Endorhizal Fungal Association and Colonization Patterns in Solanaceae

Abstract

Abstract. The Solanaceae family includes plants of high economic and medicinal value. Information on endorhizal associations in Solanaceae is limited. We investigated arbuscular mycorrhizal (AM) and dark septate endophyte (DSE) fungal associations in 20 solanaceous plant species (7 genera) taken from one or more sites, measuring the percentage of root length colonized in plants having different AM and DSE fungal structures. Root samples of all the plant species examined had AM fungal structures, and DSE fungal colonization was found in 80% of the plant species. Total AM and DSE fungal colonization and root length of plants with different fungal structures varied significantly between species. Significant between-site variation was found for root length in plants with fungal structures in Lycopersicon esculentum Mill., Capsicum annuum L., Datura metel L., Solanum melongena L., S. nigrum L., S. trilobatum L. and S. torvum SW. AM morphology was predominantly intermediate-type (60%), followed by Paris-type (30%). Solanum melongena and S. nigrum at different sites had Paris-type or intermediate AM morphology. DSE fungal colonization also exhibited significant between-site variation in Capsicum frutescens, C. annum, Datura metel, Solanum melongena, S. trilobatum and S. nigrum. We found a significant negative correlation between AM and DSE fungal colonization.

Effects of Dark Septate Endophytes on the Performance and Soil Microbia of Lycium ruthenicum Under Drought Stress

“…Dark septate endophytes (DSE) belong to the Ascomycetes and commonly colonize the roots of both mycorrhizal and non-mycorrhizal plants (Jumpponen and Trappe, 1998 ; Addy et al, 2005 ). These endophytes are characterized by melanized septate hyphae and microsclerotia (Mandyam et al, 2010 ; Muthukumar and Sathya, 2017 ). Studies have shown that most plants can form complex and changeable symbiotic relationships with fungi, and symbiotic fungi help to enhance the adaptability of plants to drought stress (Berthelot et al, 2017 ).…”

Dark Septate Root Endophytic Fungus Nectria haematococca Improves Tomato Growth Under Water Limiting Conditions

“…The test plant tomato (Solanum lycopersicum L.) used in the present study is not only a widely used vegetable in the world; it is also a popular research material and a model plant in many biological studies. Previous studies do indicate that roots of tomato can be simultaneously colonized by both AM and DSE fungi [8]. As root colonizing DSE fungi are known to improve plant growth and stress tolerance in plants we investigated the effect of the fungal endophyte N. haematococca on the growth of tomato plants subjected to drought stress together with the status of natural association with AM fungi.…”

Dinámica estacional de micorrizas arbusculares y hongos septados endofíticos oscuros en asociación con raíces de Solanum elaeagnifolium Cav.

“…La formación de un apresorio en la superficie de la célula de trompillo sugiere que es la forma de entrada o infección de los HOS tal como lo hacen los HMA. Muthukumar & Sathya (2017) observaron esta estructura como una forma común de colonización 'peg' de los HMA (Gigasporaceae) penetrando las células rizodermales de Tabla 3. Condiciones ambientales al momento de la toma de muestra de raíces de S. elaeagnifolium en la zona urbana en las cuatro temporadas de invierno, primavera, verano y otoño del 2014 en Ciudad Juárez, Chihuahua, México.…”

“…son asociadas con la colo nización asintomática de HOS (Barrow & Osuna 2002, Lucero et al 2008, Lucero et al 2011. Muthukumar & Sathya (2017), fueron los primeros en reportar que S. elaeagnifolium era una especie micotrófica. Ellos observaron que las raíces presentaban solo una colonización micorrízica tipo 'París', pero con la ausencia de la típica micorriza tipo 'Arum' en diferentes sitios de ecosistemas tropicales.…”

“…El trompillo presenta alcaloides tóxicos para el ganado (Boyd et al 1984, Chowański et al 2016) y con valores medicinales (Muthukumar & Sathya 2017) como la solasodina usado en las preparaciones anticonceptivos, asma o artritis (Maiti & Mathew 1967). Si el trompillo contiene sustancias tóxicas o medicinales y crece agresivamente en ecosistemas urbanos y agrícolas, entonces: ¿cuáles asociaciones fúngicas están relacionadas con cada etapa de crecimiento del trompillo?…”