Today, a regular scientific seminar was held at the Institute of Molecular Biology and Biotechnologies of ANAS. Zibeyda Hajiyeva, a junior researcher at the Laboratory of Cell Membrane Systems, made a presentation on "The role of plasmodesmas in the leaves of C4 plants." The rapporteur noted that there were many hypotheses in the past about the role of plasmodesma in intercellular communication and transport in plants. Z. Hajiyeva informed the seminar participants about the structure of plasmodesmas, their formation, C4 plants and plasmodesmas in them. He noted that plasmodesmas are involved in intercellular communication, that is, they allow molecules to pass directly from cell to cell. Plasmodesma was found to be a transporter between neighboring plant cells. They allow molecules weighing less than about 800 daltons to pass through. Plasmodesmas were shown to carry proteins, small RNAs, messenger RNAs, viroids, and viral genomes from cell to cell. There was a wide exchange of views on the report, and numerous questions were answered.