Mitochondrial morphology and distribution in mature and senescent leaves of grapevine plants grown in vitro, expressing β-GFP.

<p>(A) Bi-dimensional GFP-fluorescence image resulted from a projection of laser scanning confocal image sequences, showing long branched structures formed by mitochondria in a mature leaf. (B) Bi-dimensional projection image of senescent leaf in S2 senescence stage showing enlarged, round shape mitochondria (see arrows). Scale bar = 48 µm.