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. 2016 Feb 1;7:30. doi: 10.3389/fpls.2016.00030

FIGURE 6.

FIGURE 6

Formation of male gametes was arrested in SDS::SDS-BARNASE Arabidopsis plants. (A–C) WT anthers showing microsporocytes (microspore mother cells) and surrounding tapetal cells at stage 5 (A), tetrads and tapetal cells at stage 7 (B), and developing pollen grains at stage 9 (C). (D–F) SDS::SDS-BARNASE anthers showing degenerating microsporocytes and precociously vacuolated tapetal cells at stage 5 (D), dead microsporocytes and tapetal cells at stage 7 (E), and a nearly empty anther lobe at stage 9 (only one dead pollen, F). M, microsporocytes (microspore mother cells); DP, developing pollen; T, tapetal cell; and Tds, tetrads.