Arbuscular mycorrhizal associations in different forest tree species of Hazarikhil forest of Chittagong, Bangladesh

Abstract

Biodiversity of arbuscular mycorrhizal (AM) colonization and AM fungal spores were studied in the roots and rhizosphere soils of Acacia catechu (L.f). Wild., A. mangium Willd, Anthocephala cadamba Miq., Artocarpus chaplasha Roxb., Chickrassia tabularis A. Juss., Swietenia macrophylla King., Tectona grandis L. from plantations; Albizia procera (Roxb.) Benth., A. falcataria L., Alstonia scholaris (L.) R. Br., Aphanamixis polystachya (Wall.) Parker., Hydnocarpus kurzii (King.) Warb., Heynea trijuga Roxb., Lagerstroemia speciosa (L.) Pers., Messua ferrea Linn., Podocarpus nerifolia Don., Swintonia floribunda Griff., Syzygium fruticosum (Roxb.) DC., S. grandis (Wt.) Wal. from forest and nursery seedlings of A. polystachya, A. chaplasha, Gmelina arborea Roxb. and S. cuminii (L.) Skeels from Hazarikhil forest, Chittagong of Bangladesh. Roots were stained in aniline blue and rhizosphere soils were assessed by wet sieving and decanting methods. The range of AM colonization varied significantly from 10%−73% in the plantations samples. Maximum colonization was observed in A. mangium (73%) and minimum colonization was observed in C. tabularis (10%). Vesicular colonization was recorded 15%−67% in five plantation tree species. The highest was in A. cadamba (67%) and the lowest was in T. grandis; A. chaplasha and C. tabularis showed no vesicular colonization. Arbuscular colonization was recorded 12%−60% in four plantation tree species. The highest was in A. mangium (60%) and the lowest was in A. cadamba. Roots of Artocarpus chaplasha, C. tabularis and T. grandis showed no arbuscular colonization. Among 12 forest tree species, nine tree species showed AM colonization. The highest was in A. falcataria (62%) and the lowest was in S. fruticosum (10%). Significant variation in vesicular colonization was recorded in seven forest tree species. The highest was in H. trijuga (52%) and the lowest was in L. speciosa (18%). Hydnocarpus kurzii, M. ferrea, P. nerifolia S. fruticosum and S. grandis showed no vesicular colonization. Arbuscular colonization was recorded in sevenThe online version is available at Responsible editor: Hu Yanbo forest tree species. The highest was in A. falcataria (60%) and the lowest was in A. procera (10%). All the nursery seedlings showed AM colonization and the range was 10%−73%. Vesicules were recorded in G. arborea (40%) and S. cumini (40%). Arbuscular colonization was recorded in G. arborea (100%) and S. cumini (100%). Spore population was recorded 77−432/100 g dry soils, 80−276/100 g dry soils, and 75−153/100g dry soils in plantation, forest and nursery, respectively. Glomus and Acaulospora were dominant genera among the six AM fungi recorded. Significantly positive correlation was observed between AM colonization and AM fungal spore population in Hazarikhil plantation tree species, forest tree species and nursery tree seedlings. The present study showed the biodiversity of root colonization and AM fungi are active in nutrient cycling, survivals and seedling establishment of the plants in the Hazarikhil for...

Arbuscular Mycorrhizal Fungi Associated with Tree Species in a Planted Forest of Eastern China

“…The results of the present study showed that the eight tree species examined in the planted forest were colonized by AMF. However, the AMF colonization status varied significantly depending on sampling point and the planted tree species, consistent with the results of a previous study on AMF of tree species in different forests [22]. Similar variations in AMF colonization have also been found in other types of forests, such as tropical rainforests [24,49] and peat swamp forests [50].…”

“…The biological and functional diversity of AMF is vitally important to forest ecosystems, and can be decisive for plant community structures and productivity [14,15]. Previous studies on AMF diversity in forests have been conducted mainly in Brazil [16,17], Mexico [18], USA [19], India [20,21], Bangladesh [22], Ethiopia [23], and China [24]. In China, AMF diversity was examined in grassland ecosystems [25,26], an agroecosystem [27], a wetland ecosystem [28], and a natural forest ecosystem [29], mostly concentrating on medicinal plants [30,31] and herbaceous plants [32].…”

Arbuscular mycorrhizal fungi associated with the rhizosphere of seedlings and mature trees of Swietenia macrophylla (Magnoliophyta: Meliaceae) in Los Tuxtlas, Veracruz, Mexico

“…Our results therefore suggest that in order to have a more complete picture of the AMF communities associated with tropical trees, it is important to use both methodologies, collection of AMF from rizosphere soil and cultivation using trapplants. Dhar and Mridha (2012) showed colonization percentages for hyphae and vesicles of 60 and 40%, respectively, and the percentage of arbuscules of 19% for mahogany plantations in Bangladesh. A lower potential Total colonization 53.3 ± 2.01a 41.5 ± 2.01b 51.4 ± 0.03a 40.6 ± 0.03b % Arbuscules 26.3 ± 1.88a 17.6 ± 1.88b 24.6 ± 0.06a 14.1 ± 0.06b % Vesicles 11.3 ± 1.01a 13.23 ± 1.01a 10.6 ± 0.02a 11.8 ± 0.02a % Hyphae 26.5 ± 1.40a 14.6 ± 1.40b 22.6 ± 0.02a 14.21 ± 0.02b % Endophytes 6.09 ± 0.93a 5.5 ± 0.93a 5.2 ± 0.05a 4.12 ± 0.05a…”

Arbuscular mycorrhizal fungi in Melocanna baccifera from disturbed and undisturbed sites in Mizoram, India

“…Percent root colonization was calculated. 17 Percent root colonization was determined using the following formula:…”