Research

Agricultural Sciences

Title :

Harnessing Endophytes and Arbuscular Mycorrhizal Fungi from Citrus Microbiome for Plant and Soil Health Management in North East India

Area of Research :

Agricultural Sciences

Focus Area :

Soil Health Management, Sustainable Agriculture

Principal Investigator :

Dr. Kiran Sunar, Balurghat Mahila Mahavidyalaya, Balurghat, West Bengal; Dr. Anjuma Gayan, Assam Agricultural University, Jorhat, Assam; Dr. Nirmali Gogoi, Tezpur University, Tezpur, Assam; Dr. Arun Rai, Sikkim University, Sikkim

Co-PI:

Dr. Dhruba Nath, Assam Agricultural University, Jorhat, Assam; Mr. Himadri Datta, Assam Agricultural University, Jorhat, Assam

Contact info :

Timeline Start Year :

2021

Timeline End Year :

2025

Total Budget (INR):

1,13,.3,546

Details

Executive Summary :

Citrus microbiome harbours a wide range of endophytic bacteria, fungi and arbuscular mycorrhizal fungi (AMF). Bacterial and fungal endophytes in the microbiome play multiple roles in plant growth and modulate host immune system, while the AM symbiosis confers nutrient uptake, greater tolerance to abiotic and biotic stresses and improves soil structure. Presently, citrus crop in NER India is being threatened by abiotic and biotic stresses causing decline of the citrus orchards. Moreover, erratic rainfall, high humidity, lack of proper soil conservation measures, leads to exposure of the acidic sub surface areas. Drought stress restricts vegetative growth and yield of citrus, adversely affecting fruit quality and results in economic loss. Additionally, Phytophthora foot rot or gummosis of citrus caused by Phytophthora nicotianae (syn. P. parasitica) and P. citrophthora is relatively common in citrus groves in the NE region.

Equipments :

Achievements :

Mapping of Mycorrhiza association in Citrus reticulata grown in the high altitude regions of Sikkim has been done for the first time through this study. AMF species diversity varied along the altitudinal gradient. Root colonization patterns also varied along the altitudes and the age of the host. AMF were purified by single spore culture technique and identified on the basis of morphological keys and reference from INVAM. The dominant species reported in this study are Acaulospora, Rhizophagus, Glomus and Gigaspora. Bacterial strains isolated from different sources were subjected to different in vitro plant growth promoting traits. Bacterial isolates showing multiple plant growth promoting attributes were identified and their ITS sequences have been deposited in NCBI GenBank. Among these B

Outcome/Output:

1

Organizations involved