Effect on wheat root development of inoculation with an Azospirillum brasilense mutant with altered indole-3-acetic acid production.
To evaluate the involvement of indole-3-acetic acid (IAA) in promotion of root development, the effects of inoculation of wheat seedlings with Azospirillum brasilense SpM7918, a very low-IAA producer, were estimated. Compared with the wild-type strain Sp6, SpM7918 showed a reduced ability to promote root system development in terms both of number and length of lateral roots and of distribution of root hairs.
Barbieri
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P
Dipartimento di Genetica e di Biologia dei Microrganismi, Università degli Studi di Milano, Italy.
Galli
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E
D015806:Azospirillum brasilense / Q000378:metabolism*; D066298:In Vitro Techniques; D007210:Indoleacetic Acids / Q000378:metabolism / Q000494:pharmacology*; D008854:Microscopy, Electron; D010937:Plant Growth Regulators / Q000096:biosynthesis*; D014908:Triticum / Q000187:drug effects* / Q000254:growth & development / Q000382:microbiology / Q000648:ultrastructure
D007210:Indoleacetic Acids; D010937:Plant Growth Regulators