Zahora, a new monotypic genus from tribe Brassiceae (Brassicaceae) endemic to the Moroccan Sahara

Koch, Marcus A.; Lemmel, Claude

doi:10.3897/phytokeys.135.46946

Cited by 9 publications

(8 citation statements)

References 24 publications

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Section: Resultsmentioning

confidence: 62%

“…When investigating the distribution of species classified as C3-C4 intermediates based on CCP data, the tree reveals multiple origins of CO2 concentration mechanisms in the Brassiceae. We note that the presented tree includes only a small subset of species from the Brassiceae group, though a recently published and more densely sampled phylogenetic tree (Koch and Lemmel, 2019) Therefore, the C3-C4 features in D. muralis are assumed to be inherited from D. tenuifolia (Ueno et al, 2006). In summary, our phylogenetic data indicate that C3-C4 features have independently evolved up to five times in the Brassicaceae, in B. gravinae, in D. erucoides, in H. incana, in the Moricandia group and in D. tenuifolia (subsequently inherited by hybridisation in D. muralis).…”

Section: Brassiceaementioning

confidence: 99%

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Brassicaceae display diverse photorespiratory carbon recapturing mechanisms

Schlüter

Bouvier

Guerreiro

et al. 2022

Preprint

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Carbon concentrating mechanisms enhance the carboxylase efficiency of the central photosynthetic enzyme rubisco by providing supra-atmospheric concentrations of CO2 in its surrounding. In the C4 photosynthesis pathway, this is achieved by combinatory changes to leaf biochemistry and anatomy. Carbon concentration by the photorespiratory glycine shuttle requires fewer and less complex modifications. It could represent an early step during evolution from C3 to C4 photosynthesis and an inspiration for engineering approaches. Plants displaying CO2 compensation points between 10 to 40 ppm are therefore often termed 'C3–C4 intermediates'. In the present study, we perform a physiological, biochemical and anatomical survey of a large number of Brassicaceae species to better understand the C3-C4 intermediate phenotype. Our phylogenetic analysis suggested that C3-C4 metabolism evolved up to five times independently in the Brassicaceae. The efficiency of the pathways showed considerable variation between the species but also within species. Centripetal accumulation of organelles in the bundle sheath was consistently observed in all C3-C4 classified accessions indicating a crucial role of anatomical features for CO2 concentrating pathways. Leaf metabolite patterns were strongly influenced by the individual plant accessions, but accumulation of photorespiratory shuttle metabolites glycine and serine was generally observed. Analysis of PEPC activities suggests that C4-like shuttles have not evolve in the investigated Brassicaceae.

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Section: Resultsmentioning

confidence: 62%

Section: Brassiceaementioning

confidence: 99%

Brassicaceae display diverse photorespiratory carbon recapturing mechanisms

Schlüter

Bouvier

Guerreiro

et al. 2022

Preprint

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“…Despite my full support of this trend, a couple of critical notes may be put forward. First, some of the species placed into the expanded Rhamphospermum (Sinapis pubescens L. and Trachystoma labasii Maire) exhibit contrasting positions in cp and nr phylogenies (Arias, Pires, 2012;Koch, Lemmel, 2019). This seems to indicate their more complex relationship to the group in question and the need of further elucidation of generic placement of these species.…”

Section: Taxonomy 1 Mutarda Vs Rhamphospermummentioning

confidence: 99%

Critical notes on Cruciferae

German

2022

Turczaninowia

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Generic name Mutarda is applied instead of the recently reinstated Rhamphospermum; the latter is lectotypified and synonymized with the prior, and the combinations M. allionii, M. arvensis, M. carinata along with Ceratocnemum × mirabile are validated. Calepina irregularis var. pinnatifida, neotypified Erysimum minus and Tetracme glochidiata are found conspecific with Rorippa barbareifolia, Barbarea bracteosa and Tetracme bucharica, respectively. Lepidium culminicola is recognized as Noccaea rubescens subsp. culminicola, comb. et stat. novi. Klukia Andrz. ex Bess., a synonym of Sisymbrium L., is shown to be validly published in 1822 thus threatening the homonymic name-in-use Klukia Racib. (fossil Schizaeaceae).

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“…Актуальним залишається вивчення видового розмаїття волосків. Характеристику трихом відносять до числа обов'язкових дескрипторів морфологічного опису нових таксонів (Brock et al, 2019;Koch and Lemmel, 2019;Al-Shehbaz, 2020;Salariato et al, 2020). Все ж в повному обсязі будова та функції трихом Brassicaceae ще не вивчені й досі.…”

Section: удосконаленняunclassified

The Structural Diversity of Trichomes and Pubescence of Brassicaceae Burnett of the Flora of Ukraine with an Emphasis on Ecology

Ilyinska

2021

Agrobiodivers Improv Nutr health life Qual

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Species of the Brassicaceae family (crucifers), which are of great scientific and practical importance, are inherent by a wide variety of trichome structures. Trichomes -specialized cells of the epidermis, modulate the response of plants to biotic and abiotic stresses. We investigated the structural diversity of trichomes and the features of pubescence of all (252 species, 73 genera) Brassicaceae species of the flora of Ukraine. Trichomes were studied on living plants and based on materials from seven herbaria, as well as on the basis of analysis of literature data. Stereoscopic and electronic scanning (JSM-6060 LA) microscopes were used in this investigation. To describe the structural diversity of trichomes, an original four-level hierarchical classification was developed, taking into account a complex of features, including functional specificity (covering or glandular), the nature and degree of hair branching, as well as the features of the orientation of their rays. The pubescence of plants was divided into isomorphic (consists of one type of trichomes) and heteromorphic (formed by two or more types of hairs with or without glandular structures). Hairs are completely absent in 23 species of 15 genera of the flora of Ukraine. Isomorphic pubescence is characteristic of the most (170 species) cruciferous plants and is represented by simple (120 species), Malpighian (23 species), stellate (23 species), dendroid (3) and fork-shaped (1 species) trichomes. The composition of heteromorphic pubescence is dominated by a combination of simple and fork-shaped hairs: it is observed in 44 species. There are glandular structures in the pubescence of 14 species. The structural diversity of Brassicaceae trichomes correlates, in general, with the temperate continental climate of Ukraine. Species without hairs or pubescent with simple trichomes, including those in combination with fork-shaped hairs, are observed in biotopes with sufficient moisture, optimal insolation, and satisfactory soil quality. Species with dense branched trichomes inhabit arid biotopes with intense insolation, insufficient moisture, and poor substrate. In the flora of Ukraine, the evolutionary-phylogenetic line LII included non-pubescent species or those with simple hairs. The cruciferous line LI is characterized by isomorphic and heteromorphic pubescence. In species LIV, heteromorphic pubescence predominates. Glandular structures are observed in the heteromorphic pubescence of taxa of line LIII.

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Zahora, a new monotypic genus from tribe Brassiceae (Brassicaceae) endemic to the Moroccan Sahara

Cited by 9 publications

References 24 publications

Brassicaceae display diverse photorespiratory carbon recapturing mechanisms

Brassicaceae display diverse photorespiratory carbon recapturing mechanisms

Critical notes on Cruciferae

The Structural Diversity of Trichomes and Pubescence of Brassicaceae Burnett of the Flora of Ukraine with an Emphasis on Ecology

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