Results 171 to 180 of about 6,906 (193)

Genetic control of flavone synthase II activity in flowers of Gerbera hybrids

Phytochemistry, 1998
In flower extracts of defined genotypes of Gerbera hybrids an enzyme activity was demonstrated which catalyses the introduction of a double bound between the C atoms 2 and 3 of the flavanones narin- genin and eriodictyol. The products formed were the corresponding flavones, apigenin and luteolin. Similar to flavone synthases II from other plant species,
Stefan Martens, Gert Forkmann
exaly   +2 more sources

The moss flavone synthase I positively regulates the tolerance of plants to drought stress and UV-B radiation

Plant Science, 2020
Flavonoids are extensively distributed secondary metabolites in land plants. They play a critical role in plant evolution from aquatic to terrestrial and plant adaption to ultraviolet radiation. However, the downstream branching pathway of flavonoids and its regulatory mechanism in bryophytes, which are the most ancient of terrestrial plants, remain ...
Kaoshan Chen, Pengying Zhang
exaly   +3 more sources

Expression of a soluble flavone synthase allows the biosynthesis of phytoestrogen derivatives in Escherichia coli

Applied Microbiology and Biotechnology, 2006
Flavones are plant secondary metabolites with potent pharmacological properties. We report the functional expression of FSI, a flavonoid 2-oxoglutarate-dependent dioxygenase-encoding flavone synthase from parsley in Escherichia coli. This expression allows the biosynthesis of various flavones from phenylpropanoid acids in recombinant E.
EFFENDI Leonard, Joseph Chemler, Matthéos A G Koffas   +2 more
exaly   +3 more sources

Gene mining and identification of a flavone synthase II involved in flavones biosynthesis by transcriptomic analysis and targeted flavonoid profiling in Chrysanthemum indicum L.

Industrial Crops and Products, 2019
Abstract Chrysanthemum indicum L. is a type of herb that is widely used in China, Korea, and Japan. It has been used as an ingredient in traditional medicines, tea, and functional food because of its various anti-inflammatory and anti-oxidant bioactivities. Such bioactivities have been associated with flavonoids such as apigenin, luteolin and linarin
Jinfen Yang, Ruoting Zhan, Weiwen Chen   +2 more
exaly   +2 more sources

Flavone synthase

, 2009
openaire   +2 more sources

Screening and heterologous expression of flavone synthase and flavonol synthase to catalyze hesperetin to diosmetin

Biotechnology Letters, 2021
In this study, 44 flavone synthases (FNS) and flavonol synthases (FLS) from different origins were collected. The instability index and conserved domain of the enzymes were analyzed through bioinformatics analysis, the results of which allowed us to screen suitable enzymes for constructing recombinant Escherichia coli.
Zhen Wang, Xu Huang, Juan Liu, Feiyao Xiao, Miaomiao Tian, Shenghua Ding, Yang Shan   +6 more
openaire   +2 more sources

Flavones and flavone synthases

Phytochemistry, 2005
Within the secondary metabolite class of flavonoids which consist of more than 9000 known structures, flavones define one of the largest subgroups. Their natural distribution is demonstrated for almost all plant tissues. Various flavone aglyca and their O- or C-glycosides have been described in the literature.
Martens, S., Mithöfer, A.
openaire   +3 more sources

Functional identification of a flavone synthase and a flavonol synthase genes affecting flower color formation in Chrysanthemum morifolium

Plant Physiology and Biochemistry, 2021
Flavonoids confer a wide color range to plants, thus influencing the flower quality and commercial value of various ornamental plants. Flavones and flavonols are colorless pigments that are distinct from the colored anthocyanins. Flavones and flavonols are transformed from flavanones and dihydrokaempferol, which are catalyzed by flavone synthase (FNS ...
Yuxi, Wang, Li-Jie, Zhou, Yiguang, Wang, Shenhui, Liu, Zhiqiang, Geng, Aiping, Song, Jiafu, Jiang, Sumei, Chen, Fadi, Chen   +8 more
openaire   +2 more sources

Screening and characterizing flavone synthases and its application in biosynthesizing vitexin from naringenin by a one-pot enzymatic cascade

Enzyme and Microbial Technology, 2022
C-glycosylated flavonoids are important structural derivatives of flavonoids and have a variety of physiological activities. Flavone synthase is a key enzyme for producing C-glycosylated flavonoids. In this study, three flavone synthase genes were cloned, overexpressed and characterized in E. coli.
Huan, Wang, Yangbao, Wu, Yang, Liu, Linguo, Zhao, Jianjun, Pei   +4 more
openaire   +2 more sources

A natural variation of flavone synthase II gene enhances flavone accumulation and confers drought adaptation in chrysanthemum

New Phytologist
Summary Flavones, a key group of flavonoids, play a significant role in plant adaptation to ecological niches and are valuable medicinal resources. However, the genetic basis underlying their contribution to ecological adaptation remains largely unknown.
Jiayi Luo, Chang Luo, Mingzheng Han, Qinrui Wang, Zhenzhen Song, Haixia Zhang, Qiang Gao, Tao Lin, Conglin Huang, Yafei Zhao, Chao Ma   +10 more
openaire   +2 more sources