The following supplementary material is available for this article online:

Text S1 A bibliography of material judged superfluous for the casual reader but essential for the reader who wishes to probe more deeply.

This material is available as part of the online article from:

(This link will take you to the article abstract.)

Please note: Blackwell Publishing are not responsible for the content or functionality of any supplementary materials supplied by the authors. Any queries (other than about missing material) should be directed to the journal at New Phytologist Central Office.

NPH_2323_sm_TextS1.doc53KSupporting info item
NPH_texts1.doc53KSupporting info item