Abstract
SUMMARYStudies on the root nodules of Coriaria nepalensis Wall. using light and electron microscopy revealed that infected cortical cells are enlarged and form a compact kidney‐shaped region with an acentric stele. Within a single cell, the actinomycetous endophyte has branched hyphae and elongate vesicles. Hyphae penetrate the host cell wall in different directions. Inside the host ceil, the hyphae are located in the peripheral region of the cytoplasm near the host cell whilst the vesicles are positioned towards the centre of the cell around the central vacuole. No septa formation was observed in the microsymbiont vesicles. Host cell mitochondria were aggregated near the hyphal/vesicular junction of the endophyte. In situ hybridization studies demonstrated that the nifH transcripts are unequally distributed over the infected cortical cells. In infected cells, nifH mRNA was located in the region occupied by the elongate vesicles of the endophyte near the host cell central vacuole. The results indicate that the elongate vesicles of the nodule endophyte of C. nepalensis are functionally identical to the spherical vesicles of the nodule endophyte of Alnus.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.