Figure 3.

Stromule formation in the context of the nucleus. (A) A graphic depiction plastids/stromules within each “position category” created to demonstrate the relationship of a given plastid to the nucleus. Categories were delineated as follows: 1 (white), plastid does not contact the nucleus and stromule does not face or come into contact with the nucleus; 2 (gray), plastid/stromule does not touch the nucleus, but stromule is facing the nucleus; 3 (dark gray), plastid body is not touching the nucleus, but stromule is in contact; 4 (black), plastid body and stromule are in contact with the nucleus. (B) Graph depicting the % of plastids harboring stromules within each “position category” in small (yellow; n = 432 plastids), medium (green; n = 648 plastids) and large (blue; n = 154 plastids) cells. Gray scale categories match colors exemplified in (A). Category 1 (white) plastids/stromules show no nuclear context, while the other three categories were classified as “stromules within a nuclear context.”