An investigation into oomycete diversity in rice paddies of Fars Province in Iran led to the identification of two new () species as and The identification was based on morphological and physiological features as well as on the phylogenetic analysis of nuclear (ITS and ) and mitochondrial (1 and 2) loci using Bayesian inference and Maximum Likelihood. The present paper formally describes these two new species and defines their phylogenetic relationships with other congeneric species. According to multiple gene genealogy analysis, was grouped with other species of (formerly, clade G of ) and was closely related to both and the recently described The second species, designated , was grouped with other species of (formerly, clade B of ) and, according to the phylogenetic analysis, shared an ancestor with The production of globose hyphal swellings was a major characteristic of , which did not produce vesicles and zoospores.
View Article and Find Full Text PDFPermafrost, a vast storage reservoir of frozen organic matter, is rapidly thawing due to climate change, releasing previously preserved carbon into the environment. This phenomenon has significant consequences for microbial communities, including fungi, inhabiting permafrost-associated regions. In this review, we delve into the intricate interplay between permafrost thawing and fungal diversity and functionality with an emphasis on thermokarst lakes.
View Article and Find Full Text PDFThis study aimed to evaluate the effectiveness of essential oil extracted from celery () seeds (CSEO) for the control of powdery mildew of cucumber () incited by and to investigate the metabolic and genetic defense mechanisms triggered by the treatment with this essential oil in cucumber seedlings. The main compounds in the CSEO as determined by gas chromatography-mass spectrometry (GC-MS) analysis were d-limonene, 3-butyl phthalide, β-selinene, and mandelic acid. The treatment with CSEO led to an increase in the content of both chlorophyll and phenolic/flavonoid compounds in cucumber leaves.
View Article and Find Full Text PDFContributions of fungal and oomycete communities to freshwater carbon cycling have received increasing attention in the past years. It has been shown that fungi and oomycetes constitute key players in the organic matter cycling of freshwater ecosystems. Therefore, studying their interactions with dissolved organic matter is crucial for understanding the aquatic carbon cycle.
View Article and Find Full Text PDFis a major wheat pathogen worldwide. Although Iran is within the Fertile Crescent, which is supposed to be the center of origin of both wheat and , the knowledge of the genetic variability of local populations of this basidiomycete is limited. We analyzed 12 inter simple sequence repeats (ISSRs) and 18 simple sequence repeats (SSRs) of 175 isolates sampled between 2010 and 2017 from wheat and other in 14 provinces of Iran.
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