dracaena cambodiana
Recently Published Documents


TOTAL DOCUMENTS

38
(FIVE YEARS 6)

H-INDEX

9
(FIVE YEARS 1)

Trees ◽  
2022 ◽  
Author(s):  
Feng Zheng ◽  
Yuping Xiong ◽  
Kunlin Wu ◽  
Jaime A. Teixeira da Silva ◽  
Songjun Zeng ◽  
...  

2021 ◽  
pp. 1-6
Author(s):  
Hongyou Zhao ◽  
Shuang Li ◽  
Chunyong Yang ◽  
Ge Li ◽  
Yanfang Wang ◽  
...  

The genus <i>Dracaena</i> is the main source of dragon’s blood, which is a plant resin and has been used as traditional medicine since ancient times in different civilizations. However, the chromosome numbers and karyotypes present in this genus remain poorly understood. In this study, fluorescence in situ hybridization (FISH) using oligonucleotide probes for ribosomal DNAs (5S and 45S rDNA) and telomeric repeats (TTTAGGG)<sub>3</sub> was applied to analyze 4 related species: <i>Dracaena terniflora</i> Roxb., <i>Dracaena cambodiana</i> Pierre ex Gagnep., Aizong (<i>Dracaena</i> sp.), and <i>Dracaena cochinchinensis</i> (Lour.) S.C. Chen. In all 4 species, both 5S and 45S rDNA showed hybridization signals in the paracentromeric region of a pair of chromosomes; the sizes of the 45S rDNA signals were larger than those of the 5S rDNA. Importantly, the telomeric repeat signals were located in the telomeric regions of almost all chromosomes. The results indicated that the chromosome number of all 4 <i>Dracaena</i> species is 2n = 40, and the lengths of the mitotic metaphase chromosomes range from 0.99 to 2.98 μm. Our results provide useful cytogenetic information, which will be beneficial to future studies in genome structure of the genus <i>Dracaena</i>.


2021 ◽  
Vol 12 ◽  
Author(s):  
Jiahong Zhu ◽  
Wan Zhao ◽  
Rongshuang Li ◽  
Dong Guo ◽  
Huiliang Li ◽  
...  

Dragon’s blood is a traditional medicine in which flavonoids are the main bioactive compounds; however, the underlying formation mechanism of dragon’s blood remains largely poorly understood. Chalcone isomerase (CHI) is the key enzyme in the flavonoid biosynthesis pathway. However, CHI family genes are not well understood in Dracaena cambodiana Pierre ex Gagnep, an important source plant of dragon’s blood. In this study, 11 CHI family genes were identified from D. cambodiana, and they were classified into three types. Evolutionary and transcriptional profiling analysis revealed that DcCHI1 and DcCHI4 might be involved in flavonoid production. Both DcCHI1 and DcCHI4 displayed low expression levels in stem under normal growth conditions and were induced by methyl jasmonate (MeJA), 6-benzyl aminopurine (6-BA, synthetic cytokinin), ultraviolet-B (UV-B), and wounding. The recombinant proteins DcCHI1 and DcCHI4 were expressed in Escherichia coli and purified by His-Bind resin chromatography. Enzyme activity assay indicated that DcCHI1 catalyzed the formation of naringenin from naringenin chalcone, while DcCHI4 lacked this catalytic activity. Overexpression of DcCHI1 or DcCHI4 enhanced the flavonoid production in D. cambodiana and tobacco. These findings implied that DcCHI1 and DcCHI4 play important roles in flavonoid production. Thus, our study will not only contribute to better understand the function and expression regulation of CHI family genes involved in flavonoid production in D. cambodiana but also lay the foundation for developing the effective inducer of dragon’s blood.


2020 ◽  
Vol 150 ◽  
pp. 112407 ◽  
Author(s):  
Jia-Hong Zhu ◽  
Dong-Nan Xia ◽  
Jing Xu ◽  
Dong Guo ◽  
Hui-Liang Li ◽  
...  

Forests ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 372
Author(s):  
Xupo Ding ◽  
Jiahong Zhu ◽  
Hao Wang ◽  
Huiqin Chen ◽  
Wenli Mei

Dragon’s blood that is extracted from Dracaena plants has been widely used as traditional medicine in various ancient cultures. The application of dragon’s blood has a cherished history in China, even though the original plants were not discovered for some period. Dracaena cochinchinensis and Dracaena cambodiana were successively discovered in southern China during the 1970s–1980s. In the last half of the century, Chinese scientists have extensively investigated the production of dragon’s blood from these two Dracaena species, whereas these results have not been previously systematically summarized, as in the present paper. Herein, we present the applied history in ancient China and artificially induced technologies for dragon’s blood development based on these two Dracaena species, in particular, using tissue cultures seedlings and tender plants of D. cambodiana. Big data research, including transcriptomic and genomic studies, has suggested that dragon’s blood might be a defense substance that is secreted by Dracaena plants in response to (a)biotic stimuli. This review represents an effort to highlight the progress and achievements from applied history as well as induction techniques that are used for the formation of dragon’s blood that have taken place in China. Such knowledge might aid in the global conservation of wild Dracaena species and contribute to understanding dragon blood formation mechanisms, eventually assisting in the efficient utilization of limited Dracaena plant resources for the sustainable production of dragon’s blood.


2019 ◽  
Vol 13 (1) ◽  
pp. 241-247
Author(s):  
Jatindra Sarma ◽  
Hussain Ahmed Barbhuiya ◽  
Santanu Dey

Dracaena cambodiana Pierre ex Gagnep., a dragon tree species, is reported here for the first time from India. Its taxonomic relationships with other closely related species of genus Dracaena Vand. ex L. are examined and discussed. A detailed taxonomic description, along with color photographs is provided to facilitate its future identification. Recent surveys confirm that the habitat and regional population of the plant is under severe threat. Hence, following IUCN Red List Categories and Criteria, it is regionally categorized as Critically Endangered. 


2018 ◽  
Vol 11 (3-4) ◽  
pp. 192-198 ◽  
Author(s):  
Jiahong Zhu ◽  
Pan Chen ◽  
Dong Guo ◽  
Huiliang Li ◽  
Ying Wang ◽  
...  

2018 ◽  
Vol 3 (2) ◽  
pp. 620-621 ◽  
Author(s):  
Zhi-Xin Zhu ◽  
Wei-Xue Mu ◽  
Jian-Hua Wang ◽  
Jin-Ran Zhang ◽  
Kun-Kun Zhao ◽  
...  

2018 ◽  
Vol 38 (8) ◽  
Author(s):  
杨立荣 YANG Lirong ◽  
张治礼 ZHANG Zhili ◽  
云勇 YUN Yong ◽  
严武平 YAN Wuping ◽  
陈宣 CHEN Xuan ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document