ABA and IAA in rice seedlings under anaerobic conditions |
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Authors: | S Mapelli Paola Rocchi A Bertani |
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Institution: | (1) Istituto Biosintesi Vegetali, C.N.R, Via Bassini 15, 20133 Milano, Italy |
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Abstract: | The rice is important in plant science for its ability to germinate and grow with restricted or without oxygen availability.
In this work we have investigated the variation of growth substances when anoxia was imposed to rice seedlings previously
grown in air. An increase, in all the organs of a seedling and in particular in the fraction released in the medium, was observed
for ABA (abscisic acid), PA (phaseic acid) and DPA (dihydrophaseic acid) quantities.Vice versa a reduction of total IAA (indol-3-ylacetic acid) was observed in seedlings. This was accompanied by its accumulation in roots.
IAA was poorly released in aerobic conditions and anoxia has not changed this pattern. |
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