Role of arbuscular mycorrhiza fungi on tolerance to salinity of the tree legume Albizia lebbeck (L.) inoculated by Rhizobium

Gaurav Bhushan, Santosh Kr Sharma, Priyanka Sagar, Nishtha Seth, A.P Singh

Abstract


Myrica esculenta (Myricaceae) and Syzygium cumini(Myrtaceae), the Indian traditional fruits The
effect of different level of salinity on growth, nodulation and Nitrogen fixation of single and dual
inoculated tree legumes which help arbascular mycorrhizal fungi (AMF) Acaulospora laevis Gerd.
and Trappe with Rhizobium bacteria in the presence of different levels of salinity (concentration
of NaCl) conducted in earthen pots in a completely randomized block design with three replications
resulted in effective plant growth, shoot and root biomasses, nodulation and N2 fixation. The effect
of different levels of salinity (concentration of NaCl) on growth, nodulation and N2 fixation of
single (Rhizobium or AMF alone) and dual inoculated (Rhizobium + AMF ) tree legume has a pot
culture experiment using The parameter growth , nodulation, nitrogen fixation and % AMF
colonization of roots were considerable influenced with the increase in salt concentration from 0.5
% to 4.0 % NaCl. It was observed that the mycorrhizal tree legume (inoculated with the most
preferred AMF Acaulospora laevis) performed better in the increasing levels of salinity in
comparison to non-mycorrhozal ones. These investigations suggested a protective role play by
AMF in providing resistance to the tree legume against injurious effects of salinity. Inoculation of
efficient strain of AMF (Acaulospora laevis) during the course of study, prevented the injurious
effects of salinity in the test plants due to enhanced water and sustainable nutrient uptake thereby
promoting growth, nodulation and biogeochemical N2 cycle (fixation of nitrogen) of the tree
legume under investigation.

Keywords


Arbuscular mycorrhiza fungi Albizia lebbeck, Acaulospora laevis, Rhizobium, Nodulation,N2fixation and salinity

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DOI: https://doi.org/10.30750/ijpbr.2.1.7

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