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55 results for “date palms”
Annotation of the the assembled genome of Fusarium oxysporum f. sp. albedinis strain 133, the causal agent of date palm dieback.
<p>Annotation of the the assembled genome of <em>Fusarium oxysporum f. sp. albedinis</em> strain 133 (Khayi et al., 2020). Gene prediction and annotation were carried out using funnotate pipeline v1.8.1 (Stajich, 2020), which includes masking, ab initio gene-prediction training, using Augustus and Genmark, with the EST dataset reported to the Ganoderma mycocosm repository, gene prediction, and the assignment of functional annotation to protein-coding gene models.</p>
Figure 3 in Seasonal incidence of Raoiella indica Hirst (Acari: Tenuipalpidae) on different varieties of date palm in Kachchh region of Western India
Figure 3. Pattern of distribution of red palm mite, Raoiella indica in different directions on three different varieties (pooled).
Bacterial community composition of bulk soil from date palm (Phoenix dactylifera) farm depend on irrigation water salinity
<p>Non-saline and saline ground water irrigation is extensively used in the arid regions of United Arab Emirates (UAE) for date palm (<em>Phoenix</em> <em>dactylifera</em>) cultivation without knowing its effect on bulk soil bacterial communities. Bulk soil acts as a supply base for microbes and nutrients that are accessed by date palm roots. We collected soil samples from date farms across UAE and performed V3-V4 16s rRNA metabarcoding analysis to understand how bulk soil bacterial diversity and communities respond to irrigation water sources (non-saline and saline groundwater irrigation). There was no significant variation in bulk bacterial diversity (Shannon diversity, richness as well as evenness). But bulk bacterial communities differed between irrigation water sources and irrigation water electrical conductivity was the significant factor that explained a part of community variation. Out of total 5089 OTUs, saline bulk soil harbored only 21.3% of total OTUs compared to 31.5% OTUs in non-saline bulk soil, while 47.15% OTUs shared between both types of irrigation. Proteobacteria abundance was higher in saline bulk soil, while Actinobacteriota abundance was enhanced in non-saline bulk soil. Similar selection was observed at genus level, wherein saline bulk soil showed increase in abundance of <em>Subgroup_10, Nitrospira </em>and<em> Mycobacterium</em>, whereas <em>Microvirga, Ammoniphilus, Nitrospira</em> and <em>Lysinibacillus </em>were elevated in non-saline bulk soil. Saline (<em>Novibacillus</em> and <em>Bauldea</em>) and non-saline bulk soil (<em>Microvirga</em>, <em>Marmoricola</em>, <em>Domibacillus</em>, <em>Oceanobacillus</em>, <em>Bhargavaea</em> and <em>Solirubrobacter</em>) showed significant selection of indicator taxa (P < 0.05). This indicate that bacterial communities colonizing bulk soil differ depending on irrigation water source and it is affected by irrigation water EC.</p>
Figure 2 in Evaluation of some nutritional quality criteria of seventeen Moroccan dates varieties and clones, fruits of date palm (Phoenix dactylifera L.)
Figure 2. Representation of dates varieties and clones according to their quality characteristics. (a) Representation of variables according to PCA. (b) Segregation of 17 dates varieties and clones according to their quality attributes.
Fig. 3. A in Differential proteomic analysis of date palm leaves infested with the red palm weevil (Coleoptera: Curculionidae)
Fig. 3. A pie chart presenting the classification of identified proteins according to their biological functions, expressed in percentage.
Fig. 1 in Differential proteomic analysis of date palm leaves infested with the red palm weevil (Coleoptera: Curculionidae)
Fig. 1. Two-dimensional differential gel electrophoresis representative images of date palm proteins. The protein sample of control, wounded, infested, and internal standard (pooled of all the samples) are individually labeled with Cy dyes, mixed together and separated by two-dimensional differential gel electrophoresis followed by image scanning. (A) image of date palm control sample and labeled with cy3 dye; (B) image of date palm artificially wounded sample labeled with cy5 dye; (C) image of date palm sample infested with red palm weevil and labeled with cy3 dye; (D) image of date palm sample pooled from all and labeled with cy2 dye; (E) overlay gel of control, infested, and wounded along with internal standard.
Fig. 2 in Differential proteomic analysis of date palm leaves infested with the red palm weevil (Coleoptera: Curculionidae)
Fig. 2. Venn diagram for the relative distribution of proteins spots in control, mechanically wounded, and red palm weevil infested date palm samples. The non-overlapping segment of diagram represent the number of proteins which were significantly up-regulated (> 1.5-fold) in the corresponding group when compared with the other two groups. The overlapping region between any two groups represents the number of protein spots significantly up-regulated (> 1.5-fold) compared to the third one. The central overlapping region depicts the protein spots where no statistically significant change in up- or down-regulation was observed.
Saline groundwater irrigation affects the date palm bulk soil associated fungal guild community and enhances the pathotroph abundance
<p><strong><em> Exploring the Influence of Saline Groundwater Irrigation on Soil Fungal Biodiversity in Date Palm (Phoenix dactylifera) Bulk Soil</em></strong></p>
Figure 1 in Field application of six commercial essential oils against Date Palm mite, Phyllotetranychus aegypticus (Acari: Tenuipalpidae) in Egypt
Figure 1. The relationship (regression modeling at P = 0.05) between X (temperature recorded in spring, summer, and autumn), and Y (predicted value which representing mite populations before and after oil treatments). The line is the linear model, significant part till temperature ≤ 27 (which represents spring and autumn treatments). While the circle in the end part, temperature> 27.50 (representing effect of oil in summer) is not significant, P = 0.202ns.
Figure 5 in Field application of six commercial essential oils against Date Palm mite, Phyllotetranychus aegypticus (Acari: Tenuipalpidae) in Egypt
Figure 5. Independent-samples test of ordered alternatives (Jonckheere-Terpstra Test) on the relation between tested commercial essential oils of thyme, spearmint, jasmine, banana, camphor and clove across the temperature recorded in the field application 2018, at 0.05 significance level.
Figure 4 in Field application of six commercial essential oils against Date Palm mite, Phyllotetranychus aegypticus (Acari: Tenuipalpidae) in Egypt
Figure 4. Independent-samples median (Kolmogorov-Smirnov Test) resulted the distribution and the median of tested commercial essential oils of thyme, spearmint, jasmine, banana, camphor and clove across the three categories of season (spring, summer, and autumn), at 0.05 significance level.
Figure 2 in Field application of six commercial essential oils against Date Palm mite, Phyllotetranychus aegypticus (Acari: Tenuipalpidae) in Egypt
Figure 2. The relationship between numbers of Phyllotetranychus aegyptiacus active stages/50 leaflets of palm trees (treated and control), and the optimum temperature recorded (°C) during spring, summer, and autumn 2018 in Giza.
Irrigation water source matters: Saline groundwater irrigation lowers date palm root-associated fungal richness and alters their community patterns
<p>Saline groundwater irrigation is predominantly used for date palm (<em>Phoenix dactylifera</em>) cultivation in the arid regions of the Middle East and North Africa without knowing its impact on root-associated fungal (RAF) communities. We investigated the impact of irrigation water sources (freshwater <em>vs.</em> saline groundwater) on date palm RAF diversity, communities, and their assembly processes. Summarily, we show that water chemistry (pH and EC) mainly structures RAF communities, whereas water pH shapes saprotrophic and pathotrophic communities, and the higher abundance of saprotrophic RAF (i.e. <em>Acrocalymma vagum</em>) under saline groundwater irrigation, despite the higher importance of the drift process, indicates their potential role in nutrient cycling and plant growth promotion under saline conditions in arid agroecosystems.</p>
Figure 2 in Seasonal incidence of Raoiella indica Hirst (Acari: Tenuipalpidae) on different varieties of date palm in Kachchh region of Western India
Figure 2. Damage symptoms of Raoliella indica on date palm leaves.
Figure 1 in Seasonal incidence of Raoiella indica Hirst (Acari: Tenuipalpidae) on different varieties of date palm in Kachchh region of Western India
Figure 1. Incidence of R. indica on date palm.
Salinity of irrigation water selects distinct bacterial communities associated with Date palm (Phoenix dactylifera L.) root
<p>Saline water irrigation has been used extensively in date palm (<em>Phoenix dactylifera </em>L.) agriculture as an alternative to non-saline freshwater due to water scarcity in hyper-arid environments. However, how saline water irrigation affects date palm root-associated bacterial communities is unknown. Here, we investigated the effect of irrigation sources (non-saline vs saline water) on date palm root-associated bacterial communities and their diversity using 16S rRNA gene metabarcoding. The bacterial richness, Shannon diversity and evenness didn’t differ significantly between the irrigation sources. Soil electrical conductivity (EC) and irrigation water pH were negatively related to Shannon diversity and evenness respectively, while soil organic matter displayed a positive correlation with Shannon diversity. Of total, 40.5% OTUs were unique to non-saline water irrigation and 26% to saline water irrigation. The multivariate analyses displayed strong structuring of bacterial communities according to irrigation sources, and both soil EC and irrigation water pH were the major factors affecting communities. The genera <em>Bacillus</em>, <em>Micromonospora</em> and <em>Mycobacterium</em> were dominated while saline water irrigation whereas contrasting pattern was observed for <em>Rhizobium</em>, <em>Streptomyces</em> and <em>Acidibacter</em>. This study suggests that while saline water irrigation date palm root select specific bacterial taxa, potentially playing a crucial role in alleviating salinity stress of the host.</p>
Figure 1 in Evaluation of some nutritional quality criteria of seventeen Moroccan dates varieties and clones, fruits of date palm (Phoenix dactylifera L.)
Figure 1. Map of Zagora of the date palm in Morocco as seen from space (Source: Google earth).
Male diversity matters: Genetic structuring of insular male date palm (Phoenix dactylifera L.) revealed valuable breeding and conservation resources
Most male date palms available for pollinating different female cultivars have mainly originated from seed propagation resulting in many different local males that represent a source of genetic diversity. Favorable fruit production is related to quality of pollen and its compatibility with a certain female variety. Therefore, the genetic characterization of the male pollen as a superior one for each female cultivar should be the first step to establish an intensive program to produce superior males through different procedures. In this study, the genetic diversity and population structure of 72 male date palm accessions were investigated using 15 microsatellite loci. A total number of 125 alleles was detected with an average of 8.33 alleles per locus. Bayesian model-based clustering analysis indicated the presence of two differentiated endemic male date palm genetic clusters, continental and insular, with the presence of introduced accessions originating from the Middle East. The diversity analysis in the insular region of Tunisia, which had never been performed before, revealed that this germplasm enclosed valuable endemic resources supporting the hypothesis of the presence of wild material. These findings are crucial for identifying interesting genotypes that can be integrated into international coordinated actions of Phoenix dactylifera L. breeding programs as well as for the protection and conservation of valuable resources.
View of date palm forest on Difoinarti (N19.94647° E30.49857°)
<p>Difoinarti, Sudan.</p> <p>This interpretation sees a demographic shift reflected in the situation of the date palm environment: occasional workers display a lack of old cleaning practices, with removal of dry matter from palms and from the ground, which is exacerbated by by-now greatly reduced usage of such matter, e.g. for roofs, fire, etc. From a landscape point of view, this is the prevalence of ‘disordered’ forests in place of the intensity of care for individual trees.</p>
Perl scripts from: The genomes of ancient date palms germinated from 2,000-year-old seeds
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