In-site and Ex-site Date Palm Exposure to Heavy Metals Involved Infra-Individual Biomarkers Upregulation.

As a tree of considerable importance in arid regions-date palm, L. survival in contaminated areas of Sfax city has drawn our attention. Leaf samples of the plants grown in the study area showed high levels of cadmium (Cd), copper (Cu), and chromium (Cr).

Staminodes evolution and in vitro development innovation in date palm (Phoenix dactylifera L.).

The in vitro cultivation of date palm staminodes (vestigial stamens) at different stages of female floral ontogenesis confirms the persistence at an immature state of such organs at all the floral differentiation stages. This is evidenced even in fully mature female flowers. Our study revealed the advanced developmental patterns of these rudimentary structures, which bear diverse morphogenetic potentialities.

Transcriptome assembly and abiotic related gene expression analysis of date palm reveal candidate genes involved in response to cadmium stress.

Date palm in Tunisia is of major economic importance but are also factors of social, environmental and economic stability. An annotated assembly of the transcriptome of cultivar Deglet Nour was reported. RNA was isolated from plant Cd-contaminated leaves, and 37,049 unique Illumina RNA-seq reads were used in a transcriptome assembly.

from Tunisia: Phytochemical and Physicochemical Properties and Biological Activities.

Natural plant extracts contain a variety of phenolic compounds which are assigned various biological activities. Our work aims to make a quantitative and qualitative characterization of the Zest (ZL) and the Flesh (FL) of lemon , to valorize the pharmacological uses of lemon, by evaluating activities (DPPH, free radical scavenging and reducing power). The antibacterial, antifungal, and antiproliferative activities were sought in the ability of extracts to protect DNA and protein.

Ceratonia siliqua honeys from Morocco: Physicochemical properties, mineral contents, and antioxidant activities.

Physicochemical properties, main mineral content, and antioxidant activity were determined for eight floral carob honeys collected from different geographical regions of Morocco. Moroccan honeys showed good chemical and nutritional qualities, fulfilling the criteria described in the standard codex for honey. The percentages obtained for ashes were (0.

Indirect Somatic Embryogenesis of Date Palm Using Juvenile Leaf Explants and Low 2,4-D Concentration.

This chapter describes an efficient protocol for large-scale micropropagation of date palm. Somatic embryo-derived plants are regenerated from highly proliferating suspension cultures. Friable embryogenic callus is initiated from juvenile leaves using slightly modified Murashige and Skoog (MS) medium supplemented with 0.

In Vitro Cryopreservation of Date Palm Caulogenic Meristems.

Cryopreservation is the technology of choice not only for plant genetic resource preservation but also for virus eradication and for the efficient management of large-scale micropropagation. In this chapter, we describe three cryopreservation protocols (standard vitrification, droplet vitrification, and encapsulation vitrification) for date palm highly proliferating meristems that are initiated from vitro-cultures using plant growth regulator-free MS medium. The positive impact of sucrose preculture and cold hardening treatments on survival rates is significant.

Effect of the phosphogypsum amendment of saline and agricultural soils on growth, productivity and antioxidant enzyme activities of tomato (Solanum lycopersicum L.).

The objective of this study was to investigate the effects of phosphogypsum (PG) amendment on the physiochemical proprieties of saline and agricultural soils along with the growth, productivity and antioxidant enzyme activities of tomato plants ( Solanum lycopersicum L.) grown on the amended soils under controlled conditions. Obtained results showed that the amendment of saline soil (H) by PG induced a decrease in pH as well as in electrical conductivity.

The phytochelatin synthase gene in date palm (Phoenix dactylifera L.): Phylogeny, evolution and expression.

We studied date palm phytochelatin synthase type I (PdPCS1), which catalyzes the cytosolic synthesis of phytochelatins (PCs), a heavy metal binding protein, in plant cells. The gene encoding PdPCS1 (Pdpcs) consists of 8 exons and 7 introns and encodes a protein of 528 amino acids. PCs gene history was studied using Notung phylogeny.

The date palm (Phoenix dactylifera L.) micropropagation using completely mature female flowers.

This study describes an efficient and reproducible protocol for in vitro date palm propagation using mature female flowers. It focuses on the promising proliferation capacity exhibited by a number of female flower tissues taken at the final developmental stage. This capacity resided in the ability to preserve minuscule zones in a juvenile state located at the floral organ armpits (sepals and petals).

Multiple bud cultures of 'Barhee' date palm (Phoenix dactylifera) and physiological status of regenerated plants.

Adventitious bud clusters of date palm 'Barhee' were successfully established from juvenile leaves (<1cm) using reduced amounts of 2,4-D (0.2mgL(-1)) to limit the risk of somaclonal variation. An average of 8.

In vitro hermaphrodism induction in date palm female flower.

This study explores and reports on the gain brought to the morphogenetic aptitude of female date palm inflorescences through in vitro hermaphrodism induction. It investigates the main factors involved in the process of sex modification through hormonal induction, such as the floral developmental stage and hormone combination and concentration. It demonstrates that the vestigial stamens (staminodes) of female date palm flowers display a new and high capacity to proliferate under particular in vitro conditions, without blocking carpel's development, leading to morphologically typical hermaphrodite flowers.