
%0 Journal Article
%A Doley, D 
%T Chlorosis in a Tree Fern (<I>Cyathea cooperi</I>) Induced by Brief Heat Stress
%J Australian Journal of Botany
%D 1983/02/01
%V 31
%N 1
%P 23-33
%K 
%R https://doi.org/10.1071/BT9830023
%U https://www.publish.csiro.au/paper/BT9830023 
%X Chlorosis occurred in a frond of Cyathea cooperi (Hook. ex F. Muell.) Domin exposed briefly to air temperatures up to 41.2&#176;C during expansion. Pinnule anatomy and cellular organization were generally unaffected, but chloroplast development was impaired. Chlorophyll concentration was reduced to less than 5% of normal, and grana were few in number and attenuated. Stroma thylakoids were almost completely absent, starch grains did not develop and membrane-bound vesicles were numerous and sometimes large. Previously matured fronds were not injured visibly by high temperatures. 
