Table II. Phenotyping of Arabidopsis PAP knockout mutants.

Growth phenotype, Developmental appearance of knockout mutants (Suc, viable only on Suc-supplemented medium); Plastid Structure, plastid morphology in knockout/silenced mutants (t., thylakoids; p., plastoglobuli enrichment); Molecular Phenotype, NEP expression profile of plastid transcript accumulation; Reference, source of phenotypic descriptions; n.d., not described. Classification as “ivory” is based on our own observations.

Subunit	Growth Phenotype	Plastid Structure	Molecular Phenotype	Reference
PAP1	Albino/ivory; Suc	n.d.	n.d.	Myouga et al. (2010)
PAP2	Pale-yellow/green; Suc	Impaired; few t.; p.	NEP	Pfalz et al. (2006)
PAP3	Albino/ivory; Suc	n.d.	n.d.	This work
PAP4	Pale-green; Suc	Impaired; no t.; p.	NEP	Myouga et al. (2008)
PAP5	Albino/ivory; Suc	Impaired; no t.; p.	NEP	Pfalz et al. (2006); Chen et al. (2010)
PAP6	Albino/ivory, Suc	n.d.	n.d.	This work
PAP7	Albino/ivory; Suc	n.d.	n.d.	This work
PAP8	Albino/ivory; Suc	Impaired; no t.; p.	NEP	Pfalz et al. (2006)
PAP9	Pale-green; Suc	Impaired; no t.; p.	NEP	Myouga et al. (2008)
PAP10	Albino/ivory; Suc	Impaired; no t.; p.	NEP	Arsova et al. (2010); Schröter et al., 2010)