Histone H4K8hib modification promotes gene expression and regulates rice immunity.

This study uncovers the role of H4K8hib as an active epigenetic mark in rice that positively correlates with gene expression and enhances immune responses. Furthermore, HDA705 was identified as the key enzyme regulating H4K8hib. Mutation of HDA705 led to hyper-H4K8hib, which in turn activated the expression of defense-related genes and enhanced rice resistance to pathogens.

Development of Recombinase Polymerase Amplification Combined with Lateral Flow Detection Assay for Rapid and Visual Detection of in Tobacco.

Bacterial wilt caused by is a serious soilborne disease that results in severe losses to tobacco () production in China. In this study, a novel RPA-LFD assay for the rapid visual detection of was established using recombinase polymerase amplification (RPA) and lateral-flow dipstick (LFD). The RPA-LFD assay was performed at 37°C in 30 min without complex equipment.

First report of Meloidogyne graminicola on rice in Anhui province, China.

Meloidogyne graminicola, a devastating plant pathogen of rice (Oryza sativa), is considered to a severe constraint to productivity in rice-growing areas (Zhan et al., 2018). In April 2020, irrigated paddy rice field in Qianshan City, Anhui Province, China, showed symptoms with stunting, thinning, chlorosis, and typical hook-shaped root tips.

Versatile glycoside hydrolase family 18 chitinases for fungi ingestion and reproduction in the pinewood nematode Bursaphelenchus xylophilus.

The glycoside hydrolase family 18 (GH18) of chitinases is a gene family widely expressed in archaes, prokaryotes and eukaryotes, and hydrolyzes the β-1,4-linkages in chitin. The pinewood nematode Bursaphelenchus xylophilus is one of the organisms that produces GH18 chitinases. Notably, B.

Isolation and characterization of a fatty acid- and retinoid-binding protein from the cereal cyst nematode Heterodera avenae.

A gene encoding fatty acid- and retinoid-binding protein was isolated from the cereal cyst nematode Heterodera avenae and the biochemical function of the protein that it encodes was analysed. The full-length cDNA of the Ha-far-1 gene is 827 bp long and includes a 22- nucleotide trans-spliced leader sequence (SL1) at its 5-end. The genomic clone of Ha-far-1 consists of eight exons separated by seven introns, which range in size from 48 to 186 bp.

Exposure to double-stranded RNA mediated by tobacco rattle virus leads to transcription up-regulation of effector gene Mi-vap-2 from Meloidogyne incognita and promotion of pathogenicity in progeny.

Meloidogyne spp. are economically important plant parasites and cause enormous damage to agriculture world-wide. These nematodes use secreted effectors which modify host cells, allowing them to obtain the nutrients required for growth and development.