Journal of Stress Physiology &
Biochemistry, Vol.
8 No. 4
2012, pp. 62-71 ISSN 1997-0838
Original Text Copyright (cc) 2012 by Akimova, Sokolova, Maksimova
ORIGINAL
ARTICLE
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QueryDate : 2016-12-24
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Physiological distinctions of
pea symbiotic mutants with various nodulation level under inoculation
by Rhizobium leguminosarum
Akimova G.P., Sokolova М.G.,
Maksimova L.A.
Siberian
Institute of Plant Physiology and Biochemistry SD RAS 664033, Irkutsk,
Lermontov sr., 132, p/b 317, Russia
*E-Mail: SokolovaMG@sifibr.irk.ru
Received July 4, 2012
The study was focused on
morphological and physiological peculiarities of pea plants with
various nodulation ability under the infection by Rhizobium
leguminosarum. Microscopic studies identified distinct features in
formation of root nodules in different pea mutants. We revealed
differences in the content of indole-acetic acid (IAA) in mutants in
the root zones differing by sensibility to R. leguminosarum. It
was concluded that hormonal system of plants plays an important role in
control of nodulation process, and emergence of mutations inducing
disturbance of nodule-forming ability apparently depends on root
hormonal status, in particular, IAA concentration ensuring both
formation of nodule meristem and further organogenesis of the nodule.
Key
words: Rhizobium leguminosarum / Pisum sativum L. / indole-acetic
acid / nodulation / pea mutants
