Somrudee Nilthong

• Mae Fah Luang University

Clavicipitoid fungi, significant insect pathogens within the Ascomycetes, represent a diverse and complex group that includes genera such as Metarhizium, known for their biocontrol properties. These fungi are highly diverse yet frequently overlooked, resulting in many species remaining undiscovered and undescribed. This study unveils two notable fi...

Saprobic fungi are known for their critical role in decomposition and nutrient cycling. The study of saprobic fungi is equally important, as it helps in understanding their ecological roles and identifying their hidden diversity. This study focused on saprobic fungi on Aquilaria, which is poorly studied compared to economically important hosts like...

This study is based on three terrestrial saprobic fungi associated with Aquilaria in Guangdong and Yunnan provinces in China. All isolated species matched with generic concepts of Melomastia. Detailed morphological characteristics and combined multigene phylogeny of LSU, SSU, and TEF revealed that the new isolates represent two new species (Melomas...

Brown planthopper (BPH) is the most problematic insect in rice cultivation, as it decreases crop yields. In this study, 143 upland rice varieties were genotyped for five essential Bph resistance genes: bph2, Bph3, Bph14, Bph15, and Bph17. The gene frequencies of the five Bph resistance genes varied from 33.57% to 61.54%. The 139 varieties contained...

Rice blast disease caused by the fungus Pyricularia oryzae is one of the most devastating diseases of rice (Oryza sativa L.). Therefore, the use of resistant rice varieties would be the most effective way to control this disease. Based on disease evaluation, upland rice varieties were classified into two groups: resistant (35%) and moderately resis...

Rice blast is the most devastating disease of rice (Oryza sativa L.) causing yield losses worldwide. It had been shown that partially resistant rice varieties are a useful way to control rice blast disease. Landraces are a rich source of traits governing resistance/ tolerance to biotic and abiotic stresses. Therefore, 94 upland rice varieties were...

Upland rice (Oryza sativa L.) is precious genetic resource containing some valuable alleles not common in modern germplasm. In this study, genetic diversity and population structure of 98 upland rice varieties from northern part of Thailand were examined using nine simple sequence repeat markers. Number of alleles detected by the above primers was...

This study was conducted to determine the incidence, diversity and distribution of viruses infecting pepper ( Capsicum spp.) in the central, northern and northeastern parts of Thailand. During a survey in 2016 - 2019, a total of 2,149 leaf samples from symptomatic and asymptomatic peppers were collected randomly from farmer’s fields, and preliminar...

During a survey of fungicolous fungi, a novel taxon from the surface of stroma of an unidentified Xylaria species was collected. Phylogenetic analyses showed that this taxon clustered with Calcarisporium sp. and C. arbuscula isolates, but was resolved as a distinct species. A detailed morphological examination coupled with phylogenetic analysis ind...

Neopestalotiopsis species are associated with a post harvest fruit rot and trunk disease of grapevines in China. A new species, N. vitis was isolated from the grape leaf spot in Guangxi Province, China. Initially, small circular, slightly sunken, necrotic spots, developed on the leaf surface, mainly at the inter-vein regions. The spots enlarged rap...

The family Elsinoaceae is a relatively poorly known, but important family within Myriangiales, Dothideomycetes. The genera of this family are mostly plant pathogens and causes disease, such as apple and grape scab. In this paper we revisit the family by examining generic types and analysis of molecular sequence data available in GenBank. Elsinoacea...

Pestalotiopsis-like fungi are an important plant pathogenic genus causing postharvest fruit rot and trunk diseases in grapevine in many countries. Pestalotiopsis-like fungi diseases were studied in vineyards in nine provinces across China. Multi-gene (ITS, β-tubulin and tef1) analysis coupled with morphology showed that a Neopestalotiopsis sp. and...

Amplified fragment length polymorphism (AFLP) analysis was used to study the genetic relationship among 25 soybean varieties from Japan and Thailand. Seventeen AFLP primer pairs produced 317 polymorphic (44.90%) and 389 (55.10%) monomorphic AFLP fragments. The polymorphic information content (PIC) among varieties varied from 0.0357 (E-AAC/M-CAT) to...

Grain polyphenol oxidase (PPO) activity can cause discoloration of wheat (Triticum aestivum L.) food products. Five crosses (PI 117635/Antelope; Fielder/NW03681; Fielder/Antelope; NW07OR1070/Antelope; NW07OR1066/OR2050272H) were selected to study the genetic inheritance of PPO activity. STS markers, PPO18, PPO29 and STS01, were used to identify lin...

Polyphenol oxidase (PPO) in grain plays a major role in time-dependent discoloration of wheat (Triticum aestivum L.) products, especially fresh noodles. Breeding wheat cultivars with low or nil PPO activity can reduce undesirable product darkening. The low PPO line PI 117635 was crossed to two low PPO wheats, IDO580 and ‘IDO377s’, to determine whet...