干旱区生态环境知识资源中心(Arid): The Roles of the Anthraquinone Parietin in the Tolerance to Desiccation of the Lichen Xanthoria parietina: Physiology and Anatomy of the Pale and Bright-Orange Thalli

Arid

DOI	10.3390/ijms25137067
	The Roles of the Anthraquinone Parietin in the Tolerance to Desiccation of the Lichen Xanthoria parietina: Physiology and Anatomy of the Pale and Bright-Orange Thalli
	Daminova, Amina G.; Leksin, Ilya Y.; Khabibrakhmanova, Venera R.; Gurjanov, Oleg P.; Galeeva, Ekaterina I.; Trifonova, Tatyana V.; Khamatgalimov, Ayrat R.; Beckett, Richard P.; Minibayeva, Farida V.
通讯作者	Minibayeva, FV
来源期刊	INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
ISSN	1661-6596
EISSN	1422-0067
出版年	2024
卷号	25 期号:13
英文摘要	Lichens are symbiotic organisms that effectively survive in harsh environments, including arid regions. Maintaining viability with an almost complete loss of water and the rapid restoration of metabolism during rehydration distinguishes lichens from most eukaryotic organisms. The lichen Xanthoria parietina is known to have high stress tolerance, possessing diverse defense mechanisms, including the presence of the bright-orange pigment parietin. While several studies have demonstrated the photoprotective and antioxidant properties of this anthraquinone, the role of parietin in the tolerance of lichens to desiccation is not clear yet. Thalli, which are exposed to solar radiation and become bright orange, may require enhanced desiccation tolerance. Here, we showed differences in the anatomy of naturally pale and bright-orange thalli of X. parietina and visualized parietin crystals on the surface of the upper cortex. Parietin was extracted from bright-orange thalli by acetone rinsing and quantified using HPLC. Although acetone rinsing did not affect PSII activity, thalli without parietin had higher levels of lipid peroxidation and a lower membrane stability index in response to desiccation. Furthermore, highly pigmented thalli possess thicker cell walls and, according to thermogravimetric analysis, higher water-holding capacities than pale thalli. Thus, parietin may play a role in desiccation tolerance by stabilizing mycobiont membranes, providing an antioxidative defense, and changing the morphology of the upper cortex of X. parietina.
英文关键词	parietin lichen desiccation thallus anatomy photosynthesis lipid peroxidation membrane stability index extractable substances thermal decomposition
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001266743900001
WOS关键词	SECONDARY METABOLITES ; SOLAR-RADIATION ; UV-B ; EXTREMOTOLERANCE ; ANTIOXIDANT ; PROTECTION ; RESISTANCE ; HYDRATION ; OZONE
WOS类目	Biochemistry & Molecular Biology ; Chemistry, Multidisciplinary
WOS研究方向	Biochemistry & Molecular Biology ; Chemistry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404258
推荐引用方式 GB/T 7714	Daminova, Amina G.,Leksin, Ilya Y.,Khabibrakhmanova, Venera R.,et al. The Roles of the Anthraquinone Parietin in the Tolerance to Desiccation of the Lichen Xanthoria parietina: Physiology and Anatomy of the Pale and Bright-Orange Thalli[J],2024,25(13).
APA	Daminova, Amina G..,Leksin, Ilya Y..,Khabibrakhmanova, Venera R..,Gurjanov, Oleg P..,Galeeva, Ekaterina I..,...&Minibayeva, Farida V..(2024).The Roles of the Anthraquinone Parietin in the Tolerance to Desiccation of the Lichen Xanthoria parietina: Physiology and Anatomy of the Pale and Bright-Orange Thalli.INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES,25(13).
MLA	Daminova, Amina G.,et al."The Roles of the Anthraquinone Parietin in the Tolerance to Desiccation of the Lichen Xanthoria parietina: Physiology and Anatomy of the Pale and Bright-Orange Thalli".INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES 25.13(2024).