Cattail, Typha latifolia

Cattail, Typha latifolia 0.5 shoreline colonies severely affected after exposure for 32 days 3... 

Cattail, Typha latifolia, whole Aquatic macrophytes 15-30 DW 8... 

FIGURE 10 Release of C02 by compete photolytic degradation of sterile leachate from leaves of the cattail (Typha latifolia), grown under ambient atmospheric C02 and doubled C02 concentrations, after 1 week of microbial decomposition. 

The presence of brassinosteroids in monocots has also been demonstrated. Typhasterol ( 2-deoxycastasterone ) from cattail ( Typha latifolia ) pollen (35), castasterone and dolichosterone from rice shoots ( Oryza sativa ) (36) and castasterone, typhasterol and teasterone from com (Zea mays ) pollen (37) were identified. 

Typhasterol. Typhasterol and Teasterone are the first tri-hydroxy 6-ketone sterols (2-deoxy-castasterones and its 3-epimer) isolated that show biological activity in the rice lamina joint bending test despite the lack of a hydroxyl group at C-2. Typhasterol was isolated from cattail (Typha latifolia L) pollen (29), and both teasterone and typhasterol were present at 60 and 15 ng respectively per kg fr. wt. of leaves and were isolated from the less polar active fraction obtained from tea leaves (30). The biological activity of these two ketones as tested in the rice test, is about one tenth that of brassinolide (30). Typhasterol has recently been synthesized (31), but its biological activity was not tested. 

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