Analyse de la variabilité morphologique chez huit populations spontanées de<i>Pistacia atlantica</i>en Algérie

Belhadj, Safia; Derridj, Arezki; Auda, Yves; Gers, Charles; Gauquelin, Thierry

doi:10.1139/b08-008

Cited by 23 publications

(16 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In Algeria, although many studies have been conducted on the Atlas pistachio, they have primarily targeted its more accessible aerian part. We can cite nonexhaustively the work by Belhadj et al (2008) on the analysis of morphological variability of its leaves and fruit and on its leaf micromorphology (Belhadj et al, 2007), and the work by Ait Said et al (2011) on its leaf morpho-anatomy and phytochemistry. However, with regards to its underground part (its root system), few studies have been conducted.…”

Section: Introductionmentioning

confidence: 99%

Root architecture adaptation of Pistacia atlantica subsp. atlantica according to an increasing climatic and edaphic gradient: case of a north–south transect in Algeria

Limane¹,

Smail-Saadoun²,

Belkebir-Boukais³

et al. 2014

Turk J Bot

View full text Add to dashboard Cite

Roots are hidden by soil, making their excavation and measurement of their size very laborious (Gregory, 2006) and difficult to analyze (Rood et al., 2011). However, the study of their spatial distributions allows the discovery of their main sources of water and minerals (Lynch, 1995). Given the quantitative and qualitative heterogeneity in Abstract: Despite xeric conditions, Pistacia atlantica Desf. subsp. atlantica (Atlas pistachio) succeeds in developing impressive dendrometric dimensions (25-m high, 2-m trunk diameter). It is among the rare spontaneous phanerophytes of the North African steppe. With access to water being the primary condition for survival, we focused on its root system. According to a gradient of increasing climatic and edaphic aridity in Algeria, we recorded different root architectures set up by this tree. We sampled its underlying soil and determined its main physico-chemical characteristics. Root architecture is mainly of the superficial type with more than 60% of roots located in the top 50 cm of soil along the north-south transect. With the decrease in precipitation and the rising of temperatures, length of the dry season, and the content of sand in soil, the number of superficial roots and their ramifications decrease, while their average circumferences, and the length and average circumference of the deep roots increase. These deep and thick roots allow access and storage of moisture present in the deep levels and protected there from evaporation, and, on the other hand, provide an important anchor in these soft soils. The Atlas pistachio adapts to increasing climatic and edaphic aridity by adopting a phreatophytic strategy.

show abstract

Section: Introductionmentioning

confidence: 99%

Root architecture adaptation of Pistacia atlantica subsp. atlantica according to an increasing climatic and edaphic gradient: case of a north–south transect in Algeria

Limane¹,

Smail-Saadoun²,

Belkebir-Boukais³

et al. 2014

Turk J Bot

View full text Add to dashboard Cite

show abstract

“…ssp. atlantica which exhibits high morphological variability (Belhadj et al, 2008), P lentiscus L. and less frequently P. terebinthus L. Pistacia atlantica is considered to be an Irano-Turanian species which is distributed from south-west Asia to north-west Africa (Zohary, 1952). In Algeria, it occurs in the wild from sub-humid environments to extreme Sahara sites (Monjauze, 1967;Quézel and Médail, 2003;Benhassaini et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Inter-population variability of leaf morpho-anatomical and terpenoid patterns of Pistacia atlantica Desf. ssp. atlantica growing along an aridity gradient in Algeria

Said

Fernandez

Greff

et al. 2011

Flora - Morphology, Distribution, Functional Ecology of Plants

Self Cite

View full text Add to dashboard Cite

a b s t r a c tThree Algerian populations of female Pistacia atlantica shrubs were investigated in order to check whether their terpenoid contents and morpho-anatomical parameters may characterize the infraspecific variability. The populations were sampled along a gradient of increasing aridity from the Atlas mountains into the northwestern Central Sahara.As evidenced by Scanning Electron Microscopy, tufted hairs could be found only on seedling leaves from the low aridity site as a population-specific trait preserved also in culture. Under common garden cultivation seedlings of the high aridity site showed a three times higher density of glandular trichomes compared to the low aridity site. Increased aridity resulted also in reduction of leaf sizes while their thickness increased. Palisade parenchyma thickness also increases with aridity, being the best variable that discriminates the three populations of P. atlantica.Analysis of terpenoids from the leaves carried out by GC-MS reveals the presence of 65 compounds. The major compounds identified were spathulenol (23 g g −1 dw), ␣-pinene (10 g g −1 dw), verbenone (7 g g −1 dw) and ␤-pinene (6 g g −1 dw) in leaves from the low aridity site; spathulenol (73 g g −1 dw), ␣-pinene (25 g g −1 dw), ␤-pinene (18 g g −1 dw) and ␥-amorphene (16 g g −1 dw) in those from medium aridity and spathulenol (114 g g −1 dw), ␣-pinene (49 g g −1 dw), germacrene D (29 g g −1 dw) and camphene (23 g g −1 dw) in leaves from the high aridity site. Terpene concentrations increased with the degree of aridity: the highest mean concentration of monoterpenes (136 g g −1 dw), sesquiterpenes (290 g g −1 dw) and total terpenes (427 g g −1 dw) were observed in the highest arid site and are, respectively, 3-, 5-and 4-fold higher compared to the lower arid site. Spathulenol and ␣-pinene can be taken as chemical markers of aridity. Drought discriminating compounds in low, but detectable concentrations are ␦-cadinene and ␤-copaene. The functional roles of the terpenoids found in P. atlantica leaves and principles of their biosynthesis are discussed with emphasis on the mechanisms of plant resistance to drought conditions.

show abstract

“…The species grows well on clay or silty soils, although it can thrive also on calcareous rocks where roots develop inside cracks. Hence, P. atlantica has a wide ecological plasticity as also shown by Belhadj et al (2008) through leaf epidermis analysis. P. atlantica is found in association with Ziziphus lotus that constitutes a protection against animals and strong winds for the new seedlings.…”

Section: Taxonomy and Distributionmentioning

confidence: 81%

Four Pistacia atlantica subspecies (atlantica, cabulica, kurdica and mutica): A review of their botany, ethnobotany, phytochemistry and pharmacology

Ahmed

Yousfi

Viaene

et al. 2021

Journal of Ethnopharmacology

View full text Add to dashboard Cite

Analyse de la variabilité morphologique chez huit populations spontanées dePistacia atlanticaen Algérie

Cited by 23 publications

References 13 publications

Root architecture adaptation of Pistacia atlantica subsp. atlantica according to an increasing climatic and edaphic gradient: case of a north–south transect in Algeria

Root architecture adaptation of Pistacia atlantica subsp. atlantica according to an increasing climatic and edaphic gradient: case of a north–south transect in Algeria

Inter-population variability of leaf morpho-anatomical and terpenoid patterns of Pistacia atlantica Desf. ssp. atlantica growing along an aridity gradient in Algeria

Four Pistacia atlantica subspecies (atlantica, cabulica, kurdica and mutica): A review of their botany, ethnobotany, phytochemistry and pharmacology

Contact Info

Product

Resources

About