Trehalase: A New Pollen Enzyme

Abstract

(3,20,29). It is especially common in the dormant stages of several organisms (6) and in organisms that are resistant to storage and desic-

Trehalose Toxicity in Cuscuta reflexa

“…The ability of pollen grains of several plants to germinate in medium containing trehalose was correlated with the presence of trehalase activity (12). The present study has established that growth of higher plants in trehalose is related to the presence of trehalase.…”

“…Reports on the occurrence of trehalose in higher plants (15,23) has been repudiated by Gussin (10) as due to faulty techniques and microbial contamination and he has also concluded that trehalose does not occur in the angiosperms. However, trehalase (EC 3.2.1.28) activity has been found in all higher plants examined (1, 6, 8, 1 1,12). A variety of plant tissues are able to utilize trehalose for growth in vitro (5,12,20,22,27), though the growth response is poor in some cases (30).…”

“…However, trehalase (EC 3.2.1.28) activity has been found in all higher plants examined (1, 6, 8, 1 1,12). A variety of plant tissues are able to utilize trehalose for growth in vitro (5,12,20,22,27), though the growth response is poor in some cases (30). This paper reports the toxic effect of trehalose on certain higher plants, an observation hitherto not reported.…”

Trehalose Toxicity in Cuscuta reflexa

“…The ability of plant tissues to utilize trehalose for growth in vitro has been demonstrated (6,14). We observed a toxic effect of trehalose in an angiospermic plant, Cuscuta reflexa (dodder).…”

“…The nonreducing diglucoside, a,a-trehalose, has not been found in the angiosperms, although constitutive trehalose-hydrolyzing activity (trehalase, EC 3.2.1.28) has been found in all plants examined (4)(5)(6)14). The ability of plant tissues to utilize trehalose for growth in vitro has been demonstrated (6,14).…”