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- W4252068139 abstract "Abstract. Mosses, as major components of later successional biological soil crusts (biocrusts), play many critical roles in arid and semi-arid ecosystems. Recently, some species of desiccation-tolerant mosses have been artificially cultured to speed up the recovery of biocrusts. Revealing the influencing factors on the vegetative propagation of mosses will benefit the restoration of moss crusts, which is an important reproductive mode of mosses in arid and semi-arid region. In this study, three desiccation-tolerant mosses (Barbula unguiculata, Didymodon vinealis and Didymodon tectorum) were stored at five temperature gradients (0 °C, 4 °C, 17 °C, 25 °C and 30 °C) for 40 days. Then vegetative propagation and physiological characteristics of the three mosses were investigated to determine the influence of storage temperature on vegetative propagation of desiccation-tolerant mosses and its mechanism. The results showed that vegetative propagation of the three mosses varied with temperature, and the most significant change was observed in D. tectorum after storage at different temperatures. Conversely, no significant difference was found in D. vinealis. Only germination percentage of B. unguiculata was not significantly different at all storage temperatures. The enhancement in regenerative capacity of the three mosses was accompanied by an increased temperature from 0 °C to 17 °C and a decrease beyond that. Malondialdehyde (MDA) content of the three mosses was increased by more than 50 % at all of the investigated temperatures, meanwhile, soluble sugar content increased in the three mosses. However, a decrease trend was observed in MDA content from 0 to 17 °C. As the temperature increased, the contents of chlorophyll and soluble protein in B. unguiculata increased, while decreased in D. vinealis and D. tectorum. The integrity of cell and its membrane probably is the important influencing factor on the vegetative propagation of desiccation-tolerant mosses. Although a 40-day storage period caused cell injury, our results suggested that storage temperature could enhance or suppress such injury and change vegetative propagation capacity of the three mosses. It could be concluded that the suitable storage temperature of B. unguiculata was 4 °C and the optimal temperature was 17 °C for D. vinealis and D. tectorum." @default.
- W4252068139 created "2022-05-12" @default.
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- W4252068139 date "2017-09-11" @default.
- W4252068139 modified "2023-10-17" @default.
- W4252068139 title "Effects of storage temperature on physiological characteristics and vegetative propagation of desiccation-tolerant mosses" @default.
- W4252068139 doi "https://doi.org/10.5194/bg-2017-368" @default.
- W4252068139 hasPublicationYear "2017" @default.
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