Büdel, B/ Lange, OL 1991: Water status of green and blue-green phycobionts in lichen thalli after hydration by water vapor uptake: do they become turgid. - Botanica Acta104(5): 361-366. [RLL List # / Rec.# 1334] Keywords: BLUE-GREEN ALGAE/ HYDRATION/ WATER RELATIONS
Abstract: 12 fig. ["It is known from previous investigations that dry lichens with green algae are able to recover net photosynthesis through rehydration with water vapor, whereas all blue-green lichens tested so-far lack this ability." This study, using critical point drying and SEM to compare the phycobionts of Ramalina maciformis and Peltigera rufescens, indicates that the blue-green phycobionts (Nostoc) do not become rehydrated and turgid without liquid water.]