Effects of storage temperature on the physiological characteristics and vegetative propagation of desiccation-tolerant mosses
Mosses, as major components of later successional biological soil crusts (biocrusts), play many critical roles in arid and semiarid ecosystems. Recently, some species of desiccation-tolerant mosses have been artificially cultured with the aim of accelerating the recovery of biocrusts. Revealing...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2018-02-01
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| Series: | Biogeosciences |
| Online Access: | https://www.biogeosciences.net/15/797/2018/bg-15-797-2018.pdf |
| _version_ | 1828355836857024512 |
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| author | Y. Guo Y. Zhao |
| author_facet | Y. Guo Y. Zhao |
| author_sort | Y. Guo |
| collection | DOAJ |
| description | Mosses, as major components of later successional biological soil
crusts (biocrusts), play many critical roles in arid and semiarid
ecosystems. Recently, some species of desiccation-tolerant mosses
have been artificially cultured with the aim of accelerating the
recovery of biocrusts. Revealing the factors that influence the
vegetative propagation of mosses, which is an important reproductive
mode of mosses in dry habitats, will benefit the restoration of moss
crusts. In this study, three air-dried desiccation-tolerant mosses
(<i>Barbula unguiculata</i>, <i>Didymodon vinealis</i>, and
<i>Didymodon tectorum</i>) were hermetically sealed and stored at
five temperature levels (0, 4, 17, 25, and 30 °C) for
40 days. Then, the vegetative propagation and physiological
characteristics of the three mosses were investigated to determine
the influence of storage temperature on the vegetative propagation
of desiccation-tolerant mosses and the mechanism. The results showed
that the vegetative propagation of the three mosses varied with
temperature. The most variation in vegetative propagation among
storage temperatures was observed in <i>D. tectorum</i>, followed
by the variation observed in <i>B. unguiculata</i>. In contrast,
no significant difference in propagation among temperatures was
found in <i>D. vinealis</i>. The regenerative capacity of the
three mosses increased with increasing temperature from 0 to
17 °C, accompanied by a decrease in malondialdehyde (MDA)
content, and decreased thereafter. As the temperature increased, the
chlorophyll and soluble protein contents increased in
<i>B. unguiculata</i> but decreased in <i>D. vinealis</i> and
<i>D. tectorum</i>. As to storage, the MDA and soluble sugar
contents increased after storage. The MDA content of the three
mosses increased at each of the investigated temperatures by more
than 50 % from the initial values, and the soluble sugar content
became higher than before in the three mosses. The integrity of
cells and cell membranes is likely the most important factor
influencing the vegetative propagation of desiccation-tolerant
mosses. A 40-day storage period caused cell injury. Our results
suggest that storage temperature can enhance or suppress such injury
and change the regenerative capacity of the three mosses. The data
indicate that the suitable storage temperature is 4 °C for
<i>B. unguiculata</i> and 17 °C for both
<i>D. vinealis</i> and <i>D. tectorum</i>. |
| first_indexed | 2024-04-14T02:49:38Z |
| format | Article |
| id | doaj.art-d9decdd132034428b4438698a76bb438 |
| institution | Directory Open Access Journal |
| issn | 1726-4170 1726-4189 |
| language | English |
| last_indexed | 2024-04-14T02:49:38Z |
| publishDate | 2018-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Biogeosciences |
| spelling | doaj.art-d9decdd132034428b4438698a76bb4382022-12-22T02:16:21ZengCopernicus PublicationsBiogeosciences1726-41701726-41892018-02-011579780810.5194/bg-15-797-2018Effects of storage temperature on the physiological characteristics and vegetative propagation of desiccation-tolerant mossesY. Guo0Y. Zhao1State Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, 712100, Shaanxi, ChinaState Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, 712100, Shaanxi, ChinaMosses, as major components of later successional biological soil crusts (biocrusts), play many critical roles in arid and semiarid ecosystems. Recently, some species of desiccation-tolerant mosses have been artificially cultured with the aim of accelerating the recovery of biocrusts. Revealing the factors that influence the vegetative propagation of mosses, which is an important reproductive mode of mosses in dry habitats, will benefit the restoration of moss crusts. In this study, three air-dried desiccation-tolerant mosses (<i>Barbula unguiculata</i>, <i>Didymodon vinealis</i>, and <i>Didymodon tectorum</i>) were hermetically sealed and stored at five temperature levels (0, 4, 17, 25, and 30 °C) for 40 days. Then, the vegetative propagation and physiological characteristics of the three mosses were investigated to determine the influence of storage temperature on the vegetative propagation of desiccation-tolerant mosses and the mechanism. The results showed that the vegetative propagation of the three mosses varied with temperature. The most variation in vegetative propagation among storage temperatures was observed in <i>D. tectorum</i>, followed by the variation observed in <i>B. unguiculata</i>. In contrast, no significant difference in propagation among temperatures was found in <i>D. vinealis</i>. The regenerative capacity of the three mosses increased with increasing temperature from 0 to 17 °C, accompanied by a decrease in malondialdehyde (MDA) content, and decreased thereafter. As the temperature increased, the chlorophyll and soluble protein contents increased in <i>B. unguiculata</i> but decreased in <i>D. vinealis</i> and <i>D. tectorum</i>. As to storage, the MDA and soluble sugar contents increased after storage. The MDA content of the three mosses increased at each of the investigated temperatures by more than 50 % from the initial values, and the soluble sugar content became higher than before in the three mosses. The integrity of cells and cell membranes is likely the most important factor influencing the vegetative propagation of desiccation-tolerant mosses. A 40-day storage period caused cell injury. Our results suggest that storage temperature can enhance or suppress such injury and change the regenerative capacity of the three mosses. The data indicate that the suitable storage temperature is 4 °C for <i>B. unguiculata</i> and 17 °C for both <i>D. vinealis</i> and <i>D. tectorum</i>.https://www.biogeosciences.net/15/797/2018/bg-15-797-2018.pdf |
| spellingShingle | Y. Guo Y. Zhao Effects of storage temperature on the physiological characteristics and vegetative propagation of desiccation-tolerant mosses Biogeosciences |
| title | Effects of storage temperature on the physiological characteristics and vegetative propagation of desiccation-tolerant mosses |
| title_full | Effects of storage temperature on the physiological characteristics and vegetative propagation of desiccation-tolerant mosses |
| title_fullStr | Effects of storage temperature on the physiological characteristics and vegetative propagation of desiccation-tolerant mosses |
| title_full_unstemmed | Effects of storage temperature on the physiological characteristics and vegetative propagation of desiccation-tolerant mosses |
| title_short | Effects of storage temperature on the physiological characteristics and vegetative propagation of desiccation-tolerant mosses |
| title_sort | effects of storage temperature on the physiological characteristics and vegetative propagation of desiccation tolerant mosses |
| url | https://www.biogeosciences.net/15/797/2018/bg-15-797-2018.pdf |
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