ponkan mandarin
Recently Published Documents


TOTAL DOCUMENTS

35
(FIVE YEARS 1)

H-INDEX

12
(FIVE YEARS 0)

Author(s):  
Yujiao Cheng ◽  
Guijie Li ◽  
Houjiu Wu ◽  
Linhua Huang ◽  
Hua Wang


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Mao Seoka ◽  
Gang Ma ◽  
Lancui Zhang ◽  
Masaki Yahata ◽  
Kazuki Yamawaki ◽  
...  

Abstract Nobiletin, a polymethoxy flavone (PMF), is specific to citrus and has been reported to exhibit important health-supporting properties. Nobiletin has six methoxy groups at the 3′,4′,5,6,7,8-positions, which are catalyzed by O-methyltransferases (OMTs). To date, researches on OMTs in citrus fruit are still limited. In the present study, a novel OMT gene (CitOMT) was isolated from two citrus varieties Satsuma mandarin (Citrus unshiu Marc.) and Ponkan mandarin (Citrus reticulata Blanco), and its function was characterized in vitro. The results showed that the expression of CitOMT in the flavedo of Ponkan mandarin was much higher than that of Satsuma mandarin during maturation, which was consistent with the higher accumulation of nobiletin in Ponkan mandarin. In addition, functional analysis showed that the recombinant protein of CitOMT had methylation activity to transfer a methyl group to 3′-hydroxy group of flavones in vitro. Because methylation at the 3′-position of flavones is vital for the nobiletin biosynthesis, CitOMT may be a key gene responsible for nobiletin biosynthesis in citrus fruit. The results presented in this study will provide new strategies to enhance nobiletin accumulation and improve the nutritional qualities of citrus fruit.



Plant Science ◽  
2019 ◽  
Vol 289 ◽  
pp. 110276 ◽  
Author(s):  
Feng-Quan Tan ◽  
Miao Zhang ◽  
Kai-Dong Xie ◽  
Yan-Jie Fan ◽  
Xin Song ◽  
...  


2018 ◽  
Vol 195 ◽  
pp. 120-127 ◽  
Author(s):  
Cristiane Colodel ◽  
Lúcia Cristina Vriesmann ◽  
Carmen Lúcia de Oliveira Petkowicz


Genome ◽  
2018 ◽  
Vol 61 (8) ◽  
pp. 595-604
Author(s):  
Jinping Xiao ◽  
Lanlan Zhang ◽  
Fangjuan Fan ◽  
Xubo Liu

Seedlessness is a highly desirable trait in citrus varieties. Sterility is the key determination for seedlessness formation. However, the molecular basis for female sterility in seedless mandarin remains unclear. Thus, a seedless Ponkan mandarin (Citrus reticulata Blanco ‘Lipeng No.2’), considered the bud mutation of normal seedy Ponkan, was collected to identify candidate genes involved in seedless variation. Suppression subtractive hybridization (SSH) screened 1091 uniESTs related to seedy and seedless Ponkan (727 singlets and 364 contigs), which mainly governed catalytic activity, transferase activity, and oxygen binding. By using RNA-Seq technology, 106 differentially expressed genes (DEGs) were captured, of which 74 were up-regulated and 32 were down-regulated. Gene Ontology and pathway analysis showed that six DEGs were enriched in the biosynthesis of secondary metabolite, whereas five DEGs were enriched in the signaling of plant hormones. The combined results of SSH and RNA-Seq indicated the importance of amino acid metabolism in seedless Ponkan. Our findings revealed that the mechanism of seedless Ponkan generation may be related to gene regulation, signal cascade, and hormone levels. This study provided a solid foundation for functional gene identification in seedless Ponkan and a good reference for relevant research on molecular mechanisms of female sterility in Ponkan mandarin.



2018 ◽  
Vol 13 (13) ◽  
pp. 650-656
Author(s):  
Maria Silva Pinto Kedma ◽  
Alexandre Fernandes Rodrigues de Melo Paulo ◽  
Marques Mondego Janaína ◽  
Cordeiro do Nascimento Luciana ◽  
Izabel Mendes Marques Cortez Maria ◽  
...  




Sign in / Sign up

Export Citation Format

Share Document