Diplotaxis harra

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Sinapis harra

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae within the phylum Streptophyta and is classified under the class Equisetopsida and subclass Magnoliidae. It is further categorized into the order Brassicales and the family Brassicaceae. Finally, it is identified by its specific genus, Diplotaxis.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a diverse geographical distribution spanning across several Mediterranean regions. In Southwestern Europe, it can be found growing within the territory of Spain. Its presence extends into Southeastern Europe, specifically occurring on the island of Sicilia. The species also inhabits parts of Northern Africa, including the countries of Algeria and Libya. Furthermore, its range reaches as far east as Egypt in the Northern African region.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Diplotaxis harra is characterized by its specific altitudinal preferences within its native habitat. This species thrives within a defined elevational range, typically occurring at altitudes between 600 m and 800 m above mean sea level (AMSL). This relatively narrow vertical distribution suggests that the plant is adapted to the specific climatic conditions, temperature gradients, and atmospheric pressures found within these mid-altitude zones.

Elevational range max:

800 m AMSL

Elevational range min:

600 m AMSL

Life history

The life history of Diplotaxis harra is characterized by an annual lifecycle, meaning the plant completes its entire developmental process—from seed germination to flowering and subsequent seed production—within a single growing season. As an annual species, it avoids the complexities of perenniality by focusing its metabolic energy on rapid growth and immediate reproductive success. Following the onset of favorable environmental conditions, the plant germinates and undergoes a period of vegetative development, eventually transitioning into a reproductive phase where it produces flowers and seeds. Once the seed set is complete, the individual plant dies, leaving the next generation to rely on the seeds dispersed into the soil to await the following season's emergence.

Lifecycle :

annual

Morphology

The morphology of Diplotaxis harra is characterized by its growth form as a non-woody subshrub and herb. It functions as an independent organism, neither acting as a parasite nor an epiphyte, and maintains a terrestrial existence rather than being aquatic or semiaquatic. In terms of its structural habit, the plant is self-supporting, lacking the characteristics of a liana, vine, or obligatory climber.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

subshrub

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiology of Diplotaxis harra is characterized by a specialized metabolic framework governed by a C3 photosynthetic pathway. As a member of the Asteraceae family, its physiological processes rely on the direct fixation of atmospheric carbon dioxide through the enzyme RuBisCO during the Calvin cycle, occurring primarily within the mesophyll cells. This C3 mechanism dictates its water-use efficiency and gas exchange patterns, as the plant lacks the specialized Kranz anatomy associated with C4 metabolism or the nocturnal acid accumulation seen in CAM plants. Consequently, its physiological performance, including carbon assimilation rates and transpiration dynamics, is highly sensitive to ambient temperature and light intensity, requiring careful regulation of stomatal conductance to balance photosynthetic gain against potential photorespiration and water loss.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Diplotaxis harra is characterized by the production of dry fruits that facilitate its propagation within its habitat. The seeds produced by this species are notably minute, exhibiting a mean seed mass of 0.0001 g, with individual seed weights ranging from a minimum of 0.00009 g to a maximum of 0.00011 g. In terms of movement, the plant utilizes an anemochorous dispersal syndrome, relying on wind currents to transport its lightweight seeds to new locations.

Dispersal syndrome :

anemochorous

Fruit dryness :

dry

Seed mass max:

0.00011 g

Seed mass mean:

1e-04 g

Seed mass min:

9e-05 g

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Diplotaxis harra has 1 reported plant parts identified across 1 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include flower.

Flower

1. Pharmaceutical biology

Chemicals

Diplotaxis harra has 3 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include Flavonoids, Isorhamnetin, Isorhamnetin 3,7-di-O-glucoside.

Flavonoids

1. Pharmaceutical biology

Isorhamnetin

1. Plants (Basel, Switzerland)

Isorhamnetin 3,7-di-O-glucoside

1. Pharmaceutical biology

Activities

Diplotaxis harra has 3 reported activities identified across 1 scientific publications and several other databases. The most consistently reported activities include Anticancer, Antidiabetic, Antioxidant.

Anticancer

1. Pharmaceutical biology

Antidiabetic

1. Pharmaceutical biology

Antioxidant

1. Plants (Basel, Switzerland)

Conditions

Diplotaxis harra has 4 reported investigations on conditions identified across 1 scientific publications and several other databases. The most consistently reported conditions include antidiabetic, arthritis, neurodegenerative diseases, rheumatoid arthritis.

Antidiabetic

1. Pharmaceutical biology

Arthritis

1. Plants (Basel, Switzerland)

Neurodegenerative diseases

1. Plants (Basel, Switzerland)

Rheumatoid arthritis

1. Plants (Basel, Switzerland)

Preparations

Diplotaxis harra has 1 reported preparations identified across 1 scientific publications and several other databases. The most consistently reported preparations include flavonoid-rich extract of Diplotaxis harra (DHE).

Flavonoid-rich extract of diplotaxis harra (dhe)

1. Plants (Basel, Switzerland)