Disappearance of Guard Cell Chloroplasts in Ultraviolet-Irradiated Leaves

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Science  28 Aug 1959:
Vol. 130, Issue 3374, pp. 500-501
DOI: 10.1126/science.130.3374.500-a


Ultraviolet irradiation of kidney-bean leaves results in the disappearance of chloroplasts from guard cells. The evidence indicates that ultraviolet irradiation causes plastid breakdown indirectly through an effect on guard-cell metabolism.