Impact of land use types and farming practices on occurrence of arbuscular mycorrhizal fungi (AMF) Taita-Taveta district in Kenya

Jefwa, Joyce; Okoth, Sheila; Wachira, P. M.; Karanja, Nancy; Kahindi, Jhp; Njuguini, S.; Ichami, Stephen M.; Mung’atu, Joseph; Okoth, Peter F.; Huising, Jeroen

doi:10.1016/j.agee.2012.04.009

Cited by 38 publications

(51 citation statements)

References 35 publications

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“…Although studies had shown that tillage or land-use changes could display negative or no effects on AMF diversity [62][63][64][65][66], AMF diversity in both the rhizosphere soils and roots associated with C. dactylon in this study was significantly higher at CL than at DNC, and then at NCND ( Table 2). Explanations for such different effects could be (1) the host plants that were tested were different, C. dactylon in this study was a flooding-tolerant herbaceous plant with adventitious roots and aerenchyma, as AMF diversity was affected by the host plant identity [60,61]; (2) the land-use intensity was different, as the AMF diversity was affected by land-use intensity [67].…”

Section: Differences In Amf Colonization Diversity and Community In contrasting

confidence: 52%

“…Besides, nonmetric multidimensional scaling (NMDS) analyses indicated that land-use type was also a primary contributor to affect AMF community in the rhizosphere soils of C. dactylon (Figure 4, Table S4). Previous studies have demonstrated that the AMF communities in the sub-Saharan savannas soils of West Africa and temperate climatic zone soils of Central Europe were generally mediated through land-use type or intensity [66,80]. An explanation might be that land-use type could alter soil abiotic properties, such as soil available phosphorus and C/N ratio, thus influencing the AMF community in the rhizosphere soils.…”

Section: Correlations Of Differences Between Amf Community and Relevamentioning

confidence: 99%

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Soil Organic Carbon Shapes AMF Communities in Soils and Roots of Cynodon dactylon under Anti-Seasonal Drying-Wetting Cycles

Luo

et al. 2019

Diversity

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Anti-seasonal drying-wetting cycles since 2010 have substantially altered its soil and vegetation status in the drawdown zone of China’s Three Gorges Reservoir (TGR). Such alternations may thus affect the composition and functioning of soil microbial communities, including the beneficial arbuscular mycorrhizal fungi (AMF), which enhance plant performance. Moreover, limited information is available if AMF communities are different in soils and roots, particularly under contrasting land-use changes. By combining the Illumina Miseq sequencing with bioinformatics analyses, AMF communities in both rhizosphere soils and roots of a stoloniferous and rhizomatous C4 perennial of Cynodon dactylon were characterized under three land-use types: (1) crop cultivated, (2) non-cultivated non-disturbed, and (3) disturbed non-cultivated land. A total of 35 and 26 AMF taxa were respectively detected from C. dactylon rhizosphere soils and roots from these three land-use types, which had endured four anti-seasonal drying/summer-wetting/winter cycles. Contrasting differentiations in the AMF community composition and structure were displayed in the C. dactylon rhizosphere soils and roots, and between land-use types. Nonmetric multidimensional scaling analyses revealed that AMF communities significantly correlated to soil organic carbon in the rhizosphere soils and roots of C. dactylon, to land-use types only in rhizosphere soils, whereas to soil moisture only in roots. Our results highlight the effects of soil nutrients and land-use changes on AMF community composition and diversity under the canopy of C. dactylon in TGR. The identified dominant AMF taxa can be employed to vegetation restoration in such degraded habitats globally.

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Section: Differences In Amf Colonization Diversity and Community In contrasting

confidence: 52%

Section: Correlations Of Differences Between Amf Community and Relevamentioning

confidence: 99%

Soil Organic Carbon Shapes AMF Communities in Soils and Roots of Cynodon dactylon under Anti-Seasonal Drying-Wetting Cycles

Luo

et al. 2019

Diversity

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“…These genera have always been referred to as the most representative in diverse environments in Brazil (e.g. Aidar et al, 2004;Covacevich and Berbara, 2011;de Carvalho et al, 2012;Maia et al, 2010;Moreira et al, 2007;Silva et al, 2012;Souza et al, 2013;Stürmer et al, 2006) and elsewhere (Jefwa et al, 2012;Kowalczyk and Błaskowski, 2011;Li et al, 2007;Oehl et al, 2003).…”

Section: Discussionmentioning

confidence: 98%

Communities of arbuscular mycorrhizal fungi on a vegetation gradient in tropical coastal dunes

Silva

Souza

Velez

et al. 2015

Applied Soil Ecology

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“…The orders of Diversisporales and Glomerales were the most abundant and were present in all sites. Generally, species of Acaulospora and Glomus are more common in both natural and managed environments (Aidar et al 2004;Jefwa et al 2012;Oehl et al 2003). This result is due to both the high number of described species in these genera as well as their spread and adaptability (Daniell et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Disturbance and land use effect on functional diversity of the arbuscular mycorrhizal fungi

2015

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The arbuscular mycorrhizal fungal diversity in Mexico has not been intensively studied. Although some studies have reported the presence of 29 % of the reported species in the world, the knowledge regarding their functional diversity is poor. The aim of this study was to evaluate the impact of the disturbance on arbuscular mycorrhizal fungi (AMF) functional diversity. Three sites at the Biosphere Reserve Los Tuxtlas in the state of Veracruz were selected for this study, according to the disturbance gradient and the land use: López Mateos (LM), San Fernando (SF), and Venustiano Carranza (VC) (with low, medium and high disturbance, respectively). The land use in each site includes milpa and pasture. High percentages of root colonization, spore abundance and spore viability were found on LM soils. Additionally, 100 % of the pasture soils have a high mycorrhizal infective potential (MIP). In addition, the fungi consortiums coming from that site promote the highest mycorrhizal growth response (MGR), with increases ranging from 74.1 to 194.6 % over the control treatment. SF soils had high percentages of root colonization and spore viability, whereas only 20 % of these soils had a high MIP, and their MGR promoted increases ranged from 14.6 to 120.4 % over the control. Soils from VC had the lowest percentages of root colonization and spore viability. Only 10 % of the soils had high MIP, and their MGR was not better than the control. These results indicate that the soil disturbance or use changes negatively affect the functionality of AMF.

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Impact of land use types and farming practices on occurrence of arbuscular mycorrhizal fungi (AMF) Taita-Taveta district in Kenya

Cited by 38 publications

References 35 publications

Soil Organic Carbon Shapes AMF Communities in Soils and Roots of Cynodon dactylon under Anti-Seasonal Drying-Wetting Cycles

Soil Organic Carbon Shapes AMF Communities in Soils and Roots of Cynodon dactylon under Anti-Seasonal Drying-Wetting Cycles

Communities of arbuscular mycorrhizal fungi on a vegetation gradient in tropical coastal dunes

Disturbance and land use effect on functional diversity of the arbuscular mycorrhizal fungi

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