Plant Biochemistry

[unknown at dl.ac.uk]

We are looking for a suitable text for a graduate level Plant Biochemistry
course.  In the past we have used "Introduction to Plant Biochemistry" by
Goodwin and Mercer.  Can anyone recommend a more updated treatment of this
topic that is rigorous and sufficiently advanced for a graduate student 
audience?  If not already available do you know of a text that is being prepared?

All replies are much appreciated.

charlie guy