干旱区生态环境知识资源中心(Arid): Physiological characterisation of coprophilous fungal isolates that behave as plant root associates

Arid

DOI	10.1071/SR20141
	Physiological characterisation of coprophilous fungal isolates that behave as plant root associates
	Miranda, Victoria; Scervino, Jose Martin; Barros, Johana; Rodriguez, Maria Alejandra; Fracchia, Sebastian
通讯作者	Miranda, V
来源期刊	SOIL RESEARCH
ISSN	1838-675X
EISSN	1838-6768
出版年	2020
卷号	58 期号:8 页码:748-758
英文摘要	Different fungal isolates closely related toZopfiella erostrataandCercophora caudatahave been found to colonise plant root tissues in an asymptomatic way in the Monte Desert biome of La Rioja Province, Argentina. This interaction has been newly discovered, and the role of these fungi in their desert habitat has never been studied in detail. The objective of this study was to evaluate eight fungal isolates by means of specific physiological traits that could have implications for their interaction with the host plant. The selected isolates, four endophytic and four rhizospheric, were characterised for their ability to produce indole acetic acid, solubilise and mineralise phosphorus (P), and utilise different nitrogen sources. In addition, we evaluated organic acid production and phosphatase activities as mechanisms of P recycling. These analyses revealed that most isolates produced indole acetic acid, and that all isolates could solubilise and mineralise P, although to different degrees. Furthermore, the production of organic acids correlated with P solubilisation levels, which may enhance P availability in soils. Nitrogen utilisation was variable among the isolates, without specific patterns concerning the different sources and fungal isolates tested. Our results demonstrated that the fungal isolates had great variability, probably because they complete their teleomorphic phase in their habitats, generating viable meiotic spores, in addition to the active dispersion of these fungi by the underground rodentCtenomysaff.knightiifrom which they were isolated. Although the isolates were variable, the endophytic isolates exhibited improvement in all the P parameters measured. This can be explained by the ability of these isolates to intimately colonise root tissues, while the colonisation by rhizospheric isolates is produced superficially in the rhizoplane. The high occurrence of this interaction, as well as the physiological traits detected, suggest that this kind of fungi could play an important ecological role in the Monte Desert environment, benefiting the establishment and growth of new seedlings in areas occupied by the rodents.
英文关键词	coprophilous fungi desert ecosystem endophytes indole phosphorus solubilisation rhizosphere
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000570296500001
WOS关键词	DARK SEPTATE ENDOPHYTES ; PHOSPHATE SOLUBILIZATION ; HETEROCONIUM-CHAETOSPIRA ; ECTOMYCORRHIZAL FUNGI ; STRUCTURAL FEATURES ; INDOLEACETIC-ACID ; GROWTH ; DIVERSITY ; NITROGEN ; HOST
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326355
作者单位	[Miranda, Victoria; Barros, Johana; Fracchia, Sebastian] UNLAR, SEGEMAR, UNCa, CRILAR CONICE,Ctr Reg Invest Cient & Transferenci, Entre Rios Mendoza S-N, RA-5301 Anillaco La Rioja, Argentina; [Scervino, Jose Martin] CONICET UNC, Dept Botan INIBIOMA, Quintral 1250, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina; [Rodriguez, Maria Alejandra] Univ Buenos Aires, IBBEA, Fac Ciencias Exactas & Nat,CONICET, Lab Microbiol Suelo,Dept Biodiversidad & Biol Exp, Buenos Aires, DF, Argentina; [Fracchia, Sebastian] Univ Nacl Chilecito, Chilecito, La Rioja, Argentina
推荐引用方式 GB/T 7714	Miranda, Victoria,Scervino, Jose Martin,Barros, Johana,et al. Physiological characterisation of coprophilous fungal isolates that behave as plant root associates[J],2020,58(8):748-758.
APA	Miranda, Victoria,Scervino, Jose Martin,Barros, Johana,Rodriguez, Maria Alejandra,&Fracchia, Sebastian.(2020).Physiological characterisation of coprophilous fungal isolates that behave as plant root associates.SOIL RESEARCH,58(8),748-758.
MLA	Miranda, Victoria,et al."Physiological characterisation of coprophilous fungal isolates that behave as plant root associates".SOIL RESEARCH 58.8(2020):748-758.