Nectriaceae species associated to root rot of nursery and young Eucalyptus smithii trees in Uruguay with Ilyonectria charruensis as novel species

Forestry constitutes an important agronomical activity in Uruguay, involving the cultivation of exotic trees mainly for cellulose pulp production with Eucalyptus species. Over the last decade, E. smithii emerged as a species of interest for cellulose pulping. However, its rapid expansion has coincid...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:Plant disease. - 1997. - (2024) vom: 01. Okt.
1. Verfasser: De Benedetti, Franco (VerfasserIn)
Weitere Verfasser: Carbone, María Julia, Mondino, Pedro, Alaniz, Sandra
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Causal Agent Crop Type Etiology Fungi Pathogen detection Subject Areas Trees forest
LEADER 01000caa a22002652c 4500
001 NLM378391739
003 DE-627
005 20250306174544.0
007 cr uuu---uuuuu
008 241001s2024 xx |||||o 00| ||eng c
024 7 |a 10.1094/PDIS-05-24-1052-SR  |2 doi 
028 5 2 |a pubmed25n1260.xml 
035 |a (DE-627)NLM378391739 
035 |a (NLM)39352507 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a De Benedetti, Franco  |e verfasserin  |4 aut 
245 1 0 |a Nectriaceae species associated to root rot of nursery and young Eucalyptus smithii trees in Uruguay with Ilyonectria charruensis as novel species 
264 1 |c 2024 
336 |a Text  |b txt  |2 rdacontent 
337 |a ƒaComputermedien  |b c  |2 rdamedia 
338 |a ƒa Online-Ressource  |b cr  |2 rdacarrier 
500 |a Date Revised 01.10.2024 
500 |a published: Print-Electronic 
500 |a Citation Status Publisher 
520 |a Forestry constitutes an important agronomical activity in Uruguay, involving the cultivation of exotic trees mainly for cellulose pulp production with Eucalyptus species. Over the last decade, E. smithii emerged as a species of interest for cellulose pulping. However, its rapid expansion has coincided with high mortality rates among young trees ranging from 5 to 85%, especially during the first and second summer after plantation. Disease surveys conducted on nine E. smithii commercial fields and three nurseries in southern and eastern Uruguay, yielded a collection of 25 isolates from E. smithii root rot belonging to the Nectriaceae family. In this study, we aimed to identify and characterize these isolates employing phenotypical and molecular studies and to assess their pathogenicity on E. smithii seedlings. Based on morphological features, the Nectriaceae isolates were subdivided into two groups, one resembling Calonectria (n=15) and another Cylindrocarpon-like (n=10). DNA sequences of the partial histone H3 (his3), actine, calmodulin, RNA polymerase II second largest subunit, translation elongation factor 1-alpha (tef1) and β-tubulin (tub2) genes were amplified for Calonectria, as well as partial his3, tef1, tub2 and internal-transcribed spacer and intervening 5.8S (ITS) for the Cylindrocarpon-like group. Based on phylogenetic analysis and phenotypical features three species were identified and characterized; Calonectria pauciramosa (n=15), Dactylonectria novozelandica (n=2), and a novel taxon which we describe here as Ilyonectria charruensis sp. nov. (n=8). The pathogenicity trials revealed that isolates from the three species significantly reduced both shoot and root dry weights of inoculated E. smithii seedlings compared to control plants 
650 4 |a Journal Article 
650 4 |a Causal Agent 
650 4 |a Crop Type 
650 4 |a Etiology 
650 4 |a Fungi 
650 4 |a Pathogen detection 
650 4 |a Subject Areas 
650 4 |a Trees 
650 4 |a forest 
700 1 |a Carbone, María Julia  |e verfasserin  |4 aut 
700 1 |a Mondino, Pedro  |e verfasserin  |4 aut 
700 1 |a Alaniz, Sandra  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Plant disease  |d 1997  |g (2024) vom: 01. Okt.  |w (DE-627)NLM098181742  |x 0191-2917  |7 nnas 
773 1 8 |g year:2024  |g day:01  |g month:10 
856 4 0 |u http://dx.doi.org/10.1094/PDIS-05-24-1052-SR  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_NLM 
912 |a GBV_ILN_350 
951 |a AR 
952 |j 2024  |b 01  |c 10