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The Response of Spore Germination of Sphagnum Mosses to Single and Combined Fire-Related Cues

Yusup, Shuayib and Sundberg, Sebastian and Fan, Beibei and Sulayman, Mamtimin and Bu, Zhao-Jun (2022). The Response of Spore Germination of Sphagnum Mosses to Single and Combined Fire-Related Cues. Plants. 11 :4 , 485
[Research article]

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Abstract

Plants in flammable ecosystems have different response strategies to fire, such as increasing germination after exposure to smoke and break of dormancy through heat shock. Peatlands are ecosystems that are more likely to be disturbed by fire with increasing temperatures, but it is not clear how fire affects spore germination of Sphagnum, the dominant plants in peatlands. Here, we hypothesize that Sphagnum spores respond positively to single and combined treatments of moderate heat and smoke (by increased germinability), while spore germinability decreases in response to high temperature. We exposed the Sphagnum spores of four selected species (S. angustifolium, S. fuscum, S. magellanicum and S. squarrosum) collected from peatlands in the Changbai Mountains to heat (40, 60 and 100 degrees C), on its own and combined with smoke-water treatments. Our results showed that a heat of 100 degrees C inhibited the spore germination or even killed spores of all species, while spore germination of three (Sphagnum angustifolium, S. fuscum and S. squarrosum) of the four species was promoted by 40 and 60 degrees C heat compared to the control (20 degrees C). Hollow species (S. angustifolium and S. squarrosum) showed a stronger positive responsive to heat than hummock species (S. fuscum and S. magellanicum). Sphagnum fuscum spores responded positively to the combined heat and smoke treatment while the other species did not. For the first time, we demonstrate the positive effects of heat on its own and in combination with smoke on spore germination in wetland mosses, which may be important for the establishment and persistence of peatmoss populations after fire.

Authors/Creators:Yusup, Shuayib and Sundberg, Sebastian and Fan, Beibei and Sulayman, Mamtimin and Bu, Zhao-Jun
Title:The Response of Spore Germination of Sphagnum Mosses to Single and Combined Fire-Related Cues
Series Name/Journal:Plants
Year of publishing :2022
Volume:11
Number:4
Article number:485
Number of Pages:13
Publisher:MDPI
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:spore germinability, fire disturbance, persistence, germination cue
URN:NBN:urn:nbn:se:slu:epsilon-p-116458
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116458
Additional ID:
Type of IDID
DOI10.3390/plants11040485
Web of Science (WoS)000764657500001
ID Code:27432
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Swedish Species Information Centre
Deposited By: SLUpub Connector
Deposited On:25 Mar 2022 10:25
Metadata Last Modified:25 Mar 2022 10:31

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