Department of Botany, Faculty of Science, Mansoura University, El-Mansoura, 35516, Egypt.
Published: August 2007
AI Article Synopsis
Article Abstract
Rice brown spot, caused by Bipolaris oryzae, can be a serious disease causing a considerable yield loss. Trichoderma harzianum is an effective biocontrol agent for a number of plant fungal diseases. Thus, this research was carried out to investigate the mechanisms of action by which T. harzianum antagonizes Bipolaris oryzae in vitro, and the efficacy of spray application of a spore suspension of T. harzianum for control of rice brown spot disease under field conditions. In vitro, the antagonistic behavior of T. harzianum resulted in the overgrowth of B. oryzae by T. harzianum, while the antifungal metabolites of T. harzianum completely prevented the linear growth of B. oryzae. Light and scanning electron microscope (SEM) observations showed no evidence that mycoparasitism contributed to the aggressive nature of the tested isolate of T. harzianum against B. oryzae. Under field conditions, spraying of a spore suspension of T. harzianum at 10(8)spore ml(-1) significantly reduced the disease severity (DS) and disease incidence (DI) on the plant leaves, and also significantly increased the grain yield, total grain carbohydrate, and protein, and led to a significant increase in the total photosynthetic pigments (chlorophyll a and b and carotenoids) in rice leaves.
National and Local Joint Engineering Research Center for Biomanufacturing of Choral Chemicals, Zhejiang University of Technology, Hangzhou, People's Republic of China.
C14-functionalized steroids enabled diverse biological activities in anti-gonadotropin and anticancer therapy. However, access to C14-functionalized steroids was impeded by the deficiency of chemical synthetic methods. Recently, several membrane-bound fungal cytochrome P450s (CYPs) have been identified with steroid C14α-hydroxylation activity.
Kunze Wiltshire 1933 is a fungus that causes leaf blotch disease in plants, and the study focused on assembling its mitochondrial genome from isolate AT-1224.
The mitochondrial genome has a size of 57,475 bp, featuring 12 coding genes, 15 hypothetical proteins, 34 tRNA genes, and 2 rRNA genes, along with various repetitive sequences.
Phylogenetic analysis indicated close relationships with two species and placed it in a sister clade with six other species, providing important insights for future identification and evolutionary studies related to this fungus in apple orchards.
National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Hubei Key Laboratory of Plant Pathology, The Center of Crop Nanobiotechnology, Huazhong Agricultural University, Wuhan, China.
Brown spot disease of rice caused by results in severe yield losses. A high-quality genome was assembled using Nanopore sequencing data, resulting in a 36-Mb nuclear genome with 19 contigs and a mitogenome. This assembly provides valuable genetic resources for investigations of rice- interactions.
Programa de Pós-Graduação em Biotecnologia, Laboratório Bioinformática e Proteômica (BioPro Lab), Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Campus Universitário, s/n - Prédio 19, Pelotas, RS, 96010-900, Brazil.
The search for less harmful, ecologically efficient, more specific, and natural alternatives for the control of pathogens is essential. Bauhinia variegata lectin (BvL) is a protein that has numerous biological activities, including antifungal. The present study examines the potential in vitro of B.
Unlabelled: Brown spot (BS) disease causes significant losses to rice productivity. In this study, a roving survey in the Karnataka state of India revealed a wider distribution of BS with a percent disease index range of 20.56-50.
