Cover

ON THE COVER: [Benthic unicells plus abandoned cell walls following zoospore release of the new marine, sand‐dwelling genus Chrysoparadoxa australica gen. et sp. nov. (Chrysoparadoxophyceae) photographed with differential interference contrast optics. Two chloroplasts are U‐shaped at the ends of the cells and then split into 2 lobes. Ultrastructure shows the chloroplasts to be surrounded by only 2 membranes, a novel feature within the heterokonts. Photo credit: R Wetherbee. Vol. 55, No. 2, pp. 257–278 ]     

Cover

ON THE COVER: Diverse kelp forests underpin immense biodiversity but are declining from multiple stressors. Coleman and Goold discuss how cutting‐edge technologies such as synthetic biology could provide future solutions to loss. Photo credit: Andrew Green. Vol. 55, No. 4, pp. 745–751     

Cover

Rhodymenia cf. rhizoides in the low intertidal of Gwaii Haanas; a species with a predominantly disjunct distribution between California and northern British Columbia. [Vol. 50, No. 6, pp. 968–974]     

Cover

正Tumour suppressor p53 is activated upon DNA damage stress to promote cell cycle arrest or cell death.An N-terminal truncated p53isoform,zebrafi sh 113p53,is a p53target gene and is strongly induced by DNA damage to inhibit the apoptotic activity of full-length p53.In this issue,Ou et al.report for the fi rst time that endogenous 113p53 and full-length p53 induced by a DNA-damaging drug     

Cover

Lithothamnion glaciale thalli from the west coast of Scotland (photo depth: 6m). Photo credit: Nick Kamenos. [Vol. 51, No. 1, pp. 6–24]     

Cover

Epi‐illuminated light micrograph of freshwater Cladophora bearing clouds of epibiontic bacteria and micro‐eukaryotes such as diatoms. Photo by Lee W. Wilcox. [Vol. 51, No. 3, pp. 408–418]     

Cover

A 2‐cell Fucus serratus embryo showing the normal first asymmetric division perpendicular to the rhizoid‐thallus axis of polarity (courtesy of C. Brownlee and J.H. Bothwell). This division pattern can be disrupted by RNAi‐mediated knockdown of cytoskeletal components. [Vol. 49, No. 5, pp.819–829]     

Cover

Enigmatic molar tooth structure in a dolomitic stromatolite from the approximately 1.4 Ga Belt Supergroup, Glacier National Park. The formation mechanism of these typically Mesoproterozoic structures has long been a mystery, but likely involves the unique geomicrobiological processes of the time. Photo by Carrine Blank. [Vol. 49, No. 6, pp.1040–1055]