Plant Desiccation and Protein Synthesis 1: V. Stability of Poly (A)− and Poly (A)+ RNA during Desiccation and Their Synthesis upon Rehydration in the Desiccation-Tolerant Moss Tortula ruralis and the Intolerant Moss Cratoneuron filicinum

摘要

Upon desiccation of gametophytes of the desiccation-tolerant moss Tortula ruralis preexisting pools of poly(A)− RNA (rRNA) remain inact, regardless of the speed at which desiccation is achieved. Preexisting poly(A)+ RNA pools (mRNA) are unaffected by slow desiccation but are substantially reduced during rapid desiccation. Poly(A)− RNA involved in protein synthesis is also unaffected by desiccation, whereas the levels of polysomal poly(A)+ RNA in rapid- and slow-dried moss closely reflect the state of the protein synthetic complex in these dried samples.