Effects of drought and salt stresses on man-made cyanobacterial crusts

Lan, Shubin; Wu, Li; Zhang, Delu; Hu, Chunxiang; Liu, Yongding

doi:10.1016/j.ejsobi.2010.08.002

Cited by 67 publications

(54 citation statements)

References 45 publications

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“…The mixture was shaken carefully and placed in darkness for 12 h. Then 0.1 mL of the mixture was observed with a microscope; cyanobacterial and microalgal biovolumes were calculated according to the method of Lan et al [13].…”

Section: Cyanobacterial and Microalgal Biomassmentioning

confidence: 99%

“…Filamentous cyanobacteria play an important role in the formation of BSCs due to their special performances, including relatively rapid growth, migration, and their extraordinary abilities to survive desiccation, radiation, extreme temperatures, high pH, and salinity [9,13,29,30]. Once BSCs have formed, their development and succession would be a natural process, and this process would be affected by ambient microenvironments such as soil structure and types, radiation intensity, topographic attributes, and so on [2,5,9,[31][32][33].…”

Section: Level Of Development and Successional Stages In Bscsmentioning

confidence: 99%

“…It has been verified that early successional cyanobacterial crusts are light in color, having a small part of fine particles, low protective ability to erosion (such as water and wind), and poor nutrition and water contents [6,11,13]. With the development of BSCs, dark-colored lichens or mosses later colonize the soil surface [1,2,6].…”

Section: Introductionmentioning

confidence: 99%

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Assessing Level of Development and Successional Stages in Biological Soil Crusts with Biological Indicators

Lan

Zhang

et al. 2013

Microb Ecol

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Biological soil crusts (BSCs) perform vital ecosystem services, but the difference in biological components or developmental level still affects the rate and type of these services. In order to differentiate crust successional stages in quantity and analyze the relationship between crust developmental level and successional stages, this work determined several biological indicators in a series of different developmental BSCs in the Shapotou region of China. The results showed that crust developmental level (level of development index) can be well indicated by crust biological indicators. Photosynthetic biomass was the most appropriate to differentiate crust successional stages, although both photosynthetic biomass and respiration intensity increased with the development and succession of BSCs. Based on of the different biological compositions, BSCs were quantificationally categorized into different successional stages including cyanobacterial crusts (lichen and moss coverages <20 %), lichen crusts (lichen coverage >20 % but moss coverage <20 %), semi-moss crusts (moss coverage >20 % but <75 %), and moss crusts (moss coverage >75 %). In addition, it was found that cyanobacterial and microalgal biomass first increased as cyanobacterial crusts formed, then decreased when lots of mosses emerged on the crust surface; however nitrogen-fixing cyanobacteria and heterotrophic microbes increased in the later developmental BSCs. The structural adjustment of biological components in the different developmental BSCs may reflect the requirement of crust survival and material transition.

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Section: Cyanobacterial and Microalgal Biomassmentioning

confidence: 99%

Section: Level Of Development and Successional Stages In Bscsmentioning

confidence: 99%

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Assessing Level of Development and Successional Stages in Biological Soil Crusts with Biological Indicators

Lan

Zhang

et al. 2013

Microb Ecol

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“…Cyanobacterial crusts form firstly due to the special performance of the filamentous cyanobacteria, including relatively rapid growth, migration, and their extraordinary adaptation ability to the extreme environmental conditions (Zaady et al, 2000;Garcia-Pichel and Pringault, 2001;Zhang et al, 2006;Lan et al, 2010b). Cyanobacterial crusts normally represent a primary successional stage of BSCs; however, they can facilitate crust succession to the later stages due to their ability in improving soil microenvironments and enhancing the probability of survival of later successional species (Acea et al, 2003;Hu and Liu, 2003;Kidron et al, 2008;Langhans et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Analysis of environmental factors determining development and succession in biological soil crusts

Lan

Zhang

et al. 2015

Science of The Total Environment

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“…Changes in pH affect the solubility and bioavailability of nutrients (12), transport of substances across the cytoplasmic membranes, and the activity of intra-and extracellular enzymes, as well as photosynthetic electron transport and the osmotic potential of the cytoplasm (13). Many studies have verified that cyanobacteria were able to tolerate a certain degree of drought and salinity, including the accumulation of extracellular substances, the protection of antioxidative system and the adjustment of other metabolic mechanism (14). Pierangelini et al (15) indicated that C. raciborskii NPD responds to low light by changing the size of the light harvesting antenna.…”

Section: Introductionmentioning

confidence: 99%

Growth assessment of cyanobacteria Anabaena Sp. FS 76 and Nostoc Sp. FS 77 affected by thermal shock condition

Taheri¹,

Shokravi²,

Hossaianzadeh³

2017

TJS

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Soil cyanobacteria Nostoc sp. FS 77 and Anabaena sp. FS 76 from the point of view to extreme constraints associated with light, carbon dioxide and cold shock, were evaluated. Samples were Prepared from algal museum of shahid Beheshti University and placed in vitro treatment limitations extreme light (2 micromoles quantum per square meter per second), carbon dioxide (non-inoculated carbon dioxide , non-aerated) temperature of 25°C and cold shock (0 0C ) at different times (0.5, 2 , 4 , 6 , 8minutes). The results showed that the cyanobacteria are able to maintain their survival in cold shock treatments. In cyanobacteria Anabaena shocks cause a lag phase. In cyanobacteria Nostoc, behaviors were different related to thermal shocks and by contrast Anabaena within 6 minutes had negative growth the fifth day. The photoperiod shock eight minutes was not observed a significant difference in the carotenoid content. To achieve stability in the filament part of Phycobilisomes shocks have played a similar role in half and eight minutes. However, the system of will be affected in the short times. It appears that chlorophyll formation in relation to the time and thermal shock in these cyanobacteria varies depending on the species.

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Effects of drought and salt stresses on man-made cyanobacterial crusts

Cited by 67 publications

References 45 publications

Assessing Level of Development and Successional Stages in Biological Soil Crusts with Biological Indicators

Assessing Level of Development and Successional Stages in Biological Soil Crusts with Biological Indicators

Analysis of environmental factors determining development and succession in biological soil crusts

Growth assessment of cyanobacteria Anabaena Sp. FS 76 and Nostoc Sp. FS 77 affected by thermal shock condition

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