Arbuscular mycorrhizal and dark septate endophytic fungal symbioses in Parkia timoriana (DC.) Merr. and Solanum betaceum Cav. plants growing in North East India

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Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
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Doi: 10.1007/s42535-021-00258-2
First Page: 761
Last Page: 774
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Keywords: AM fungal diversity, Endorhizal colonization, AM morphology, Tree tomato, Tree bean


Despite the importance of arbuscular mycorrhizal (AM) and dark septate endophyte (DSE) fungi on the growth and yield of field-grown crops, there is limited information on the indigenous root fungal associations in vegetable trees. Hence, we assessed the AM morphology and diversity of AM fungi in rhizosphere soils, as well as colonization patterns of AM and DSE fungi in the roots of two vegetable tree species viz. Parkia timoriana and Solanum betaceum growing under shifting cultivated lands of North East India. The maximum AM spore density and species richness occurred in S. betaceum. Altogether based on spore morphology, 16 AM fungal species were isolated from the field and trap culture soils of studied vegetable trees. Both P. timoriana and S. betaceum had dual colonization of AM and DSE fungi. Parkia timoriana had Intermediate-type AM morphology, whereas, Paris-type morphology was reported for the first time in S. betaceum. Incidence of total AM and DSE fungal colonization in the roots of two plant species varied significantly (P < 0.05). A significant positive correlation also existed among some AM fungal variables and soil properties (P < 0.05). Thus, the occurrence of AM and DSE associations in two economically important vegetable trees grown in hilly terrains indicate the possibility of utilizing them in the future for sustainable vegetable food production.

AM fungal diversity, Endorhizal colonization, AM morphology, Tree tomato, Tree bean

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The authors thankfully acknowledge the financial support received from ICAR-AMAAS Coordination Unit (ICAR/NBAIM/AMAAS/2017-20/GF/1a/531), Government of India, to carry out this research work.

Author Information

Surendirakumar Kannaiah
Department of Life Sciences, Manipur University, Imphal, India

Chongtham Ishworani
Department of Life Sciences, Manipur University, Imphal, India

Pandey Radha Raman
Department of Life Sciences, Manipur University, Imphal, India
Muthukumar Thangavelu
Root and Soil Biology Laboratory, Department of Botany, Bharathiar University, Coimbatore, India