Avocado seedlings

Taylor, O. C., E. A. Cardiff, J. D. Mersereau, and J. T. Middleton. Effect of airborne reaction products of ozone and 1-N-hexene vapor (synthetic smog) on growth of avocado seedlings. Proc. Amer. Soc. Hort. Sci. 71 320-325, 1958. 

Air-borne Reaction Products of Ozone and 1-N-Hexene Vapor (Synthetic Smog) on Growth of Avocado Seedlings, Amer. Soc. Hort. Sci. (1958) 71, 320. 

Ouimette, D.G. and Coffey, M.D. (1989) Phosphonate levels in avocado seedlings and soil following treatment with fosetyl-Al or potassium phosphonate. Plant Dis., 73, 212-218. 

The 4 -carbonyl of PA is reduced by a soluble enzyme to give DPA [109], thus affording a hydroxyl that can be glucosylated. In tomato shoots, DPA-GS (Fig. 4) is a major metabolite of ABA [97], whereas DPA-GE, cp/-DPA-GE, and PA-GE are minor components of ABA metabolism [114]. The 1, 4 -r-diol-ABA is a metabolite of ABA in pea seedlings and avocado fruit [115], and in apple fruit [71]. The l, 4 -cw-diol has been identified in immature seeds of Viciafaba [116] and in avocado fruit [115]. The diols are rather unstable compounds that can be converted back to ABA with partial racemation at C-1 [117]. The diols can also form the 4 -glucosides and glucose esters, but these conversions represent minor pathways of ABA inactivation [118], Another minor metabolite of ABA is 7 -OH-ABA [92] (Eig. 4 see also Section 4.2). 

For example, pea seedlings reduce more ABA to the trans-d o than other species examined. Avocado fruit mesocarp and broad bean shoots reduce ( + )-[ CjABA and (—)-[ C]ABA to their trans-dioh and smaller amounts of (+)- and... 

Several tissues have been used to study the mechanism of fatty acid synthesis, particularly the avocado mesocarp, spinach and lettuce chloroplasts, and etiolated barley seedlings, but some major advances have been made from studies of maturing oil-bearing seeds, e.g. castor bean (in which 90% of the fatty acid content is ricinoleic acid) and safflower, Carthamus tine tor ius (76% linoleic and 1% oleic). Oleic acid plays a central role in plant fatty acid anabolism as the precursor of the major unsaturated fatty acids, e.g. it is the first detectable fatty acid formed when acetate is fed to the developing castor bean and is itself a precursor of ricinoleic acid. 

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