Minimum transcriptome requirement for genome annotation

[gen2prot]

Hi,

I would like to know if there is any information available on the minimum number of transcriptomes required to get a genome annotation that predicts 90% of the genes. For example, If you are building a genome annotation (specifically for gene) for a new species, and would like to generate a reasonably comprehensive annotation in that species (90% of the genes and gene models captured), then how many transcriptomes would help you?

I am thinking 3 tissues x 3 developmental stages, so 9 transcriptomes. Does anyone have a different suggestion on how to approach this? or a publication you can point me to?

Thanks
Abhijit

[luc]

For a plant or an animal?