First report of Alternaria leaf spot caused by Alternaria alternata (Fries.) Kiessler on Sonchus oleraceus L. and Convolvulus arvensis L. in Algeria
JOURNAL OF PHYTOPATHOLOGY
Authors: Abdessemed, Nesma; Kerroum, Ali; Bahet, Youssef Anis; Talbi, Nacera; Zermane, Nadjia
Abstract
Alternaria leaf spot caused by Alternaria alternata (Fries.) Kiessler was found on sow thistle (Sonchus oleraceus L.) and field bindweed (Convolvulus arvensis L.) in the experimental station of ENSA (Ecole Nationale Superieure d'Agronomie) in Algiers, Algeria, during the winter of 2016. Necrotic spots in the form of concentric circles were observed on the leaves of both weeds with disease incidence of approximately 70% and disease severity ranging from 50% to 70%. Fungi were isolated from the infected leaves and identified as A. alternata, based on morphological and molecular analyses (using genetic marker internal transcribed spacer, ITS of rDNA). Pathogenicity tests confirmed that A. alternata is the causing agent of leaf spot disease of sow thistle and field bindweed in accordance with the original symptoms. To the best of our knowledge, this is the first report of sow thistle and field bindweed naturally infected by A. alternata in Algeria.
GWAS of 165,084 Japanese individuals identified nine loci associated with dietary habits
NATURE HUMAN BEHAVIOUR
Authors: Matoba, Nana; Akiyama, Masato; Ishigaki, Kazuyoshi; Kanai, Masahiro; Takahashi, Atsushi; Momozawa, Yukihide; Ikegawa, Shiro; Ikeda, Masashi; Iwata, Nakao; Hirata, Makoto; Matsuda, Koichi; Murakami, Yoshinori; Kubo, Michiaki; Kamatani, Yoichiro; Okada, Yukinori
Abstract
Matoba et al. performed GWAS on 13 dietary habits in Japanese individuals, identifying ten new associations in eight traits and five dietary-trait-associated loci with pleiotropic effects on multiple human disease and clinical measurements. Dietary habits are important factors in our lifestyle, and confer both susceptibility to and protection from a variety of human diseases. We performed genome-wide association studies for 13 dietary habits including consumption of alcohol (ever versus never drinkers and drinks per week), beverages (coffee, green tea and milk) and foods (yoghurt, cheese, natto, tofu, fish, small whole fish, vegetables and meat) in Japanese individuals (n = 58,610-165,084) collected by BioBank Japan, the nationwide hospital-based genome cohort. Significant associations were found in nine genetic loci (MCL1-ENSA, GCKR, AGR3-AHR, ADH1B, ALDH1B1, ALDH1A1, ALDH2, CYP1A2-CSK and ADORA2A-AS1) for 13 dietary traits (P < 3.8 x 10(-9)). Of these, ten associations between five loci and eight traits were new findings. Furthermore, a phenome-wide association study revealed that five of the dietary trait-associated loci have pleiotropic effects on multiple human complex diseases and clinical measurements. Our findings provide new insight into the genetics of habitual consumption.