Arbuscular mycorrhizal fungal colonization in three different age groups of rubber plantations in Tripura, North-East India

Abstract

Soil chemical properties, arbuscular mycorrhizal (AM) fungal colonization, AM fungal morphology in root and diversity of AM fungi in rubber plantations of three different age groups of 5, 10 and 30 years old of Tripura, North-East India were investigated. The result exhibited positive correlation (p<0.05) between AM colonization and spore density with available nitrogen. There was a positive significant correlation between AM colonization with spore density. AM fungal colonization was significantly higher in 5 and 10 than 30 years old plantation. Arum type of AM fungal morphology was observed in the root. A total of 12 morphotypes were isolated belonging to the genera Acaulospora, Ambispora and Glomus. Out of which 5, 9 and 9 AM fungal species were isolated from the rubber plantations of 30, 10 and 5 years old, respectively. Shannon diversity index was highest in 5 years old and lowest in 30 years old plantation. Evenness was highest in 30 years old and lowest in 10 years old plantation. The relation of soil chemical properties with AM fungal colonization and AM fungal species composition is discussed.

Beta Diversity of Arbuscular Mycorrhizal Communities Increases in Time after Crop Establishment of Peruvian Sacha Inchi (Plukenetia volubilis)

“…However, the variability across AM fungal communities in the studied plots (beta diversity) was influenced by the age of sacha inchi plantations. Contrary to our expectations and previous results in tropical systems [ 65 , 66 ], we found an increase of beta diversity with time. AM fungal community compositions in roots of plants less than one-year-old were more homogeneous, while those older than three years showed to be significantly more heterogeneous, i.e., they shared a lower number of species.…”

Root-fungal associations in plants from home gardens of Tripura, Northeast India

“…Gigaspora prevails in high sand content [47]. The dominance of Glomus was also reported from this region [23,25,33,48].…”

“…Mycorrhizal fungi have been studied from forest ecosystems in relation to its ecology and diversity [15][16][17]. Mycorrhizal associations regarding nutrient status, colonization, and diversity have been studied from plantations and agricultural soils [10,[18][19][20][21][22][23].…”

Arbuscular mycorrhiza and dark septate endophyte fungal associations of Oryza sativa L. under field condition: colonization features and their occurrence

“…The dominancy of Glomus species have also been reported by AM fungi occurring throughout the world (31,32,33).Earlier workers also marked out that Glomus is the dominant genus occurring in Indian soil (34,35) and may be attributed with their high adaptability to varied soil and temperature conditions and persist to exist in both acidic and alkaline soils (36). The copiousness of Glomus was also reported from these areas (37,38,39,40).…”