This review grewout of an interest in devel-opmental phenomena in certain filamentous blue-
green algae (823-825). In these algae, vegetative cells can differentiate into hetero-cysts …

In the first part (Part A) of this volume on transport, there was an emphasis on the processes
occurring at the membranes bounding the cells. It was convenient to distinguish active and …

When a chlorophyll (Chl) molecule, excited by light, returns from its first singlet excited state
to its ground state, there is light emission within a few nanoseconds. This emission is red in …

One way to understand a normal system is to alter it by dissecting out its component parts
individually and then to examine its operation in the absence of a given part. Such an ap …

The formation of active O2 evolving centers following addition of Mn2+ to Mn deficient
Anacystis nidulans cells yielded an estimate of 6 to 12 Mn atoms associated with each O2 …

The effect of illumination on the absorption of K+ by leaf tissue of Zea mays was
investigated. The rate of K+ absorption was enhanced by exposure of slices of corn leaf …

The respiration and photosynthesis requirement for induction and maintenance of nitrate
reductase activity was determined on leaves of Hordeum vulgare L. In this induction …

The isolation of a virus that infects the blue-green algae (Safferman and Morris, 1963, 1964,
a, b) was looked upon with great interest by researchers in a number of fields. The driving …

As shown in the preceding chapters of this volume, the process of photophosphorylation
(PP) is defined as light-induced synthesis of ATP from ADP and inorganic phosphate (P i): 1 …

Anaerobiosis depresses the light-and bicarbonate-saturated rates of O2 evolution in intact
spinach (Spinacia oleracea) chloroplasts by as much as 3-fold from those observed under …