Studies on the aquatic hyphomycetes of a sulfur spring in the Western Ghats, India

Abstract

Studies on the occurrence of aquatic hyphomycetes were carried out in Panekal sulfur spring in the Western Ghats, India by incubation of leaf litter and analysis of natural foam and of induced foam. Sampling was done once every three months over a period of two years from September 1989 to June 1991. The temperature, pH, dissolved oxygen, and sulfide content of water were also measured. No fungi were observed within the spring, whereas 16 species belonging to 13 genera were isolated from two outflow sites of the stream. The percent frequency of Triscelophorus monosporus was high (24.0%). The temperature of water in the spring ranged between 30.0 and 38.5°C and the sulfide content between 3.2 and 4.3 mg 1-1. Studies showed that sulfide water (4.0 mg 1-1) from the spring inhibited the growth of the colonies of Dactylella aquatica, Phalangispora constricta, Tetracladium setigerum, Vermispora cauveriana, and Wiesneriomyces laurinus. When the leaves colonized by aquatic hyphomycetes were incubated at different temperatures in sulfur-spring water and stream water separately, sporulation was not observed in any of the fungi at and above 35°C except Phalangispora constricta, which could sporulate at 35°C. At lower temperatures (15-30°C) relatively fewer species were found to sporulate in sulfur-spring water than in stream water.

Fungal Diversity and Its Relationship with Environmental Factors in Coastal Sediments from Guangdong, China

“…In particular, through relevant research of 147 genera of fungi, it was found that 14 genera of fungi were detected for the first time in the coastal environment, among which the abundance of 2 genera— Laetisaria [ 26 ] and Spirosphaera [ 27 ]—ranked in the top 10 of all fungi. The remaining 12 fungal genera were as follows: Gibellulopsis [ 28 ], Monacrosporium [ 29 ], Spegazzinia [ 30 ], Rhizopycnis [ 31 ], Dokmaia [ 32 ], Vermispora [ 33 ], Hirsutella [ 34 ], Erythricium [ 35 ], Limonomyces [ 36 ], Entorrhiza [ 37 ], Dinemasporium [ 38 ], and Villosiclava [ 39 ].…”

Five Novel Freshwater Ascomycetes Indicate High Undiscovered Diversity in Lotic Habitats in Thailand

“…Based on the published works from 2015-2020, 40 novel pleosporolean taxa were discovered: Aigialaceae (1 species) [93], Anteagloniaceae (1 species) [14], Astrosphaeriellaceae (2 species) [14], Dictyosporiaceae (7 species) [14,[94][95][96][97], Latoruaceae (2 species) [14,98], Lentitheciaceae (4 species) [20,99,100], Ligninsphaeriaceae (1 species) [15], Lindgomycetaceae (3 species) [14,101], Longipedicellataceae (3 species) [14], Lophiostomataceae (1 species) [14], Melanommataceae (1 species) [97], Morosphaeriaceae (3 species) [14,102], Nigrogranaceae (1 species) [14], Occultibambusaceae (1 species) [103], Parabambusicolaceae (1 species) [14], Phaeosphaeriaceae (1 species) [104], Pleosporales genera insertae sedis (2 species) [11,14], Pseudoastrosphaeriellaceae (1 species) [14], Tetraplosphaeriaceae (1 species) [14], Trematosphaeriaceae (1 species) [97], and Wicklowiaceae (2 species) [19,24]. Camposporium thailandicum is an addition to the known twelve Camposporium species recorded in freshwater habitats: C. antennatum [105][106][107], C. appendiculatum [27], C. cambrense [108][109][110], C. fusisporum [111], C. h...…”

Hongos ingoldianos de las cascadas del Parque Estatal Agua Blanca, Tabasco, México

“…Nueve especies se registran por primera vez en el estado de Tabasco y México. Además, se encontraron dos especies previamente identificadas tanto en ambientes dulceacuícolas como asociadas a restos vegetales: Phalangispora nawawi, encontrada en ambientes dulceacuícolas en Venezuela (Smits et al, 2007;Fernández et al, 2010;Fernández y Smits, 2015), y que en México fue registrada en restos vegetales en el estado de Veracruz (Heredia et al, 2000); mientras que Wiesneriomyces laurinus se ha reportado en ambientes dulceacuícolas de Brasil (Schoenlein-Crusius y Piccolo, 2003), Cuba (Delgado-Rodríguez y Mena-Portales, 2004), India (Rajashektar y Kaveriappa, 1996Kaveriappa, y 2003Sudheep y Sridhar, 2011), Japón (Hoyosa y Tanaka, 2007), y en México, en restos vegetales en Veracruz (Heredia et al, 2000)y Tabasco (Becerra et al, 2007;Martínez-Rivera et al, 2014).…”