites, shading.

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18

Liu, Zhijun. "Drought-induced in vivo synthesis of camptothecin in Camptotheca acuminata seedlings." Physiologia Plantarum 110, no. 4 (December 2000): 483–88. http://dx.doi.org/10.1111/j.1399-3054.2000.1100409.x.

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19

Jing, Li-jia, Si-yang Li, Zui Chang, Yang Wang, and Xiu-feng Yan. "Optimization of ultrasound-assisted extraction of camptothecin from Camptotheca acuminata seeds." Journal of Forestry Research 22, no. 2 (May 3, 2011): 239–42. http://dx.doi.org/10.1007/s11676-011-0156-x.

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20

Wang, Hui-mei, and Yuan-gang Zu. "Agrobacterium-mediated genetic transformation of Camptotheca acuminata." Journal of Forestry Research 18, no. 4 (December 2007): 316–18. http://dx.doi.org/10.1007/s11676-007-0064-2.

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21

Monacelli, Barbara, Alessio Valletta, Nicoletta Rascio, Isabella Moro, and Gabriella Pasqua. "Laticifers in Camptotheca acuminata Decne: distribution and structure." Protoplasma 226, no. 3-4 (December 2005): 155–61. http://dx.doi.org/10.1007/s00709-005-0118-2.

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22

Li, Zhanhai, and Zhijun Liu. "Plant regeneration from leaf petioles in Camptotheca acuminata." In Vitro Cellular & Developmental Biology - Plant 41, no. 3 (May 2005): 262–65. http://dx.doi.org/10.1079/ivp2004631.

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23

Wang, H. M., Y. G. Zu, W. J. Wang, S. X. Wu, and F. L. Dong. "Establishment of Camptotheca acuminata regeneration from leaf explants." Biologia plantarum 50, no. 4 (December 1, 2006): 725–28. http://dx.doi.org/10.1007/s10535-006-0116-z.

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24

Yu, Jing Hua, Shu Sheng Yuan, Zhong Hua Tang, De Wen Li, and Yuan Gang Zu. "Proteomics Response and Acclimation of Camptotheca acuminata Seedlings to Water Deficit." Advanced Materials Research 518-523 (May 2012): 460–64. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.460.

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Proteomics responses and adaptations of Camptotheca acuminata seedlings to drought conditions stimulated by treatment with PEG8000 simulation were investigated. We determined the drought responses of seedlings after 30min, 3 h, and 5 h of treatment with15% PEG8000 . The following 2-DE and PMF identification analysis showed that there are many kinds of proteins involved in the regulation of plants responses to environmental drought. Heat shock protein (HSP) and Late embryo abundant protein (LEA) were discovered to take part in the response of C. acuminata to drought environment. Rubisco LSU was found to help C. acuminata to adapt this arid environment in the way of degradation.

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25

van Hengel, Arjon J., Marien P. Harkes, Harry J. Wichers, Paul G. M. Hesselink, and Reinetta M. Buitelaar. "Characterization of callus formation and camptothecin production by cell lines of Camptotheca acuminata." Plant Cell, Tissue and Organ Culture 28, no. 1 (January 1992): 11–18. http://dx.doi.org/10.1007/bf00039910.

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26

Zhang, Yuhua, Keming Jiang, Degang Qing, Bing Huang, Jiayi Jiang, Shumei Wang, and Chunyan Yan. "Accumulation of camptothecin and 10-hydroxycamptothecin and the transcriptional expression of camptothecin biosynthetic genes in Camptotheca acuminata cambial meristematic and dedifferentiated cells." RSC Advances 7, no. 20 (2017): 12185–93. http://dx.doi.org/10.1039/c7ra00588a.

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Cambial meristematic cells (CMCs) of C. acuminata were isolated and compared with dedifferentiated cells (DDCs). The expression levels of seven genes encoding key enzymes involved in CPT and HCPT biosynthesis was significantly upregulated in CMCs compared with DDCs.

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27

Yang, Qin, Xin-lei Fan, Zhuo Du, Ying-mei Liang, and Cheng-ming Tian. "Diaporthe camptothecicola sp. nov. on Camptotheca acuminata in China." Mycotaxon 132, no. 3 (October 2, 2017): 591–601. http://dx.doi.org/10.5248/132.591.

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28

Rao, Sen, Yanyou Wu, and Rui Wang. "Bicarbonate stimulates non‐structural carbohydrate pools of Camptotheca acuminata." Physiologia Plantarum 165, no. 4 (August 6, 2018): 780–89. http://dx.doi.org/10.1111/ppl.12785.

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29

Wang, Weiwei, Hang Liu, Qi He, WenLu Yang, Zeyuan Chen, Mingcheng Wang, Yutao Su, and Tao Ma. "Characterization of the complete chloroplast genome of Camptotheca acuminata." Conservation Genetics Resources 9, no. 2 (December 31, 2016): 241–43. http://dx.doi.org/10.1007/s12686-016-0662-4.

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30

Kang, Dali, Hongli Zhang, Qingqian Zeng, Xiaolu Mo, Yusheng Wang, and Depo Yang. "Response of Camptotheca acuminata calli stimulated by mechanical vibration." Acta Physiologiae Plantarum 33, no. 3 (September 16, 2010): 711–16. http://dx.doi.org/10.1007/s11738-010-0595-6.

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31

Ding, Xiaowei, Kaihui Liu, Baiwan Deng, Wenqiang Chen, Wenjun Li, and Feihu Liu. "Isolation and characterization of endophytic fungi from Camptotheca acuminata." World Journal of Microbiology and Biotechnology 29, no. 10 (April 12, 2013): 1831–38. http://dx.doi.org/10.1007/s11274-013-1345-x.

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32

Jain, Ashok K., and Craig L. Nessler. "Clonal propagation of Camptotheca acuminata through shoot bud culture." Plant Cell, Tissue and Organ Culture 44, no. 3 (March 1996): 229–33. http://dx.doi.org/10.1007/bf00048528.

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33

Qiu, Dunlian, Benhong Liu, Ya Tang, and Zhirong Yang. "Camptotheca acuminata Decne residue after camptothecin extract as a substrate to produce mushroom spawn." Journal of Mountain Science 9, no. 6 (December 2012): 835–41. http://dx.doi.org/10.1007/s11629-012-2553-9.

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34

Wang, Peng, Jun Luo, Xiao-Bing Wang, Bo-Yi Fan, and Ling-Yi Kong. "New indole glucosides as biosynthetic intermediates of camptothecin from the fruits of Camptotheca acuminata." Fitoterapia 103 (June 2015): 1–8. http://dx.doi.org/10.1016/j.fitote.2015.03.004.

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35

Wang, Ting, Pengfei Li, Yao Sun, Xiaomei Song, Hao Li, Liting Qin, Juying Zhou, Qin Huang, and Fuhou Lei. "Camptothecin-imprinted polymer microspheres with rosin-based cross-linker for separation of camptothecin from Camptotheca acuminata fruit." Separation and Purification Technology 234 (March 2020): 116085. http://dx.doi.org/10.1016/j.seppur.2019.116085.

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36

Li, Qin, and Chi Zhang. "A Study of Antioxidant Activity about Extracts with Different Solvents from Four Chinese Herbal Medicines in Enshi." Advanced Materials Research 396-398 (November 2011): 221–24. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.221.

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this paper, four kinds of Chinese herbal medicines from Enshi：Camptotheca acuminata, Paris polyphylla Smith, Taxus mairei and Trillium tschonoskii Maxim were respectively extracted by double distilled water, 0.5mol/LNaCl solution, and 75%(v/v) ethanol,using pyrogallol autoxidation method to test the antioxidant activity. The results showed that four kinds of Chinese herbal medicines have certain ability to remove superoxide anion radical and different among them, The ethanol extract of Camptotheca acuminata and water extract of Trillium tschonoskii Maxim have the strongest antioxidant capacity,however all of the salt extract of four Chinese herbal medicines which can hardly remove superoxide anion radical have little antioxidant capacity.

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37

Li, Chunying, Yukun Zhang, Chunjian Zhao, Yujiao Ni, Kaiting Wang, Jingjing Zhang, and Wenyan Zhao. "Ultrasonic Assisted-Reflux Synergistic Extraction of Camptothecin and Betulinic Acid from Camptotheca acuminata Decne. Fruits." Molecules 22, no. 7 (June 27, 2017): 1076. http://dx.doi.org/10.3390/molecules22071076.

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38

Carte, Brad K., Charles DeBrosse, Drake Eggleston, Mark Hemling, Mary Mentzer, Benjamin Poehland, Nelson Troupe, John W. Westley, and Sidney M. Hecht. "Isolation and characterization of a presumed biosynthetic precursor of camptothecin from extracts of Camptotheca acuminata." Tetrahedron 46, no. 8 (January 1990): 2747–60. http://dx.doi.org/10.1016/s0040-4020(01)88369-1.

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39

Sadre, Radin, Maria Magallanes-Lundback, Sujana Pradhan, Vonny Salim, Alex Mesberg, A. Daniel Jones, and Dean DellaPenna. "Metabolite Diversity in Alkaloid Biosynthesis: A Multilane (Diastereomer) Highway for Camptothecin Synthesis in Camptotheca acuminata." Plant Cell 28, no. 8 (July 18, 2016): 1926–44. http://dx.doi.org/10.1105/tpc.16.00193.

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40

Liu, Yang, Lili Song, Weiwu Yu, Yuanyuan Hu, Xiaohua Ma, Jiasheng Wu, and Yeqing Ying. "Light quality modifies camptothecin production and gene expression of biosynthesis in Camptotheca acuminata Decne seedlings." Industrial Crops and Products 66 (April 2015): 137–43. http://dx.doi.org/10.1016/j.indcrop.2014.12.046.

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41

Pu, Xiang, Fei Chen, Yun Yang, Xixing Qu, Guolin Zhang, and Yinggang Luo. "Isolation and characterization of Paenibacillus polymyxa LY214, a camptothecin-producing endophytic bacterium from Camptotheca acuminata." Journal of Industrial Microbiology & Biotechnology 42, no. 8 (June 28, 2015): 1197–202. http://dx.doi.org/10.1007/s10295-015-1643-4.

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42

Sankar-Thomas, Yantree Devi, and Reinhard Lieberei. "Camptothecin accumulation in various organ cultures of Camptotheca acuminata Decne grown in different culture systems." Plant Cell, Tissue and Organ Culture (PCTOC) 106, no. 3 (March 23, 2011): 445–54. http://dx.doi.org/10.1007/s11240-011-9942-6.

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43

Pan, Xue-Wu, Ya-Ya Shi, Xin Liu, Xiang Gao, and Ying-Tang Lu. "Influence of inorganic microelements on the production of camptothecin with suspension cultures of Camptotheca acuminata." Plant Growth Regulation 44, no. 1 (September 2004): 59–63. http://dx.doi.org/10.1007/s10725-004-1654-z.

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44

Ding, T., T. Jiang, J. Zhou, L. Xu, and Z. M. Gao. "Evaluation of antimicrobial activity of endophytic fungi from Camptotheca acuminata." Genetics and Molecular Research 9, no. 4 (2010): 2111–19. http://dx.doi.org/10.4238/vol9-4gmr809.

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Zhu, Wen-Yong, Jin-Li Zhang, Yu-Li Qin, Zi-Jun Xiong, Dao-Feng Zhang, Hans-Peter Klenk, Li-Xing Zhao, Li-Hua Xu, and Wen-Jun Li. "Blastococcus endophyticus sp. nov., an actinobacterium isolated from Camptotheca acuminata." International Journal of Systematic and Evolutionary Microbiology 63, Pt_9 (September 1, 2013): 3269–73. http://dx.doi.org/10.1099/ijs.0.049239-0.

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A novel endophytic actinobacterium, designated strain YIM 68236T, was isolated from healthy leaves of Camptotheca acuminata. and characterized by using a polyphasic approach. Cells of this strain occurred singly, in pairs or in tetrads. It grew at 10–45 °C, at pH 5.0–8.0 (optimum pH 7.0) and in the presence of 0–3 % (w/v) NaCl. The DNA G+C content was 71.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YIM 68236T belongs to the genus Blastococcus . However, it differed from its closest relatives, Blastococcus aggregatus DSM 4725T, Blastococcus saxobsidens DSM 44509T and Blastococcus jejuensis DSM 19597T in many phenotypic characteristics. Moreover, the DNA–DNA relatedness values between the novel isolate and the three above-mentioned type strains were 49.0±1.6 %, 46.1±3.2 % and 39.8±1.5 %, respectively. Based on comparative analysis of physiological and chemotaxonomic data, strain YIM 68236T represents a novel species of the genus Blastococcus , for which the name Blastococcus endophyticus sp. nov. is proposed. The type strain is YIM 68236T ( = CCTCC AA 209045T = DSM 45413T = KCTC 19998T).

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Li, Guo-Qiang, Neng-Hua Chen, Yu-Bo Zhang, Pan Li, Xiao-Jun Huang, Ren-Wang Jiang, Guo-Cai Wang, and Yao-Lan Li. "Six New Pentacyclic Triterpenoids from the Fruit of Camptotheca acuminata." Chemistry & Biodiversity 14, no. 1 (December 27, 2016): e1600180. http://dx.doi.org/10.1002/cbdv.201600180.

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Jin, Zhaoxiao, Tongshuai Yan, Chunhao Chang, Zhiwen Liu, Yanyan Wang, Zhonghua Tang, and Fang Yu. "Application of virus-induced gene silencing approach in Camptotheca acuminata." Plant Cell, Tissue and Organ Culture (PCTOC) 126, no. 3 (June 22, 2016): 533–40. http://dx.doi.org/10.1007/s11240-016-1022-5.

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Amin, Sk Abdul, Nilanjan Adhikari, Tarun Jha, and Shovanlal Gayen. "A Review on Camptothecin Analogs with Promising Cytotoxic Profile." Anti-Cancer Agents in Medicinal Chemistry 18, no. 13 (February 14, 2019): 1796–814. http://dx.doi.org/10.2174/1871520618666180327140956.

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Camptothecin (CPT), obtained from Camptotheca acuminata (Nyssaceae), is a quinoline type of alkaloid. Apart from various traditional uses, it is mainly used as a potential cytotoxic agent acting against a variety of cancer cell lines. Though searches have been continued for last six decades, still it is a demanding task to design potent and cytotoxic CPTs. Different CPT analogs are synthesized to enhance the cytotoxic potential as well as to increase the pharmacokinetic properties of these analogs. Some of these analogs were proven to be clinically effective in different cancer cell lines. In this article, different CPT analogs have been highlighted extensively to get a detail insight about the structure-property relationships as well as different quantitative structure-activity relationships (QSARs) modeling of these analogs are also discussed. This study may be beneficial for designing newer CPT analogs in future.

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Yu, Jing Hua, Shu Sheng Yuan, Zhong Hua Tang, De Wen Li, and Yuan Gang Zu. "Degradation and Ecological Functions of RubiscoLSU during Severe Drought Stress Leaves of Camptotheca acuminata." Advanced Materials Research 518-523 (May 2012): 5429–35. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.5429.

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Cultivated C. acuminata was distributed widely in arid area belonging to middle part of China where plant medicinal material industrials were highly developed due to limited wild resources. It was showed that drought situation could result in rapid decrease of leaf RWC lower than 50% after 6 hours of treatment and exerted adverse effects on growth and development of C. acuminata seedlings. In this paper, proteomics was used to investigate protein changes and their ecological adaptation to desiccation with the treatment of 15% PEG8000 solute to one-year C. acuminata seedlings. 2-DE was adopted to reflect total protein changes after 0 and 30 min, 3h and 5h of treatment and the different expressing blots was identified using PMF attempting to demonstrate damage mechanism of desiccation to plants and ecologically adapting. The results showed that the degradation of Rubisco large subunit (Rubisco LSU) occurred and HSP70 was implicated in the modulation process within 5 h treatment.

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Liu, Z., S. B. Carpenter, W. J. Bourgeois, Y. Yu, R. J. Constantin, M. J. Falcon, and J. C. Adams. "Variations in the secondary metabolite camptothecin in relation to tissue age and season in Camptotheca acuminata." Tree Physiology 18, no. 4 (April 1, 1998): 265–70. http://dx.doi.org/10.1093/treephys/18.4.265.

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