Milder winters would alter patterns of freezing damage for epiphytic lichens from the trans-Himalayas

doi:10.1038/s41598-024-79321-2

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	Milder winters would alter patterns of freezing damage for epiphytic lichens from the trans-Himalayas
	Worthy, Fiona Ruth; Goldberg, Stefanie D.; Thiyagaraja, Vinodhini; Wang, Li Song; Wang, Xin Yu
	2024
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	14 期号:1 页码:28522
摘要	Trans-Himalayan winters are projected to become milder, with shifting precipitation patterns and freeze-thaw cycles; changing stressors for their lichen communities. Lichens from Antarctica and high latitudes are cryoresistant when dry, but susceptible to cell damage if frozen when wet, or subjected to repeated freeze-thaw events. Little is known regarding cryoresistance in high-elevation, mid-latitude lichens. We collected thalli of nine species of epiphytic lichenized fungi, from three regions of the trans-Himalayas; at approximate to 4000 m, 3400 m and 2400 m elevation. We subjected thalli to differing freezing (continuous - 18 degrees C and - 36 degrees C or freeze-thaw cycles in natural daylight) and moisture conditions. Even dry thalli suffered some damage. Frozen wet thalli had greater chlorophyll degradation and reduced chlorophyll content. There were no clear elevational trends in freeze-thaw susceptibility: it caused more damage than continuous freezing. The most freeze-thaw resilient lichens were Dolichousnea longissima (from 4000 m) and Usnea florida (from 2400 m). However, species from coldest sites were most resilient to extreme freezing. Under predicted climate change conditions these sites would experience fewer annual freeze-thaw cycles, annual sub-zero days and frost days. Reduced freezing constraints might allow range expansion of mid-elevation lichens, but increase competitive pressures and temperature stressors impacting high-elevation lichens.
DOI	10.1038/s41598-024-79321-2
WOS记录号	WOS:001359321100031
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75976
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Worthy, Fiona Ruth,Goldberg, Stefanie D.,Thiyagaraja, Vinodhini,et al. Milder winters would alter patterns of freezing damage for epiphytic lichens from the trans-Himalayas[J]. SCIENTIFIC REPORTS,2024,14(1):28522.
APA	Worthy, Fiona Ruth,Goldberg, Stefanie D.,Thiyagaraja, Vinodhini,Wang, Li Song,&Wang, Xin Yu.(2024).Milder winters would alter patterns of freezing damage for epiphytic lichens from the trans-Himalayas.SCIENTIFIC REPORTS,14(1),28522.
MLA	Worthy, Fiona Ruth,et al."Milder winters would alter patterns of freezing damage for epiphytic lichens from the trans-Himalayas".SCIENTIFIC REPORTS 14.1(2024):28522.

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