Typha latifolia

In the wetlands of Idaho, the formation of an Fe(III) precipitate (plaque) on the surface of aquatic plant roots (Typha latifolia, cat tail and Phalaris arundinacea, reed canary grass) may provide a means of attenuation and external exclusion of metals and trace elements (Hansel et al, 2002). Iron oxides were predominantly ferrihydrite with lesser amounts of goethite and minor levels of siderite and lepidocrocite. Both spatial and temporal correlations between As and Fe on the root surfaces were observed and arsenic existed as arsenate-iron hydroxide complexes (82%). 

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

The plant species Phragmites australis and Typha latifolia were obtained from surface-sterilized seeds whereas Carex gracillis and Juncus glaucus were initiated from apical meristem. The seeds were treated by a... 

Ye ZH, Baker AIM, Wong MH, Willis AJ. 1997a. Copper and nickel uptake, accumulation and tolerance in Typha latifolia with and without iron plaque on the root surface. New Phytologist 136 481-488. 

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

Xu S, Leri AC, Myneni SCB, Jeffe PR (2004) Uptake of Bromide by Two Wetland Plants (Typha latifolia L. and Phragmites australis (Cav.) Trin. ex Steud). Environ Sci Technol 38 5642... 

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. 

Barlocher, F. Biddiscombe, N. R. (1996). Geratology and decomposition of Typha latifolia and Lythrum salicaria in a freshwater marsh. Archiv fur Hydrobiologie, 136, 309-25. 

Welsch, M. Yavitt, J. B. (2003). Early stages of decay of Lythrum salicaria L. and Typha latifolia L. in a standing-dead position. Aquatic Botany, 75, 45-57. 

Yavitt, J. B. (1997). Methane and carbon dioxide dynamics in Typha latifolia (L.) wetlands in central New York State. Wetlands, 17, 394 06. 

Fig. 96.—Various forms of pollen grains. Pollen from Typha latifolia ( ), Zea mays (B), Ambrosia elalior (C), Lilium philadelphicum (D), Pinus (E), Ranunculus hulhosus (F), Carpinus caroliniana (GX Althcea rosea H), Oenothera biennis, (/). All highly magnified. Drawing by Hogstad.

In another report. Hansel et al. (2002) studied Fe plaque associated with the rhizosphere of Typha latifolia and Phalaris arundinacea from a mine waste-contaminated site that was high in As. For both plants, the Fe and As concentrations associated with roots were approximately 10-fold concentrated on roots relative to their abundances in the bulk soil. XRF revealed that Fe plaque consisted primarily of ferrihydrite but also had appreciable levels of goethite and siderite T. latifolia also had a significant amount of lepidocrocite. Their analysis suggested that As was sequestered fairly homogeneously within the Fe plaque. A XANES analysis indicated that approximately 80% of the As was As(V) and 20% As(III). Blute et al. (2004) reported similar ratios for As(V) and As(III)... 

Buitink, J., Walters, C., Hoekstra, F.A., and Crane, J. Storage behavior of Typha latifolia L. pollen at low water contents interpretation on the basis of water activity and glass concepts. Physiol. Plant., 103,145,1998. 

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. 

C., Heavy metal tolerance in Typha latifolia without the evolution of tolerant races. Ecology, 55, 1163-1165, 1974. 

Fig. 4.20. Some plants from the emerging-vegetation band. 1 — Typha latifolia (bulrush), 2 — Phragmites communis (reed), 3 — Sagittaria sagittifolia, 4 — Sparganium... 

Taylor GJ, Crowder AA (1984) Formation and morphology of an iron plaque on the roots of Typha latifolia... 

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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