Record ID No. |
6224 |
Author(s) |
Vani S.*, Motha, Amballa H. and Reddy B. N. , 2014 |
Affiliation |
*NCLAS, National Institute of Nutrition, Hyderabad, 500 007 A.P. India. |
Title |
Arbuscular mycorrhizal fungi associated with rhizosphere soils of brinjal cultivated in Andhra Pradesh, India. |
Source. Vol.(no):Page |
International Journal of Current Microbiology and Applied Sciences. 3(5): 519-529. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biological Interaction Ecology |
Sub-subjects |
Biodiversity |
Host |
Brinjal |
Organism |
Glomus spp., Acaulospora spp., Gigaspora spp., Sclerocystis spp., Entrophospora spp. |
Country |
India |
Abstracts |
Mycorrhizae are highly evolved and have non-pathogenic symbiotic association
between roots of most vascular plants and certain specialized soil fungi that colonize the cortical tissues of roots during periods of active plant growth both in natural environment and in cultivation. The present study is aimed to assess the association of arbuscular mycorrhizal fungi in brinjal crop along with arbuscular mycorrhizal (AM) fungal population density in the rhizosphere soils, investigate for qualitative
composition of AM fungal species and per cent root colonization. The results showed
that the number of AM fungal propagules in brinjal crop collected from different
localities varied from 635 to 1325 spores per 100gm soil. Due to the widespread nature of AM fungi, they occurred in almost all the soil samples but with a variation both in number and type of spores and sporocarps. Altogether, 20 AM fungal species were isolated belonging to the genera of Glomus, Acaulospora, Gigaspora, Sclerocystis and Entrophospora. Glomus was observed to be predominant followed by Acaulospora in the rhizosphere soils of brinjal. The spore distribution, density and the composition of AM fungi were observed to be influenced by environmental and physico-chemical
factors. The AM spore population, percentage of root colonization and distribution varied by the seasonal fluctuations in moisture, temperature, pH and soil mineral nutrient status such as N, P, K, Zn, Fe, etc. The data showed that nitrogen deficient soils appeared to have more number of AM fungal propagules. The soils having high levels of phosphorus and potassium content harboured least number of AM fungal spore population while, low levels favoured more spore density. Similarly low levels of zinc, copper and manganese were favourable for more fungal occurrence and distribution. However, presence of high levels of iron favoured more AM fungal spore occurrence. |