Integrated transcriptomics and metabolomics reveal specific phenolic and flavonoid accumulation in licorice (Glycyrrhiza uralensis Fisch.) induced by arbuscular mycorrhiza symbiosis under drought stress

被引：6

作者：

Xie, Wei ^{[1
,2
]}

Hao, Zhipeng ^{[1
,5
]}

Zhou, Jun ^{[3
]}

Fu, Wei ^{[1
,2
]}

Guo, Lanping ^{[4
]}

Zhang, Xin ^{[1
]}

Chen, Baodong ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Univ Bourgogne Franche Comte, Chrono Environm UMR6249, CNRS, F-25000 Besancon, France

[4] China Acad Chinese Med Sci, Natl Resource Ctr Chinese Mat Med, State Key Lab Breeding Base Dao di Herbs, Beijing 100700, Peoples R China

[5] Res Ctr Ecoenvironm Sci, 18 Shuangqinglu, Beijing 100085, Peoples R China

来源：

PLANT PHYSIOLOGY AND BIOCHEMISTRY | 2023年 / 205卷

基金：

中国国家自然科学基金;

关键词：

Arbuscular mycorrhizal fungi; Licorice; Specialized metabolism; Water deficit; Flavonoids; Lignin; FUNGI; PLANT; GENOME; BIOSYNTHESIS; METABOLISM; TOLERANCE; RESPONSES; DEFENSE; ANNOTATION; PHOSPHORUS;

D O I：

10.1016/j.plaphy.2023.108173

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Arbuscular mycorrhizal (AM) symbiosis can strengthen plant defense against abiotic stress, such as drought, through multiple mechanisms; however, the specialized chemical defenses induced by AM symbiosis are largely unknown. In a pot experiment, licorice (Glycyrrhiza uralensis Fisch.) inoculated with and without arbuscular mycorrhizal fungus Rhizophagus irregularis Schenck & Smith were grown under well-watered or water deficit conditions. Transcriptomic and metabolomic analyses were combined to investigate licorice root specialized metabolism induced by AM symbiosis under drought stress. Results showed that mycorrhizal plants had few dead leaves, less biomass reduction, and less differentially expressed genes and metabolite features in response to drought compared with nonmycorrhizal plants. Transcriptomic and metabolomic data revealed that mycorrhizal roots generally accumulated lignin regardless of the water regime; however, the expression of genes involved in lignin biosynthesis was significantly downregulated by drought stress in mycorrhizal plants. By contrast, AM inoculation significantly decreased specialized metabolites accumulation, including phenolics and flavonoids under well-watered conditions, whereas these decreases turned to be nonsignificant under drought stress. Moreover, these specific phenolics and flavonoids showed significant drought-induced accumulation pattern in mycorrhizal roots. These results highlight that accumulation of specific root phenolics and flavonoids may support the drought tolerance of mycorrhizal plants.

引用

页数：16