Production of Plant-Associated Volatiles by Select Model and Industrially Important Streptomyces spp.

Abstract

The Streptomyces produce a great diversity of specialized metabolites, including highly volatile compounds with potential biological activities. Volatile organic compounds (VOCs) produced by nine Streptomyces spp., some of which are of industrial importance, were collected and identified using gas chromatography–mass spectrometry (GC-MS). Biosynthetic gene clusters (BGCs) present in the genomes of the respective Streptomyces spp. were also predicted to match them with the VOCs detected. Overall, 33 specific VOCs were identified, of which the production of 16 has not been previously reported in the Streptomyces. Among chemical classes, the most abundant VOCs were terpenes, which is consistent with predicted biosynthetic capabilities. In addition, 27 of the identified VOCs were plant-associated, demonstrating that some Streptomyces spp. can also produce such molecules. It is possible that some of the VOCs detected in the current study have roles in the interaction of Streptomyces with plants and other higher organisms, which might provide opportunities for their application in agriculture or industry.

Soil Microbiome Manipulation Gives New Insights in Plant Disease-Suppressive Soils from the Perspective of a Circular Economy: A Critical Review

“…Besides antibiotics, Streptomyces spp. produce VOCs reducing the severity of plant diseases, causing morphological abnormalities in different fungal pathogens [215,216]. Species of Streptomyces that were found to be antagonistic to R. solani can produce more than 10,000 secondary metabolites, including antibiotics and VOCs [217].…”

“…Streptomyces spp. can produce butanone (methyl vinyl ketone) and dimethyl disulphide, which inhibit the spore germination of Cladosporium cladosporioides [216]. Streptomyces albus can produce anisole that acts against Sclerotinia sclerotiorum and F. oxysporum [220].…”

Enfermedad del desgaste en praderas de Thalassia testudinum (Hydrocharitaceae) y su relación con el perfil metabólico

“…Lo anterior se sustenta en el hecho que, luego del análisis multivariado contrastante entre plantas sanas y enfermas, se observó que el número de azúcares fue menor en plantas infectadas, favoreciendo la acumulación particular de glucosa. En cuanto a las pentanonas, éstas no han sido reportadas para T. testudinum, pero si se ha reportado su presencia en plantas (Cheng et al, 2020;Vivaldo et al, 2017) y macroalgas como oxilipinas volátiles de cadena corta, como las pent-3-en-2-ona y las hidroxipentanonas, cuya función es alertar a través del medio acuático de la presencia de patógenos (Chen et al, 2019), lo que apoyaría la alta abundancia relativa detectada de la hidroxi-2-isopentanona en hojas de praderas infectadas en las tres áreas.…”

Plant–Microbe Interaction: Aboveground to Belowground, from the Good to the Bad

“…Some of these signals (VOCs, for example: alcohols, alkanes, ketones, terpenoids, etc.) operate as communicators within the microbial communities in the rhizosphere [ 25 , 131 , 165 ]. These compounds promote several functions, such as disease inhibition, nutrient acquisition, improved growth and development, mineralization, and other processes.…”