> I would greatly appreciate if some list members can point me to
> sources
> of latest research and case studies in various parts of the world on
> the
> following:
>
> (a) Use of biotechnology to engineer plants with an increased ability
> to
> acquire nutrients from marginal soils, and
>
I saw a promising paper in Science a while back:
AU: Fuente,-J.M.-de-la; Ramirez-Rodriguez,-V.; Cabrera-Ponce,-J.L.;
Herrera-Estrella,-L.
TI: Aluminum tolerance in transgenic plants by alteration of citrate
synthesis.
SO: Science. Washington, D.C. : American Association for the
Advancement of Science. June 6, 1997. v. 276 (5318) p. 1566-1568.
CN: DNAL 470-Sci2
LA: English
AB: Aluminum when in soluble form, as found in acidic soils that
comprise about 40 percent of the world's arable land, is toxic to many
crops. Organic acid excretion has been correlated with aluminum
tolerance in higher plants. Overproduction of citrate was shown to
result in aluminum tolerance in transgenic tobacco (Nicotiana tabacum)
and papaya (Carica papaya) plants.
IMO, this kind of engineering would be valuable in sorghum especially.
Dale Wilson
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