. 2012 Aug 14;63(13):4741–4750. doi: 10.1093/jxb/ers147
© The Author [2012]. Published by Oxford University Press [on behalf of the Society for Experimental Biology]. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com
This paper is available online free of all access charges (see http://jxb.oxfordjournals.org/open_access.html for further details)