Free — living blue — green algae in tropical soils

Roger, Pierre-Armand; Reynaud, P. A.

doi:10.1007/978-94-009-7529-3_5

Cited by 56 publications

(27 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They are often found in nutrient-depleted environments and may represent the dominant population under extreme environmental conditions. Cyanobacteria are also known to form crusts in desert or tropical soils (Roger & Reynaud, 1982). In such environments they thrive under conditions of low matrix water potential.…”

Section: Introductionmentioning

confidence: 99%

Crinalium epipsammum sp. nov.: a filamentous cyanobacterium with trichomes composed of elliptical cells and containing poly- -(1,4) glucar (cellulose)

Winder¹,

Stal²,

Mur³

1990

Journal of General Microbiology

View full text Add to dashboard Cite

This paper describes the isolation and characterization of a new species of cyanobacterium, Crinalium epipSammum. The assignment to the genus Crinalium, first described by Crow (1927), is based on a property which is u n d for cyanobacteria: trichomes viewed in cross-section are elliptical rather than circular. This organism was isolated from the surface layer of sandy soil of coastal dunes in The Netherlands. The organism is non-motile and drought resistant, and its cell surface is hydrophilic. The temperature optimum for growth is 25 OC. The mean DNA base composition is 33.9 mol% G + C. The cell wall is relatively thick and contains poly-p-(1,4)glucan (duIose), which is unusual for qanobadria.

show abstract

Section: Introductionmentioning

confidence: 99%

Crinalium epipsammum sp. nov.: a filamentous cyanobacterium with trichomes composed of elliptical cells and containing poly- -(1,4) glucar (cellulose)

Winder¹,

Stal²,

Mur³

1990

Journal of General Microbiology

View full text Add to dashboard Cite

show abstract

“…The acts of these algae include: (1) Increase in soil pores with having filamentous structure and production of adhesive substances. (2) Excretion of growth-promoting substances such as hormones (auxin, gibberellin), vitamins, amino acids (Roger andReynaud 1982, Rodriguez et al 2006). (3) Increase in water-holding capacity through their jelly structure (Roger and Reynaud 1982).…”

mentioning

confidence: 99%

“…(2) Excretion of growth-promoting substances such as hormones (auxin, gibberellin), vitamins, amino acids (Roger andReynaud 1982, Rodriguez et al 2006). (3) Increase in water-holding capacity through their jelly structure (Roger and Reynaud 1982). (4) Increase in soil biomass after their death and decomposition.…”

mentioning

confidence: 99%

Cyanobacteria from paddy fields in Iran as a biofertilizer in rice plants

Saadatnia¹,

Riahi²

2009

Plant Soil Environ.

147

View full text Add to dashboard Cite

In this research cyanobacteria (Blue-Green Algae, BGA) were isolated, identified, multiplied and used as an inoculum in pot rice experiment. The pH, moisture and algal population were measured in four seasons. The highest and lowest pH (6.7, 6.2), moisture of soil (43%, 34%) and algal population (12, 20 Colony-Forming Units/50 ml on A and B medium and 4, 5 Colony-Forming Units/50 ml on A and B medium) were recorded in spring and winter, respectively. The only heterocystous cyanobacteria were found in soil samples identified as Anabaena with four species (A. spiroides, A. variabilis, A. torulosa and A. osillarioides). The germination of rice seeds treated with cyanobacteria was faster than control. The result of pot experiment were: increase of 53% in plant height; 66% in roots length; 58% in fresh leaf and stem weight; 80% in fresh root weight; 125% in dry leaf and stem weight; 150% in dry root weight; 20% in soil moisture; 28% in soil porosity and a decrease of 9.8% in soil bulk density and 4.8% in soil particle density. There were significant differences (P < 0.05) in pot treated with BGA as compared with control.

show abstract

“…In the present study, highest diatom diversity and abundance was observed in seedling stage of second cultivation (Virippu), when light is abundant due to less canopy of the crop plant. Roger and Reynaud (1982) also observed that diatom community increases in paddy fields during seedling stage of the crop. Lin et al (2013), Fujita andOhtsuka (2005), also supported this view that diatom cell density reaches the highest number just after transplanting of rice and thereafter decreases.…”

Section: Discussionmentioning

confidence: 74%

Ecology and Diversity of Diatoms in Kuttanadu Paddy Fields in Relation to Soil Regions, Seasons and Paddy-Growth-Stages

Vijayan¹,

Ray²

2016

JPS

View full text Add to dashboard Cite

This assessment of ecology and diversity of Diatoms in Kuttanadu, is continuation of the previous publications of Green-algae and Blue-green-algae of the same region; all the three investigations were carried out simultaneously. The unique Kuttanadu wetlands (90˚17'N to 90˚40'N; 760˚19'E to 760˚33'E), a well known 'Rice bowl' of Kerala, spread over 53,639 hectares, is located in Alapuzha District of Kerala, India. This wetland was once known for its high biodiversity, but currently severely affected by intensive green-revolution activities of past few decades. Main objective of the present report is to explain the diversity and ecological status of Diatoms in relation to the environment conditions currently existing in the region. Duration of the study was from December 2009 to October 2010. Soil samples of three different soil-types in two different crop-seasons, at two diverse crop-growth-stages are analyzed and compared. Altogether 120 composite soil samples randomly collected from the broad wetlands are analyzed. A rich community of Diatoms, of 40 species is found out. The order Naviculales is observed as the dominant Diatom (40%) in these paddy wetlands. Ecological parameters of Diatoms were found highest in the Lower Kuttanadu soil region, during Virippu season, at the seedling-stage of the crop, whereas the lowest value for most of the parameters were observed in Kayal soils during Puncha season at the seedling-stage. Apart from the specific soil factors influencing Diatom population characteristics in the region, crop seasons and soil phosphorus are found to have significant influence on Diatoms in this wetland paddy soils.

show abstract

Free — living blue — green algae in tropical soils

Cited by 56 publications

References 23 publications

Crinalium epipsammum sp. nov.: a filamentous cyanobacterium with trichomes composed of elliptical cells and containing poly- -(1,4) glucar (cellulose)

Crinalium epipsammum sp. nov.: a filamentous cyanobacterium with trichomes composed of elliptical cells and containing poly- -(1,4) glucar (cellulose)

Cyanobacteria from paddy fields in Iran as a biofertilizer in rice plants

Ecology and Diversity of Diatoms in Kuttanadu Paddy Fields in Relation to Soil Regions, Seasons and Paddy-Growth-Stages

Contact Info

Product

Resources

About