Sagittaria sagittifolia

Sagittaria sagittifolia (arrowhead) (Alismataceae) Arrowhead Pis API-A API-B (150 aa 16 kDa 6 Cys 3 S-S double-headed Pis) Chymotrypsin, Kallikrein, Trypsin [562- 566]... 

A variety of other kinds of plant serine PIPs have been isolated [562-573] (Table 18), namely the arrowhead PIPs [562-566] and some representatives of some major classes of plant antifungal proteins, namely some defensins [121, 567, 568], some lipid transfer proteins (LTPs) [121, 169, 569, 570] and some napins [121, 571-573] (Table 18). The Sagittaria sagittifolia (arrowhead) protease inhibitors A and B (API-A and API-B)... 

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

The phenotype (visible configuration) of the marsh plant Sagittaria sagittifolia depends on its environment. As shown in Figure 5.3.7, its leaf forms depend upon the degree to which it is submerged. Nowhere is there a better illustration of the interaction of environment with genetic expression than this. 

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