Arbuscular mycorrhizal fungal association in Asteraceae plants growing in the arid lands of Saudi Arabia

Dhar, P. P.; Al‐Qarawi, A. A.; Mridha, M. A. U.

doi:10.1007/s40333-015-0081-5

Cited by 11 publications

(3 citation statements)

References 40 publications

(66 reference statements)

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“…Before DNA extraction, the samples were sieved through a 2-mm mesh for thorough homogenization and to remove roots and plant detritus (Dong et al, 2013;Dhar et al, 2015). Genomic DNA was isolated from 1 to 1.25 g of mixed soil using the PowerSoil DNA Isolation Kit (MoBio Laboratories, Carlsbad, CA).…”

Section: Dna Extraction Polymerase Chain Reaction (Pcr) Amplificatiomentioning

confidence: 99%

Microbial diversity in the saline-alkali soil of a coastal Tamarix chinensis woodland at Bohai Bay, China

Liu

Zhang

et al. 2016

J. Arid Land

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Soil salinization or alkalization is a form of soil desertification. Coastal saline-alkali soil represents a type of desert and a key system in the network of ecosystems at the continent-ocean interface. Tamarix chinensis is a drought-tolerant plant that is widely distributed in the coastal saline-alkali soil of Bohai Bay, China. In this study, we used 454 pyrosequencing techniques to investigate the characteristics and distribution of the microbial diversity in coastal saline-alkali soil of the T. chinensis woodland at Bohai Bay. A total of 20,315 sequences were obtained, representing 19 known bacterial phyla and a large proportion of unclassified bacteria at the phylum level. Proteobacteria, Acidobacteria and Actinobacteria were the predominant phyla. The coverage of T. chinensis affected the microbial composition. At the phylum level, the relative abundance of γ-Proteobacteria and Bacteroidetes decreased whereas Actinobacteria increased with the increasing coverage of T. chinensis. At the genus level, the proportions of Steroidobacter, Lechevalieria, Gp3 and Gp4 decreased with the increase of the vegetation coverage whereas the proportion of Nocardioides increased. A cluster analysis showed that the existing T. chinensis changed the niches for the microorganisms in the coastal saline-alkali soil, which caused changes in the microbial community. The analysis also distinguished the microbial community structure of the marginal area from those of the dense area and sparse area. Furthermore, the results also indicated that the distance to the seashore line could also affect certain groups of soil bacteria in this coastal saline-alkali soil, such as the family Cryomorphaceae and class Flavobacteria, whose population decreased as the distance increased. In addition, the seawater and temperature could be the driving factors that affected the changes.

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Section: Dna Extraction Polymerase Chain Reaction (Pcr) Amplificatiomentioning

confidence: 99%

Microbial diversity in the saline-alkali soil of a coastal Tamarix chinensis woodland at Bohai Bay, China

Liu

Zhang

et al. 2016

J. Arid Land

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“…Anthemis cotula develops arbuscular mycorrhizal fungi (AMF) associations that promote its growth while simultaneously influencing local biodiversity (Shah et al , 2008, 2009; Dhar et al , 2015). Shah and Reshi (2007) found that AMF were commonly associated with A. cotula populations collected from 14 different sites across the Kashmir Valley, India.…”

Section: Biologymentioning

confidence: 99%

Mayweed chamomile (Anthemis cotula L.) biology and management—A review of an emerging global invader

2020

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The globally invasive weed, mayweed chamomile (Anthemis cotula L.) is an annual, bushy, ill‐scented herb, originating in Eurasia. It is aggressively weedy in croplands, field‐side ditches, wet areas and along roadsides, especially in slightly acidic, nitrogen‐rich, clay‐loam soils. In addition to interfering with crop growth, the weed causes dermatitis and eye irritation in humans, skin rashes and sour mouth in domesticated mammals, and off‐flavours in cow's milk through forage contamination. Although A. cotula may be managed effectively with some broadleaf herbicides in cereal crops, it is much more difficult to manage in broadleaved crops and cover crops. In some regions, aggressive use of relatively few herbicides has selected for acetolactate synthase herbicide resistance in A. cotula. Therefore, A. cotula poses serious ecological and economic challenges in many regions. Despite this threat, the details of A. cotula biology and ecology in the context of environmental change remain relatively unknown. For example, the reason for the invasiveness of A. cotula remains uncertain, but is presumed to be due to abundant seed production, allelochemicals, mycorrhizal associations, minimal herbivory in invaded ranges, ability to attract generalist pollinators through an extended flowering period and adaptive capacity in a wide range of soil types and conditions. In this paper, we comprehensively review the literature and ongoing work on A. cotula and provide a research agenda to improve understanding and management of this species.

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“…Flora in Saudi Arabia entails 2250 varieties that belong to132 families in addition to 837 general species inhabit sand dunes; and also 90 are considered as halophytes (a plant adapted to growing in saline soil); 75 are trees; and 12 are aquatic plants. Beyond these species, 40 are believed to be endemic ( Abuzinada et al, 2005 , Dhar et al, 2015 , Abd El-Salam and Elhakem, 2016 ). The natural rangelands in Saudi Arabia are estimated to cover nearly 170,000,000 ha which are equal to 76% of the total land area of Saudi Arabia, situated mostly within arid and hyper-arid regions ( Abuzinada et al, 2005 ).…”

Section: Introductionmentioning

confidence: 99%

Spatial analysis of rangeland's vegetation intensity as related to selected physical soil variables over ABQAIQ municipality of Saudi Arabia

Alzarah

Hassaballa

Salih

2021

Saudi Journal of Biological Sciences

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Through most of the natural rangelands of Saudi Arabia, overgrazing, sand drifting, and off-road vehicles driving are almost the major contributing factors that lead to vegetation damage and land degradation in natural landscapes. The current study aimed at examining the dynamic nature of Abqaiq rangelands' vegetation, generating a vegetation intensity map, and investigating possible impacts caused by the spatial variability of obtained soil texture, sand content (%), and the derived available water capacity (DAW capacity (%)) on the intensity distribution of vegetation cover. Ordinal-nominal correlation type and spatial autocorrelation processes were adopted throughout the study to analyze the spatial correspondences as well as the interrelated patterns of the given variables. The resultant correlation between vegetation and soil texture (ordinal versus nominal variables) has yielded a significant (p-value < 0.001) relevancies, where, silt loam texture class, in particular, has proven to have the most correlated values to the most intensive vegetation habitats, where 5%, 35%, and 28% of the silt loam class were occupied by 80%, 60%, and 40% of vegetation intensities, respectively. Whereas, for the continuous variables, correlation outcomes have achieved a substantial negative spatial autocorrelation concerning vegetation intensity and sand content percentage, revealing a total absence of green biomass over the sandy soils. Additionally, vegetation intensity versus DAW capacity percentage significantly yielded a positive autocorrelation, revealing a high clustering of green biomass cover that associates with high clustering of high-water capacity soils. The autocorrelation strength identifier (Morn's I ), produced an approximate value of 0.3 with a pseudo p -value of 0.001, for both relationships. The findings of this study would help researchers and relative authorities to grasp the reasons, consequences and behaviors of rangeland flora, considering Abqaiq's area as an example.

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Arbuscular mycorrhizal fungal association in Asteraceae plants growing in the arid lands of Saudi Arabia

Cited by 11 publications

References 40 publications

Microbial diversity in the saline-alkali soil of a coastal Tamarix chinensis woodland at Bohai Bay, China

Microbial diversity in the saline-alkali soil of a coastal Tamarix chinensis woodland at Bohai Bay, China

Mayweed chamomile (Anthemis cotula L.) biology and management—A review of an emerging global invader

Spatial analysis of rangeland's vegetation intensity as related to selected physical soil variables over ABQAIQ municipality of Saudi Arabia

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