New Gene Crt(Curly Roots) Controlling Pea (Pisum sativum L.) Root Development |
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| Authors: | Tsyganov, V. E. Pavlova, Z. B. Kravchenko, L. V. Rozov, S. M. Borisov, A. Y. Lutova, L. A. Tikhonovich, I. A. |
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| Affiliation: | All-Russia Research Institute for Agricultural Microbiology, Podbelsky Chaussee 3, St. Petersburg, Pushkin 8, 189620, Russia Department of Genetics and Breeding, St. Petersburg State University, Universitetskaya embankment 7/9, St. Petersburg, 199034, Russia Institute of Cytology and Genetics, Lavrent’ev avenue 10, Novosibirsk, 630090, Russia |
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| Abstract: | Using ethyl methane sulfonate (EMS) treatment of the seeds ofline SGE, a new mutant of pea (Pisum sativum L.) with alterationsin root development was obtained. The mutant phenotype dependson the density of the growth substrate: on sand (a high densitysubstrate) the mutant forms a small compact curly root systemwhereas on vermiculite (a low density substrate) differencesbetween the root systems of the mutant and wild type plantsare less pronounced. Genetic analysis revealed that the mutantcarries a mutation in a new pea gene designedcrt (curly roots).Gene crt has been localized in pea linkage group V. The mutantline named SGEcrt showed increased sensitivity to exogenousauxin and an increased concentration of endogenous indole-3-aceticacid (IAA) in comparison with the wild type line SGE. Copyright2000 Annals of Botany Company Pisum sativum L., root development, garden pea mutant, curly roots, auxin, environmental stimulus response |
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