Genus <i>Chrysothamnus</i>: A Source of Bioactive Compounds

Hegazy, Mohamed‐Elamir F.; Mohamed, Abou El‐Hamd H.; El‐Razek, Mohamed H. Abd; Hammouda, F. M.; Hassan, N. M.; Mahalel, Usama A.; El-Halawany, Ali M.; Mahmoud, Ahmed A.; Karchesy, Joseph J.; Hirata, Toshifumi; Ahmed, Ahmed A.

doi:10.1177/1934578x0700200917

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…Given the importance of resorption in nutrient conservation, our data suggest other factors may limit P resorption in these desert asters. Artemisia, Chysothamnus, and Tetradymia species produce a variety of secondary compounds, including terpenes (Hegazy et al, 2007;Jennings et al, 1974;Kelsey et al, 1982;Personius et al, 1987), the intermediates of which require phosphate (Croteau et al, 2000). It is possible that these compounds preclude more proficient P resorption.…”

Section: Introductionmentioning

confidence: 99%

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Variation in nutrient resorption by desert shrubs

Drenovsky¹,

James²,

Richards³

2010

Journal of Arid Environments

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a b s t r a c tPlant nutrient resorption prior to leaf senescence is an important nutrient conservation mechanism for aridland plant species. However, little is known regarding the phylogenetic and environmental factors influencing this trait. Our objective was to compare nitrogen (N) and phosphorous (P) resorption in a suite of species in the Asteraceae and Chenopodiaceae and assess the impact of soil salinity on nitrogen resorption. Although asters and chenopods did not differ in N resorption proficiency, chenopods were more proficient than asters at resorbing P. Plant responses to salinity gradients were species-specific and likely related to different salt-tolerances of the species. During the three year study, precipitation varied 6.4-and 9.9-fold from the long term averages at our two desert sites; despite these differences, annual variation in nutrient resorption was not linked to annual precipitation. More detailed studies are required to understand the influence of salinity and precipitation on resorption. Understanding controls on this trait may give insight into how species will respond to anthropogenic soil salinization and desertification.

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Section: Introductionmentioning

confidence: 99%

“…Our study was conducted at the Mono Basin Ecosystem Research Site (MBERS), near Mono Lake, and around the Owens Lake playa, California, USA during Fall 2005, 2006, and 2007. MBERS is located on the western edge of the Great Basin Desert, USA, and the Owens playa is on the northern edge of the Mojave Desert, USA.…”

Section: Introductionmentioning

confidence: 99%

Variation in nutrient resorption by desert shrubs

Drenovsky¹,

James²,

Richards³

2010

Journal of Arid Environments

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Terpenoids of plants in arid environments

Tahri¹

2022

CABI Reviews

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Arid and desert environments are characterized by the sparse and discontinuous vegetation cover. Species that have been able to survive difficult bioclimatic conditions and adapt from generation to generation in these areas had to develop physiological and biochemical mechanisms of tolerance and/or resistance. The use of secondary metabolites, specifically terpenoids, is predominant in most of the biotic and abiotic interactions in which these plants are involved. Studies have shown their roles in the prevention of oxidative stress by intervening in thermo-tolerance, water stress, and salt stress generalized in a model of "the protective role of volatile compounds" explained by a single biochemical mechanism. Other studies have proven the functions of terpenoids in direct and indirect defenses against natural enemies, herbivores, and pathogenic microorganisms, in the attraction of pollinators, in competition and facilitation and other interactions between plants. This review mainly summarizes the recent research progress on the adaptation mechanisms of plants in arid environments and the biological and ecological roles of terpenoids in the various biotic and abiotic interactions.

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Genus Chrysothamnus: A Source of Bioactive Compounds

Cited by 2 publications

References 24 publications

Variation in nutrient resorption by desert shrubs

Variation in nutrient resorption by desert shrubs

Terpenoids of plants in arid environments

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