ABSTRACT: Streptomyces sampsonii is a kind of biocontrol bacterium with antifungal effects, and chitinase one the main substances. To improve further study structure function gene S. sampsonii, we amplified target fragment by PCR, ligated to expression vector pET-32a, introduced resulting plasmid into Escherichia coli BL21 (DE3) induced chitinase. Then, recombinant was purified is-labelled prot...

To successfully survive in plants, endophytes need strategies to avoid being detected by the plant immune system, as the cell walls of endophytes contain easily detectible chitin. It is possible that endophytes "hide" this chitin from the plant immune system by modifying it, or oligomers derived from it, using chitin deacetylases (CDA). To explore this hypothesis, we identified and expressed a ...

Kejadian penyakit gugur daun karet (GDK) Pestalotiopsis sp. yang ditemukan menyerang Sumatera pada tahun 2019 membuat perhatian banyak pihak karena serangan ini mampu menurunkan produktivitas hingga 80%. Berbagai informasi dikumpulkan terkait penyebaran di Indonesia dan teknik pengendalian guna memperoleh pendekatan tepat dalam pengelolaan GDK Tulisan bertujuan mengkonfirmasi keberadaan penyeba...