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A proposed model for male sterility induced by SX-1 in B. napus. ER: endoplasmic reticulum, PE: primexine, Pla: plasma membrane, Te: tectum, Ba: bacula, In: intine, Ne: nexine, Pc: pollen coat (tryphine), Cy: cytoplasm, Vac: vacuole, LBs: lipid bodies, AA: amino acid, Fla.: flavonoids, UN: unknown nutrients, UTPs: unknown transport proteins, PMC: pollen mother cell. Up arrow, up-regulation. Down arrow, down-regulation
