1 Katerina Dadakova, Department of Biochemistry 1 Plant cell c01_Figure38.JPEG Figures adopted from Buchanan et al., Biochemistry & molecular biology of plants 2 Plant cell c01_Figure1.JPEG 3 Endoplasmic reticulum Plant cell c01_Figure14.JPEG c01_Figure18.JPEG ER tubules 4 Plant cell Golgi apparatus c01_Figure23.JPEG c01_Figure25.JPEG c01_Figure36.JPEG 5 Exocytosis and endocytosis Plant cell The mechanisms for removing the excess membrane from the plasma membrane c01_Figure34.JPEG 6 Vacuoles Plant cell Metabolic roles of vacuoles: •Growth •Storage •Digestion •pH and ionic homeostasis •Defense against microbial pathogens and herbivores •Sequestration of toxic compounds •Pigmentation • c01_Figure38.JPEG 7 The nucleus Plant cell c01_Figure40.JPEG c01_Figure42.JPEG N, nucleus NE, nuclear envelope NU, nucleolus Nuclear pores 8 Peroxisomes Plant cell C, chloroplast P, peroxisome M, mitochondrion c01_Figure45.JPEG 9 Plastids Plant cell c01_Figure47.JPEG Metabolic roles of plastids: •Photosynthesis •Storage •Synthesis of pigments, fatty acids,… •Nitrite and sulfate reduction 10 Plastids Plant cell c01_Figure59.JPEG Amyloplast c01_Figure60.JPEG Leucoplast c01_Figure61.JPEG Chloroplast c01_Figure51.JPEG Etioplasts 11 Mitochondria Plant cell c01_Figure63.JPEG c01_Figure62.JPEG 12 Plant cell 13 The cytoskeleton Plant cell Electron micrograph of a cytoskeletal meshwork from a carrot cell 14 The cytoskeleton Plant cell 15 The cytoskeleton Plant cell 16 The cytoskeleton Plant cell The structure of actin and actin filaments The structure of tubulin and microtubules 17 The cytoskeleton Plant cell Actin filaments in plant epidermis (A) and leaf veins (B). Dim light Bright light 18 Plant cell The cytoskeleton Cortical microtubules Trajectories of motion of cellulose synthase 19 Plant cell Plant cell division Mitosis in plant and animal cells