Lettuce cotyledons

Effect of (-)-usnic acid (- -) and (+)-usnic acid (-o-) (0.03 - 100 pM no data for 0.1 m-M) on chlorophyll concentration in lettuce cotyledons after 6 days of growth. 

Effect of series 1 emodin analogues (0.1-1000pM) concentration in lettuce cotyledons after 6 days of growth. 

Shibata K, Kubota T, Kamisaka S (1974) Isolation and chemical identification of a lettuce cotyledon factor, a synergist of the gibberellin action in inducing hypocotyl elongation. Plant Cell Physiol 15 191-194... 

Chin A, Fonseca S, Chico JM, Femandez-Calvo P, Solano R (2009) The ZIM domain mediates homo- and heteromeric interactions between Arabidopsis JAZ proteins. Plant J 59 77-87 Cho SC (1983) Effects of cytokinin and several inorganic cations on the polyamine content of lettuce cotyledons. Plant Cell Physiol 24 27-32... 

Figure 1. Effects of CaCl2 on bioassays for auxin, gibberellin, and cytokinin. A effects of CaCl2 on elongation of oat coleoptile sections in the presence and absence of indoleactic acid B effects on elongation of lettuce hypocotyls in the presence and absence of gibberellic add and C effects on enlargement of Xanthium cotyledon pieces in the presence and absence of benzyladenine (13).

Unfortunately, no histochemical or cytochemical studies of the involvement of lipolytic enzymes during the infection of potato leaves by P. infestans have yet been reported. Histochemical and biochemical observations of potato tubers infected by P. Infestans revealed elevated levels of esterase (measured with Q-naphthol acetate) in unidentified host organelles during infection (1 1). Cytochemical techniques were used to identify lipolytic activity in fungal and host cell walls during the infection of lettuce (Lactuca sativa L.) cotyledons by Bremia lactucae (12). 

It must be realized, however, that reserves are frequently present in some measure throughout the whole seed. In lettuce, for example, though most of the protein and oil stores are located in the cotyledons, protein and oil bodies nevertheless do occur in the radicle/hypocotyl region. Additionally the endo-... 

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