干旱区生态环境知识资源中心(Arid): Seasonal variation and potential roles of dark septate fungi in an arid grassland

Arid

DOI	10.1080/00275514.2021.1965852
	Seasonal variation and potential roles of dark septate fungi in an arid grassland
	Ndinga-Muniania, Cedric; Mueller, Rebecca C.; Kuske, Cheryl R.; Porras-Alfaro, Andrea
通讯作者	Porras-Alfaro, A (corresponding author), Western Illinois Univ, Dept Biol Sci, Macomb, IL 61455 USA. ; Porras-Alfaro, A (corresponding author), Western Illinois Univ, Inst Environm Studies, Macomb, IL 61455 USA. ; Porras-Alfaro, A (corresponding author), Natl Sci Fdn, Div Environm Biol, Alexandria, VA 22314 USA.
来源期刊	MYCOLOGIA
ISSN	0027-5514
EISSN	1557-2536
出版年	2021
英文摘要	High temperatures and extended drought in temperate and tropical arid ecosystems promote the colonization of diverse microenvironments by dark septate fungi (DSF). These fungi contribute to soil nutrient cycling, soil stabilization, and plant survival, but the roles of individual DSF species, their distributions, and their community diversity are poorly understood. The objective of this study was to evaluate the distribution, seasonal variation, and potential roles of DSF on plant growth. We collected biocrust (lichen-, moss-, and cyanobacterium-dominated biocrusts) soils at different depths and rhizosphere soils from two grasses, Bromus tectorum and Pleuraphis jamesii, in an arid grassland near Moab, Utah, USA. Seasonal variation of DSF was evaluated using culture-based approaches and compared with fungal community profiles from next-generation sequencing (NGS). Culturing showed that DSF were 30% more abundant in biocrusts compared with the focal rhizospheres. The abundance of DSF varied seasonally in belowground samples (rhizosphere and below-biocrust), with a significant increase during the summer months. Pleosporales was the dominant order (35%) in both biocrust and rhizosphere soils out of 817 isolated fungi. Dominant DSF genera in culture included Alternaria, Preussia, Cladosporium, Phoma, and an unknown Pleosporales. Similar results were observed in biocrust and rhizosphere soils NGS. Further, seed germination experiments using dominant taxa were conducted to determine their potential roles on germination and seedling growth using maize as a model plant. Cladosporium and unknown Pleosporales isolates showed plant growth-promoting ability. The variation in abundance of DSF, their differential occurrence in different microenvironments, and their ability to grow in a xerotolerant medium reflect adaptations to summer environmental conditions and to changes in the abundance of organic matter, as well as a potential increase in plant investment in these fungi when heat and drought stresses are more severe.
英文关键词	Biocrusts Cladosporium drylands endophytes plant growth Pleosporales
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000710029900001
WOS关键词	BIOLOGICAL SOIL CRUSTS ; INTERNAL TRANSCRIBED SPACER ; PLANT-GROWTH ; ENDOPHYTIC FUNGI ; TEMPERATURE RESPONSES ; TEMPORAL PATTERNS ; LARGE-SUBUNIT ; COMMUNITIES ; DIVERSITY ; DESERT
WOS类目	Mycology
WOS研究方向	Mycology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364205
作者单位	[Ndinga-Muniania, Cedric; Porras-Alfaro, Andrea] Western Illinois Univ, Dept Biol Sci, Macomb, IL 61455 USA; [Ndinga-Muniania, Cedric; Porras-Alfaro, Andrea] Western Illinois Univ, Inst Environm Studies, Macomb, IL 61455 USA; [Ndinga-Muniania, Cedric] Univ Minnesota Twin Cities, Dept Plant & Microbial Biol, St Paul, MN 55108 USA; [Mueller, Rebecca C.] Montana State Univ, Ctr Biofilm Engn, Bozeman, MT 59717 USA; [Kuske, Cheryl R.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA; [Porras-Alfaro, Andrea] Natl Sci Fdn, Div Environm Biol, Alexandria, VA 22314 USA
推荐引用方式 GB/T 7714	Ndinga-Muniania, Cedric,Mueller, Rebecca C.,Kuske, Cheryl R.,et al. Seasonal variation and potential roles of dark septate fungi in an arid grassland[J],2021.
APA	Ndinga-Muniania, Cedric,Mueller, Rebecca C.,Kuske, Cheryl R.,&Porras-Alfaro, Andrea.(2021).Seasonal variation and potential roles of dark septate fungi in an arid grassland.MYCOLOGIA.
MLA	Ndinga-Muniania, Cedric,et al."Seasonal variation and potential roles of dark septate fungi in an arid grassland".MYCOLOGIA (2021).