干旱区生态环境知识资源中心(Arid): The long-term effect of removing the UV-protectant usnic acid from the thalli of the lichen Cladonia foliacea

Arid

DOI	10.1007/s11557-022-01831-y
	The long-term effect of removing the UV-protectant usnic acid from the thalli of the lichen Cladonia foliacea
	Veres, Katalin; Sinigla, Monika; Szabo, Krisztina; Varga, Nora; Farkas, Edit
通讯作者	Veres, K
来源期刊	MYCOLOGICAL PROGRESS
ISSN	1617-416X
EISSN	1861-8952
出版年	2022
卷号	21 期号:9
英文摘要	Terricolous lichens are abundant in semi-arid areas, where they are exposed to high irradiation. Photoprotection is essential for the algae as the photobiont provides the primer carbon source for both symbionts. The UV-protectant lichen metabolites and different quenching procedures of the alga ensure adequate photoprotection. Since the long-term effect of diminishing UV-protectant lichen metabolites is unknown, a major part of lichen secondary metabolites was removed from Cladonia foliacea thalli by acetone rinsing, and the lichens were then maintained under field conditions to investigate the effect on both symbionts for 3 years. Our aim was to determine if the decreased level of UV-protectant metabolites caused an elevated photoprotection in the algae and to reveal the dynamics of production of the metabolites. Photosynthetic activity and light protection were checked by chlorophyll a fluorescence kinetics measurements every 6 months. The concentrations of fumarprotocetraric and usnic acids were monitored by chromatographic methods. Our results proved that seasonality had a more pronounced effect than that of acetone treatment on the function of lichens over a long-term scale. Even after 3 years, the acetone-treated thalli contained half as much usnic acid as the control thalli, and the level of photoprotection remained unchanged in the algae. However, the amount of available humidity was a more critical limiting environmental factor than the amount of incoming irradiation affecting usnic acid production. The lichenicolous fungus Didymocyrtis cladoniicola became relatively more abundant in the acetone-treated samples than in the control samples, indicating a slight change caused by the treatment.
英文关键词	Lichen-forming fungi Symbiosis Photoprotection Acetone rinsing Seasonality Lichenicolous fungi
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000848740100001
WOS关键词	SECONDARY METABOLITES ; LOBARIA-PULMONARIA ; CHLOROPHYLL FLUORESCENCE ; LICHENICOLOUS FUNGI ; XANTHOPHYLL-CYCLE ; CLIMATE-CHANGE ; HIGHER-PLANTS ; LIGHT ENERGY ; GREEN ALGAL ; PHOTOPROTECTION
WOS类目	Mycology
WOS研究方向	Mycology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393830
推荐引用方式 GB/T 7714	Veres, Katalin,Sinigla, Monika,Szabo, Krisztina,et al. The long-term effect of removing the UV-protectant usnic acid from the thalli of the lichen Cladonia foliacea[J],2022,21(9).
APA	Veres, Katalin,Sinigla, Monika,Szabo, Krisztina,Varga, Nora,&Farkas, Edit.(2022).The long-term effect of removing the UV-protectant usnic acid from the thalli of the lichen Cladonia foliacea.MYCOLOGICAL PROGRESS,21(9).
MLA	Veres, Katalin,et al."The long-term effect of removing the UV-protectant usnic acid from the thalli of the lichen Cladonia foliacea".MYCOLOGICAL PROGRESS 21.9(2022).